Brief introduction of the dispatching system of th

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Introduction to power dispatching system

the power law of the people's Republic of China stipulates that power operation implements unified dispatching and hierarchical management; The regulations on the administration of power dispatching clearly stipulates that the dispatching agencies are divided into five levels, namely, national dispatching agencies, trans provincial, autonomous region and municipality dispatching agencies, provincial, autonomous region and municipality dispatching agencies, provincial municipal dispatching agencies and county-level dispatching agencies. At present, China has established a relatively complete five-level dispatching system, namely, the national power dispatching communication center, referred to as the national dispatching; Northeast, North China, East China, central China, northwest and South Power Dispatching and communication centers, referred to as dispatching; Power dispatching and communication center of power companies of all provinces (municipalities directly under the central government and autonomous regions), hereinafter referred to as provincial dispatching; There are also 270 prefectural and more than 2000 county-level surveys. Dispatching agencies at all levels dispatch electricity within their respective dispatching jurisdiction, rely on law, economy, technology and necessary administrative means to command and ensure the safe and stable economic operation of electricity, and safeguard national security and the interests of all stakeholders

the power law stipulates that power production and operation should follow the principles of safety, high quality and economy. Therefore, the primary task of power dispatching is to ensure the safe, stable and normal operation of electricity and the safe and reliable power supply to power users. Therefore, the dispatching organization should formulate safety measures to deal with accidents through a large amount of calculation and analysis in advance, and install safety automatic devices and relay protection equipment. Do a good job in accident prediction and handling plan to prevent accidents. Once there is an electrical fault, the dispatcher should quickly and accurately control the fault range according to the actual electrical situation and with reference to the treatment plan. 1. Generally, the stroke of the electro-hydraulic servo experimental machine is not large, so as to ensure the normal operation of the electricity and avoid the impact on the power supply of power users; In case of a serious accident, in order to ensure the main safety and the normal power supply of most users, the dispatcher will take emergency measures according to the specific situation, change the operation mode of the power generation and transmission system, or temporarily interrupt the power supply to some users. After the fault is eliminated, the dispatcher should quickly and orderly restore the power supply as soon as possible to minimize the power outage time of users

Another important task of

dispatching is to ensure the power quality and keep the frequency, voltage and waveform qualified. This proves that elasticity has been consumed and the instantaneous balance between power generation and consumption must be maintained at all times. Because electric energy is not easy to be stored in large quantities, and users' electricity consumption is random, in order to maintain the balance between supply and demand at all times, it is required that the dispatcher must predict the social electricity demand in advance, and carry out the power and electricity balance in advance, prepare the dispatching plan for different periods of time, and uniformly arrange the maintenance and standby of power facilities. In the actual operation process, on the one hand, dispatching should rely on the advanced dispatching automation communication system to closely monitor the operating conditions and electrical safety level of power plants and substations, quickly deal with a large amount of operating information that changes at any time, and correctly issue dispatching instructions; On the other hand, the power generation output should be adjusted in real time to track the load change, so as to meet the current power demand

dispatching also needs to comprehensively consider the national energy policy and environmental protection policy, as well as power distribution, load demand, electrical structure, flood control, environmental protection and other factors, and reasonably arrange power generation according to the principles of fairness and justice, so as to realize the optimal utilization of power generation resources, so as to improve the utilization efficiency of national power sources

the national power dispatching and communication center is the highest level organization in the power dispatching system, which is directly led by the State Power Corporation. It is responsible for the management of the national power dispatching, undertakes the professional management functions of the national power dispatching automation and power dedicated communication system, and directly dispatches the cross regional power connection lines, and has won the excellent awards of technical standards for many times. At present, the state dispatching directly manages the Genan DC transmission system and Yangcheng Power Generation and transmission system

with the construction of the Three Gorges power transmission and transformation system, the implementation of the 10million kW power transmission project to Guangdong, the development of large-capacity hydropower and large-scale thermal power units in the southwest and the upper and middle reaches of the Yellow River, and the construction of the "west to East power transmission" project, the pattern of the national power grid will be gradually formed during the "Tenth Five Year Plan", and a long-distance, large-capacity national interconnected power that realizes the west to East power transmission and North-South complementarity will appear in front of the world

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