It leads the power generation, transmission, transformation, distribution and power supply departments in the power system, and continuously provides users with high-quality electric energy according to the requirements of safe and economic operation; When an accident occurs, take measures to quickly eliminate the accident and resume normal operation in time.
Power system dispatching is a complex system, which is provided by many power plants and provides power to users through transmission, substation, distribution and power supply networks. Its production, supply and sales processes are simultaneously completed and balanced in an instant.
Therefore, its scheduling task is different from the general industrial production scheduling. Power system dispatching should keep the balance between power generation and load at any time, and every department within the jurisdiction of dispatching is required to complete dispatching tasks strictly according to quality and quantity.
Extended data:
A, scheduling management content
1, forecasting power load:
According to the historical record of load change, weather forecast, electricity production and the analysis of people's life law, the whole system load is predicted for the next 24 or 48 hours, the expected load curve is compiled, and the corresponding power generation capacity (including standby capacity) is equipped.
2, make power generation tasks, operation mode and operation plan:
According to the predicted load curve and the principle of economic dispatch, reasonably plan and arrange hydropower and fuel, allocate power generation tasks of each power plant (including load distribution of hydropower stations and thermal power plants), and put forward daily power generation plans of each power plant.
Specify the FM power plant and FM capacity, arrange the start-stop and standby of generator sets, and approve the maintenance plan of power generation, transmission and substation equipment in the system; Unified setting and assessment of system relay protection and safety automatic device, power flow and stability calculation of the system, and reasonable arrangement of operation mode.
3. Conduct safety monitoring and safety analysis:
Collect the main operation information of the whole system, monitor the operation situation and ensure the normal safe and economic operation. Through safety analysis (using application technologies such as state estimation and real-time power flow calculation), accident prediction and anti-accident measures are put forward to prevent accidents before they happen.
4, command operation and handling accidents:
Command and supervise the important operation of the factories, stations and networks under their jurisdiction. When a systematic accident occurs, take effective measures to deal with it in time and quickly restore the normal operation of the system.
Second, hierarchical control.
With the help of modern computer technology and communication technology, the hierarchical management of power system dispatching is realized. Based on the application of modern microelectronics technology, computer technology, communication technology and control theory, the scope is divided according to dispatching hierarchical management.
Realize the information collection and exchange, safety monitoring and economic operation of power system, and ensure the automatic coordination of control functions at all levels. Auxiliary dispatcher directs the production and operation of power system.
Third, hierarchical scheduling.
Power system dispatching management mode is a system for scientific management of large power systems. With the continuous expansion of power system, power systems among cities, regions and countries are interconnected.
Make the power system dispatching develop from the first level to the second, third or fourth level, and be responsible for the whole system or local system dispatching respectively, so as to realize a unified and coordinated management system and give full play to the advantages of large power systems.
Baidu Encyclopedia-Power System Dispatching