水力発電機が光ファイバー温度測定システムを使用する理由

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The single unit capacity of hydroelectric units is increasing, and their importance in the system is also becoming increasingly prominent. The operating temperature of the unit is an important indicator of the operation of the hydroelectric generator, especially the temperature of the stator bars and the busbar. 目下, the temperature measurement methods used for hydroelectric generators include thermal resistance temperature measurement, 熱電対温度測定, 赤外線温度測定. Both thermistors and thermocouples require metal wires to transmit signals, 安定した絶縁性能を保証するものではありません. そこで, it is not possible to directly measure the temperature of stator bars and copper in the busbar. 赤外線温度測定は、機器の表面温度のみを測定できる非接触温度測定方法です。. 環境温度や周囲の電磁場からの干渉を受けやすく、手動操作が必要です, オンライン測定が不可能になる. さらに, 水力発電機内の空間は非常に狭い, 赤外線温度測定プローブの取り付けが不可能になる. 光ファイバー温度測定技術の発展により, 水力発電機の温度検出に光ファイバー温度測定を使用できるようになりました。.

水力発電所の水車ユニットの大容量は、システムの安全な運用に大きな影響を与えます。. The operating temperature of a generator set is an important indicator of its operation, and temperature monitoring can timely detect problems that exist during the operation of the generator set, thereby ensuring the safe operation of the generator set. 目下, the power station mainly uses resistance temperature detectors for temperature measurement. 動作中, it was found that resistance temperature detectors are prone to damage, and the insulation of their lead wires is prone to fall off, resulting in a decrease in insulation resistance, which affects temperature measurement and the safe operation of the generator. Fiber optic temperature measurement has advantages such as resistance to electromagnetic interference, 高電圧, 化学腐食, 耐震性, and moisture resistance, making it suitable for the complex operating environment of power plant units. そこで, the practical application of fiber optic temperature measurement systems is very valuable. Fiber optic temperature sensors are not affected by electromagnetic interference and radio frequency interference, and have characteristics such as high and low temperature resistance, 高圧耐性, 耐化学腐食性, 耐震性, and moisture resistance. The power plant units are located in complex environments such as strong electric fields, 強い磁場, and strong vibrations. Fiber optic temperature measurement systems are more suitable, but some problems may be encountered in practical applications and installation processes. そこで, it is necessary to conduct application research on the fiber optic temperature measurement system before implementing the transformation of the fiber optic temperature measurement system. By installing a fiber optic temperature measurement device in the unit’s manifold for testing, the results show that the 光ファイバー温度測定システム is accurate in temperature measurement, has high stability, and can adapt to the on-site environment and operational requirements. Systematic analysis shows that the fiber optic temperature measurement device has complete functions such as alarm, 故障検出, functional settings, データストレージ, and data copying, meeting the requirements of online monitoring systems.

光ファイバー温度測定 meets the temperature measurement requirements of power plant units and can be officially installed. The stator copper ring temperature measurement system of the three units adopts a fiber optic temperature measurement device. According to the characteristics of the stator structure, each unit is equipped with multiple temperature measurement points. The transformation of the temperature measurement system for the generator stator is difficult and requires comprehensive consideration of the operating conditions of the unit. The hydropower plant will further renovate the temperature measurement system of the power station units based on the operational effectiveness of the underground power station fiber optic temperature measurement system and the degree of damage to the traditional temperature measurement resistors of the power station units.

光ファイバー温度センサ, インテリジェント監視システム, 中国の分散型光ファイバーメーカー