电网与清洁能源
電網與清潔能源
전망여청길능원
ADVANCES OF POWER SYSTEM & HYDROELECTRIC ENGINEERING
2014年
8期
43-47
,共5页
高彦骋%潘聃%赵蕾%苟秦晋
高彥騁%潘聃%趙蕾%茍秦晉
고언빙%반담%조뢰%구진진
配电系统%供电模型%供电能力%N-1原则
配電繫統%供電模型%供電能力%N-1原則
배전계통%공전모형%공전능력%N-1원칙
distribution system%power supply model%power supply capacity%N-1 principle
针对城市中压配电网存在的供电瓶颈以及未考虑多电压等级协同供电不足的问题,构建了配电系统供电能力计算模型,在配电网供电能力计算模型的基础上构建配电网典型供电模型。通过分析主变N-1原则校验及过载主变负荷二次转供过程,得到主变所能提供的最大负荷以及不同典型供电模型下的主变出线数、站间所需联络点数、主变和线路负载率等网络供电能力关键指标,给出了城市中压配电网的最大供电能力,并制定典型供电方案,通过具体技术指标来指导配电网规划建设工作。
針對城市中壓配電網存在的供電瓶頸以及未攷慮多電壓等級協同供電不足的問題,構建瞭配電繫統供電能力計算模型,在配電網供電能力計算模型的基礎上構建配電網典型供電模型。通過分析主變N-1原則校驗及過載主變負荷二次轉供過程,得到主變所能提供的最大負荷以及不同典型供電模型下的主變齣線數、站間所需聯絡點數、主變和線路負載率等網絡供電能力關鍵指標,給齣瞭城市中壓配電網的最大供電能力,併製定典型供電方案,通過具體技術指標來指導配電網規劃建設工作。
침대성시중압배전망존재적공전병경이급미고필다전압등급협동공전불족적문제,구건료배전계통공전능력계산모형,재배전망공전능력계산모형적기출상구건배전망전형공전모형。통과분석주변N-1원칙교험급과재주변부하이차전공과정,득도주변소능제공적최대부하이급불동전형공전모형하적주변출선수、참간소수련락점수、주변화선로부재솔등망락공전능력관건지표,급출료성시중압배전망적최대공전능력,병제정전형공전방안,통과구체기술지표래지도배전망규화건설공작。
In view of the power supply bottleneck and lack of coordination of multiply voltage levels which exist in the urban medium-voltage distribution system,this paper builds a power supply capacity calculation model,and based on the calcula-tion model,a typical power supply model of the distribution system is built. On the basis of a thorough analysis of the main transformer N-1 calibration and the process of the second load transfer when the main transformer is overloaded,the key indexes of the power supply capacity such as the maximum load and the number of the feeders the main transformer can provide,the load rates of the main transformer and line can be obtained so as to provide the maximum load capacity of the urban medium-voltage distribution system. The typical power supply scheme can be thus made to guide the distribution network planning and construction through specific technical indicators.