农机的无功补偿方式选择及效益分析

Choice and Effect Analysis of Reactive Power Compensation for Agricultural Machinery

农用机械的大量使用容易造成农村电网功率因数偏低,降低供电品质,从而增加了功率损耗和电能损耗。针对这一问题,依据无功补偿原则,采取随机补偿方式,选取适当的补偿容量,合理地选择农机的容量,可以优化农机的无功补偿,提高供电质量,节能降耗,保障农机经济环保的运行。试验结果表明:采用此措施后线损率平均下降了3.55个百分点,节电达3000kW.h。动力客户端的电压可提高20～25V,使原先启动困难的电动机顺利启动,农用水泵出水量也明显增加。

Massive use of agricultural machinery is easy to make the rural grid power factor lower and reduce power supply quality, which would increase the power loss and electrical energy loss. In view of this question, a effective measure is provided in this paper, which can optimize the reactive compensation, improve power supply quality, save energy, and ensure agricultural machinery＇s run economic and environmentally friendly by following electric montor compensation way, selecting suitable compensation capacity and choosing farm machinery power reasonably on the basis of the rule of reactive compensation. Filed test shown that line loss rate drops 3.55 percent equally, electric energy saves 3000kw. h, and the voltage of the power client side enhances 20 - 25 V , which make it is easier to start motor and outlet water also increase obviously after taking the ways.