Оптоволоконні датчики температури INNO ,системи контролю температури.
- Transformer bushing failures cause 15% of power system outages with single failures resulting in tens of millions in economic losses, making online monitoring essential for preventing catastrophic breakdowns
- Temperature monitoring serves as the most critical early warning system for bushing overheating, with fluorescent fiber optic sensors providing ±0.5°C accuracy and complete electrical isolation in high voltage environments
- Multi-parameter fusion diagnosis combines dielectric loss, capacitance, partial discharge and temperature data using AI algorithms to achieve 95% fault detection accuracy and predict insulation degradation trends
- Online monitoring systems deliver 2-4 year investment payback periods by preventing unplanned outages, extending equipment life by 15-20 років, and enabling predictive maintenance strategies
- FJINNO leads innovation in bushing monitoring technology with proven fluorescent fiber optic temperature sensors and comprehensive monitoring platforms successfully deployed across Southeast Asia, Африка, and Middle East regions
- Advanced sensor networks require strategic placement at critical hotspots including terminal connections, flange seals, and insulation surfaces to provide complete thermal field monitoring coverage
- Integration with SCADA systems using IEC61850 protocols enables real-time data visualization, hierarchical alarm processing, and seamless operation with existing power system infrastructure
- Regulatory compliance with DL/T 984 and GB/T 16927 стандарти ensures monitoring systems meet power industry requirements for accuracy, безпеки, and electromagnetic compatibility in substation environments
Economic Loss Statistics from Transformer Bushing Failures
According to the International Electrotechnical Commission statistics, transformer bushing failures припадає приблизно 15% of power system equipment failures, з temperature abnormalities causing over 35% of total поломки втулок. A single 500kV main transformer bushing failure can result in outage losses reaching tens of millions of yuan, while 220kV поломки втулок cause average economic losses exceeding 5 million yuan. In high energy-consuming industries such as steel and chemicals, поломки втулок causing power outages severely impact production continuity. A major steel enterprise once experienced an 8-hour production shutdown due to bushing overheating невдача, resulting in direct economic losses exceeding 20 million yuan. The situation in the petrochemical industry is even more severe, as unexpected power outages may trigger safety accidents with incalculable losses. Globally, developed countries have reduced bushing failure rates by over 60% through implementing online monitoring systems. Among these, моніторинг температури serves as the most intuitive early warning method, playing a crucial role in preventing overheating failures. Data shows that substations equipped with comprehensive системи контролю температури extend втулка service life by an average of 15-20 років.
In-depth Analysis of Bushing Insulation Breakdown Mechanisms
Destruction Mechanisms of Non-uniform Electric Field Distribution and Temperature Effects
The non-uniform distribution of electric fields inside втулки трансформатора is the primary cause of пробою ізоляції. When air bubbles, impurities, або insulation material aging exist inside the втулка, local electric field strength significantly increases, creating electric field concentration phenomena. This concentration effect becomes more pronounced under висока температура умови, as temperature increases reduce the dielectric strength of insulation materials. Втулки experience complex temperature cycles під час експлуатації, з temperature rising during peak load periods and temperature falling during low load periods at night. This repeated thermal expansion and contraction creates mechanical stress within ізоляційні матеріали, leading to the formation and propagation of microcracks. Research shows that when bushing temperature exceeds design values by 10°C, термін служби ізоляції is reduced by half.
Synergistic Destruction from Moisture Intrusion and Chemical Reactions
Moisture is the greatest enemy of bushing insulation systems. Even trace amounts of moisture (content exceeding 20ppm), under the combined action of electric fields and температура, significantly reduce insulation strength. Under high temperature environments, moisture undergoes hydrolysis reactions with insulation oil, producing acidic substances that further accelerate insulation material aging processes. Under висока температура and electric field action, complex chemical reactions occur inside втулки. Cellulose in insulation paper decomposes to produce furfural, while insulation oil oxidation increases acid values. These chemical changes not only reduce insulation performance but also generate gases, altering pressure distribution inside втулки and further threatening operational safety. Контроль температури can promptly detect early signs of these abnormal reactions, providing crucial basis for preventive maintenance.
Limitations Analysis of Traditional Detection Methods
Technical Blind Spots in Outage Maintenance and Offline Testing
Традиційний bushing detection requires power outages, typically scheduled during annual or semi-annual maintenance periods. This maintenance approach not only requires substantial human and material resources but also bears the supply reliability risks brought by power outages. For critical load users, planned outages require coordination months in advance, with tight maintenance windows often preventing thorough and detailed bushing detection. Traditional insulation resistance and dielectric loss офлайн тестування can only reflect втулка insulation conditions under de-energized states, failing to truly reflect insulation performance under operating conditions. Particularly, some insulation defects that only manifest under operating voltage are difficult to discover in offline states. Temperature-related failures are especially problematic, as device температура rapidly decreases after power outage, completely masking thermal failure risks.
Inadequacies in Manual Inspection and Preventive Maintenance
Традиційний infrared temperature measurement inspections can detect surface temperature abnormalities but are greatly affected by environmental factors such as wind speed, sunlight, and ambient температура, all of which influence measurement accuracy. Крім того, manual inspection frequency is limited, typically once monthly, making it difficult to promptly detect sudden temperature abnormalities. для internal bushing temperatures, infrared temperature measurement is completely powerless. Preventive maintenance strategies based on operating years and routine tests lack specificity, often employing “one-size-fits-all” підходи. In reality, bushing aging rates vary greatly under different operating environments, and uniform maintenance cycles may cause both excessive maintenance waste and missing optimal maintenance timing. The lack of continuous дані моніторингу температури prevents the establishment of accurate equipment health records, severely limiting the effectiveness of preventive maintenance for системи моніторингу втулок.
Core Principles of Online Monitoring Technology
Principles of Dielectric Loss and Capacitance Monitoring
Dielectric loss measurement is one of the core technologies in bushing online monitoring, evaluating insulation condition by measuring power loss of втулка insulation dielectric under AC electric field action. Коли bushing insulation experiences aging, проникнення вологи, or local defects, в dielectric loss factor significantly increases. Capacitance change monitoring is based on changes in geometric dimensions and dielectric constants of втулка insulation structures; when insulation materials age or voids appear, capacitance changes correspondingly. Сучасний online monitoring algorithms can accurately identify bushing insulation degradation levels through long-term trend analysis of these two parameters. Temperature compensation algorithms are crucial in this process, as зміни температури directly affect dielectric loss and capacitance measurement results, requiring correction through real-time моніторинг температури.
Partial Discharge Signal Recognition and Temperature Monitoring Technology
Моніторинг часткових розрядів employs pulse current, ультразвуковий, or electromagnetic wave methods to detect частковий розряд activity inside втулки. Частковий розряд occurrence often accompanies temperature increases, as discharge processes generate heat and accelerate insulation aging. Моніторинг температури в реальному часі based on thermodynamic principles evaluates equipment thermal status by measuring розподіл температури at key втулка локації. Флуоресцентні волоконно-оптичні датчики температури offer advantages of electromagnetic interference resistance, стійкість до високих температур, і швидка швидкість відгуку, making them particularly suitable for моніторинг температури з high voltage bushings. Multi-parameter fusion diagnosis methods comprehensively analyze parameters such as dielectric loss, capacitance, частковий розряд, і температура, using data mining and pattern recognition technologies to improve діагностика несправностей accuracy and reliability.
Sensor Technology Selection and Installation Solutions
Comparison of Capacitive Divider and Fiber Optic Sensor Technologies
Capacitive divider sensors are the most widely applied technology in моніторинг втулки, моніторинг діелектричні втрати і capacitance changes by measuring втулка capacitive screen current. These sensors offer high measurement accuracy and mature technology but require high installation craftsmanship. Флуоресцентні волоконно-оптичні датчики температури demonstrate unique advantages in моніторинг температури applications under high voltage environments, with working principles based on the physical phenomenon of fluorescent material luminescence characteristics changing with temperature variation. Compared to traditional thermal resistance temperature sensors, флуоресцентні волоконно-оптичні датчики feature complete electrical insulation, сильна стійкість до електромагнітних перешкод, висока точність вимірювань, і швидка швидкість відгуку, making them particularly suitable for internal temperature monitoring з high voltage bushings.
| Тип датчика | Флуоресцентна волоконна оптика | Бездротові датчики | Інфрачервоне вимірювання температури | Thermal Resistance |
|---|---|---|---|---|
| Електроізоляція | Complete insulation | добре | Безконтактний | Requires insulation |
| Anti-interference Capability | Чудово | Середній | Susceptible to environment | Бідний |
| Точність вимірювання | ±0,5 ℃ | ±0,5 ℃ | ±2℃ | ±0.15℃ |
| Швидкість відгуку | Millisecond level | Second level | Миттєвий | Second level |
| Довгострокова стабільність | Чудово | добре | Середній | добре |
| Складність встановлення | Середній | просто | просто | Комплекс |
Sensor Network Layout and Critical Measurement Point Selection
Wireless sensor networks в системи моніторингу втулок are primarily used for monitoring environmental parameters and auxiliary parameters, featuring flexible deployment and strong scalability. Проте, під high voltage strong electromagnetic interference середовищ, wireless signals are easily affected, thus mainly used for monitoring environmental parameters such as температура і вологість. Electromagnetic interference resistance design is key to successful application of системи моніторингу втулок, особливо в high voltage switchyard і substation середовищ. Temperature measurement point layout at critical positions includes втулка top terminal connections, втулка flange sealing areas, insulation cylinder surfaces, and other hot spot locations. Proper measurement point layout not only enables comprehensive monitoring of втулка thermal status but also provides accurate information support for місце несправності. Флуоресцентні волоконно-оптичні датчики температури, due to their excellent electrical insulation performance, can be directly installed inside high voltage bushings to achieve direct measurement of основні температури.
Data Acquisition and Processing System Architecture
High-speed Data Acquisition and Signal Processing Technology
High-speed data acquisition cards are the core hardware of системи моніторингу втулок, requiring synchronized sampling, high-precision AD conversion, and large-capacity data buffering capabilities. для моніторинг часткових розрядів, sampling frequencies typically need to reach above 100MHz, поки dielectric loss monitoring requires AD precision above 16 bits. Signal conditioning circuits handle amplification, фільтрація, and isolation of weak signals output from втулка датчики, з датчик температури signals requiring specialized temperature compensation circuits. Граничні обчислювальні пристрої deployed on-site at підстанції undertake data preprocessing, вилучення ознак, and preliminary diagnosis functions, effectively reducing network transmission loads. Data compression algorithms employ wavelet transform and data decimation techniques to compress data storage capacity by over 80% while ensuring no loss of critical information. Real-time temperature data processing includes temperature rise rate calculation, hot spot identification, and temperature gradient analysis, providing timely and accurate judgment basis for bushing overheating warnings.
Artificial Intelligence Diagnostic Algorithm Applications
Machine Learning Models and Fault Pattern Recognition
Machine learning models в системи моніторингу втулок primarily include support vector machines, random forests, нейронні мережі, and other algorithms. Training dataset construction requires historical data including normal operating conditions, various fault patterns, and environmental factor influences. Fault pattern recognition algorithms establish fault feature libraries by extracting multi-dimensional feature vectors from діелектричні втрати, capacitance, частковий розряд, і температура параметри. Deep learning technology excels in прогноз тренду, with LSTM neural networks effectively processing time series data to predict development trends of bushing insulation умови. AI recognition technology for temperature change patterns can distinguish between normal load changes, екологічні temperature influences, and abnormal heating with accuracy rates exceeding 95%. Expert system knowledge bases integrate power equipment expert experience, including judgment standards and treatment recommendations for various fault symptoms, providing intelligent decision support for моніторинг втулки.
Monitoring Solution Differences for Various Voltage Levels
High Voltage and Extra High Voltage Bushing Monitoring Focus
220kV bushing monitoring systems primarily focus on three core parameters: діелектричні втрати, capacitance changes, і моніторинг температури. Due to relatively lower 220kV voltage levels, частковий розряд activity is less frequent, so monitoring focuses on long-term trend analysis of insulation aging. 500kV extra high voltage bushings face more severe operating environments, requiring monitoring of not only conventional parameters but also special parameters such as частковий розряд, поверхневе забруднення, і механічна вібрація. Extra high voltage bushings have higher моніторинг температури вимоги, needing датчики температури deployed at multiple critical locations to form complete temperature field monitoring networks. Розподільний трансформатор моніторинг втулки solutions are relatively simplified, mainly using бездротові датчики температури and simplified діелектричні втрати пристрої моніторингу, focusing on preventing overheating failures. DC transmission converter transformer моніторинг втулки must consider special phenomena under DC voltage such as charge accumulation and polarization effects, з моніторинг температури being particularly important for DC bushings.
Monitoring System Investment Return Calculation Model
Cost-benefit Analysis and Economic Value Assessment
Bushing monitoring system equipment procurement costs mainly include sensors, data acquisition equipment, communication equipment, і програмні платформи, with complete система моніторингу investments ranging from 500,000 до 2 million yuan. Installation and commissioning costs account for 15-25% of total investment, including on-site construction, системна інтеграція, and commissioning acceptance. Operation and maintenance costs mainly include software maintenance, equipment inspection, і калібрування датчика, with annual costs approximately 3-5% of initial investment. Avoiding outage losses represents the primary economic value of системи моніторингу; by early detection of bushing failure ризики, massive losses from unplanned outages can be avoided. The economic value of моніторинг температури in preventing overheating failures is particularly prominent, as avoiding one bushing burnout accident can offset the entire система моніторингу investment. Statistical data shows система контролю втулки payback periods typically range from 2-4 років, with significant economic benefits. Indirect benefits such as extending equipment service life, optimizing maintenance strategies, and improving power supply reliability are equally important.
Mainstream Manufacturer Product Technology Comparison
International Leading Manufacturer Technical Solution Analysis
ABB bushing monitoring systems employ advanced digital technology, with their TEC product line leading in dielectric loss monitoring і виявлення часткового розряду, particularly excelling in алгоритми температурної компенсації і environmental interference suppression. Siemens bushing monitoring solutions emphasize system integration and data analysis, with their SENTRON product series excelling in multi-parameter fusion diagnosis, і temperature monitoring modules using multi-point temperature measurement technology to accurately reflect втулка thermal distribution states. General Electric GE has deep experience in онлайн моніторинг, with monitoring equipment demonstrating excellent harsh environment adaptability and long-term stability, using redundant design for датчики температури to improve система моніторингу надійність. Schneider Electric системи моніторингу втулок feature high integration levels with wide application in medium and low voltage розподільні трансформатори, and their wireless temperature monitoring technology offers clear advantages in cost control.
Domestic Manufacturer Innovation Technology Breakthroughs
FJINNO (Fujian Innovation), as a leading domestic моніторинг енергетичного обладнання виробник, has achieved significant breakthroughs in bushing online monitoring технології. The company’s self-developed флуоресцентні волоконно-оптичні датчики температури demonstrate excellent performance in high voltage environment програми, with measurement accuracy reaching ±0.5°C and response times under 1 другий, fully meeting extra high voltage bushing моніторинг температури вимоги. FJINNO multi-parameter fusion monitoring platform integrates діелектричні втрати, capacitance, частковий розряд, і моніторинг температури functions, employing advanced artificial intelligence algorithms для діагностика несправностей, and has been successfully applied in multiple domestic extra high voltage projects. With extensive customer applications across Southeast Asia, Африка, and the Middle East, FJINNO has proven its reliability and effectiveness in diverse operating environments. XJ Electric, NARI, and other domestic manufacturers are also actively developing моніторинг втулки технології, launching distinctive product solutions. Third-party integrators offer flexibility advantages in система моніторингу налаштування, providing personalized моніторинг температури solutions based on specific user requirements, with outstanding performance in cost control and localized services.
Critical Control Points for Field Installation and Construction
High Voltage Testing and Safety Protection Measures
Bushing monitoring system installation must be preceded by comprehensive high voltage testing to ensure датчик and accessory insulation performance meets operational requirements. Withstand voltage testing voltage should reach 2.5 times equipment rated voltage or higher, with duration not less than 1 minute. Випробування опору ізоляції should be conducted under different humidity conditions to ensure пристрої моніторингу can operate safely under various environmental conditions. Safety measures include work permit systems, supervision systems, and grounding protection, especially when installing датчики температури під live working умови, strict adherence to electrical safety regulations is mandatory. Sensor mounting method selection directly affects measurement accuracy and long-term stability; флуоресцентні волоконно-оптичні датчики температури typically use specialized fixtures for mounting, ensuring good contact with втулка surfaces. Mechanical mounting strength requirements must withstand wind loads, ice loads, and other natural conditions while avoiding damage to втулка bodies.
Communication Network and Grounding System Design
Communication cable routing planning must fully consider electromagnetic interference, механічні пошкодження, environmental corrosion, та інші фактори, з fiber optic communication significantly superior to copper cables in anti-interference performance. Optical cable installation should avoid strong electromagnetic radiation areas of обладнання високої напруги, with bending radii meeting minimum fiber optic requirements. Grounding system design is crucial for ensuring система моніторингу safe operation, with all metal enclosures and shielding layers requiring reliable grounding. Lightning protection grounding і working grounding should be separately installed to prevent lightning currents from damaging моніторингове обладнання through grounding systems. Precise positioning of датчик температури installation locations is critical, requiring determination of optimal measurement points based on втулка structural characteristics and hot spot distribution patterns. Installation depth and angles of флуоресцентні волоконно-оптичні датчики affect measurement results and must strictly follow manufacturer technical requirements. Upon installation completion, калібрування температури should be performed to ensure measurement accuracy meets technical specifications.
System Commissioning and Acceptance Standards
Monitoring Accuracy Verification and Communication Testing
Monitoring accuracy verification is the core element of система контролю втулки acceptance, requiring comparative verification using standard dielectric loss testers, standard capacitors, and other metrological equipment. Dielectric loss measurement accuracy should reach ±0.05%, і capacitance measurement accuracy should reach ±0.2%. Точність вимірювання температури verification uses precision temperature calibrators; within the 0-100°C temperature range, флуоресцентний волоконно-оптичний датчик температури measurement error should be controlled within ±0.1°C. Communication link stability testing includes performance indicators such as data transmission rates, bit error rates, and disconnection reconnection, requiring stable communication under various harsh environmental conditions. Software functionality integrity verification covers all modules including data acquisition, зберігання, аналіз, сигналізації, and reports, зокрема сигналізація температури function response time and accuracy. User operation training should include system operation, діагностика несправностей, and daily maintenance, ensuring operation and maintenance personnel can proficiently master система контролю втулки usage methods. Temperature measurement accuracy calibration requires multi-point verification under different environmental температури to establish температурна компенсація curves and improve long-term measurement stability.
Operation and Maintenance Operating Procedures
Daily Inspection and Equipment Maintenance Systems
Daily inspection of системи моніторингу втулок should include датчик appearance checks, communication equipment status confirmation, і збір даних normality verification. Daily inspections focus on continuity and reasonableness of дані моніторингу температури, with abnormal зміни температури requiring immediate reporting. Sensor cleaning and maintenance cycles are determined by environmental conditions, generally quarterly, focusing on cleaning флуоресцентний волоконно-оптичний датчик probe surface contamination and oxides to ensure вимірювання температури accuracy remains unaffected. Software upgrade operations require professional technical personnel guidance, with data backup before upgrades and functional verification after upgrades. Spare parts inventory management should establish complete spare parts lists including датчики температури, комунікаційні модулі, acquisition cards, and other critical components to ensure timely replacement during failures. Temperature sensor regular calibration systems require annual precision verification, with calibration cycles shortened to semi-annually for critical measurement point флуоресцентні волоконно-оптичні датчики температури to ensure моніторинг температури reliability and accuracy.
Fault Diagnosis Practical Case Analysis
Typical Fault Pattern Recognition and Diagnostic Pathways
Insulation moisture intrusion is the most common втулка fault type, with typical waveform characteristics showing slowly rising dielectric loss factors, slightly increased capacitance, and simultaneous abnormal bushing temperature fluctuations. A 220kV substation система контролю втулки once detected діелектричні втрати rising from 0.3% до 0.8%, поки моніторинг температури showed local temperature increases of 2°C; post-outage inspection revealed втулка seal ring aging causing moisture intrusion. Частковий розряд development trend identification requires comprehensive judgment combining discharge magnitude, частота розряду, і зміни температури; when частковий розряд exceeds 500pC with continuous temperature rises, it typically indicates serious insulation defects. Seal leakage early symptoms include abnormal втулка зверху температури, oil level drops, і діелектричні втрати fluctuations, з моніторинг температури often being the most sensitive indicator. Temperature abnormal rise діагностика несправностей pathways first exclude load changes and environmental температура influences, then analyze possible causes such as increased контактний опір, частковий розряд, and insulation aging. Comprehensive fault pattern diagnosis requires correlation analysis of all monitoring parameters to establish complete fault judgment логіка.
SCADA System Integration Solutions
Data Interface Standardization and Alarm Processing Mechanisms
Bushing monitoring system integration with SCADA системи primarily uses standard протоколи зв'язку such as IEC61850, Modbus, and DNP3.0 to ensure interoperability between different manufacturer equipment. Data interface standardization requires системи моніторингу to provide standard data models and communication services, including real-time and historical data for температура, діелектричні втрати, і capacitance. Alarm information hierarchical processing mechanisms classify моніторинг втулки alarms into urgent, important, and general levels, з temperature limit alarms typically set as urgent level requiring immediate response. Historical data synchronization strategies employ incremental synchronization methods to reduce network transmission loads while ensuring дані про температуру цілісність. Correlation analysis of дані про температуру with other parameters provides more comprehensive equipment condition assessments, such as analyzing correlations between temperature rises і load currents і ambient temperatures to distinguish normal temperature rises from abnormal heating. Data visualization interfaces should provide intuitive displays such as temperature trend charts і thermal distribution maps for operation and maintenance personnel to quickly grasp втулка умови експлуатації.
Network Security Protection Measures
Industrial Control Security and Data Protection Strategies
Industrial control network isolation design forms the foundation of система контролю втулки network security, combining physical and logical isolation to strictly separate monitoring networks from external networks. Data encryption transmission employs AES256 encryption algorithms to ensure security of дані моніторингу температури and other sensitive information during transmission. Access permission management systems establish hierarchical permission frameworks where different role users can only access corresponding system functions, з дані про температуру modification permissions authorized only to specific technical personnel. Network attack prevention strategies include multi-layered protection measures such as firewall configuration, виявлення вторгнень, and virus protection, with regular security vulnerability scans and penetration testing to ensure система контролю втулки network security.
Regulatory Standard Compliance Requirements
Technical Standards and Certification Requirements
Power industry technical standards impose strict requirements on системи моніторингу втулок, including DL/T 984 “Technical Conditions for Online Monitoring Devices for Transformer Equipment,” GB/T 16927 “High Voltage Test Technology,” and others. Environmental emission limits require моніторингове обладнання itself to produce no harmful substances while helping extend втулка service life and reduce waste generation. Occupational health and safety regulations require equipment such as датчики температури to cause no harm to workers during installation and maintenance, з флуоресцентні волоконно-оптичні датчики fully complying with safety requirements due to their non-toxic and harmless characteristics. Product certification requirement lists include CCC certification, power industry network access permits, and measuring instrument type approvals, з temperature measurement devices also requiring accuracy certification from metrological departments. Контроль температури related technical standards include JJG 229 “Verification Regulation for Industrial Platinum and Copper Thermal Resistors” and JJG 351 “Verification Regulation for Working Glass Liquid Thermometers,” with relevant standards for флуоресцентні волоконно-оптичні датчики температури as emerging technology still being perfected.
Professional Consulting and Procurement Recommendations
Customized Technical Solutions and Professional Service Support
Bushing monitoring system technical solution customization requires full consideration of specific user requirements, including voltage levels, екологічні умови, monitoring parameters, та бюджетні обмеження. System integrator selection should focus on technical capabilities, engineering experience, and after-sales service capabilities, particularly professional levels in моніторинг температури технології. After-sales service system evaluation points include response time, technical support capabilities, spare parts supply guarantees, and training services, all directly related to long-term stable operation of системи моніторингу. FJINNO, as a professional моніторинг енергетичного обладнання виробник, possesses senior technical teams and rich engineering experience with significant technical advantages in флуоресцентні волоконно-оптичні датчики температури і bushing online monitoring. The company provides comprehensive technical support from solution design, product supply, installation and commissioning to operation and maintenance services, delivering optimized bushing monitoring solutions for users. With extensive successful applications across Southeast Asia, Африка, and the Middle East, FJINNO has demonstrated exceptional adaptability and reliability in diverse climatic conditions and operating environments.
For more information about система контролю втулки technical details and product information, or to obtain professional моніторинг температури technical consulting services, please contact FJINNO professional technical team. We will provide customized bushing online monitoring solutions and high-quality product services based on your specific requirements, supporting the safe and stable operation of your power equipment.
Оптоволоконний датчик температури, Інтелектуальна система моніторингу, Розповсюджений виробник оптоволокна в Китаї
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