State Grid Fujian Electric Power promotes cross-county distribution network cluster dispatching

"There are currently two grid maintenance tasks, zero grid operation risks, and zero equipment defects..." On March 16, the duty personnel of the Distribution Control Center of Mingxi County Power Supply Company in Fujian Province completed the distribution control duty work in Ninghua, Qingliu and Mingxi counties in a clustered operation mode of county-level distribution network dispatching, and took over the online shift with Qingliu County Power Supply Company through a video call. This is due to the implementation of a clustered operation mode of county-level distribution network dispatching by the Power Control Center of State Grid Fujian Electric Power Co., Ltd. during the epidemic prevention and control period.

In order to achieve the "double safety" goals of epidemic prevention and control and power grid operation, the Fujian Electric Power Control Center fully utilized the county distribution network dispatching cluster operation mode piloted in 2019, and adopted a group working method of "zoning deployment, centralized dispatching, city-county mutual backup, and county-county mutual backup" to carry out distribution network dispatching duty with a minimum number of personnel to reduce personnel contact during the epidemic prevention and control period.

The clustered operation mode of county distribution network dispatching is based on distribution network information integration and automation technology. Within the same prefecture-level city, a distribution network automation system information sharing mechanism is established, and cross-county management authority is set for distribution network dispatchers to achieve monitoring, dispatching, management, and remote control of distribution network equipment in the entire region; through a networked model, cross-county distribution network operation and maintenance and emergency repair tasks can be issued.

"The distribution network control center of the county-level power supply company is mainly responsible for the control and operation of the 35 kV distribution network. Under the normal working mode, we adopt the 'four shifts and two turns' mode for 24-hour duty, and each shift is equipped with three duty personnel. During the epidemic prevention and control period, we implemented the county-level distribution network dispatching cluster operation mode. Three county power supply companies formed a distribution network dispatching cluster. On a rotating basis, the duty personnel of the distribution network control center of one of the county power supply companies were responsible for the distribution network dispatching work of the three counties, which can reduce the duty of distribution network dispatching personnel by about 50%. "Chen Yuxing, director of the Equipment Monitoring and Management Department of the Fujian Electric Power Control Center, introduced. The county-level distribution network dispatching cluster is formed into "small county + small county + small county" and "large county + small county" distribution network dispatching clusters according to the scale and business volume of the distribution network, and "zoning and centralized dispatching" are carried out to ensure that personnel in the business cluster do not gather, personnel who make video calls for handovers do not contact each other, and personnel on duty are not mixed, so as to ensure both epidemic prevention and power supply.

In addition, State Grid Fujian Power has further optimized the use of human resources through distribution network cluster dispatching, organized distribution network dispatching personnel to carry out low-voltage dispatching monitoring, protection, automation professional work and related analysis and management work, and solved problems such as weak professional management of county-level distribution network dispatching.

In the next step, the Fujian Electric Power Control Center will comprehensively promote the clustered operation mode of distribution network dispatching, explore the establishment of a large distribution and dispatching command system of "one region, one distribution and dispatching", form a new distribution network control level with the distribution network control center of the municipal power supply company headquarters as the command hub and various sub-centers under it, establish the chief dispatcher responsibility system, form a cluster operation mode of unified command and dispatch of the distribution network dispatching business of each sub-center, realize the support and deployment of remote distribution network operation and maintenance, and emergency repair business, improve the distribution network dispatching operation efficiency, and enhance the power supply service level.