计及新能源消纳的地区电网无功电压优化控制策略

An optimal reactive voltage control strategy for regional power grids considering new energy consumption

新能源高比例接入电网导致的电压质量下降,是制约新能源消纳能力的重要因素。为此,提出一种基于新能源最大消纳能力的无功电压优化控制方法。利用新能源发电预测数据评估最大发电能力,建立无功电压优化模型并求解各节点的电压控制目标,进行超前决策控制。根据地区电网的拓扑特征和运行特性,设计动态分区、策略预判、告警闭锁等相关功能,提升控制方法的安全性和稳定性。对实际算例的仿真分析结果表明,该方法对无功电压支撑具有良好效果,可有效促进地区电网的新能源消纳。

The voltage quality decline caused by the high proportion of new energy connected to power grids is a key factor limiting the capacity of new energy consumption.Therefore,an optimal reactive voltage control method based on the maximum capacity of new energy consumption is proposed.The new energy generation forecast data is used to assess the maximum generation capacity,establish the reactive voltage optimization model and solve the voltage control target at each node for forwarding decision control.According to the topological properties and operational characteristics of the regional power grids,dynamic zoning,strategy prediction,alarm blocking,and other concerning functions are designed to improve the safety and stability of the control method.The simulation analysis results of an example show that the method features ideal reactive voltage support and can promote new energy consumption in the regional power grids.