At present

such distribution energy as PV generation equipment and wind turbines which are connecting to the distribution grid side can only support one-way-flow of energy. And at the background that the single operation mode cannot meet the continuously improved penetrance of the distribution energy

it cannot meet the economic requirement of power quality control and system operation by the system. In order to suit the reactive power optimization control of the distribution energy connecting in to the distribution network system in large scale

the proposal of upgrading the conventional distribution network into the active one is adopted to monitor actively the distribution energy

charging and adjustable load etc. In this paper

the reactive power monitoring function of the active distribution network based on the communication protocol IEC 61850 which has layer structure and self-description ability is set up

including MMS monitoring network service model and GOOSE controlling network service model etc. The setup of the reactive power monitoring system

the modeling of equipment

information exchange and project configuration based on IEC 61850 are achieved.