With the increasing penetration of renewable energy, active voltage regulation of a distribution network has become an important way to maintain system stability. To study the active voltage regulation method in a current power distribution station area with load diversification, first, the voltage-power regulation characteristics of the motor with different load types and load rates are studied, and the impact of the load conditions on motor power is revealed. This paper proposes a classification method of station area motors based on load type and load rate, and establishes a classification aggregation model of the motors, one which can effectively reduce the complexity of the model. Then, the overall voltage-power regulation characteristics of the distribution station area are studied using the classification aggregation model, considering different load types and proportions such as static, dynamic and power electronic load. Additionally, actual agricultural and commercial industries are analyzed as examples. Finally, the active voltage regulation method in the distribution station area is proposed. Considering situations of both sufficient or insufficient reactive power of the system and main load types in the station area, the voltage is adjusted to minimize the consumption of active or reactive power, realizing the economic operation of the system.