大规模电网多区域安全稳定紧急控制研究与实现
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摘要
传统系统主要针对已有故障与工作模式进行控制,通过对电网的离线计算获取详细控制方案,对出现概率小的故障缺乏可靠性。为此,设计了一种新的大规模电网多区域安全稳定紧急控制系统。设计依据广域测量技术的系统整体框架,控制主站利用高速通信网络采集不同控制子站的同步数据,实现对电网不稳定性的预测以及紧急控制,向控制子站发送控制命令,子站接收并执行控制命令。介绍了电压失稳判断方法,针对电压失稳情况采取集中切负荷紧急控制策略。分析了暂态攻角失稳判据,将暂态攻角稳定性紧急控制转换成高维非线性整数规划问题,完成对其的紧急控制。实验结果表明,经设计系统控制后,电网可保持稳定;系统采用方法判别准确性高,识别速度快;设计系统在数据完整性、可靠性等方面均较优,系统整体评分为92. 26分。说明设计系统整体控制性能强。
the traditional system mainly controls the existing fault and working mode,and obtains the detailed control scheme through the off-line calculation of the power grid,and is lack of reliability for the faults with small probability. A new multi area security and stability emergency control system for large-scale power grids is designed. Design the whole frame of the system based on the wide area measurement technology,control the main station to use the high-speed communication network to collect the synchronous data of different control sub stations,realize the prediction of the instability of the power grid and emergency control,send control commands to the control sub station,and receive and execute the control orders of the sub stations. The judgement method of voltage instability is introduced,and centralized load shedding emergency control strategy is adopted for voltage instability. The criterion of transient angle of attack instability is analyzed,and the emergency control of transient angle stability is converted to high-dimensional nonlinear integer programming problem,and the emergency control is completed. The experimental results show that the power grid can be kept stable after the design of the system. The system has high accuracy and fast recognition speed,and the design system is better in data integrity and reliability,and the overall score of the system is 92. 26. It shows that the overall performance of the design system is strong.
the traditional system mainly controls the existing fault and working mode,and obtains the detailed control scheme through the off-line calculation of the power grid,and is lack of reliability for the faults with small probability. A new multi area security and stability emergency control system for large-scale power grids is designed. Design the whole frame of the system based on the wide area measurement technology,control the main station to use the high-speed communication network to collect the synchronous data of different control sub stations,realize the prediction of the instability of the power grid and emergency control,send control commands to the control sub station,and receive and execute the control orders of the sub stations. The judgement method of voltage instability is introduced,and centralized load shedding emergency control strategy is adopted for voltage instability. The criterion of transient angle of attack instability is analyzed,and the emergency control of transient angle stability is converted to high-dimensional nonlinear integer programming problem,and the emergency control is completed. The experimental results show that the power grid can be kept stable after the design of the system. The system has high accuracy and fast recognition speed,and the design system is better in data integrity and reliability,and the overall score of the system is 92. 26. It shows that the overall performance of the design system is strong.
引文
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[13]唐冠军,陈永华,罗剑波,等.集群风场并网地区无功电压紧急控制技术研究[J].电网与清洁能源,2017,33(1):107-114.
[14]李海坤,黄道姗,黄霆,等.基于区域电网间断面功率约束的电网静态电压稳定预防控制模型和算法[J].现代电子技术,2016,39(13):149-151.
[15]韩亮,白小会,陈波,等.张北±500kV柔性直流电网换流站控制保护系统设计[J].电力建设,2017,38(3):42-47.
[2]李碧君,侯玉强.紧急负荷调节用于安全稳定紧急控制的研究[J].电力系统保护与控制,2016,44(11):104-110.
[3]潘捷,郑惠萍,张红丽,等.±800 k V雁淮特高压直流送端电网安全稳定特性及控制策略[J].中国电力,2018,51(4):7-14.
[4]姜涛,贾宏杰,姜懿郎,等.跨区互联电网热稳定安全域边界近似方法[J].电工技术学报,2016,31(8):134-146.
[5]常帅兵,谭文,曾智勇.区域电网供电系统稳定性优化控制研究[J].计算机仿真,2016,33(12):90-94.
[6]李国庆,刘玢,陈厚合.大规模风电并网系统容量效益裕度计算模型研究[J].电力自动化设备,2016,36(7):1-6.
[7]徐遐龄,李勇,徐友平,等.区域互联大电网运行控制技术研究[J].电力科学与技术学报,2016,31(4):175-180.
[8]于淼,尚伟鹏,卢宁.基于直接神经动态规划的电力系统协调控制[J].系统仿真学报,2017,29(4):699-707.
[9]骆晨,陶顺,赵晨雪,等.主动配电网区域自适应性电压分层分区控制[J].现代电力,2016,33(3):29-34.
[10]葛浩天,张新慧.直流微电网建模与控制策略研究[J].自动化与仪器仪表,2017,(3):27-29.
[11]李勇.强直弱交区域互联大电网运行控制技术与分析[J].电网技术,2016,40(12):3756-3760.
[12]林爽,秦萃丽,王裴培,等.基于层次分析法的电网应急演练管理系统研究与实现[J].电子设计工程,2017,25(21):68-72.
[13]唐冠军,陈永华,罗剑波,等.集群风场并网地区无功电压紧急控制技术研究[J].电网与清洁能源,2017,33(1):107-114.
[14]李海坤,黄道姗,黄霆,等.基于区域电网间断面功率约束的电网静态电压稳定预防控制模型和算法[J].现代电子技术,2016,39(13):149-151.
[15]韩亮,白小会,陈波,等.张北±500kV柔性直流电网换流站控制保护系统设计[J].电力建设,2017,38(3):42-47.