A Research on Test Platform of Energy-Saving and Loss-Reducing Experiment for Distribution Network

[摘要] Based on the study of quantitative energy consumption reduction model, a test platform was established to test and verify the theoretical method. In the experiment, a power supply device with different power quality disturbances is required. This paper proposes a series multi-objective VQDG which can generate typical voltage disturbance, such as flicker, sag or swell, harmonics, unbalance and their superimposition applied to testing load. In the application, the cascade H-bridges inverter is seriesly connected between the gird source and the testing load. The device has two advantages: the output disturbance voltage level is low and the power absorbed by load is mostly provided by grid. Compared with those devices with high power rating, the size of the capacitor of VQDG will be decreased remarkably. The device is designed and physical tests are performed to demonstrate the variety of functions. Therefore, it can provide the power quality disturbance signal for the simulation experiment platform of energy saving and loss reduction of distribution network.

[发布机构] China Electric Power Research Institute, Haidian District, Beijing; 100192, China^1;State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Changping District, Beijing; 102206, China^2

[效力级别] 电工学

[关键词] Cascade H bridges;Energy saving and loss reducing;Experiment platforms;Output disturbance;Power quality disturbances;Power supply devices;Theoretical methods;Voltage disturbances