CAJ | 학술논문

　　从区域电网整体考虑给出了区域电网集中式网络保护主保护和后备保护的定义，提出了分层的差动保护方法。针对区域电网拓扑结构的特点提出了以双层链表结构进行电网拓扑结构的表达方法，并结合具体实例分析了拓扑结构的识别方法。还对电网集中式保护的故障处理流程进行了研究，提出了按照电流判启动后先电压选线调度再计算差动跳闸的原则。根据提出的区域电网集中式保护方案进行了实现，并用RTDS建立了包括4个220 kV变电站在内的区域电网仿真系统。动模试验结果表明，使用区域电网集中式差动保护除传统主保护功能外，其后备差动保护比传统远后备保护具有选择性好，灵敏度高，动作速度快的特点。
　　종구역전망정체고필급출료구역전망집중식망락보호주보호화후비보호적정의，제출료분층적차동보호방법。침대구역전망탁복결구적특점제출료이쌍층련표결구진행전망탁복결구적표체방법，병결합구체실례분석료탁복결구적식별방법。환대전망집중식보호적고장처리류정진행료연구，제출료안조전류판계동후선전압선선조도재계산차동도갑적원칙。근거제출적구역전망집중식보호방안진행료실현，병용RTDS건립료포괄4개220 kV변전참재내적구역전망방진계통。동모시험결과표명，사용구역전망집중식차동보호제전통주보호공능외，기후비차동보호비전통원후비보호구유선택성호，령민도고，동작속도쾌적특점。
From the consideration of the regional power grid as a whole, this paper defines the main protection and backup protection of the centralized network of regional power grid protection, and proposes the hierarchical differential protection method. Double-linked list structure is used to express the grid topology according to characteristics of the regional grid topology, and the identification of topology is analyzed with specific examples. This paper also studies fault handling process of the grid centralized protection and proposes the principle of scheduling voltage line selection firstly and then calculating differential tripping after the start of the current-contracting. A regional power grid simulation system including four 220 kV substations is established using RTDS. Dynamic simulation test results show that except for possessing the traditional main protection functions, the reserve differential protection of centralized differential protection of the regional power grid has the features of good selectivity, high sensitivity, and fast action compared with traditional remote backup protection.