Gas Density Relay Temperature Compensation for Remote Field Checking

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current gas density monitoring systems for high-voltage electrical equipment, particularly SF6 gas-insulated equipment, require regular maintenance and on-site checks, which are costly and pose safety risks due to harsh operating environments and potential electromagnetic interference, necessitating a solution for remote, maintenance-free monitoring.

Innovation Solution

A field detection device and system incorporating a temperature adjusting mechanism and intelligent control unit that allows for online checking of gas density relays, enabling remote operation and reducing the need for on-site maintenance by controlling temperature and pressure adjustments to simulate contact actions, thereby monitoring gas density and moisture levels without physical intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If regular on-site maintenance and checks are performed on gas density relays, then measurement precision and reliability are maintained, but loss of time and productivity decrease due to required site visits

Engineering Contradiction:

Improvegas density relay reliabilityVSAvoidtime for on-site maintenance

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The gas density relay performs self-diagnostics by automatically adjusting its internal temperature compensation element and monitoring its own contact action values, eliminating the need for external maintenance personnel to visit the site for routine checks

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical inspection with an automated electronic detection system that uses temperature adjustment mechanisms and intelligent control units to remotely monitor and diagnose relay status

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of repair

If on-site maintenance personnel visit the substation field, then device complexity issues can be addressed, but object-affected harmful factors increase due to harsh environment and electromagnetic interference

Engineering Contradiction:

Improvedevice troubleshooting capabilityVSAvoidelectromagnetic interference exposure

Core Design Contradiction:

Ease of repairVSObject-affected harmful factors

Solution Approach 1:

The patent introduces an intermediary detection device that can be remotely operated to perform diagnostics and measurements, allowing maintenance personnel to control the system from a safe location away from the harsh electromagnetic environment of the substation

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

Manual inspection and repair operations are replaced with remote electronic detection and control systems that can diagnose issues without requiring personnel to physically enter the hazardous electromagnetic field

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If mechanical density relays with multiple contact groups are used, then measurement precision is achieved, but device complexity increases

Engineering Contradiction:

Improvegas density measurement accuracyVSAvoidmechanical contact structure

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent extracts the essential measurement function from the complex mechanical contact structure, using a simplified single-contact design combined with intelligent temperature compensation and electronic detection to achieve the same measurement precision

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent substitutes mechanical contact groups with an electronic detection system that uses temperature-adjusted contact action value monitoring to determine gas density, eliminating the need for multiple mechanical contact groups

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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

The system enables efficient, cost-effective, and safe online monitoring of gas density and moisture levels, reducing operational costs and improving the reliability of power grids by eliminating the need for regular on-site maintenance and minimizing safety hazards.

Implementation Method 1

a temperature adjusting mechanism... configured to adjust temperature rise and fall of a temperature compensation element

Methodology Applied

Scientific EffectTemperature adjustment: Heating

Data Source

PatentUS12181525B2Field detection device, system and method for achieving no maintenance of gas density relay

Publication Date: 2024.12.31 SHANGHAI ROYE ELECTRICAL CO LTD

AI summary

The invention discloses a field detection device and system for achieving no maintenance of a gas density relay. The field detection device comprises a temperature adjusting mechanism and an intelligent control unit, wherein rise and fall of the temperature of the temperature adjusting mechanism are controlled by the intelligent control unit, thereby making the temperature of a temperature compensation component of the density relay rise and fall to complete the field detection of the gas density relay, and no maintainer is needed to operate on site, which achieves no maintenance of the gas density relay, and greatly improves the efficiency and reliable and safe running of power grids. The invention further provides a field detection method for supporting normal running of the field detection device above.