At present, the key technology of intelligent high-voltage switchgear has many advantages, but there are still some problems in practical application. Combined with the actual application of high-voltage switchgear products in the current smart substation, the following main problems are summarized:

(1) The complex network structure increases equipment investment and reduces reliability.

(2) too many electronic devices with a single function are installed in the body of the intelligent switching equipment, and the connections between the sensors, the body of the mechanism and the transformer are complicated and error-prone, and will cause problems such as the shortage of wiring space;

(3) Condition monitoring technology can not fully meet the requirements of condition maintenance and optimized operation. At present, the extracted parameters can only represent the operating characteristics of the circuit breaker from a macro perspective, and can not judge the specific fault cause. The development trend of the operating state can only be judged by experience, which is not conducive to state maintenance. In addition, due to the complex structure of high-voltage switchgear, a large number of components and strong sealing, it is difficult to obtain signals that can reflect the status characteristics. The signals monitored by most systems are still limited to the monitoring of some signals of some key components, and the parameters extracted by these signals can only reflect the working conditions of some components or limited status characteristics. The real-time mechanical status of the equipment can not be fully displayed, which is not conducive to the status assessment and fault diagnosis of high voltage switchgear.

Several functions that need to be implemented

On the basis of the development of intelligent high voltage switchgear technology, intelligent high voltage switchgear will continue to carry out more technical innovations, and the following functions will be realized in the future:

(1) Build a comprehensive analysis platform with powerful data processing capabilities and extensible functions centered on the status of the switchgear body, which can realize the comprehensive monitoring, evaluation, diagnosis and operation trend of the switchgear;

(2) The operating status data of the switchgear has perfect centralized management function and partial sharing function, which can realize multi-dimensional and all-round information display and interactive platform such as multi-point monitoring, remote diagnosis and expert meeting of the switchgear;

(3) Comprehensive analysis and diagnosis ability based on multi-combination of original switchgear ontology data, potential information mining and secondary information reprocessing;