CAJ | 학술논문

介绍了国内外中压配电网闭环运行方式及其特点；综合考虑可靠性及经济性，建立了配电网从开环运行升级为闭环运行的净收益模型，包括一种简化的中压电缆线路可靠性指标，即系统平均停电持续时间(SAIDI)评估模型；探讨了配电网闭环运行适用范围及实施难度。研究表明，国内现有配电网“闭环设计，开环运行”的供电模式限制了供电可靠性的进一步提升。对于经济发达、负荷密度大、有分布式电源接入以及可靠性要求高的地区，在条件允许的情况下，可考虑采用闭环运行方式(主要为来自同一母线的两馈线自环)；该运行方式虽然可能增加供电公司的成本，但能够在提升供电可靠性的同时保证良好的社会经济效益。
개소료국내외중압배전망폐배운행방식급기특점；종합고필가고성급경제성，건립료배전망종개배운행승급위폐배운행적정수익모형，포괄일충간화적중압전람선로가고성지표，즉계통평균정전지속시간(SAIDI)평고모형；탐토료배전망폐배운행괄용범위급실시난도。연구표명，국내현유배전망“폐배설계，개배운행”적공전모식한제료공전가고성적진일보제승。대우경제발체、부하밀도대、유분포식전원접입이급가고성요구고적지구，재조건윤허적정황하，가고필채용폐배운행방식(주요위래자동일모선적량궤선자배)；해운행방식수연가능증가공전공사적성본，단능구재제승공전가고성적동시보증량호적사회경제효익。
The closed-loop operation mode and features of medium voltage distribution networks at home and abroad are described.With both reliability and economy considered,a net profit model for upgrading the distribution network from open-loop operation to closed-loop operation is developed,including a simplified evaluation model of system average interruption duration index(SAIDI) for a medium voltage cable feeder.The difficulties and applicable scopes of closed-loop operation are discussed.The study results show:i)further improvement of power supply reliability is impeded because of the existing power supply mode of closed-loop design and open-loop operation for domestic distribution networks;ii) for areas of developed economy,large load density,distributed generation and high reliability requirement,the closed-loop operation mode (mainly one of two feeders from the same bus) can be considered for use conditions permitting.Despite a higher cost for the power supply company owing to the use of the closed-loop operation mode,power supply reliability is improved while good social and economic benefits are ensured at the same time.