Whole-plant five-prevention system for thermal power plant

Abstract

The invention relates to the field of power plant anti-error systems, in particular to a whole-plant five-prevention system for a thermal power plant. The whole-plant five-prevention system comprises a five-prevention host machine, wherein the five-prevention host machine is connected with a network card 1, a network card 2 and a network card 3; the network card 1 is connected with an optical transmitter and receiver through a reticle; the network card 2 is connected with a physical insulator through a reticle; a network card 3 bag is connected with an SIS (Strategic Information System) core switch through a reticle; the physical insulator is connected with an NCS (Networked Control System) station dead level switch and an NCS operator station in sequence through reticles; the optical transmitter and receiver is connected with a five-prevention light-prevention switch through an optical fiber; the five-prevention light-prevention switch is connected with a coal delivery sub-station, a dust-removing sub-station, a desulfurization sub-station and a chemical sub-station respectively through optical fibers, and the sub-stations are connected with computer unlocking keys; an alarm system comprises a temperature sensor; and the temperature sensor is connected with a buzzer through a microcomputer. The system is simple in structure, works very stably, and is easy and convenient to operate.

Description

technical field [0001] The invention belongs to the field of error prevention systems for power plants, and in particular relates to a five-prevention system for the whole plant of a thermal power plant. Background technique [0002] The realization of the electrical "five defenses" function has become one of the important measures for the safe production of electric power. With the continuous development of the power grid and the continuous updating of technology, the anti-malfunction device has been continuously improved and perfected. The construction principle of the anti-misoperation system is: all high-voltage electrical equipment that may cause misoperation should be equipped with anti-misoperation devices and corresponding anti-misoperation electrical locking circuits. In order to prevent electrical misoperation, build a line of defense with technical measures between people and equipment, and adopt different technical measures from the perspective of preventing err...

AI Technical Summary

Problems solved by technology

For a long time, the microcomputer electrical five-proof system of the thermal power plant has not covered the factory electrical equipment other than the step-up station. The reason is not only the lack of attention, but also the technical difficulty in implementing it. Authorization Announcement The invention patent No. CN201320212270.X, through the above structure, adopts special power-saving equipment and positioning device, which can prevent fire, water, lightning, snow and small animals, and can also remotely summarize and monitor information. However, This kind of system cannot cover the electrical equipment of the whole factory in a large range, the system structure is relatively complicated, the working light truck is unstable, and the operation is relatively complicated

Images