Abstract:This paper focuses on the problem about high proportion of distributed power consumption, the purpose is that the test bench was established to improve the comprehensive utilization efficiency of energy. The test bench which is on combined cooling heating and power for active distribution network system is based on the demonstration project of Active Distribution Network in Guizhou. The same time, the corresponding model was established, and Field tests were carried out in the demonstration project. The test results show that the comprehensive energy utilization efficiency of the combined cooling heating and power in the demonstration project can reach more than 90% under the condition of 90% rated power, which is significantly higher than that of the traditional combined cooling heating and power. Moreover, the system can realize that the power of the grid can be adjusted within a certain range under the same heat (cold) load. In the demonstration project, the reduction of natural gas price and the increase of feed-in tariff are the basis to ensure the economic operation of combined cooling heating and power supply for the active distribution network. For the users with high electricity cost and heating and cooling demand, combined cooling heating and power supply system has better economy.