Method and device for controlling supply and demand balance of power grid according to different layers and regions

Abstract

The invention provides a method and device for controlling the supply and demand balance of a power grid according to different layers and regions. The method comprises the steps of determining the power shortage and the load operating state; calculating the load reduction potential of resources at the demand side according to a load electric power model and the load operating state; distributingreduction tasks layer by layer according to the estimated load reduction potential; adjusting corresponding load operating parameters according to the distributed reduction task amount; and checking the actual reduction effect of the power grid. The device comprises a data acquisition unit, a scheduling unit, a strategy making unit, a checking unit and an integrator. The technical scheme providedby the invention implements a comprehensive control strategy from microscopic to macroscopic according to load control demands among different layers and different regions, and ensures the effectiveness and rationality of the resources at the demand side in participating in supply and demand balance adjustment of the power grid.

Description

technical field [0001] The invention relates to the application technical field of supply and demand balance control, in particular to a method and a control device for supply and demand balance control in hierarchical and partitioned power grids. Background technique [0002] Electricity is a special form of energy with real-time supply and demand balance characteristics. If the power imbalance between the power generation side and the power consumption side will lead to system frequency instability, it will not only seriously affect power indicators such as voltage and current, but even cause the grid system to collapse. In order to reduce the loss caused by the unbalanced supply and demand of the power system, the power balance is usually adjusted based on the output of the generator set to match the demand on the power consumption side. Frequent changes of equipment may have a huge impact on equipment life and operating costs. [0003] With the intelligent development o...

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Problems solved by technology

At present, electricity demand response, which has been widely studied in existing technologies, is a typical method of demand-side resource management. However, in the traditional demand response mode based on price or incentives, the user response cycle is long, and response plans need to be formulated in advance. Moreover, the subjectivity of users is also greatly affected, so it is more suitable for long-term system planning; and in the grid environment with the rapid development of DC transmission technology and the expansion of power load, timely and effective methods are needed to regulate demand-side resources to meet supply and demand When the balance threatens the security of the system, the rapid and coordinated action of the resources on the demand side

[0004] At present, the realization of the application of demand-side resources in the field of supply-demand balance is still mainly to formulate regulation principles from the perspective of the impact of electricity prices and incentives on users. The hierarchical and regional considerations of user distribution have been considered in

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