电力系统保护与控制Issue(16)：118-121,4.
串变调压电炉变压器差动保护研究
Research on differential protection of the furnance transformer which adopts series transformer used for voltage-regulation
栗磊 1宋小会 2刘星 3梁亚波 1李国斌 3姜睿智 3郭志忠2
作者信息
- 1. 国网宁夏电力科学研究院，宁夏 银川750001
- 2. 哈尔滨工业大学电气工程及自动化学院，黑龙江 哈尔滨 150001
- 3. 许继电气股份有限公司，河南 许昌 461000
- 折叠
摘要
Abstract
The-three-single-phase-on-load-transformer-tap-changing-furnace-transformer-has-the-advantages-of-wide-voltage-controlled-range-and-frequent-voltage-controlled-frequently,-.-This-paper-presents-the-differential-protection-device-of-the-furnance-transformer-should-calculate-the-balance-coefficient-of-the-differential-protection-in-real-time.-First,-The-the-gear-information-of-3-single-phase-electric-furnace-transformer-is-converted-to-BCD-code-information-through-the-OLTC-gear-controller;then-the-differential-protection-device-accesses-the-converted-BCD-code-through-switch-signal-and-decodes-the-information.;finally,-according-to-the-transformer-voltage-total-stallsgears,-each-phase-current-transformer-tap-,-low-voltage-side-of-the-highest-and-lowest-voltage-nominal-voltage,-each-phase-current-working-voltage-of-low-voltage-side-is-calculated,-combined-with-the-transformer-rated-capacity,-rated-voltage-of-the-high-voltage-side,-the-differential-current-calculation-is-adjusted-in-real-time-according-to-the-current-tap-of-the-furnace-transformer;.-this-This-method-solves-the-differential-current-electric-transformer-differential-protection-calculation-problem-is-not-correct.-The-engineering-practice-shows-that-the-methods-can-increase-the-accuracy-of-the-differential-current-calculation-and-significantly-improve-significantly-the-differential-current-protection-sensitivity.关键词
电炉变压器保护/纵差保护/平衡系数/有载调压Key words
furnance transformer/differential protection of furnance transformer/balance coefficient/load voltage regulation分类
信息技术与安全科学引用本文复制引用
栗磊,宋小会,刘星,梁亚波,李国斌,姜睿智,郭志忠..串变调压电炉变压器差动保护研究[J].电力系统保护与控制,2014,(16):118-121,4.
