一起高壓直流輸電工程VBE系統(tǒng)故障跳閘事件分析
張朝輝1,蘇杰和1,楊家豪2,王晨濤1
(1 中國(guó)南方電網(wǎng)有限責(zé)任公司超高壓輸電公司廣州局,廣東 廣州 510663;2 廈門大學(xué)嘉庚學(xué)院,福建 漳州 363105)
摘 要:針對(duì)一起高壓直流輸電工程VBE 系統(tǒng)故障跳閘的事故,介紹了事故概況,經(jīng)事故分析與現(xiàn)場(chǎng)檢查,發(fā)現(xiàn)該跳閘事故的原因是直流控制保護(hù)系統(tǒng)低電壓判據(jù)與VBE 系統(tǒng)配合存在問題,給出了優(yōu)化置位“低交流電壓”信號(hào)邏輯的整改措施,并結(jié)合EOC 信號(hào)電氣參數(shù)特性完成了邏輯調(diào)試,確保了閥控系統(tǒng)的可靠性及冗余性。
關(guān)鍵詞:高壓直流輸電;閥基電子設(shè)備;跳閘事件
中圖分類號(hào):TM721.1 文獻(xiàn)標(biāo)識(shí)碼:B 文章編號(hào):1007-3175(2020)04-0052-04
Analysis of a VBE System Fault Trip Event in HVDC Transmission Project
ZHANG Zhao-hui1, SU Jie-he1, YANG Jia-hao2, WANG Chen-tao1
(1 Guangzhou Bureau, CSG EHV Power Transmission Company, Guangzhou 510663, China;
2 Xiamen University Tan Kah Kee College, Zhangzhou 363105, China)
Abstract: Aiming at an accident of valve base electronics (VBE) system fault tripping in HVDC transmission project, this paper introduced the accident overview. Via accidents analysis and on-site inspection, it was found that the cooperating problem between the low voltage criterion of DC control and protection system and the VBE system caused the tripping accident. This paper gave the rectification measures of optimizing setting “low AC voltage” signal logic and combined with EOC signal electric parameters characteristic to finish the logical debugging to ensure the reliability and redundancy of valve control system.
Key words: HVDC transmission; valve base electronic equipment; trip event
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