多端风电汇集区域电网电压问题及控制策略研究Research on Voltage Problem and Control Strategy in Multi-Terminal Wind Power Converging Region of Power Grid
武海燕,慕腾,邢华栋,郭琪,刘会强,郭裕,雷轲
WU Haiyan,MU Teng,XING Huadong,GUO Qi,LIU Huiqiang,GUO Yu,LEI Ke
摘要(Abstract):
以内蒙古电网锡林浩特西部地区为例,针对多端风电汇集区域电网发生故障后系统节点电压越限的问题进行P-V(功率-电压)分析,并绘制风电场有功出力和控制电压值的P-V曲线,研究不同接线方式、区域负荷对P-V曲线的影响。通过仿真得出系统在不同负荷水平、运行工况下,站点P-V曲线变化趋势相同,即随风电出力逐渐增加,站点的控制电压下限值先降后升,且检修方式下的P-V曲线呈现更加明显的"V"形,电压跌落严重;同时区域负荷水平越低,站点控制电压下限值越小。最后提出了基于负荷分档的多端风电汇集区域电网输电断面和控制电压的协调控制策略,确定了不同负荷水平情况下该地区输电断面有功功率和站点电压的运行范围。
With the large-scale access of new energy to the power grid, its distribution and volatility have brought greater challenges to the power grid. Taking the western district of Xilinhot in Inner Mongolia Power Grid as an example, this paper conducts P-V analysis for the problem of the system node voltage exceeding the limit after the failure of the multiterminal wind power region of power grid, and draws the P-V curve of the wind farm active output and control voltage,and studies the impact on P-V curve of different modes of wiring and regional loads. Through simulation, it is concluded that the P-V curve of the site has the same changing trend under different load levels and operating conditions, that is, as the wind power output gradually increases, the lower limiting value of the control voltage of the site first drops and then rises, and the P-V curve under the maintenance mode appears a more obvious V shape, with a serious voltage drop. At the same time, the lower the regional load level, the smaller the lower limit of the site control voltage. Finally, this paper proposes a coordinated control strategy for the cross-section power flow and control voltage of the multi-terminal wind power converging region of power grid, and the operating range of the active power of the transmission section and the site voltage in the region under different load levels is determined.
关键词(KeyWords):
多端风电汇集区;P-V分析;静态电压稳定;输电断面;控制策略
multi-terminal wind power converging region;P-V analysis;static voltage stability;transmission section;control strategy
基金项目(Foundation): 内蒙古电力(集团)有限责任公司科技项目“锡林郭勒地区新能源送出受限问题及新技术应用研究”(2020-42)
作者(Author):
武海燕,慕腾,邢华栋,郭琪,刘会强,郭裕,雷轲
WU Haiyan,MU Teng,XING Huadong,GUO Qi,LIU Huiqiang,GUO Yu,LEI Ke
参考文献(References):
- [1]邢华栋,任思宇,张爱军,等.风电汇集站可控高压并联电抗器电压控制策略研究[J].内蒙古电力技术,2018,36(4):1-4.
- [2]张爱军,张晓萌,邢华栋.风电汇集电网500 k V降压运行线路启动方案研究[J].内蒙古电力技术,2018,36(4):29-32.
- [3]邢华栋,张爱军,孟庆天,等.多端风电汇集电网输电线路的功率极限研究[J].内蒙古电力技术,2017,35(2):7-9,14.
- [4]周红婷,宋玮,谢欢.风电汇集地区无功电压控制策略研究[J].华北电力技术,2015(3):13-17.
- [5]刘昭睿,齐军,胡耀东.风电集中接入对区域电网电压的影响及无功补偿优化配置[J].内蒙古电力技术,2015,33(6):1-6.
- [6]付高善,许叶林,高玉喜.新疆大规模风电汇集地区的次同步振荡控制方法研究[J].电力电容器与无功补偿,2018,39(1):117-123.
- [7]闫群民,申卓群,马永翔.基于P-V曲线法的光伏电源系统电压稳定性分析[J].现代电子技术,2020,43(6):110-114.
- [8]陈成,关文婷.基于P-V曲线法分析大规模风电接入对电网静态电压稳定的影响[J].电工技术,2017(11):140-142.
- [9]张斌,晁勤.风电并网时域和P-V曲线电压稳定性分析[J].电源技术,2015,39(2):327-330.
- [10]刘京波,崔正湃,吴宇辉,等.大规模风电汇集系统动态无功偿装置性能测试及改进措施探讨[J].中国电力,2016,49(12):139-143.
- [11]毕悦,刘天琪,陈云超,等.不同拓扑结构风电汇集系统的电压稳定性分析[J].科学技术与工程,2017,17(9):30-35.
- [12]李朝阳,王维庆,常喜强,等.基于风电汇集地区无功源优化控制技术的研究[J].电力电容器与无功补偿,2016,37(9):95-99.
- [13]周红婷,宋玮.计及动态无功控制影响的大规模风电汇集地区电压稳定性分析[J].电力系统保护与控制,2016,44(7):13-18.
- [14]李朝阳,常喜强,张锋,等.针对风电汇集地区无功电压的研究[J].四川电力技术,2017,40(2):51-55.
- 多端风电汇集区
- P-V分析
- 静态电压稳定
- 输电断面
- 控制策略
multi-terminal wind power converging region - P-V analysis
- static voltage stability
- transmission section
- control strategy