Online Monitoring of High-Voltage Circuit Breaker Opening Times
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Solution Overview
Problem
Current systems for monitoring the opening and closing times of high-voltage circuit breakers in power systems are limited by the addition of multiple sensors and electronic devices, leading to low accuracy and increased maintenance costs, and fail to meet the requirements of practicality and engineering applications.
Innovation Solution
An apparatus and method that utilize existing measurement and control systems, relay protection apparatus, and fault recording systems to monitor opening and closing times without adding sensors or intelligent electronic devices, using big data, cloud computing, and artificial intelligence to derive accurate data for online monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple sensors and intelligent electronic devices are added to monitor opening and closing times, then measurement precision is improved, but device complexity increases and maintenance costs increase
Solution Approach 1:
The patent makes existing multi-functional devices (measurement and control systems, relay protection apparatus, fault recording systems) perform the additional function of opening and closing time monitoring. These systems already exist in the circuit breaker and perform other monitoring functions, so adding the time monitoring capability does not increase device complexity but rather utilizes existing resources.
Solution Approach 2:
The existing measurement and control systems, relay protection apparatus, and fault recording systems automatically provide the time data needed for opening and closing time monitoring without requiring separate dedicated monitoring devices. The systems serve themselves by utilizing their own operational data for the additional monitoring function.
2Measurement precision
If multiple sensors and intelligent electronic devices are added to monitor opening and closing times, then measurement precision is improved, but maintenance costs increase
Solution Approach 1:
By making existing devices perform multiple functions including time monitoring, the patent eliminates the need for separate dedicated monitoring devices that would require separate maintenance. The existing systems already have maintenance protocols in place, so adding the time monitoring function does not increase maintenance workload or costs.
Solution Approach 2:
The existing measurement and control systems, relay protection apparatus, and fault recording systems automatically provide the time data needed for opening and closing time monitoring without requiring separate dedicated monitoring devices. The systems serve themselves by utilizing their own operational data for the additional monitoring function, thereby eliminating the need for additional maintenance of separate monitoring devices.
3Extent of automation
If derivation of monitoring circuit from opening and closing circuits is performed, then online monitoring capability is improved, but reliability deteriorates
Solution Approach 1:
The patent uses the existing measurement and control systems, relay protection apparatus, and fault recording systems as intermediaries to obtain time data. These systems already exist in the circuit breaker and perform other monitoring functions, so utilizing them for time monitoring does not require deriving new monitoring circuits from the opening and closing circuits, thereby maintaining reliability while achieving online monitoring capability.
4Extent of automation
If additional sensors and electronic devices are installed, then online monitoring capability is improved, but production and operation costs increase
Solution Approach 1:
The patent makes existing multi-functional devices (measurement and control systems, relay protection apparatus, fault recording systems) perform the additional function of opening and closing time monitoring. These systems already exist in the circuit breaker and perform other monitoring functions, so adding the time monitoring capability does not increase device complexity but rather utilizes existing resources.
Solution Approach 2:
The existing measurement and control systems, relay protection apparatus, and fault recording systems automatically provide the time data needed for opening and closing time monitoring without requiring separate dedicated monitoring devices. The systems serve themselves by utilizing their own operational data for the additional monitoring function, thereby eliminating the need for additional maintenance of separate monitoring devices.
Data Source
AI summary
Provided are a high-voltage circuit breaker opening and closing time online monitoring apparatus, a smart multi-dimensional big data analyzing expert system for a high-voltage circuit breaker in a power grid, and methods therefor. The opening and closing time online monitoring apparatus includes a circuit breaker opening and closing events database, a circuit breaker opening and closing time online monitoring module, and a human machine interaction interface. Data in the circuit breaker opening and closing events database is derived from a SCADA and a measurement and control apparatus thereof, a circuit breaker phase selection opening and closing apparatus, a relay protection apparatus and a relay protection information system, and a fault recording apparatus and a fault recording system of each of a substation and a converter station. The circuit breaker opening and closing time online monitoring module includes various modules, and cloud databases for such online monitoring are created.