论文部分内容阅读
大庆油田每年用电量相当于全国用电量的 1 % ,在机械采油中 ,如果使配电线路网损降低一个百分点 ,每年就可节约电费 2 980万元。在杏五注变电所安装补偿电容器后 ,功率因数由原来的 0 51提高到 0 90 5,电网的网损率由原来的 6 85%下降到 4 4 % ,年节电 4 8 8× 1 0 4kW·h。加装高转差或超高转差电机可使电机与抽油机的配合得到改善 ,减少抽油机的内应力损耗 ,可解决电机和变压器“大马拉小车”问题。经比较 ,永磁同步电机价格虽高 ,但无论高压、低压均无需补偿 ,节能效果最好。
Daqing Oilfield annual electricity consumption is equivalent to 1% of the national electricity consumption, mechanical oil production, if the distribution network loss by one percentage point lower annual electricity savings of 29.8 million yuan. After the compensation capacitor was installed in Xingu injection substation, the power factor increased from 0 51 to 0 905, and the network loss rate dropped from 6 85% to 44%. The annual power saving was 488 × 1 0 4kW · h. The installation of high slip or ultra-high slip motor can be improved with the motor with the pumping unit to reduce the internal stress pumping unit loss, to solve the motor and transformer “big car” problem. By comparison, although the price of permanent magnet synchronous motor high, but no matter high pressure, low pressure without compensation, the best energy-saving effect.