Optimal Installation and System-level Control Strategy of SAPF Based on Extended-range Compensation of Multi-bus Harmonic Sources in Distribution Networks

With the rapid increase of the type and quantity of nonlinear loads in networks, the required amount of shunt active power filters (SAPFs) becomes large. To reduce the maintenance cost of harmonic compensation, the optimal installation and system-level control of SAPF is proposed to achieve the comprehensive harmonic mitigation in a distribution network. Firstly, a SAPF extended-range compensation model is built to evaluate the harmonic compensation distance and harmonic compensation sensitivity of multi-bus harmonic disturbance sources. Then, the optimal installation algorithm and system-level control scheme of SAPF are designed. Finally, the simulation result based on the IEEE 18-bus network with distributed nonlinear loads verifies the effectiveness of the proposed SAPF installation strategy in good harmonic voltage suppression performance and small installation capacity.