直流孤岛运行协调优化控制研究  

Research on Coordinated Optimization Control for Islanding Operation

作　　者：李传栋 王建明 杨桂钟 张炳达[4] 

机构地区：[1]国网福建省电力有限公司电力科学研究院,福州350007 [2]全球能源互联网发展合作组织,北京100000 [3]福建电力调控中心,福州350003 [4]智能电网教育部重点实验室(天津大学),天津300072

出　　处：《电力系统及其自动化学报》2017年第11期123-128,150,共7页Proceedings of the CSU-EPSA

摘　　要：基于时域仿真手段全面研究了直流孤岛系统的运行特性,尤其是频率稳定特性。首先研究了直流孤岛系统的无功电压和功角稳定特性;其次在分析频率稳定特性时,考虑两类典型故障对孤岛频率稳定的影响提出了提高频率稳定性的控制措施,研究了水轮机水锤效应系数、调速器增益系数、负荷频率因子和直流频率控制器增益等关键参数与孤岛频率稳定性间的关系,并基于时域灵敏度分析方法给出了参数优化方向;最后提出了协调优化直流频率控制器与配套电源调速器的方案,包括两者死区定值的配合和参数的优化。锦苏特高压直流的实测调试数据验证了方案的有效性。Based on the simulation tools in time domain, the operation characteristics of a DC islanding system, especially its frequency stability, are comprehensively studied in this paper. First, the reactive voltage and power angle characteristics of the DC islanding system are studied. Then, the effect of two typical faults on the frequency stability of islanding mode is considered, and control measures are proposed to improve the frequency stability. The relationship between the frequency stability of islanding mode and several key factors, such as water hammer effect coefficient, governor gain coefficient, load frequency factor and DC frequency controller gain, is studied, and the parameter optimization path is given through the method of sensitivity analysis in time domain. Finally, the coordinated optimization strategy for the DC frequency controller and the ancillary power source governor is proposed, including the matching scheme for the corresponding two dead zones and the optimization of parameters. The effectiveness of the proposed strategy is verified by the actual measurement data from the field test on Jinsu UHVDC line.

关 键 词：孤岛运行方式 运行特性 直流频率控制器 调速器 协调优化 

分 类 号：TM743[电气工程—电力系统及自动化]