Lightning and Switching Overvoltages for 220kV Booster Substation Busbar After Installation of Series Reactors

DING Zhe; WU Jialei; ZHANG Yu; HU Jin; DONG Ning; HE Shihan

doi:10.14044/j.1674-1757.pcrpc.2026.02.010

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Lightning and Switching Overvoltages for 220kV Booster Substation Busbar After Installation of Series Reactors

POWER CAPACITOR & REACTIVE POWER COMPENSATION | Research on System Application

Lightning and Switching Overvoltages for 220kV Booster Substation Busbar After Installation of Series Reactors
220kV升压站母线加装串抗后的雷电及操作过电压计算
Shanghai Waigaoqiao Power Generation Co., Ltd., Shanghai 200120, China
Xi'an University of Science and Technology, Xi'an 710600, China
Vol. 47, Issue 2, Pages: 90-97(2026)
DOI：10.14044/j.1674-1757.pcrpc.2026.02.010
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DING Zhe, WU Jialei, ZHANG Yu, et al. Lightning and Switching Overvoltages for 220kV Booster Substation Busbar After Installation of Series Reactors[J]. Power Capacitor & Reactive Power Compensation, 2026, 47(2): 90-97.
DOI：

DING Zhe, WU Jialei, ZHANG Yu, et al. Lightning and Switching Overvoltages for 220kV Booster Substation Busbar After Installation of Series Reactors[J]. Power Capacitor & Reactive Power Compensation, 2026, 47(2): 90-97. DOI： 10.14044/j.1674-1757.pcrpc.2026.02.010.

摘要

升压站母线接入串联电抗器后使系统参数发生改变，从而对过电压的传播过程和分布规律带来影响。为了某电厂扩容量工程的实施，需要对220kV母线串联电抗器的过电压进行计算分析。基于ATP/EMTP建立了包括发电机、变压器、串联电抗器、避雷器及输电线路等元件的电磁暂态模型，计算了电抗器及站内关键设备安装处的雷电过电压及操作过电压，并对绝缘配合安全性进行了分析，结果表明现有避雷器配置可以有效保障设备绝缘安全。

Abstract

After connection of the busbar of the step-up substation to the series reactor，the system parameters remainchanged，which in turn affects the propagation process and distribution of overvoltages. For the implementation of capacity expansion project of a power plant，it is necessary to calculate and analyze the overvoltages of 220kV busbar series reactor. An electromagnetic transient model，including such components as generators，transformers，series reactors，arresters，and transmission lines，is set up by using ATP/EMTP. The lightning overvoltages and switching overvoltages at the reactor and the installation locations of key equipment in the station are calculated and the safety of insulation coordination is analyzed. The results show that the existing arrester configuration can effectively assure the insulation safety of the equipment.

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references

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