本文着重讨论了电力公害的两大问题，即交流装置造成的网侧功率因数低以及投网运行时向电网注入谐波电流，并提出了改善功率因数的措施及网侧电流谐波的抑制技术。%Two problems of electric power disserve are discussed in the paper. That is, Deflector reduces power factor and supply harmonic for power system. The measures of improving power factor and restrain from harmonic current are mentioned.
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