Operating Voltage Characteristics Analysis of Medium Voltage Side Reactive Power Compensation for UHV Transformer

ZHANG Lei; YU Pengjun; LU Tianlin; XU Jiabao; ZHU Zewei; LI Zhenhua; YANG Nan

doi:10.13296/j.1001-1609.hva.2021.01.015

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Operating Voltage Characteristics Analysis of Medium Voltage Side Reactive Power Compensation for UHV Transformer

更新时间：2025-04-26

- Operating Voltage Characteristics Analysis of Medium Voltage Side Reactive Power Compensation for UHV Transformer
- High VoltageApparatus Vol. 57, Issue 1, Pages: 100-107+115(2021)
- 作者机构：
  
  三峡大学电气与新能源学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2021.01.015
  CLC： TM761.12;TM40
- Published：2021
- 稿件说明：
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[1]张磊,余朋军,卢天林,徐加宝,朱泽伟,李振华,杨楠.特高压变压器中压侧无功补偿运行电压特性分析[J].高压电器,2021,57(01):100-107+115.

ZHANG Lei, YU Pengjun, LU Tianlin, et al. Operating Voltage Characteristics Analysis of Medium Voltage Side Reactive Power Compensation for UHV Transformer[J]. High voltageapparatus, 2021, 57(1): 100-107+115.
[1]张磊,余朋军,卢天林,徐加宝,朱泽伟,李振华,杨楠.特高压变压器中压侧无功补偿运行电压特性分析[J].高压电器,2021,57(01):100-107+115. DOI： 10.13296/j.1001-1609.hva.2021.01.015.

ZHANG Lei, YU Pengjun, LU Tianlin, et al. Operating Voltage Characteristics Analysis of Medium Voltage Side Reactive Power Compensation for UHV Transformer[J]. High voltageapparatus, 2021, 57(1): 100-107+115. DOI： 10.13296/j.1001-1609.hva.2021.01.015.

摘要

特高压变压器无功补偿配置有中压侧补偿和低压侧补偿两类

我国常用的低压侧无功补偿方案与国际相关标准采用的中压侧无功补偿方案不相符

在补偿效果与设备投资方面存在一些差异。文中针对国内研发的1 000 kV特高压自耦变压器

从理论上分析了其运行时产生的无功损耗情况以及中/低压侧补偿对运行电压的影响。然后采用PSCAD/EMTDC软件仿真

分析了特高压变压器不同侧无功补偿时各侧母线电压的波动水平和补偿效果。结果表明:在主变中压侧无功补偿产生的电压波动较在低压侧补偿更低

对运行安全更有利

且可补偿的容量更高

补偿效果更好。

Abstract

UHV transformer reactive power compensation has such two types as medium-voltage side compensation and low-voltage side compensation.The low-voltage side reactive power compensation solution commonly used in China does not conform to the medium-voltage side reactive power compensation solution adopted by relevant international standards with some difference in both compensation effect and equipment cost.In view of 1 000 kV UHV autotransformer developed in China

the reactive power loss and influence of mid/low-voltage side compensation on the operating voltage is analyzed theoretically.Then PSCAD/EMTDC software is used to simulate analyze the fluctuation level and compensation effect of each bus voltage when reactive power compensation is performed on different sides of the UHV transformer.It is shown by the result that the voltage fluctuation due to reactive power compensation at medium voltage side of UHV transformer is lower than that in the low voltage side

which is beneficial for operation safety

high in compensation capacity and better in compensation efficiency.

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