The national power system reform plan defines the overall direction of power market-oriented reform and proposes to build a power market system with separation of government and enterprises, fair competition, openness, order and healthy development under government supervision. This will also 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 between power supply and demand, and ensure the safe and economic operation of power grid.

Under the new situation, the energy structure has changed, and electric power has become the carrier of terminal energy consumption. The operation index, work connotation and dispatching means of power dispatching should also meet the needs of the new situation. In the operation of power dispatching, the operation status of power grid should be monitored from the overall perspective, and various policies and measures of economic dispatching should be implemented according to the principle of energy-saving economic dispatching, so as to give priority to the online consumption of power of new energy and energy-saving generator units and promote the development of new energy industry.

Power dispatching is the operation command center of power grid. It is incumbent on us to take social responsibility to improve the level of dispatching automation with scientific and technological progress, better monitor the operation of power grid, and ensure the safe and stable operation of power grid and the orderly trial operation of power market. Strictly implement the "three public" dispatching and information disclosure system, and safeguard the rights and interests of power generation side and power customers. At the same time, according to the power supply and demand situation and the power grid load curve, the load regulation command should be issued in real time, flexibly and accurately, so as to achieve power balance, narrow the peak valley load gap, improve the power grid load rate, reduce the network loss, and realize the safe and economic operation of the power grid.

1、Improve dispatching automation level by relying on scientific and technological progress

Power dispatching automation system refers to the detection and control of the operation status of the whole power grid from a global perspective. It can use the remote communication network to collect the real-time information of power grid operation for security analysis and state evaluation, and regulate the load through the dispatching system to ensure the safe and stable operation of power grid and improve the economy of power grid operation.

In order to meet the needs of the change of energy structure under the new situation, power dispatching should take technological progress as the driving force, increase the application of new technologies in dispatching system and improve the automation level of dispatching system. Thus, it is at an advanced level in interconnection operation, relay protection, power communication and power market support system, so as to ensure the safety of dispatching system operation and realize the economic operation of power grid.

Establish and improve the technical supervision system of power grid relay protection, improve the microcomputer relay protection device, realize the standardization of relay protection setting calculation, and improve the management level of relay protection, which is also an important measure to serve the safe operation of power grid. Therefore, power dispatching can make use of the accident data and relay protection action information transmitted by network technology, as well as the remote transmission information of power grid fault recording. Through the comprehensive analysis of real-time data by computer, it can quickly and accurately grasp the power grid fault situation, so it can send processing instructions in real time, which is convenient for troubleshooting in time and restoring normal power supply.

In the field of power communication, it is necessary to improve 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. In addition, the reactive power and 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 at one time, ensure the quality of operating voltage, and make the power grid operate economically.

2、Implement "three public" dispatching to ensure the orderly operation of power market

Power dispatching shall strictly implement the fair, just and open dispatching and information disclosure system, further strengthen the coordination between grid and plant, and safeguard the rights and interests of power generation side and power customers. "Three public" dispatching is a comprehensive requirement for the normal operation of power grid, which reflects the characteristics of power grid operation and dispatching under the condition of separation of power grid and plant. It is necessary to closely combine the complex and changeable situation of power supply, better provide a service platform for power market-oriented operation, ensure safe and stable power supply, and create a more harmonious power operation environment. By improving the "three public" dispatching mechanism, standardizing the "three public" dispatching methods and implementing the "three public" dispatching measures, power dispatching will become the command center of power grid operation and better serve the operation of power marketization.

The implementation of "three public" dispatching should adapt to the needs of changes in energy structure from a global perspective, and make limited arrangements for the online consumption of new energy power. Through innovative dispatching methods, realize the mutual assistance of hydropower and thermal power, improve the utilization rate of energy, and create better power generation benefits with the same amount of energy. To implement the "three public" dispatching measures, we should sincerely safeguard the rights and interests of power generation and customers without discrimination, so as to ensure that power can be delivered, received and used. At the same time, we should also do a good job in load forecasting, optimize power generation planning and arrangement, and power demand side management. Use the advantages of large power grid to meet the needs of cross regional power exchange and realize large-scale power allocation and accident support. According to the principle of equal, voluntary and paid market transaction, cross regional adjustment of power will not only help solve the contradiction between surplus and shortage of power in the power grid, but also promote the development of new energy industry and help save energy and reduce emissions.

3、Innovating power dispatching and improving energy efficiency

Under the new situation of changing energy structure, power has become the carrier of terminal energy consumption. According to the principle of energy-saving and economic dispatching, power dispatching should innovate power dispatching methods, adapt to the needs of changes in energy structure and promote the development of new energy industry. Innovative power dispatching depends on improving energy efficiency and comprehensively implementing various policies and measures for energy-saving dispatching. Let clean energy power and energy-saving thermal power units be limited on-line consumption, and realize the utilization hours of low-energy generating units and high-energy generating units, which will greatly open the gap, which is conducive to promoting energy conservation and emission reduction.

In economic dispatching, it will also face the challenges brought to the power grid operation in the period of large-scale hydropower and wind power generation. Power dispatching should give full play to the advantages of large power grid, tap the power trading potential, meet the power demand of diversified market and improve energy efficiency.

In the rainy season and wet season, the water inflow from the reservoir area increases significantly, and the power consumption presents seasonal characteristics. Therefore, we should give priority to the use of valuable hydraulic resources, make full use of the power peak regulation of hydropower plants, and reduce the abandonment and increase the issuance of hydropower. The dispatching shall make full use of the power trading market platform of regional linkage to carry out flexible emergency power trading. The time can meet the cross regional transmission of hydropower, achieve the cross basin compensation and regulation of hydropower, promote the underestimation of power consumption, realize the friendly interaction between power supply and power grid, and effectively improve the efficiency of water energy utilization.

With the orderly development and construction of wind power, in addition to improving the construction of wind power transmission supporting projects, a series of problems such as wind power grid connection, control, prediction and energy storage should be studied and tackled before wind power grid connection. At the same time, we should optimize the dispatching to ensure the comprehensive online consumption of wind power and make it embark on the road of green, circular and low-carbon development.

4、Power dispatching should adapt to the demand of power market

To implement the market-oriented operation of power dispatching, we should use the scientific outlook on development to strengthen market awareness, innovate dispatching methods and meet the needs of the power market. On the premise of ensuring the safe operation of the power grid, real-time and flexible load regulation can not only meet the demand of the power market, but also achieve balanced power consumption, and improve the utilization rate of power resources while improving the load rate.

In order to meet the demand of power market, we must adhere to the unified dispatching of power grid. At the same time, it is necessary to establish the integral relationship between power grid operation and dispatching room, which is conducive to the effective operation of power market. In the dispatching operation, it is still necessary to strengthen the monitoring of power load and deeply understand the power load characteristics and load change law of customers. According to the collected information and data of customers' electricity consumption and the load gap between peak and valley, it is convenient to implement the load regulation measures of "shifting peak and filling valley". At the same time, it also provides a basis for the development and utilization of low valley power, which can not only improve the load rate of power grid, but also achieve balanced power consumption and reduce network loss.

In addition, power dispatching should actively cooperate with various functional departments to include the power outages involved in power grid transformation, line equipment maintenance, industrial expansion project, substation maintenance, etc. into the dispatching plan. Greatly reduce repeated power outages and reduce the scope and frequency of power outages. The temporary maintenance shall be arranged in the trough period as far as possible, and the "zero point defect elimination" shall be implemented to meet the needs of the power market.

Under the mechanism of market economy, we must strengthen the quality and skill training of dispatching personnel, improve the ability to control modern power grid, strive to explore the dispatching connotation of market-oriented operation, innovate dispatching methods and meet the needs of power market. At the same time, measures such as peak staggering, peak avoidance, peak regulation and cross regional power allocation should be taken to meet the market demand for electricity, so as to achieve better benefits in the market-oriented operation of power resources. Build a harmonious electric power to benefit the people of one party.

5、Concluding remarks

Building a market-oriented power dispatching mechanism is an overall and strategic measure to realize the optimal allocation of power. Rely on scientific and technological progress to build power dispatching into power grid operation command center to meet the operation needs of power market.

Under the changing situation of energy structure, it is more necessary to strictly implement the "three public" dispatching, fully implement various policies of energy-saving economic dispatching, and make limited arrangements for the online consumption of new energy and energy-saving units, so as to meet the demand of power load and promote the development of new energy industry.