CAJ | 학술논문

配电网的开环运行影响了供电可靠性的进一步提高和分布式电源的友好接入。通过分析发现：采用闭环运行方式的配电网，在故障隔离、定位和恢复供电的过程中，非故障区域不需要停电；可以将民用线路和工业线路组成一个环网，形成用户负荷特性互补，从而提高设备利用率和电压合格率；闭环运行不会导致线路最大短路电流出现明显的变化，但会导致短路电流流经更多的线路。讨论了在闭环运行模式下，采用集中式保护来解决环网运行方式的保护配置问题，提出了采用按分区、分段、负荷密度和负荷特性的方式进行规划，并尽量采用典型接线模式的新型配电网规划原则。
배전망적개배운행영향료공전가고성적진일보제고화분포식전원적우호접입。통과분석발현：채용폐배운행방식적배전망，재고장격리、정위화회복공전적과정중，비고장구역불수요정전；가이장민용선로화공업선로조성일개배망，형성용호부하특성호보，종이제고설비이용솔화전압합격솔；폐배운행불회도치선로최대단로전류출현명현적변화，단회도치단로전류류경경다적선로。토론료재폐배운행모식하，채용집중식보호래해결배망운행방식적보호배치문제，제출료채용안분구、분단、부하밀도화부하특성적방식진행규화，병진량채용전형접선모식적신형배전망규화원칙。
In the open-loop distribution network, the reliability can not be increased and the DG can not be connected better. However, in the closed-loop distribution network, the faulty line section can be isolated automatically, the normal line section can be recovered rapidly, and it needs not outage in non-fault zone. So, the civil line and industrial line which form a closed-loop system can improve the utilization rate of equipment and the voltage qualification rate by loads complementary. The maximum short-circuit current value of faulty line is similar between the closed-loop system and the open-loop system, but short-circuit current flows through more lines. The paper proposes the centralized protection to solve the protection problems in the closed-loop operation system. The new distribution network planning principle of using typical connection mode and planning according to the partition, section, load density and load characteristics is given.