计及地磁暴影响的电力系统事故链仿真模型

康小宁; 徐旖旎; 张亚刚; 郭明达

doi:10.11884/HPLPB201931.190173

计及地磁暴影响的电力系统事故链仿真模型

doi: 10.11884/HPLPB201931.190173

西安交通大学陕西省智能电网重点实验室, 西安 710049

基金项目:

国家重点研发计划项目 2016YFC0800100

详细信息

作者简介:
康小宁(1968-), 男, 教授, 从事电力系统继电保护与变电站综合自动化系统研究, kangxn@xjtu.edu.cn

通讯作者:
徐旖旎(1994—), 女, 硕士研究生, 研究方向为地磁暴影响下电力系统风险评估技术, xyni530@gmail.com

中图分类号: TM721
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- 被引次数: 0
出版历程
- 收稿日期: 2019-05-18
- 修回日期: 2019-06-15
- 刊出日期: 2019-07-15

Power system fault chain simulation model considering effect of geomagnetic storm

Shaanxi Key Laboratory of Smart Grid, Xi'an Jiaotong University, Xi'an 710049, China

摘要

摘要: 地磁暴影响下地磁感应电流(GIC) 流过变压器中性点, 引起变压器无功损耗增加, 在强地磁暴环境中, 系统的无功补偿装置可能过载, 母线电压下降, 可能引发连锁故障, 继而导致大停电事故。对比事故链各环节特点和因磁暴导致的电力系统停电事故的发展规律, 使用事故链模型来仿真实现地磁暴条件下的电网停电过程。基于自组织临界理论和非故障线路的安全稳定裕度来确定连锁故障的传播路径。结合IEEERTS79系统参数, 估算各母线的地理位置, 借助PowerWorld仿真软件, 以该系统为例, 研究结果验证了所提事故链模型可以反映给定电网条件下, 地磁暴参数对电力系统事故链集与薄弱环节辨识的影响, 研究结果可为量化和防治磁暴电网灾害提供依据。
- 地磁暴 /
- 事故链模型 /
- 自组织临界系数 /
- 稳定裕度 /
- 薄弱环节
Abstract: In the condition of strong magnetic storm, geo-magnetically induced current (GIC) flowing through the neutral point of the transformer, causes the increase of reactive power loss of the transformer.This might lead to overload of the reactive power compensation device, drop of the bus voltage and occurrence of a chain fault, which in turn causes a blackout of the system.Comparing the characteristics of each link in the fault chain and the development law of the power system blackout caused by magnetic storms, the fault chain model is used to simulate the process of power outage under conditions of geomagnetic storm.The article determines the propagation path of cascading failures based on the self-organizing critical theory and the safety margin of non-faulty circuits.Combining the IEEE-RTS 79 system parameters, the geo-location of each bus is estimated.Taking this system as an example and using Power World simulator, the research results verify that the proposed model can reflect the geomagnetic storm parameters against the power system fault chains and the identification of weak links under given grid conditions.The research results can provide a basis for quantifying and preventing disasters in the magnetic storm condition.
- geo-magnetic storm /
- fault chain model /
- self-organized critical theory /
- stability margin /
- weak links

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图 1 结合动态故障树的事故链模型

Figure 1. Fault chain model combined with dynamic fault tree theory

下载: 全尺寸图片幻灯片

图 2 IEEE-RTS79测试系统单线图

Figure 2. Grid construction of IEEE-RTS79

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图 3 计及地磁暴影响的电力系统事故链仿真模型

Figure 3. Power system fault chain simulation model considering the impact of geomagnetic storm

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表 1 IEEE-RTS79系统各母线的地理位置

Table 1. Estimated geo-location of IEEE-RTS79

No.	latitude/(°)	longitude/(°)	No.	latitude/(°)	longitude /(°)
1	45.276 7	113.770 5	13	45.742 8	114.732 7
2	45.319 9	113.765 8	14	45.390 7	115.061 5
3	45.005 7	114.560 6	15	45.174 2	115.180 3
4	45.094 7	114.188 9	16	45.224 9	115.450 2
5	45.320 4	114.133 9	17	45.192 9	115.133 6
6	45.553 7	114.507 8	18	45.199 2	115.397 0
7	45.451 7	113.608 0	19	45.398 1	115.235 7
8	45.329 6	113.810 7	20	45.75 9	115.405 0
9	45.366 3	114.526 0	21	45.415 9	115.680 5
10	45.366 3	114.526 0	22	46.022 5	115.833 5
11	45.366 3	114.526 0	23	45.932 2	115.590 0
12	45.366 3	114.526 0	24	45.005 7	114.360 6

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表 2 初始故障的设定

Table 2. Initial failure setting

geomagnetic data	SOC lines	γ_i
E=0	L10(B6-10) L25(B15-21) L23(B14-16)	1.547 0 1.361 6 1.165 9
E=12 V/km，130°	L10(B6-10) L25(B15-21) L23(B14-16)	1.496 1 1.347 1 1.153 4
E=12 V/km，46°	L10(B6-10) L25(B15-21) L7(B3-24，T) L23(B14-16)	1.480 7 1.340 2 1.193 3 1.152 1

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表 3 不同磁暴条件下系统的事故链集

Table 3. Fault chain sets

geomagnetic data	No.	fault chains
E=0	1	L10-L5-L25-L29
	2	L25-L23-L30-L28-L34-L37
	3	L23-L29
E=12 V/km，130°	4	L10-L5-L25-L29
	5	L10-L5-L25-L30-L33-L28-L34
	6	L25-L23-L30-L28-L34-L37
	7	L23-L29
	8	L23-L7(T)
E=12 V/km，46°	9	L10-L5-L25-L29
	10	L10-L5-L25-L30-L33-L28
	11	L25-L28-L30-L28-L34
	12	L7(T)- L23
	13	L7(T)-L6-L2-L28-L23
	14	L7(T)-L28-L24-L25-L33-L34
	15	L23-L29

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表 4 事故链13的生成过程

Table 4. Process of fault chain 13

fault line	non-faulty line	s_i
L7(B3-24，T)	L6(B3-9)	1.1102
L6(B3-9)	L2(B1-3)	1.0328
L2(B1-3)	L28(B14-16)	1.0293
L28(B14-16)	L23(B14-16)	1.0565
L23(B14-16)	blackout	—

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