互联电网CPS标准下的自动发电控制策略

阐述了互联电网控制性能评价标准(CPS)下的自动发电控制(AGC)策略。提出了CPS调节功率分量这一新概念,并将其与比例分量和积分分量相结合,构成区域总调节功率。进一步根据区域控制偏差(ACE)和频率偏差的大小与方向,对区域总调节功率予以修正,以进一步提高CPS指标。最后提出了根据区域总调节功率而不是ACE来划分AGC控制区域的方法。这些控制策略有利于提高电网频率控制质量,体现了紧急情况下互联电网各AGC控制区之间的相互支援,在多个大电网的实际应用中取得了良好的效果。

Automatic Generation Control Strategy Under Control Performance Standard for Interconnected Power Grids

A new control strategy to perform automatic generation control (AGC) and its assessments by the NERC Control Performance Standard (CPS) are proposed As a new concept, the CPS regulation power component is presented and combined with traditional proportional and integral components to form total regulation power of AGC control area. Based on the area control error (ACE) and frequency deviation, the total regulation power is corrected to be more suitable for CPS. Finally, a method to define AGC control region according to the total regulation power, not ACE, is provided. This control strategy has been implemented in the EMS of several large power systems of China, and has been proved effective to improve frequency quality and provide power support to interconnected power grids in emergency.