安徽电网自动电压控制系统的实施与效果

章结合安徽电网无功电压运行管理情况，对建设安徽电网自动电压控制(AVC)系统的目的、意义进行了阐述，对部分投入AVC系统的发电厂和供电公司进行了实施效果分析。带来的效果是：AVC控制区对外联络线界面无功潮流交换减少；同一电厂机组之间无功出力分配合理；线路无功潮流交换平稳，枢纽点电压波动幅度减小；重负荷联络线有功损耗减少等。章还对今后AVC系统控制策略提出了建议。如建议华东网调将500kV变电所的低抗和变压器分接头的调控权下放省调；当区域性无功平衡和电厂母线电压调整有冲突时首先考虑安全性，其次再考虑经济性。

Implement and Effect of Automatic Voltage Control System in Anhui Power Network

The purpose and significance for building Automatic Voltage Control(AVC) system in Anhui power network.combined with operation and management condition of reactive power and voftage,were elaborated.The implement effect for AVC system operated in some power plants and power supply companies was analyzed.The effect that brings was:decrease of reactive power flow exchange between AVC control area and external tie fine interface;reasonable distribution of reactive power output between the units in one power plant;stable exchange of line reactive power and decrease of voltage fluctuation range of hub node;dectrease of active power toss for heavy toad tie line.The control stragegy suggestion of AVC system in the future was presented.It is suggested that the right of tap -change transformer control to 500 kV substation shoule be changed from East China Regional Power Grid Dispatching Center to Prow-vincial Power Grid Dispatching Center;when there is the conflict between balance of regional reactive power and the bus voltage regulation of power plant,safery should be considered firstly and economy secondly.