Virtual Grid Load Testing via Adaptive Control
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Solution Overview
Problem
The safety measures for load shedding tests in large-scale power systems are complex, making it difficult for users to perform load shedding without stopping production activities and ensuring safe operation, especially for dispersedly distributed interruptible loads.
Innovation Solution
A grid load interactive control method and terminal based on adaptive load characteristics, which includes receiving test presetting messages, building virtual test environments, sending instruction responses, executing power restoring controls, and using GOOSE communication for load control, allowing for online, batch, and safe testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional load shedding test methods are used, then load shedding control can be implemented, but safety measures become complex and users must stop production activities
Solution Approach 1:
The patent creates a virtual copy of the power grid system including virtual power plants, virtual loads, and virtual energy storage devices. This virtual environment replicates real grid conditions allowing load shedding tests to be conducted without affecting actual production activities, thus resolving the contradiction between test reliability and operational convenience
Solution Approach 2:
The virtual power grid acts as an intermediary between the control system and actual physical loads. It mediates the load shedding process by simulating load conditions in a virtual environment, eliminating the need to physically disconnect real loads during testing while maintaining test validity
2Reliability
If door-to-door safety measures are implemented at terminal side, then test safety is improved, but workload increases significantly
Solution Approach 1:
The patent merges all terminal-side safety measures into a centralized virtual environment. Instead of implementing separate safety protocols at each terminal, the virtual power grid consolidates all safety functions in one location, dramatically reducing preparation time while maintaining comprehensive safety coverage
Solution Approach 2:
The virtual power grid is pre-configured with all necessary safety measures, protection mechanisms, and control protocols before testing begins. This preliminary setup eliminates the need for time-consuming door-to-door safety implementations during actual testing operations
3Reliability
If master station safety measures are enhanced, then control safety is improved, but system complexity increases
Solution Approach 1:
The patent copies the master station's control functions into the virtual environment, creating a virtual master station that handles all control operations. This separates control safety requirements from the physical master station, reducing system complexity while maintaining enhanced safety through the virtual replication of control mechanisms
Data Source
AI summary
The provided materials are a grid load interactive control method and terminal based on adaptive load characteristics and a storage medium. The method includes: receiving a test presetting message sent by a master station and sending message reply information to the master station; parsing the test presetting message to obtain a test presetting instruction; building a test environment and generating a virtual action exit in the test environment when the test presetting instruction generates a record; and sending instruction response including the record to the master station so as to cause the master station to determine whether a test is successful according to the record.