The State "Electric power System Reform Plan" has clarified the overall direction of the electric power market reform, and proposed to build an electric power market system under the supervision of the government, which is separated from enterprises, fair competition, open and orderly, and healthy development. This will certainly promote the reform of market-oriented operation of power dispatching, greatly enrich the connotation of power dispatching, make it better command and coordinate the operation of power grid, maintain the balance of power supply and demand, and ensure the safe and economic operation of power grid.
Under the new situation, the energy structure changes, and electricity becomes the carrier of terminal energy consumption. The operation index, working connotation and dispatching means of electric power dispatching should also adapt to the demand of new situation. In the operation of power dispatching, the operation of power grid should be monitored from the overall view, and all policies and measures of economic dispatching should be implemented according to the principle of energy-saving economic dispatching, so that the power of new energy and high-efficiency energy-saving generator sets can be consumed online first, and the development of new energy industry can be promoted.
Power dispatching is the operation command center of the power grid. It is imperative to improve the dispatching automation level with scientific and technological progress, better monitor the operation of the power grid, ensure the safe and stable operation of the power grid and orderly trial operation of the power market, and assume social responsibilities. Strictly implement "three public service" dispatching, information disclosure system, safeguard the rights and interests of power generation side and power customers. At the same time, according to the power supply and demand status and the power grid load curve, real-time, flexible and accurate load adjustment instructions, so as to achieve power balance, narrow the gap between peak and valley load, improve the power grid load rate, reduce the loss of the network, to achieve safe and economic operation of the power grid.
First, rely on scientific and technological progress to improve the level of dispatching automation
Refers to the electric power dispatching automation system to a global view of the whole power grid operation state for testing and control, it can use the remote communication network to collect grid running state of real-time information, safety analysis and evaluation, and through the scheduling system for load regulation, to ensure the safe and stable operation of power grid, improve power grid operation of the economy.
In order to adapt to the changing demand of energy structure under the new situation, power dispatching should be driven by technological progress, and the application of new technology of dispatching system should be strengthened to improve the automation level of dispatching system. Thus in the interconnection operation, relay protection, power communication, power market support system and other aspects of the advanced level, to ensure the safety of the operation of the dispatching system, to achieve economic operation of the power grid.
It is also an important measure to serve the safe operation of power grid to establish and perfect the technical supervision system of power grid relay protection, to perfect the microcomputer type relay protection device, to realize the standardization of setting calculation of power grid protection and to improve the management level of power grid relay protection. Available for this purpose, the electric power dispatching network technology from the accident data and relay protection action information, as well as the grid fault wave record remote transmission information, the comprehensive analysis of real-time data by computer, make rapid accurate grasp of the power grid failure condition, thus can real-time processing instructions, to facilitate a timely manner, resume normal power supply.
In the field of power communication, it is necessary to perfect the design and optimal configuration of power communication network, and make power communication have independent data network to ensure the safety of power communication system operation. In addition, reactive voltage control software should be used to realize the real-time optimal control of the operating voltage of the whole network and ensure the reasonable distribution of reactive power flow. Reduce reactive power loss, ensure the quality of operating voltage, so that the power grid in economic operation.
Implement the "three public" dispatching to ensure the orderly operation of the electricity market
Power dispatching shall strictly implement a fair, just and open dispatching and information disclosure system, further strengthen the coordination between network and plant, and safeguard the rights and interests of power generation side and power customers. "Three fairs" comprehensive requirements of the operation of the normalization of grid scheduling is reflect net factory separately under the condition of power grid operation and scheduling characteristics, closely integrated to the complicated situation of power supply, to better provide service platform for electric power marketing operation, ensure smooth supply of electric power security, so as to create a more harmonious power operating environment. By improving the "three public" dispatching mechanism, standardizing the "three public" dispatching method and implementing the "three public" dispatching measures, the electric power dispatching becomes the command center of the power grid operation and better serves the operation of the electric power market.
The implementation of "three-public service" dispatching should adapt to the demand of energy structure change from the overall view, and make limited arrangement for the consumption of new energy and electricity online. Through innovative dispatching methods, hydropower, thermal and electricity can be used together to improve the utilization rate of energy and create better power generation efficiency with the same amount of energy. To implement the "three-public service" dispatching measures, the rights and interests of power generation and customers should be protected equally and sincerely to ensure that electricity can be delivered, received and used. At the same time, it is necessary to do load forecasting, optimize generation planning and power demand side management. Use the advantage of large power grid to meet the demand of cross-regional power exchange and achieve the maximum range of power allocation and accident support. Inter-regional power allocation based on the principle of equal, voluntary and paid market transactions will not only help solve the problem of surplus and shortage of electricity in the power grid, but also promote the development of the new energy industry and contribute to energy conservation and emission reduction.
Third, innovate power dispatching to improve energy efficiency
Under the new situation of changing energy structure, electric power becomes the carrier of terminal energy consumption. According to the principle of energy-saving and economic dispatching, the power dispatching method should be innovated to adapt to the changing demand of energy structure and promote the development of new energy industry. The innovation of power dispatching lies in improving energy efficiency and implementing all policies and measures for energy saving dispatching. Let clean energy power and energy saving and efficient thermal power units limited power access to absorb, realize the utilization hours of low energy consumption generator set and high energy consumption generator set wide gap, conducive to promoting energy conservation and emission reduction.
In economic dispatching, it will also face the challenges brought by hydropower and wind power during the period of large power generation. Power dispatching should give full play to the advantages of large power grid, tap the potential of power transaction, meet the demand of diversified market and improve energy efficiency.
In the wet season, the inflow of water from the reservoir area increases obviously, and the electric quantity presents seasonal characteristics. To this end, we should give priority to the use of precious water resources, try to use hydropower plants to adjust the peak power, so that hydropower is reduced abandoned and increased. Dispatching should make full use of the regional linkage electricity trading market platform to carry out flexible emergency electricity trading, meet the needs of trans-regional hydropower delivery in the first time, achieve cross-basin compensation and regulation of hydropower, and promote the absorption of underestimated electricity, realize the friendly interaction between power supply and power grid, and effectively improve water energy utilization efficiency.
With the orderly development and construction of wind power, in addition to improving the construction of wind power distribution supporting projects, a series of problems such as wind power grid connection, control, prediction and energy storage should be studied and scientific and technological breakthroughs should be made before wind power grid connection. At the same time, we should optimize the scheduling to ensure that the wind power is fully consumed online, so that it can embark on the road of green, circular and low-carbon development.
Power dispatching shall meet the demand of electricity market
To carry out the market-oriented operation of electric power dispatching, we should strengthen the market consciousness with the scientific development concept, innovate dispatching methods and adapt to the demand of electricity market. On the premise of ensuring the safe operation of power grid, according to the power supply and demand situation, the characteristics of power load and the law of load change, the real-time and flexible load regulation can not only meet the demand of electricity market, but also achieve the balance of power consumption, improve the load rate and improve the utilization rate of power resources.
In order to meet the demand of electricity market, we must adhere to the unified dispatching of power grid. At the same time, it is necessary to establish an inseparable whole between power grid operation and dispatching room, so as to facilitate the effective operation of electricity market. In the dispatching operation, it is still necessary to strengthen the monitoring of electricity load, and deeply understand the characteristics of electricity load and the law of load change. According to the collection of customer electricity information and data, as well as peak-valley load gap, it is convenient to implement the load adjustment measures of "shifting peak and filling valley". At the same time, it also provides a basis for the development and utilization of off-peak power, which can not only improve the load rate of the power grid, but also achieve the balance of power consumption to reduce the loss of the network.
In addition, the power dispatching should also take the initiative to cooperate with various functional departments, including power grid transformation, line equipment maintenance, industry expansion project, substation maintenance and other related power outages into the dispatching plan. Minimize repeated power outages and reduce the scope and frequency of power outages. Temporary maintenance is arranged in the trough period as far as possible, and the implementation of "zero shortage" to meet the demand of electricity market.
Under the mechanism of market economy, it is necessary to strengthen the quality and skill training of dispatching personnel, enhance the ability to control modern power grid, and strive to explore the dispatching connotation of market operation, innovate dispatching methods, and adapt to the demand of electricity market. At the same time, measures such as peak shifting, peak avoidance, peak adjustment and inter-regional power allocation should be taken to meet the market demand for electricity and achieve better benefits in the market operation of electricity resources. Construct harmonious electric power, benefit one party common people.
V. Concluding remarks
It is an overall and strategic measure to construct a market-based power dispatch mechanism to realize optimal power allocation. Relying on scientific and technological progress, power dispatching is built into power grid operation command center to meet the needs of power market operation.
In the context of changes in the energy structure, it is even more necessary to strictly implement the dispatching of official vehicles, official vehicles and official vehicles, fully implement the policies of energy-saving and economic dispatching, and make limited arrangements for the consumption of new energy and energy efficient units to meet the demand for electricity load and promote the development of the new energy industry.
