一、前言“九五”以来,山东省的电力事业取得了长足发展。截至2005年底,全省发电装机总容量3742万千瓦,220千伏及以上变电容量55649兆伏安,山东电网已经成为以500千伏和220千伏输电线路为混合主网架、500千伏系统实现环网运行的现代化大电网。为了打破垄断、引入竞争、促进电力 I. INTRODUCTION Since the Ninth Five-Year Plan, the power industry in Shandong Province has made great strides. As of the end of 2005, the province’s total installed capacity of 37.42 million kilowatts of power generation, 220 kV and above variable capacity 55649 MVA, Shandong Power Grid has become a 500 kV and 220 kV transmission lines as the main grid hybrid, 500 kV The system realizes the operation of the ring network of modern large power grid. In order to break the monopoly, introduce competition and promote electricity