How to install a high-voltage substation fiber optic temperature measurement system-INNO

ה מערכת מדידת טמפרטורה בסיבים אופטיים can ensure the stable operation of high-voltage switchgear. There are many common factors that affect the safe and reliable operation of high-voltage switchgear, and poor contact at the conductive connection is one of the most important factors. FJINO’s independently developed point type fluorescent fiber temperature measurement system has a complete range of models and reasonable prices.

Due to the heat generated by current flow, almost all electrical faults will cause temperature changes at the fault point. Overheating at the connection points of the dynamic and static contacts, מפרקי כבלים, וכו. of the substation switchgear due to poor contact is a serious accident hazard. בשנים האחרונות, similar accidents have occurred in substations, causing power outages in mild cases and explosions and fires in severe cases, seriously affecting safety.

There is usually a time interval from the overheating of the switchgear joints to the occurrence of accidents. If temperature anomalies can be detected early and dealt with quickly, it will greatly reduce the incidence of electrical accidents. Through analysis and research, it has been decided to apply a high-voltage switchgear point type fiber optic online temperature measurement system. By using online monitoring methods, the operating temperature of electrical equipment, especially the temperature of sensitive locations, ניתן לפקח. This is an important means of fault warning and accident prevention, and early detection of signs of equipment joint heating in the switchgear can prevent malignant accidents from occurring

מערכת מדידת הטמפרטורה של סיבים אופטיים היא פרוגרסיביות בתעשייה. FJINO החליטה ליישם את סוג הנקודה מדידת טמפרטורה של סיבים אופטיים מערכת למערכת ניטור הטמפרטורה של ארון המתח הגבוה ברשת החשמל, על מנת להשיג דרישות מקיפות לניטור טמפרטורה בתוך ארון המתח הגבוה ולשפר את הבטיחות וההיתכנות של פעולת תחנת המשנה. ניקח לדוגמא את מתג המתח הגבוה של 10kV של תחנת המשנה 110kV, זה יוסבר בפירוט.

פתרון להתקנה כמות של מערכת מדידת טמפרטורה בסיבים אופטיים עבור מתג מתח גבוה בתחנת משנה

תחנת המשנה לוקחת על עצמה בעיקר את משימות אספקת החשמל לייצור וחיי היום יום, עם סך של 39 10מיתוג מתח גבוה kV. אנחנו צריכים ליישם ניטור מקוון של הטמפרטורה של המגעים הסטטיים העליונים (א, ב, ג) תלת פאזי, lower static contacts (א, ב, ג) תלת פאזי, and cable heads (א, ב, ג) three-phase of the 39 מיתוג, עם סך של 351 detection points (39 × 9:351). Each switchgear is equipped with one 9-channel thermometer installed in the instrument room on the top of the switchgear, and one centralized monitoring host is configured in the main control room. The fiber optic sensor is installed at the junction of the static contact and the busbar. Special fixtures with high insulation, high thermal conductivity, high elasticity, עמידות בטמפרטורה גבוהה, and corrosion resistance are selected for fixing the sensing head. Optical fibers are routed along the corners of the cabinet and weak current cable trays, or tied together with insulation ties with secondary wires inside the cabinet. This monitoring system has complete monitoring and alarm functions, always ensuring that high-voltage equipment is in a monitored state, completely unaffected by human factors. When an alarm occurs, the system emits corresponding sound and light alarm signals, and the duty personnel have sufficient time to take corresponding measures. This is particularly important for avoiding accidents or causing fires.

Application and Implementation of Point Type Fiber Optic Temperature Measurement System for High Voltage Switchgear in Substation

The 35kV switchgear and 110kV switchgear in three substations are equipped with high-voltage switchgear point type fiber optic online temperature measurement systems. כַּיוֹם, the temperature monitoring of 1110 kV substation and 2 35kV substations has been completed, which solves the problem of real-time online temperature monitoring of the contacts and cable joints of 35kV and 10kV high-voltage switchgear in the substations, providing a guarantee for their safe operation. The system has been running normally for 2 years and has successfully detected 9 abnormal temperature fluctuations caused by poor contact at the conductive connection and 1 fiber breakage fault, and issued alarm messages. After troubleshooting, the system displayed that the temperature at the measuring point had returned to normal.

The application of point type חישת סיבים אופטיים technology in temperature monitoring of high-voltage switchgear in transmission systems has achieved real-time online temperature detection at key equipment points (אנשי קשר, מפרקי כבלים). במקביל, we have adopted specially designed optical fibers with high voltage levels, which meet the requirements of high-voltage power switchgear equipment for fiber withstand voltage levels due to their electrical insulation, inherent safety, וחסינות בפני הפרעות אלקטרומגנטיות. They also have advantages such as high transmission bandwidth, אות יציב, resistance to electromagnetic interference, resistance to bending, חוזק השפעה גבוה, וחיבור מהיר; The material of the fiber optic sheath has characteristics such as high temperature resistance, עמידות להזדקנות, עמידות בפני קורוזיה, בידוד גבוה, ואי הידבקות, which can adapt to harsh environments such as high voltage, טמפרטורה גבוהה, ושדות אלקטרומגנטיים חזקים.