在交流电网中，常常采用移相电容器补偿无功功率损耗的方法来提高网络的功率因数。
In ac power network, the way of phase-shifting capacitors to compensate reactive power loss is always adopted to raise network power factor.
合理选择变压器的容量可以降低变压器的有功功率损耗和无功功率损耗，提高电力系统运行的经济性。
Rational chosen transformer capacitor can cut active power loss and reactive power loss down. So, it can improve power system economical operation.
只有做到合理补偿无功功率，才能有效地维持和稳定系统电压水平，从而降低有功损耗，提高系统供电效率。
Compensating reactive power reasonably can keep system's stable voltage level effectively, so reduces the active loss, improves system's efficiency of power supply.
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