柔直换流阀损耗解析计算及其误差分析

doi:10.11930/j.issn.1004-9649.202108111

中国电力 ›› 2022, Vol. 55 ›› Issue (4): 78-84.DOI: 10.11930/j.issn.1004-9649.202108111

• 基于电力电子装备的配电网运行控制与形态演变 • 上一篇下一篇

柔直换流阀损耗解析计算及其误差分析

李标俊¹, 向权舟¹, 姚传涛¹, 余琼²

1. 中国南方电网有限责任公司超高压输电公司天生桥局，贵州兴义 5624002;
2. 荣信汇科电气股份有限公司，辽宁鞍山 114051

收稿日期:2021-08-30 修回日期:2022-03-12 出版日期:2022-04-28 发布日期:2022-04-24
作者简介:李标俊（1982—），男，高级工程师，从事高压直流输电运行维护研究，E-mail：libiaojun@163.com;余琼（1983—），男，通信作者，博士，高级工程师，从事柔性直流输电换流阀研究，E-mail：yuqiong@rxhk.com
基金资助:
中国南方电网有限责任公司科技项目（CGYKJXM20180173）

Loss Analytic Calculation and Error Analysis for HVDC Converter

LI Biaojun¹, XIANG Quanzhou¹, YAO Chuantao¹, YU Qiong²

1. Tianshengqiao Bureau, EHV transmission company of China Southern Power Grid Co., Ltd., Xingyi 5624002, China;
2. Rongxin Huiko Electric Co., Ltd., Anshan 114051, China

Received:2021-08-30 Revised:2022-03-12 Online:2022-04-28 Published:2022-04-24
Supported by:
This work is supported by Science and Technology Project of China Southern Power Grid Co., Ltd. (No.CGYKJXM20180173)

摘要/Abstract

摘要： 模块化多电平换流器（MMC）柔直换流阀损耗是系统重要的性能及经济评价指标，也是换流阀功率器件选型、结温评估、冷却系统设计的直接依据。换流阀损耗主要为绝缘栅双极型晶体管（IGBT）、二极管等功率器件的导通损耗和开关损耗，占比达到90%以上。目前已有大量关于柔直换流阀损耗计算及优化方法研究成果。本文在现有解析计算法的基础上，进一步精确推导得到涵盖系统工况及器件特性的损耗计算通用表达式。提取了与损耗关联的影响因子及其权重，为损耗优化提供了依据。考虑到实际工程换流阀为电平逼近调制策略，分析解析计算法的误差来源，提出计算精度更高的基于工程运行现场数据录波的损耗计算方法。

关键词: 换流阀损耗, 解析法, 波形法, 损耗影响因子

Abstract: The loss of modular multilevel converter (MMC) HVDC converter valve is not only an important performance and economic evaluation index of the system, but also the direct basis for the selection of converter valve power devices, junction temperature evaluation and cooling system design. The main converter valve loss are the conduction loss and switching loss of power devices such as IGBT and Diode, accounting for more than 90%. At present, there are a large number of research results on the loss calculation and optimization methods of MMC HVDC converter valve. Based on the existing analytical calculation methods, this paper obtains the general loss calculation expression covering the system working conditions and device characteristics through further accurate derivation. The influence factors associated with loss and their weights are extracted, which provides a basis for targeted loss optimization. Considering that the nearest level control strategy is adopted for the converter valve in practical engineering, the error sources of the analytical calculation method are analyzed, and a feasible and high precision loss calculation method based on waveform data of project site is proposed.

Key words: converter loss, analytic method, waveform method, loss influence factor

李标俊, 向权舟, 姚传涛, 余琼. 柔直换流阀损耗解析计算及其误差分析[J]. 中国电力, 2022, 55(4): 78-84.

LI Biaojun, XIANG Quanzhou, YAO Chuantao, YU Qiong. Loss Analytic Calculation and Error Analysis for HVDC Converter[J]. Electric Power, 2022, 55(4): 78-84.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.202108111

https://www.electricpower.com.cn/CN/Y2022/V55/I4/78

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柔直换流阀损耗解析计算及其误差分析

Loss Analytic Calculation and Error Analysis for HVDC Converter

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