分布式电源接入配电网不平衡负荷数据修正系统

Data correction system for unbalanced load data of distributed power connecting to distribution network

配电网内部负荷不平衡对电力系统电能质量造成了严重的消极影响,在修正过程中容易产生大量能耗。为解决上述问题,设计了分布式电源接入配电网不平衡负荷数据修正系统,通过多数字信号处理器与复杂可编程逻辑器构成系统的硬件部分,设计分布式电源接入配电网不平衡负荷数据检测程序以及分布式电源接入配电网不平衡负荷数据修正程序,实现系统的软件运行,通过补偿配电网的谐波电流以及无功电流完成数据修正。实验结果表明,分布式电源接入配电网不平衡负荷数据修正系统能够有效提高电流稳定性,将电流不平衡度降低到5%,同时修正过程中造成的能耗较少。

The internal load imbalance of distribution network has a serious negative impact on the power quality of power system,and it is easy to produce a lot of energy consumption in the correction process.In order to solve the above problems,the unbalanced load data correction system of distributed generation access to distribution network is designed.The hardware part of the system is composed of multiple digital signal processors and complex programmable logic devices.The unbalanced load data detection program of distributed generation access to distribution network and the unbalanced load data correction program of distributed generation access to distribution network are designed to realize the software operation of the system.The data correction is completed by compensating the harmonic current and reactive current of the distribution network.The experimental results show that the distributed generation connected to the unbalanced load data correction system of distribution network can effectively improve the current stability,reduce the current imbalance to 5%,and reduce the energy consumption in the correction process.