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首页> 外文期刊>IEEE Transactions on Industry Applications >Design of Undervoltage Relay Setting for an Industrial Plant With Cogeneration Units to Enhance Power Quality of Critical Loads
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Design of Undervoltage Relay Setting for an Industrial Plant With Cogeneration Units to Enhance Power Quality of Critical Loads

机译：带有热电联产装置的工业电厂欠压继电器设置的设计，以提高临界负载的电能质量

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摘要

This paper presents the design of undervoltage relay settings for an industrial plant with cogeneration units to prevent critical loads from tripping due to voltage sags. The critical loads that are sensitive to voltage sags in the plant have been identified from actual system fault contingencies. The power quality of these loads is enhanced by quickly islanding the subsystem with cogeneration units before tie line tripping with an external Taipower system. According to the transient stability analysis of the rest of the industrial power system near a Taipower network, the critical loads that are nonsensitive to voltage sags are disconnected from external system faults in time to restore the system stability with the execution of proper load shedding. To ensure the normal operation of critical and voltage-sensitive loads by considering the voltage tolerance curves, the proper relay settings for tie line tripping of the internal subsystem has been determined. This way, the critical loads and cogeneration units in the industrial power systems can be survived from system faults to mitigate the production loss of industrial customers.
机译：本文介绍了具有热电联产装置的工业工厂的欠压继电器设置的设计，以防止由于电压骤降而导致关键负载跳闸。已从实际的系统故障突发事件中识别了对工厂中的电压骤降敏感的关键负载。在通过外部Taipower系统将联络线跳闸之前，通过用热电联产机组快速隔离子系统，可以提高这些负载的电能质量。根据台电网络附近其余工业电力系统的暂态稳定性分析，对电压暂降不敏感的关键负载会及时从外部系统故障中断开，以通过执行适当的负载削减来恢复系统稳定性。为了通过考虑电压容差曲线来确保临界和电压敏感负载的正常运行，已经确定了内部子系统的联络线跳闸的正确继电器设置。这样，工业电力系统中的关键负载和热电联产单元可以避免系统故障，从而减轻工业客户的生产损失。

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