Power supply is related to all aspects of working in the oilfield production and living, a slogan called "electric power is the guarantee of oilfield production". So, the power supply is very importance for oilfield production. The pumping unit and the electric pump machine are more used in old oilfield, so, stable and reliable power supply is the key factor to ensure the oil production. As a result, it has important significance to optimize the management of power grid and ensure the reliability of power supply.%电力供应关系着油田作业区生产生活的方方面面，有句口号叫做“夺油上产，电力先行”，可见电力供应对油田生产的重要性。对于使用抽油机和电泵机较多的老油田，稳定可靠的电力供应更是保证原油产量的关键因素。所以，优化电网管理，保证供电的可靠性有着至关重要的意义。
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