【摘要】 针对2008年我国南部地区大范围冰灾对电网正常供电的影响,研究了通过调整运行方式达到输电线路融冰的可行性。通过调整湖南、江西电网的运行方式,对其电厂出线、主要输电断面和负荷中心线路进行过电流融冰可行性分析,结果表明,接入220 kV电压等级的电厂出线部分实施过电流融冰可行,负荷中心环网不具备过电流融冰的可行性,负荷馈线和省内主要断面实施过电流融冰的可行性很小。文中还探讨了短路电流融冰方案的适用范围。更多还原

【Abstract】 According to the impact of wide-range icing disaster in southern area of China on normal power supply,the feasibility of ice-melting of transmission lines by adjusting operation mode is researched.By means of adjusting operation modes of Hunan and Jiangxi provincial power grids,the feasibility of overcurrent ice-melting for power plant outlets,main tie-lines and transmission lines in load centers are analyzed.Analysis results show that it is possible for power plant outlets connected to 220 kV power network possess the feasibility of ice-melting by overcurrent,however,the ring-network located in load centers does not possess such a feasibility.There is very little feasibility for feeders and main tie-lines within provincial networks to adopting overcurrent ice-melting method.In this paper,the application scope of ice-melting of tranmission lines by short-circuit current is discussed.更多还原