电网AGC与AVC协调控制方法

电力系统有功功率与无功功率耦合日益紧密,自动发电控制(AGC)与自动电压控制(AVC)相互解耦的模式会影响电网的运行控制效果。基于AGC与AVC不同的控制周期,在时间尺度上建立了分钟层和秒层两级衔接的AGC与AVC协调控制模式,提出了控制方法。在分钟层级上,建立有功功率与无功功率联合的最优潮流模型,提出AGC与AVC的联合优化控制方法;在秒层级上,完善AGC与AVC各自的控制策略,提出AGC与AVC的协调校正控制方法。通过算例验证表明,所提方法在满足AGC与AVC各自控制目标的同时,实现了电网的经济运行,抑制了AGC与AVC的相互影响,促进了AGC与AVC的相互支撑。

Coordinated control method of AGC and AVC in power grid

With the coupling relationship between active power and reactive power in power system becoming stronger, the control mode that automatic generation control (AGC) and automatic voltage control (AVC) operate separately may influence the control effect. Considering of the different control periods of AGC and AVC, this paper proposes a coordinated control method of AGC and AVC with a connection on the time scale of minute level and second level. On the minute level, an optimal power flow model of active power and reactive power associated together is established, a AGC and AVC associated optimization control method is proposed. On the second level, the respective control strategy of AGC and AVC is improved and a coordinated correction control method of AGC and AVC is proposed. Simulation is made to verify that the method proposed meets the respective control objective of AGC and AVC. At the same time, it can realize the economic operation of power system, restrain the mutual influence of AGC and AVC, and promote the mutual support between AGC and AVC.