Circuit Breaker Release Control for Fast ESS Fault Isolation
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Solution Overview
Problem
Existing systems face challenges in promptly and effectively disconnecting circuit breakers in energy storage systems and power grids to mitigate fault spread and improve stability and reliability.
Innovation Solution
An apparatus with a control circuit that includes a switch module and a release mechanism, allowing the circuit breaker module to be controlled between on and off states, utilizing electromagnetic mechanisms and controllers to timely disconnect the circuit breaker in response to fault detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a circuit breaker is connected between the energy storage system and the power grid to quickly eliminate faults, then the reliability of the power grid is improved, but the complexity of the control system increases
Solution Approach 1:
The control system is segmented into multiple independent functional modules: a first controller for detecting faults and generating control signals, a second controller for receiving signals and controlling the release mechanism, and a release mechanism for actuating the circuit breaker. This modular segmentation allows each component to perform its function independently, improving reliability while keeping individual module complexities manageable.
Solution Approach 2:
The control circuit is pre-configured with the release mechanism connected to the circuit breaker's operating mechanism before faults occur. The first controller is pre-programmed with fault detection algorithms and control logic. When a fault occurs, the pre-configured system can immediately execute the disconnection sequence without requiring complex real-time decision-making, thus improving reliability while minimizing the complexity of real-time control.
2Stability of the object's composition
If the circuit breaker is disconnected timely to reduce fault spread, then the stability of the energy storage system is improved, but the response time of the control system becomes critical
Solution Approach 1:
The control circuit and release mechanism are pre-connected and pre-configured before faults occur. The first controller contains pre-programmed fault detection criteria and control logic. When a fault condition is detected, the system can immediately execute the disconnection sequence without delays for complex real-time processing, thereby reducing response time while maintaining system stability.
Solution Approach 2:
The manual or mechanically-based circuit breaker operation is replaced with an electrically-controlled release mechanism actuated by controllers. This substitution enables faster response times through electronic fault detection and signal transmission, allowing timely disconnection to maintain energy storage system stability while reducing the critical response time requirement through automated control.
3Ease of operation
If remote opening operation of the circuit breaker is implemented through the control circuit, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The control system is designed to automatically detect faults and execute the circuit breaker opening operation without requiring manual intervention. The first controller continuously monitors system conditions, automatically identifies fault conditions based on pre-programmed criteria, and triggers the release mechanism to open the circuit breaker. This self-service capability improves ease of operation while the automated logic keeps the control circuit complexity manageable.
Solution Approach 2:
Manual mechanical operation of the circuit breaker is replaced with an electrically-controlled release mechanism. The control circuit provides remote opening capability through electrical signals from the controllers, eliminating the need for physical presence at the circuit breaker location. This substitution improves ease of operation while the use of standard electrical control components keeps the added complexity relatively low.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables timely disconnection of the circuit breaker module, reducing fault spread and improving the convenience of opening, thereby enhancing the stability and reliability of energy storage and power systems.
Implementation Method 1
a first circuit, the first circuit including a coil of a first electromagnetic mechanism and a switch module which are connected in series
Implementation Method 2
a second circuit, the second circuit including a contact of the first electromagnetic mechanism and a coil of a second electromagnetic mechanism which are connected in series
Data Source
AI summary
A circuit breaker module is connected between the energy storage system and a power system, when a working state of the circuit breaker module is an on state, a path for transmitting electric energy between the energy storage system and the power system is in an on state, and when the working state of the circuit breaker module is an off state, the path for transmitting electric energy between the energy storage system and the power system is in an off state. The apparatus includes a control circuit, the control circuit includes a switch module and a release, and the control circuit is configured to drive the circuit breaker module to change from the on state to the off state through the release when a state of the switch module changes.