Security domain-based safe optimization and control method for electric power thermal stability

Abstract

The invention discloses a security domain-based safe optimization and control method for electric power thermal stability. The method comprises the following steps: N-1 faults that may occur in a power grid are analyzed and determined according to power grid parameters and a power grid structure, hyperplane coefficients corresponding to all lines are obtained, transmission power of all the lines in an electric power system is calculated via an initial operating point of the electric power system and the hyperplane coefficients, whether the transmission power of all the lines exceeds limitation values therefor can be determined, whether the initial operating point is an instability operation point can be determined thereby, lines with transmission power exceeding the limitation values are screened out, overload rates of overload lines are calculated, a line with a largest overload rate is screened and corresponding hyperplane coefficients are obtained, a minimum electricity generation adjustment amount of the instability operating point is calculated, a stable operation point can be obtained if all adjusted lines are not longer overloaded, otherwise the adjusted operation point of the electric power system is subjected to load shedding operation. Via the method, operation workers of the electric power system can be guided to effectively control thermal instability running states of the electric power system.

Description

technical field [0001] The invention belongs to the field of network analysis and relates to the field of power system control. Background technique [0002] The rapid development of the economy has led to an increasing demand for electricity, and the scale of the power network has continued to expand, gradually forming cross-regional interconnection and even transnational interconnection grids. At present, my country has formed a pattern of interconnection of power grids in all regions except Taiwan. The European power grid plans to further strengthen the construction of the main grid structure in the next ten years to realize the interconnection with the adjacent power grids in the south and east. At the same time, due to the unbalanced distribution of primary energy and economic development areas, the load center is far away from the power center, so a large amount of electricity needs to be transmitted through the grid for long distances. The transmission power of the i...

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Problems solved by technology

[0005] Although a lot of research has been carried out around the security domain and a lot of practical results have been obtained, the application of the security domain in the field of coordinated control of thermal stability is less, and there is no coordinated control of thermal stability of the power system using the security domain. Aspect Theory and Algorithms

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