Abstract: The traditional active distribution network location and capacity determination ignores the multienergy

complementary coordination characteristics of the energy system，which led to high cost. Therefore，an

active distribution network location and capacity determination method based on energy interconnection was

proposed. On the basis of energy interconnection，the objective function was established，and the whole life cycle

cost theory was used to comprehensively consider the equipment purchase cost，installation cost，operation and

maintenance cost，system operation cost and salvage value recovery. Taking the distribution network location and

capacity determination comprehensive cost in the form of probability as the objective function，the necessary

constraint models were constructed，including equipment configuration capacity constraint，system power supply

reliability constraint，power balance constraint and equipment operation constraint. On this basis，the improved

artificial fish swarm algorithm was used to solve the location and capacity determination algorithm. The simulation

results show that the cost of the location and capacity determination of the active distribution network with

distributed power is lower than that without distributed power. The total cost of network loss and reactive power

compensation calculated by the improved artificial fish swarm algorithm is lower. Compared with other methods，the method proposed has lower loss cost and reactive power compensation cost. It shows that the proposed method can reduce the cost of active distribution network location and capacity determination，and the practical effect is better.

      Key words: energy interconnection；active distribution network；location and capacity determination；artificial

fish swarm algorithm；distributed generation；power