Under the construction of intelligent power grid unified big background, howdoes vacuum circuit breaker as one of the core part of transmission anddistribution equipments meet the demand of informatization, digitization andautomation of intelligent grid. It becomes hot issue that the researchinstitutions and manufacturers are concern about.
From the user's futuredemand point of view, the intelligent vacuum circuit breaker should have notonly general function, but also should have a perception function, criticalthinking function and executive function. That means it not only have toaccurately to get a lot of sensitive information from surroundings to get themanalyzed, processed, send out performed orders and monitor, but also have tofeedback and operate the results from analysis and operation.
For the aboverequirements, intelligent vacuum circuit breaker has three technical problemsneed to be broken through.
The first technique problem is to realize thefunction of perception . This is the foundation of intelligence, the realizationof the function must rely on modern sensor technology to get information such asvoltage, current, insulation (PD), distance, speed, temperature, etc. Theinformation will be converted into various signal that can be identified andprocessed by excellent and reliable sensor which surely have small volume, beconvenient to be installed and can adapt to the working environment of circuitbreakers .And the signal can accurately, reliably and sensitively reflect thechange of information.
The second technical problem is to realize thefunction of thought and judgment. It is the core of intelligence, therealization of the function must rely on modern electronic technology, computertechnology and communication technology.
The third technical problem is torealize the function of executive function. It must operate reliably follow theinstructions of the controller, complete the close and open of circuit breakerto realize the executive function.
The realization of perception function andthe thinking judgment function is the technical difficulty ofR&D ofintelligent vacuum circuit breaker that need expending huge effort to break out.Now many products has unveiled that the breakthrough of the key technology willbe available soon.