Graph theory based expert system to form de-icing route in Changsha power grid

作者：Zhong, Tang^*

来源：International Journal of Electrical Power & Energy Systems, 2012, 43(1): 1318-1321.

DOI：10.1016/j.ijepes.2012.03.044

• Short circuit
• De-icing
• Graph theory
• Expert system
• Ice storm

Ice accretion of overhead conductors is a serious problem for power utilities. Among various de-icing approaches, short circuit based de-icing is one of the most frequently used ones. Since the short circuit based de-icing requires cumbersome and tricky operations, and some lines are taken out of service, pre-planned short circuit schemes are usually adopted in order to prevent mis-operation. Whereas, since some transmission lines might be tripped and system topology varies notably during ice storm, fast forming of short circuit de-icing scheme is not a simple task. Based on thorough investigation of pre-established de-icing schemes in Changsha power grid, rules to set up de-icing schemes are concluded. An expert system combining the power of graph theory has been developed in the paper to enumerate all the feasible de-icing routes. Thereafter, short circuit current and de-icing time of each route are calculated to single out candidate routes, and thus, dispatchers can form de-icing scheme at easy.

• 出版日期2012-12
• 单位上海电力大学