TCT式并联电抗器控制绕组匝间故障保护方案
发布时间：2018-10-14 14:14
【摘要】：基于对晶闸管控制变压器(TCT)式并联电抗器的本体结构和控制绕组匝间短路故障特性分析,提出一种针对其控制绕组匝间故障保护的新方案。该方案综合利用控制绕组匝间故障时网侧零序电压低、补偿绕组零序电流大的特点,采用主判据和辅助判据相结合的方式,主判据采用零序过电流保护元件,采取两段式的整定方式以兼顾匝间故障下保护的灵敏度和容量调节过程中的可靠性;辅助判据由网侧零序高电压闭锁元件构成,并增加闭锁判据,保证TCT式并联电抗器在系统非全相运行、区外不对称故障、电抗器空投、容量调节等暂态过程中保护可靠不误动。基于仿真测试结果确定了所提方案的具体整定方法,并对灵敏度进行了校验,分析计算的结果证明了所提方案的可行性和有效性。
[Abstract]:Based on the analysis of the main structure of (TCT) type parallel reactor of thyristor control transformer and the characteristics of inter-turn short circuit fault of control winding, a new scheme for inter-turn fault protection of control winding is proposed. The scheme synthetically utilizes the characteristics of low zero-sequence voltage and large zero-sequence current of compensation winding when the inter-turn fault of control winding is controlled. The main criterion is combined with the auxiliary criterion and the zero-sequence over-current protection element is adopted in the main criterion. In order to take into account the sensitivity of protection under inter-turn fault and the reliability of capacity adjustment, the auxiliary criterion is made up of zero-sequence high voltage latch elements on the grid side, and the latching criterion is added. It is ensured that the TCT shunt reactor is protected reliably and unmistakably during the transient process of system non-phase operation, out-of-area asymmetric fault, reactor air-drop, capacity regulation, and so on. Based on the simulation test results, the specific tuning method of the proposed scheme is determined, and the sensitivity is verified. The results of analysis and calculation prove the feasibility and effectiveness of the proposed scheme.
【作者单位】： 华北电力大学新能源电力系统国家重点实验室;
【基金】：国家自然科学基金资助项目(51677069)~~
【分类号】：TM472;TM77
本文编号：2270715
[Abstract]:Based on the analysis of the main structure of (TCT) type parallel reactor of thyristor control transformer and the characteristics of inter-turn short circuit fault of control winding, a new scheme for inter-turn fault protection of control winding is proposed. The scheme synthetically utilizes the characteristics of low zero-sequence voltage and large zero-sequence current of compensation winding when the inter-turn fault of control winding is controlled. The main criterion is combined with the auxiliary criterion and the zero-sequence over-current protection element is adopted in the main criterion. In order to take into account the sensitivity of protection under inter-turn fault and the reliability of capacity adjustment, the auxiliary criterion is made up of zero-sequence high voltage latch elements on the grid side, and the latching criterion is added. It is ensured that the TCT shunt reactor is protected reliably and unmistakably during the transient process of system non-phase operation, out-of-area asymmetric fault, reactor air-drop, capacity regulation, and so on. Based on the simulation test results, the specific tuning method of the proposed scheme is determined, and the sensitivity is verified. The results of analysis and calculation prove the feasibility and effectiveness of the proposed scheme.
【作者单位】： 华北电力大学新能源电力系统国家重点实验室;
【基金】：国家自然科学基金资助项目(51677069)~~
【分类号】：TM472;TM77
【相似文献】
相关期刊论文 前6条
1 周宝文;真空接触器控制绕组的过热及短路保护[J];低压电器;1992年02期
2 秦和;三相电容运行电动机工作原理初步分析[J];电工技术杂志;1983年07期
3 郑涛;赵彦杰;金颖;张振环;崔大伟;刘洋;杨通;秦川;杨琪;;晶闸管控制变压器式可控高抗本体保护方案[J];电网技术;2014年09期
4 胡建华;;用霍尔器件改善电机效率[J];微特电机;1980年04期
5 尹健宁;田铭兴;王果;柳轶彬;原东f;;磁集成技术在变压器式可控电抗器中的应用[J];高压电器;2014年05期
6 ;[J];;年期
相关博士学位论文 前2条
1 卜飞飞;变速运行的定子双绕组异步发电机系统研究[D];南京航空航天大学;2014年
2 刘毅;无刷双馈电机独立发电系统控制方法研究[D];华中科技大学;2015年
相关硕士学位论文 前2条
1 柳轶彬;变压器式可控电抗器的调节模式及其控制策略研究[D];兰州交通大学;2015年
2 尹健宁;变压器式可控电抗器磁集成结构设计理论研究[D];兰州交通大学;2015年
，本文编号：2270715
本文链接：https://www.wllwen.com/kejilunwen/dianlidianqilunwen/2270715.html
