海上风电场孤网状态下的备用柴油发电机方案研究

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英文篇名：Research on the Standby Diesel Generator Set Scheme of Offshore Wind Farm in the State of Island Operation Mode 作者：郑明 ; 杨源 ; 沈云 ; 徐晓燕 ; 陶艳 英文作者：ZHENG Ming;YANG Yuan;SHEN Yun;XU Xiaoyan;TAO Yan;China Energy Engineering Group Guangdong Electric Power Design Institute Co., Ltd.;School of Electrical Engineering and Information, Sichuan University; 关键词：海上风电场 ; 孤网状态 ; 无功过电压 ; 保护整定 英文关键词：offshore wind farm;;island operation mode;;reactive power overvoltage;;relay protection setting 中文刊名：NYNF 英文刊名：Southern Energy Construction 机构：中国能源建设集团广东省电力设计研究院有限公司;四川大学电气信息学院; 出版日期：2019-03-25 出版单位：南方能源建设 年：2019 期：v.6;No.22 基金：中国能建广东院科技项目“海上风电场大孤岛方式备用柴油发电机运行关键技术研究”(EV04921W) 语种：中文; 页：NYNF201901006 页数：7 CN：01 ISSN：44-1715/TK 分类号：30-36

摘要

[目的]为保障海上风电场孤网状态下的安全可靠运行,对备用柴油发电机组的配置方案与运行方式进行了研究。[方法]通过对孤网状态下的电气负荷、无功过电压、短路电流、谐波及保护整定进行分析,来验证备用柴油发电机组配置方案的合理性。[结果]研究表明:在文章给定的案例下,配置额定容量为1.2 MW的备用柴油发电机及2 Mvar的电抗器时,在运行维护的工况下,一半风机接入孤网时可满足风机和海上升压站的负荷需求和电压要求,也满足35 kV海缆无功需求。同时,为了避免谐波谐振,不推荐孤网备用柴油发电机组为风机提供偏航电源。对于柴油发电机组升压变压器、海上升压站接地变兼站用变,推荐采用复压过流作为主保护。[结论]配置方案为研究海上风电场孤网运行方案提供了思路。
        [Introduction]In order to ensure the safe and reliable operation of offshore wind farm, this paper analyzes the configuration scheme and operation mode of standby diesel generator set under the condition of isolated networks of offshore wind farm. [Method]Considering the diesel generator capacity accounting, reactive overvoltage, short-circuit current, harmonic analysis and protection setting under the condition of isolated grids of offshore wind farms, the rationality of the standby diesel generator set scheme was verified. [Result]The results show that the standby diesel generator set with rated capacity of 1.2 MW can meet the load requirements and voltage requirements of offshore wind turbines and offshore wind station under the condition of operation and maintenance, with half of the wind turbines connected to island operation mode and 2 Mvar reactors, also meet the 35 kV submarine cable reactive demand. At the same time, in order to avoid harmonic resonance, diesel generator is not recommended to provide yaw power for the wind turbines. For transformer of diesel generator and grounding transformer for offshore wind station, it is recommended to use recompression and overcurrent as main protection. [Conclusion]The configuration scheme of this paper provides a solution to the study of the isolated operation mode of offshore wind farms.

引文

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