Dynamic Protection Zone Selection in Multiple Busbar Arrangements
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Solution Overview
Problem
Existing methods for dynamic protection zone selection in multiple busbar arrangements are complex and computationally intensive, requiring efficient and simple algorithms to accurately and quickly determine protection zones in power systems.
Innovation Solution
A method that involves receiving connection data, determining pairs of connected busbar zones, comparing these connections to assign common zones to protection zones, and defining unconnected zones as separate protection zones, utilizing set theoretical operations and matrix representations to reduce computational power and operational steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If graph theory is used to represent power system bus arrangement for protection zone selection, then protection zones can be readily changed to accommodate configuration changes, but the system becomes quite complex
Solution Approach 1:
The patent segments the protection zone selection process into distinct operational steps: receiving connection data, determining pairs of connected busbar zones, comparing connection data, assigning protection zones, and defining unconnected zones. This stepwise segmentation simplifies the overall complex task while maintaining adaptability to configuration changes.
Solution Approach 2:
The patent implements dynamic protection zone selection where the system automatically adapts to changing busbar configurations by processing real-time connection data. The method dynamically determines which busbar zones are connected and assigns protection zones accordingly, allowing the system to respond to operational changes without manual reconfiguration.
2Measurement precision
If complex algorithms are used for dynamic protection zone selection, then accurate zone selection is achieved, but computational power requirements increase
Solution Approach 1:
The patent applies partial action by focusing computational efforts only on the necessary comparisons and assignments required for protection zone selection. Rather than performing exhaustive graph theory calculations, the method selectively processes connection data to determine pairs of connected busbar zones and assigns protection zones only where needed, reducing overall computational power consumption while maintaining accuracy.
3Reliability
If more operational steps are executed for protection zone selection, then accurate fault isolation is achieved, but the time required for zone determination increases
Solution Approach 1:
The patent performs preliminary actions by pre-establishing the framework for protection zone selection through systematic data reception and connection determination. The method prepares the system by organizing connection data and identifying connected busbar zone pairs before actual fault conditions occur, enabling faster response when faults are detected while ensuring reliable fault isolation through proper protection zone assignment.
Data Source
AI summary
The present disclosure relates to a method of protection zone selection in a multiple busbar arrangement (11), the multiple busbar arrangement comprising busbar zones (ZA1, ZB1, ZC1, ZA2, ZB2, ZC2) and bays (FB-1, BC-1, BS, BC-2, FB-2) connectable to the busbar zones (ZA1, ZB1, ZC1, ZA2, ZB2, ZC2), which bays (FB-1, BC-1, BS, BC-2, FB-2) comprise measurement transformers (CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8). The method comprises the steps of: receiving first connection data comprising information of an operational status of measurement transformer to busbar zone connections; determining all pairs of connected busbar zone to busbar zone connections based on the first connection data; comparing data representing pairs of busbar zone to busbar zone connections, based on the comparing; assigning each pair of busbar zones which has a busbar zone in common with at least another pair of busbar zone to busbar zone connection to a respective protection zone; and defining any busbar zone that is not connected to any other busbar zone as a protection zone. The present invention also relates to a computer program product and a device for carrying out the method.