基于SVG动态损耗模型的变电站无功补偿设备协同经济运行策略

Cooperative economic operational strategy of substation reactive power compensation equipment based on an SVG dynamic loss model

当前静止无功补偿器(static var generator,SVG)设备损耗参数仅标注额定功率下的稳态损耗,难以在不同运行状态下实现损耗的动态精细化管理。针对变电站无功补偿设备运行损耗过大的问题,在SVG动态运行损耗模型的基础上,提出一种考虑静止无功补偿装置(static var compensator,SVC)损耗特征的协同经济运行策略,以提升变电站无功补偿设备的运行经济性。首先,对SVG动态运行损耗模型和SVC模型进行分析。然后,提出多台SVG协同经济运行的最优投运台数判据和实时功率分摊准则。最后,提出无功功率完全补偿和考虑无功补偿价值的变电站无功补偿设备协同经济运行策略。通过搭建Simulink仿真系统,验证了所提协同经济运行策略的有效性。

Current static var generator(SVG)equipment loss parameters only indicate the steady-state loss under rated power,making it difficult to achieve dynamic and fine management of losses in different operating conditions.In response to the problem of excessive operating losses of reactive power compensation equipment in substations,a collaborative economic operational strategy considering the loss characteristics of the SVC is proposed based on the SVG dynamic operating loss model.This is to improve the operational economy of reactive power compensation equipment in substations.First,the SVG dynamic operating loss and SVC models are analyzed.Secondly,the optimal number of SVG to be operated collaboratively and real-time power allocation criteria are proposed.Finally,a collaborative economic operational strategy for reactive power compensation equipment in substations considering complete reactive power compensation and value is proposed.The effectiveness of the proposed strategy is verified by building a Simulink simulation system.