Main Article Content
Due to the extensive use of power electronic equipment, the harmonic content in distribution network is increasing, which poses a threat to the operation of power equipment and the reliability of power system. Power electronic devices are the main harmonic source in the power grid. With the increasing application of power electronic devices, the harmonic pollution in the power grid is becoming more and more serious. Harmonic suppression can improve the safety and reliability of equipment operation, and plays an important role in the safe and economic operation of power system. The optimal configuration of the filter is the optimal solution of the filter installation position, type, parameters and group number under the condition that the harmonic current, power grid results and parameters are known. In order to minimize the investment of the whole network filter, ensure that the total harmonic distortion rate and harmonic voltage content of each node of the network meet the harmonic standard, and make the filter operate safely, this paper gives the optimal configuration in the distribution network and the solution algorithm and mathematical model of active and passive filters. Therefore, it has become an important task to accurately analyze the harmonic distortion rate of distribution network and take corresponding treatment measures. The node admittance matrix of each harmonic of the system is established, and the network inherent structure method is used to determine the optimal location of each harmonic filter in the distribution network. Artificial immune algorithm is used to optimize the filter parameters. The method proposed in this paper can effectively suppress the harmonic voltage distortion of each node in the network, and provides a new application platform for large-scale information sharing and comprehensive research.