Line Differential Relay Testing With Cloud-Synchronized Remote Control
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Solution Overview
Problem
Traditional end-to-end line differential testing for transmission line protection is limited by the need for physical presence at both ends, requiring two skilled engineers and being prone to operational errors due to unsynchronized test systems.
Innovation Solution
A cloud-based line differential relay protection testing method that enables centralized control from one end, using a server to establish connections between relay test systems at both ends, authenticate, and perform sequential line differential relay protection tests synchronized by GPS-based timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional end-to-end line differential testing is performed with physical presence at both ends, then testing can be conducted with basic equipment, but it requires two skilled engineers and is prone to operational errors due to unsynchronized test systems
Solution Approach 1:
The patent introduces a server as an intermediary component that coordinates between the local relay test system and remote relay test system. The server manages authentication, establishes daisy-chain connections, and synchronizes test operations, eliminating the need for two skilled engineers to manually coordinate while ensuring synchronized testing across both locations.
Solution Approach 2:
The patent replaces the mechanical coordination requirement (two engineers physically present and manually synchronizing tests) with an automated electronic system. The server-based architecture uses digital communication and automated synchronization protocols to substitute the manual mechanical coordination process, improving both reliability and ease of operation.
2Productivity
If centralized control from one end is implemented via cloud-based system, then the need for skilled manpower is reduced and testing efficiency is enhanced, but it requires establishing complex connections and authentication protocols
Solution Approach 1:
The patent implements preliminary authentication and connection establishment actions before the actual testing begins. The server authenticates both local and remote relay test systems in advance, establishes the daisy-chain connection beforehand, and prepares the testing environment. This preliminary setup automates the complexity, allowing centralized control to operate efficiently during the actual testing phase.
3Measurement precision
If GPS-based timing synchronization is used for sequential tests, then testing accuracy is improved, but it adds dependency on external timing infrastructure
Solution Approach 1:
The patent makes the server perform multiple functions: it acts as an authentication authority, a connection manager, and a timing synchronization coordinator. By consolidating these functions in a single universal platform, the system reduces overall complexity despite adding GPS-based timing, as the server handles all these tasks centrally rather than requiring separate dedicated systems for each function.
Data Source
AI summary
A cloud-based line differential relay testing includes establishing, by a local relay test system, communication with a server, wherein the local relay test system comprises a local relay test unit connected to a local relay of a transmission line, providing a user interface for enabling the local relay test system to initiate line differential relay testing on both the local relay and a remote relay; receiving line differential relay test parameter values for performing a sequence of line differential relay protection tests on the local relay and the remote relay; sending, to a remote relay test system with the by way of the server, a command for performing the sequence of line differential relay tests based on the line differential relay test parameter values; and performing, by the local relay test system, the sequence of line differential relay protection tests based on the line differential relay test parameter values.