Interconnected power grid electromechanical disturbance propagation control method based on thunder and lightning tracking

Abstract

The invention discloses an interconnected power grid electromechanical disturbance propagation control method based on thunder and lightning tracking, and the method comprises the steps: carrying out the thunder and lightning tracking and thunder and lightning prediction of two interconnected power grid regions based on thunder and lightning detection and thunder and lightning prediction technologies; control strategies of SMES controllers on the two sides of the interconnected power grid are adjusted in advance according to the prediction result; the SMES controller on the power grid side of the non-lightning-stroke area adopts a disturbance zero-transmission control strategy based on disturbance propagation characteristics to isolate disturbance propagation of the interconnected power grid, and disturbance propagation to the power grid of the non-lightning-stroke area is inhibited; the lightning stroke area power grid side SMES controller adopts a disturbance calming strategy based on a transient energy function method to accelerate attenuation of transient energy of a fault area power grid, and disturbance calming control is achieved. According to the method, disturbance can be inhibited from spreading to a non-lightning-stroke regional power grid, rapid smoothing of the disturbance is realized, and safe and stable operation of the whole interconnected power grid is ensured.

Description

technical field [0001] The invention belongs to the technical field of interconnection grid security, and relates to a method for controlling the transmission of electromechanical disturbances in an interconnection grid based on lightning tracking. Background technique [0002] With the continuous expansion of the scale of the power grid, the connection between the regional power grids is getting closer. In order to obtain greater economic benefits and promote the rational use of energy, the interconnection between the regional power grids has become an inevitable trend. As a complex dynamic system with high dimensionality, strong nonlinearity and hierarchical distribution, the regionally interconnected large power grid is always under the action of various random disturbances. Along with the development of the power system, lightning has always been a major natural factor that endangers the safety of the power grid and causes partial or large-scale power outages. [0003] ...

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Problems solved by technology

[0005] At present, the method of using energy storage devices to improve the stability of the power system starts from the perspective of enhancing the damping of the entire system. After a lightning strike occurs in a certain area of ​​the power grid, the power and frequency of ...

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