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华中电网的水电比重较大,约占全网容量的40%以上。枯水季节和丰水季节出力相差300多万千瓦。当用电负荷不能随季节出力变化而相应调整时,往往会造成电网低周波运行。电网低周波运行,不仅严重影响电网本身的设备安全运行,而且会对用户的电力设备和产品质量带来很大的危害。华中电网局为了改善电网运行状况采取了下列措施:
The proportion of hydropower in Huazhong Power Grid is relatively large, accounting for more than 40% of the total network capacity. The difference between the dry season and the flood season is more than 3 million kilowatts. When the power load can’t be adjusted accordingly with the change of the output in the season, it will often cause low-frequency operation of the power grid. The low-frequency operation of the power grid not only seriously affects the safe operation of the power grid itself, but also brings great harm to the user’s power equipment and product quality. In order to improve the operation of the power grid, the Central China Power Grid Bureau has adopted the following measures: