How to strengthen the management of power dispatching system

Electric power industry is an important basic industry for national economic and social development. The rapid development of electric power industry strongly supports the development of national economy and society. With the increasing demand for electricity, the technology of power transmission and transformation is also developing and changing. Power grid safety has been paid more and more attention, energy saving and emission reduction have been paid more and more attention, power supply structure has been constantly adjusted, power facilities have been built one after another, old equipment has been constantly updated and transformed, and various new technologies have been widely used. Therefore, how to strengthen power dispatching and management has become a topic of our concern.

In recent years, with the continuous development of science and technology, power dispatching system has become an important modern monitoring, control and management means. And it also plays an irreplaceable role in the process of social development. Therefore, in order to strengthen power dispatching and management, we must first understand its content and function, and put forward corresponding solutions according to its content and function.

Basic contents of power dispatching

gather data

RTU collects the electrical parameters of the station (substation or power plant), including the telemetry data such as switch position, protection signal, voltage and current.

Transfer information

The information collected by RTU is transmitted to the main station system (front-end computer, server) through a reliable channel, and the control command sent by the main station is transmitted to the war end.

data processing

The collected information should be processed, filtered and calculated.

Man-machine contact

The processed information is presented to users through a friendly interface, which realizes the functions of remote control and remote adjustment.

Functions of power dispatching system

Real-time monitoring of voltage quality of power supply system

Real-time monitoring of harmonic voltage components in power grid

On-line monitoring and collection of power supply voltage quality, harmonic voltage components and power outage time of power system are carried out by the hour and time, and relevant operation data are provided to voltage quality management professionals in time and accurately.

In view of the above contents and functions, we also put forward the scientific and technological planning objectives of power dispatching.

Power Grid Operation and Security and Stability Control

1 Implement the national energy policy and the development strategy of power transmission from west to east, make full use of power grid resources and power resources, adapt to the power market environment, and realize the optimal dispatching of power resources in China.

In order to meet the requirements of power grid development, we should reasonably divide the power grid control areas, establish advanced interconnected power grid frequency and tie line control modes, and formulate corresponding laws and regulations.

Improve the level of power grid safety analysis and operation control, and strive to avoid serious accidents such as stable destruction of dispatching responsibility and system collapse in the national 500 kV and 330 kV main systems.

According to the specific situation of the power grid, advanced, safe and reliable safety and stability control devices are configured, and the safety and stability control technology will continue to develop.

Power market operation

Learn and master the operation technology of national, regional and provincial power markets, as well as the operation of tertiary power markets in municipalities directly under the central government.

Research, develop and timely establish a sound technical support system for the commercialization of the power market on the generation side, and realize the functions of quotation processing, transaction planning, security inspection, congestion management, auxiliary services, assessment and settlement, contract management, market forecasting, information release and quotation-assisted decision-making, so as to ensure the fair and orderly operation of the power market on the generation side.

Conduct research on the operation of power transmission market and power sales market.

All dispatching institutions at or above the provincial level that carry out the electricity market should put into operation the technical support system of the electricity market.

Power grid dispatching automation

Improve the interconnection and data exchange of EMS systems of national dispatching, network dispatching and provincial dispatching.

All AGC functions of State Grid are practical, which can meet the requirements of regional power grid interconnection and power market and make the frequency quality reach the international advanced level.

Through the comprehensive application of load forecasting, state estimation, dispatcher power flow, static security analysis and DTS and other application software, network provincial dispatching has developed from empirical dispatching to analytical dispatching and intelligent dispatching.

Make full use of the existing National Power Data Network (SPDEND) of -cnelc, and gradually form a perfect special power dispatching data network for real-time control of dispatching system, connecting dispatching centers at all levels and directly dispatching power plants and substations, perfecting the national first-level network, perfecting the second-level network in all regions, and building a third-level network in 90% provinces. According to the requirements of the national security department, the network must be safely isolated from the external public internet and the internal public power information network to ensure the safety and reliability of the real-time control system.

Continuously improve the dispatching production management system and realize the interconnection of three-level dispatching production management systems: national dispatching, network dispatching and provincial dispatching.

Although the goal is clear, the pilot reform of transmission and distribution separation, which should have been carried out during the Eleventh Five-Year Plan period, has not progressed, and power grid enterprises still have a high monopoly position in the market. After fulfilling their basic social responsibilities, it is their nature as monopoly enterprises to pursue extra profits. Power dispatching institutions affiliated to power grid enterprises consciously or unconsciously become the tools for power grid enterprises to achieve their strategic goals, which makes the role of dispatching deviate from its public management function.

The objective physical law of power system operation requires instantaneous balance between supply and demand. However, due to the constraints of physical characteristics of units, network congestion restrictions, load fluctuations, uncertainty of water regime and other factors, especially unexpected events such as power system failures, the balance between supply and demand will be broken at any time, which may endanger the safe and stable operation of the power system.

take measures

Strengthen leadership, implement the responsibility system, and adhere to the principle of "the first leader stresses the first productive force". Dispatching science and technology development planning at all levels is an important part of power grid science and technology development planning at all levels. Generally, the person in charge of the dispatching center is responsible, and the chief engineer is responsible for organizing the implementation. The application rate of scientific and technological achievements has been included in the assessment scope of establishing a first-class dispatching system, and it is also the assessment content of the leading group of dispatching center.

Increase investment in science and technology, ensure the implementation of the annual cost of science and technology projects, and focus on solving major technical problems that are urgently needed in dispatching production.

Actively promote the localization of power grid dispatching system equipment, introduce and digest international advanced technological innovations, and vigorously advocate the application of technologies and products with independent intellectual property rights that conform to the actual situation of China power grid.

Under the same conditions, domestic equipment and systems are given priority in dispatching system construction projects, supporting national industries, but not protecting backwardness, and promoting industrial technological progress through fair competition.

Establish and improve the technical standard system, actively adopt international standards, absorb foreign advanced standards, establish a perfect standardized application system, and realize the international integration of technical standards of power grid dispatching system.

Strengthen personnel training to ensure that the quality and quantity of professionals meet the needs of safe operation of power grid. Attach great importance to absorbing and mastering high-tech talents, train existing personnel in a planned way, formulate training norms, and put forward staffing and personnel qualification standards for dispatching majors at all levels. Regular training of professionals (including overseas training); Organize technicians to inspect technical measures and management methods in advanced power enterprises (companies) at home and abroad from time to time.

Encourage engineering technology and management innovation, and select and commend "experts with outstanding contributions to the national power grid dispatching system" every two years.

Organize and carry out joint research on technical problems urgently needed to be solved in power grid dispatching system. On the voluntary basis of each unit, the key projects are appropriately divided to ensure timely completion.

Make an annual plan and check it regularly. Combined with the "China Power Grid Dispatching and Operation Conference" held once every two years, the scientific and technological work conference of power grid dispatching system was held to check the completion of the project and discuss new research topics.

The above-mentioned power dispatching related measures are only a small part of the whole measures, and the specific implementation should be analyzed according to the specific situation. Therefore, in order to improve the national economic level, it is particularly important to do a good job in power dispatching. With the development of science and technology and the continuous improvement of economy, we will have better countermeasures for all kinds of things.