In general, the electrical design drawings are marked with the total capacity of the compensation cabinet. If the electrical design drawings are not marked with the compensation capacity, the complete sets of plants can choose the capacity of the reactive power compensation cabinet according to the transformer capacity of 20% ~ 40%. Reactive power compensation cabinet compensation type of choice is the most important part of the selection of correct or not directly affect the efficiency and reliability of the compensation cabinet. The key type of compensation type is based on the degree of harmonic pollution in the system. As the nonlinear load in the distribution system is more and more used, the harmonic pollution problem is becoming more and more serious, and the reactive power compensation capacitor is distributed Harmonics will not only cause the capacitor to overload, reduce the value of the value, shorten the service life, but also may cause the power grid resonance, serious electrical accidents, in addition, the correct type of compensation will be selected. Resulting in harmonic amplification, and further intensify the harmonic pollution of the distribution network. Therefore, the correct reactive power compensation type must be selected according to the degree of harmonic pollution. And according to different operating environment to choose a different hybrid compensation mode: SVG + TSC, APF + TSC and so on. The following is a description of the combined model:
