The Research And Application Of Automatic Voltage Control System In Beijing Jingneng Thermal Power Co.

Voltage is one of the most important indexes of power system operating condition and reaction power quality level. The grid side voltage level is directly related to the loss of power grid operation, and the voltage level of the user side if higher or lower than the normal scope of work, will not only affect the electricity service life of the equipment and the working efficiency, and even make the power equipment damage, threat to user security. Control power wattless power is one of the effective means to control the grid voltage.The research work of this paper focuses on the Beijing Jingneng power Limited by Share Ltd of Shijingshan cogeneration power plant automatic voltage control system (hereinafter referred to as "AVC system") of the applied research. On the basis of studying the basic principles of AVC system, according to the actual situation of Shijingshan cogeneration power plant and Beijing dispatching center requirement, from the aspects of data acquisition, control, security strategy, network architecture, architecture design, the design of AVC system in power plant project. In the practical application of the AVC system, the design and debugging and Implementation for the AVC system, including the local simulation test, the open loop test, function test and loop test. The actual operation of AVC system, the gains were analyzed and summarized.From design to debug the AVC system in this paper represent the Shijingshan thermal power plant, and then to the whole process of practical application, the real-time data acquisition control centre of Beijing and on-line analysis and calculation, to achieve voltage wattless automatic optimization, and ensure the safe and stable operation of power quality, efficient economy, have certain reference significance for other AVC system will be put into operation in power plant.