Quantitative Assessment Method for Transient Voltage of Distribution Network with High-Penetration Wind Power
With the further penetration of distributed wind power in the distribution network, assessing the factors affecting the transient voltage stability of the power grid becomes increasingly significant. However, the existing indexes for evaluating transient voltage stability are not applicable to scena...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
State Grid Energy Research Institute
2022-07-01
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| Series: | Zhongguo dianli |
| Subjects: | |
| Online Access: | https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202110085 |
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| Summary: | With the further penetration of distributed wind power in the distribution network, assessing the factors affecting the transient voltage stability of the power grid becomes increasingly significant. However, the existing indexes for evaluating transient voltage stability are not applicable to scenarios with multiple transient characteristics. In this paper, the assessment idea of a multiple-two-element notation criterion is outlined. For voltage sag, a safety margin index of voltage sag of the bus is proposed. Next, a safety margin index of the overvoltage of the bus is further constructed. A step factor is introduced to combine the two indexes effectively into a safety margin index of the transient voltage of the bus based on an improved multiple-two-element notation. Then, a safety margin index of regional transient voltage is proposed to measure the transient voltage stability of a certain region. Finally, Matlab/Simulink is used to simulate the distribution network with high-penetration wind power according to the proposed indexes. The effectiveness and universality of the proposed indexes are verified while the factors affecting the transient voltage stability of the distribution network are quantified. |
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| ISSN: | 1004-9649 |