多年来,城市电网投入了大量的资金进行改造,基本上以绝缘化、电缆化、增大导线截面、网络化为主要内容,这些改造对配电网产生了重大影响,供电能力大大增强,供电可靠性提高,结构更加坚强,同时带来了一些新的问题,对这些问题进行梳理总结和提炼并采取相应的对策,有助于更好地指导今后的城网改造和安全生产工作。 Over the years, large amounts of capital have been invested in urban power grids for transformation. Basically, they have been insulated, cabled, and enlarged in conductor cross-section and networked. These changes have had a significant impact on the distribution network and have greatly enhanced power supply capability. Reliability, structural stronger, and brought some new problems at the same time to sort out and refine these problems and take appropriate measures to help better guide the future urban network transformation and safety in production.