Retrofit Evaluation Method and Generation System of Power System Relay Protection Devices

Abstract

Disclosed is a modification strategy of an electric power system relay protection device. The modification strategy is characterized in that the modification strategy comprises the following steps: S1, calculating full life cycle cost of the relay protection device, and S2, determining a modification strategy, i.e., obtaining a minimum F(n)=Min(ALCC) of a full life cycle cost annual value of the relay protection device. Disclosed is a generation system of the modification strategy of the electric power system relay protection device. The generation system is characterized in that the generation system comprises a relay protection device modification strategy generation system (a server, a database, safety protection equipment and application software), and the relay protection device modification strategy generation system is connected with inputs of operation mode management database, a medium-term and long-term planning database, an EMS system and an asset management system, and an output of a relay protection modification project and a schedule. The modification strategy and the generation system are advantageous in that (1) modification time is determined according to the minimum annual value of the fill life cycle cost, and loss brought by a fault of the rely protection device is reduced, and (2) the generation system can automatically complete a modification assessment of the relay protection device according to a status of an electric power system and historical information, and the workload of manual assessment is alleviated.

Description

technical field [0001] The invention relates to a transformation evaluation method of a relay protection device in a power system. The present invention also relates to a generation system of the method for evaluating the transformation of a relay protection device. Background technique [0002] Acronyms and key term definitions [0003] Relay protection device: When the power components (such as generators, circuits, etc.) An automated measure and device in which a circuit breaker issues a trip command to terminate the development of these events. [0004] The first line of defense of the power system: In order to ensure the normal operation of the power system and the safety requirements when it withstands a single fault (a fault with a high probability of occurrence), it consists of primary system facilities, relay protection, and preventive control for safety and stability. [0005] Any equipment has a life cycle. After the equipment reaches the service life, the prob...

AI Technical Summary

Problems solved by technology

[0012] (1) Starting from the characteristics of the electronic system itself, the whole life cycle model of the electronic system is established, without considering the application place of the electronic system, that is, the application environment;

[0013] (2) Starting from the characteristics of the electronic system itself, without considering the cost of the consequences of system failure or defect;

[0018] This utility model focuses on the information collection and system design of managed equipment, and does not propose a specific method for how to manage the entire life cycle

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