Programmable state sequence dynamic generation system of direct current tester

Abstract

The invention discloses a programmable state sequence dynamic generation system of a direct current tester, which comprises an interactive layer, a control layer and an output layer, wherein, the interactive layer enters the requirements of a tester, and an N-S drawing entering and a fault model library entering mode are provided; the control layer comprises a timing control module which is used for controlling the execution order, a logic control module which is used for condition judgment and number hopping, and a state input module which comprises a field bus input and a switch quantity input, and the state input module is used for editing a logical condition expression; the output layer is used for selecting the execution state according to the control layer and outputting a corresponding switch amount, a digital quantity or an analog quantity. According to the invention, the state sequence is dynamically generated according to the input switch quantity and the field bus input, andthe test requirement of a direct current control and protection equipment is met.

Description

technical field [0001] The invention relates to a dynamic generation system for a programmable state sequence of a direct current tester, which belongs to the technical field of direct current transmission equipment detection. Background technique [0002] The UHV DC transmission project is being vigorously developed and constructed in my country and overseas. The voltage level is continuously increased from 500kV to 800kV, and then to 1100kV, and the transmission power is also increasing. [0003] The DC protection system is the safety guard of the UHV DC transmission system. It monitors the operating status parameters of the converter, DC pole line and neutral line, DC filter and other equipment and areas in real time, and quickly protects the electrical equipment and DC lines in the converter station from damage. Damaged by electrical faults plays an important role in the safe and stable operation of the entire DC transmission system. [0004] At present, the test of the...

AI Technical Summary

Problems solved by technology

[0004] At present, the test of the DC protection system is mainly to carry out the centralized joint debugging test in the factory before leaving the factory. Since the DC control system and the DC protection system need to cooperate with each other and have a high degree of coupling, the real-time digital simulation system is used for the centralized joint debugging of the DC control system. And the overall function test of the DC protection system, the test system and equipment are huge and complex, and the state sequence can only be generated sequentially, which is difficult to meet the test requirements

The commissioning and operation and maintenance stages of the project site lack effective test techniques and means. Generally, the manufacturer's technicians can only force the number to be set in the commissioning software of the DC control and protection device, or modify the software logic to simulate the protection action condition. Check the correctness of the exit circuit

Images