低压配电网三相负荷不平衡危害及防治措施

Discussion on Harm of Three-phase Load Imbalance in Low Voltage Distribution Network and Preventive Measures

针对低压配电网三相负荷不平衡问题,分析了低压配电网三相负荷不平衡产生的机理以及带来的危害,并提出了合理分配用电负荷、错峰用电、增大横截面、使用智能换相开关和自动调节负荷装置等防治措施。实际应用表明,采取的防治措施达到了预期效果,确保了低压配电网三相供电质量。

Aiming at the unbalance of three-phase load in low-voltage distribution network, the mechanism of three-phase load unbalance in low-voltage distribution network and its harm were discussed. The prevention and cure measures such as reasonable distribution of power load, staggered peak power consumption, enlargement of cross section, intelligent commutation switch and automatic load adjustment device were put forward. The practical application shows that the preventive measures have achieved the expected effect and ensure the quality of three-phase power supply in low-voltage distribution network.