A kind of substation avc system with separate operation and its reactive power real-time adjustment value calculation method

Abstract

The invention relates to an AVC system of a separated running substation and a reactive real-time adjustment quantity calculation method of the AVC system. An input reactive compensation device at a high-voltage or low-voltage side of each separated running substation is built by a series of characteristic values, or a model of the bus voltage of the high-voltage side, the bus voltage of the transformer, the bus voltages of low-voltage sides of other transformers and a variable generated by reactive power exchange is built after the position of a tap switch of a shift transformer is raised orreduced; during site running of the AVC system of the separated running substation, the model can be used as an internal algorithm and is introduced into the AVC system, the AVC system is helped to rapidly and accurately make a reactive compensation switching strategy, so that a new AVC system of the separated running substation is generated; and by the new AVC system, the rapid adjustment response time requirement of the voltage and the reactive power can be met, so that the voltage and the reactive power of the substation are maintained within a qualified range at any time, and the output electric energy quality of the substation is improved.

Description

technical field [0001] The invention relates to an AVC system of substations operating in parallel and a reactive power real-time adjustment variable calculation method thereof, belonging to the technical field of electric power systems. Background technique [0002] When the power system is in normal operation, the power flow and voltage level should be controlled through preventive control, so as to maintain the stable operation of the grid power angle and have the necessary stability reserves. According to the principle of layering and partitioning, the reactive power of the system is reasonably adjusted through preventive control, the system voltage is maintained in a stable operating range, and an appropriate reactive power reserve is maintained to ensure the voltage stability of the system under normal disturbances or load fluctuations and reduce dynamic stability control. probability of occurrence. Therefore, the substation is required to install a reactive power com...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an AVC system of substations operating in parallel and its real-time reactive power adjustment calculation method to solve the problems of many adjustment times, long adjustment process and problems existing in the reactive power adjustment process of substations operating in parallel Prone to Oscillating Regulation Phenomena

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