多直流受端电网多无功装置协调控制优化方法  

Coordinated Control Optimization Method for Multiple Reactive Devices of Multiple-DC receiving Ends Power Grid

作　　者：岳宗祖 申旭辉 严凤[1] YUE Zongzu;SHEN Xuhui;YAN Feng(North China Electric Power University,Hebei Baoding 071000,China;China Electric Power Research Institute,Beijing 100085,China)

机构地区：[1]华北电力大学,河北保定071000 [2]中国电力科学研究院有限公司,北京100085

出　　处：《电力电容器与无功补偿》2021年第3期8-15,共8页Power Capacitor & Reactive Power Compensation

基　　金：国家电网公司科技项目(SGSXXZ00XTJS2000287)。

摘　　要：充足的无功补偿是保证多直流受端电网运行稳定性和安全性的有效措施。本文提出了一种综合评价指标对直流落点近区发电机无功出力进行优化控制排序,并以此为基础制定了多直流受端电网内无功装置协调控制优化方法。首先分析了受端电网稳态运行时多无功装置不同配比对暂态电压稳定的影响,然后根据发电机动态无功支撑指标、发电机优化选择指标制定了多无功装置的协调控制优化方法,从而达到合理利用现有无功装置提升受端电网电压稳定性的目的。仿真结果表明,与华中电网现有运行方式相比,本文提出的方法不仅增强了受端电网的抗冲击能力,而且降低了落点近区的旋转备用容量,具有良好的经济性。Sufficient reactive power compensation is the effective measure to assure both operation stability and safety of multi-DC receiving end.A kind of comprehensive evaluation index is proposed in this paper for optimization control sorting of the reactive output of generator near the DC drop point and,on this basis,the coordination control and optimization method of reactive power device in the DC receiving end grid is developed.Firstly,the influence of different ratio of multi-reactive power devices on transient voltage stability is analyzed when the receiving end grid is in steady operation.Then,the coordination control and optimization method of multiple reactive device is developed in accordance with the dynamic reactive power index of generator and the optimization selection index of the generator with purpose of reasonably using existing reactive power device to improve grid voltage stability of the receiving end.It is shown by the simulation result that,compared with the existing operation mode of central chian power grid,the method proposed in this paper not only strengthens the impact resistance ability of the receiving end grid,but also reduces the rotation reserve capacity near the drop point area as well as has perfect economic performance.

关 键 词：多直流受端 发电机无功出力 电压稳定 多无功装置 协调优化 

分 类 号：TM761.12[电气工程—电力系统及自动化] TM721.1