雁淮直流送电能力与闭锁故障影响分析
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摘要
雁淮直流是山西首条直流特高压输电工程,雁淮直流工程投运后,山西电网呈现特高压交直流并列运行的局面。应用电力系统仿真软件,结合雁淮直流不同阶段电网结构变化情况,分析了雁淮直流不同阶段的送电能力与制约因素;研究了雁淮直流闭锁故障下与长治—南阳特高压交流的耦合特性,并制定了相应的控制措施;为雁淮直流投产后山西电网的安全稳定运行提供技术依据。
Yanhuai is the first DC UHV transmission project in Shanxi. After Yanhuai DC project was put into operation, UHV AC and DC were running in parallel in Shanxi power grid. Combined with power grid structural changes at different stages, power system simulation software was used to analyze the power transmission capacity and constraints at different stages. The coupling characteristics of Yanhuai DC under blocking fault with Changzhi-nanyang UHV AC were studied, and corresponding control measures were formulated. It provides technical basis for the safe and stable operation of Shanxi power grid after Yanhuai DC was put into operation.
Yanhuai is the first DC UHV transmission project in Shanxi. After Yanhuai DC project was put into operation, UHV AC and DC were running in parallel in Shanxi power grid. Combined with power grid structural changes at different stages, power system simulation software was used to analyze the power transmission capacity and constraints at different stages. The coupling characteristics of Yanhuai DC under blocking fault with Changzhi-nanyang UHV AC were studied, and corresponding control measures were formulated. It provides technical basis for the safe and stable operation of Shanxi power grid after Yanhuai DC was put into operation.
引文
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[2]凌卫家,孙维真.浙江交直流混联电网特性分析及运行控制[J].浙江电力,2016,37(2):8-11.
[3]韩晓慧,王联国.输电网优化规划模型及算法分析[J].电力系统保护与控制,2011,39(23):143-148.
[4]卢岑岑,吴跨宇.特高压交直流互联电网典型故障对火力发电厂厂用电系统的影响研究[J].浙江电力,2016,37(3):28-33.
[5]李响,郭志忠. N-1静态安全潮流约束下的输电断面有功潮流控制[J].电网技术,2005,29(3):29-32.
[6]赵晓莉,王健全.考虑静态安全约束的暂态稳定极限计算[J].江南大学学报,2004,3(4):353-356.
[7]邓晖,黄弘扬.浙江多馈入交直流混联电网电压稳定性分析[J].浙江电力,2017,38(4):1-4.