Generator, transmission line and machine network early warning and pre-control method and system

Abstract

The present invention relates to power generators, a power transmission line and generator unit-grid early warning and early control method and system, particularly, a method for accurately calculating and controlling the dynamic reserve power of the power generators or the power transmission line and a generator unit and grid coordination early warning and early control system for safe and stable operation. The method and system can guide a duty worker in a power plant or a substation to coordinate onto a stronger power grid for the stable operation of the power generators or the power transmission line and to early warn a hidden unstable operation state. The dynamic reserve power of the power generators or the power transmission line is calculated in real time; a generator unit and grid coordination PQ curve range is calculated; and the power plant or the substation is guided to make adjustments safely and stably. Therefore, all automatic stable adjustment devices in the substation are ensured to have in real time an enough accident reserve adjustment space and effective thermal standby, so that an accurate adjustment can be carried out in a system disturbance state, and a failure due to lack of the adjustment space, or protection maloperation or secondary disturbance caused by an over adjustment can be avoided; and the accident reserve power of the whole substation can be ensured to have real-time high performance and realize real-time maximization, and co-management of a generator unit -grid coordination safe and stable operation mechanism by the substation and scheduling can be realized.

Description

technical field [0001] The invention relates to the safe and stable operation pre-warning and pre-control of electric systems in power plants and substations. Specifically, it involves an accurate calculation and control method of reserve power of generators and transmission lines, and an early warning and pre-control system for coordinated safe and stable operation of machines and networks. Background technique [0002] In the operation of the power system, operators need to constantly monitor and analyze the operating conditions of the power plant and the power system, and manually or automatically adjust the system and the active and reactive power distribution of the power plant to maintain the system frequency and voltage within the allowable range and ensure the maximum guarantee The system and synchronous generator run stably, and in the abnormal state of the system, it can visually monitor and analyze the disturbance state of the system or generator, analyze the dist...

AI Technical Summary

Problems solved by technology

Although the above-mentioned relevant models can visually display the operating status of generators and electrical systems, and can visually display the disturbance status of electrical systems and generators, they do not yet have the ability to accurately calculate the accident reserve capacity of generators or electrical systems, and guide the field to the power grid. Strong and stable direction adjustment ability

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