Simulation platform system and method of hydraulic operating mechanism for ultra-high-voltage circuit breaker

Abstract

The invention relates to a simulation platform system and method of a hydraulic operating mechanism for an ultra-high-voltage circuit breaker. An energy storage system, a control valve system, a hydraulic cylinder and buffering system and a pipeline system are adopted in the method. The energy storage system comprises an initial parameter calculating module, an energy accumulator building module and a charging device submodule. The control valve system comprises an electromagnetic pilot operated valve, an amplifying valve and a main valve submodule. The hydraulic cylinder and buffering system comprises a differential type hydraulic cylinder and a cylinder buffering parameterized model submodule. A pipeline subsystem comprises an on-way pressure loss model and a local pressure loss model submodule. By means of theoretical modeling and parameter determining, the four systems are introduced into a simulation model building and calculating system, and the calculation result is output through a result output system. The simulation platform system and method can carry out computer analog simulation and accurate evaluation on the comprehensive characteristics of the hydraulic operating mechanism for the ultra-high-voltage circuit breaker, the product design period is shortened, the test cost is reduced, and the blindness of a test is avoided.

Description

technical field [0001] The invention relates to a modeling and simulation method of a complex high-power hydraulic operating system, in particular to a simulation platform system and method of a hydraulic operating mechanism for an extra-high voltage circuit breaker. Background technique [0002] UHV circuit breakers are the most important protection and control equipment in UHV transmission lines. They can control the operation and withdrawal of grid lines and quickly cut off faulty lines. They are an important guarantee for my country to "develop UHV transmission and build a strong and intelligent power grid". When the UHV circuit breaker is running, the current cut off is as high as tens of thousands of amperes, and the required operating power is large. It must be equipped with an efficient, high-power, and highly controllable operating mechanism. [0003] The operating mechanism for circuit breaker can be divided into manual operating mechanism, electromagnetic operatin...

AI Technical Summary

Problems solved by technology

[0005] Since the UHV circuit breaker has the characteristics of instantaneous burst of high power and high-speed response during operation, the hydraulic operating mechanism equipped with it is complex and compact in structure and has many parts. Some problems will inevitably occur during operation, such as severe vibration of parts and huge noise. , the buffer pressure of the hydraulic cylinder is too high, the pressure fluctuation of the pipeline system is serious, etc. These problems and faults are often interrelated and affect each other. At the same time, they cannot be predicted and evaluated during product design. The "improvement-retest" method is time-consuming, laborious, costly, and blind. At the same time, many factors cannot be directly measured in the test and test process, and it is difficult to find the root of the problem. Therefore, it is necessary to find a scientific, efficient, and practical design method

Images