Gas Density Relay Calibration Through Remote Temperature Adjustment
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Solution Overview
Problem
Existing gas density relays in high-voltage electrical equipment require regular maintenance and calibration, which is costly and poses safety risks due to the need for on-site intervention, especially in harsh environments with electromagnetic interference.
Innovation Solution
A field detection device with a temperature adjusting mechanism and intelligent control unit that allows for online calibration of gas density relays, eliminating the need for manual maintenance by regulating temperature changes to trigger contact actions and using an intelligent control unit for data processing and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual calibration of gas density relay is performed on-site, then calibration accuracy is ensured, but safety risks increase and operational costs rise due to the need for on-site intervention in harsh environments
Solution Approach 1:
The patent introduces a temperature adjusting mechanism as an intermediary device that can be remotely controlled to adjust the temperature of the gas density relay. This allows calibration to be performed without direct on-site intervention, as the temperature can be adjusted remotely through the adjusting mechanism while the actual relay remains in its installation location.
Solution Approach 2:
The patent replaces the traditional mechanical on-site calibration process with an automated system that uses temperature adjusting mechanisms and remote control. The manual mechanical adjustment of temperature and calibration parameters is substituted with automated temperature control and remote signaling, eliminating the need for personnel to physically access harsh environments.
2Reliability
If regular maintenance and calibration of gas density relays is performed, then reliability of gas density monitoring is improved, but operational costs and time consumption increase
Solution Approach 1:
The patent enables the gas density relay to perform self-calibration through the temperature adjusting mechanism. The relay can automatically detect temperature changes and adjust its calibration parameters accordingly, or the temperature adjusting mechanism can be remotely controlled to perform calibration without requiring external maintenance personnel, thus achieving self-service calibration.
Solution Approach 2:
The patent allows calibration to be performed in advance or on-demand through remote temperature adjustment, rather than waiting for scheduled maintenance cycles. The temperature can be adjusted beforehand to prepare the relay for calibration, or calibration can be triggered immediately when needed, reducing the overall time loss associated with maintenance.
3Ease of manufacture
If on-site calibration is conducted in harsh electromagnetic environments, then calibration can be performed, but safety risks and potential damage to calibration equipment increase
Solution Approach 1:
The patent uses the temperature adjusting mechanism as an intermediary that can be controlled remotely. The actual calibration process is performed through this intermediary device rather than directly exposing calibration equipment to the harsh electromagnetic environment of the gas density relay location, thus reducing the harmful effects of electromagnetic interference.
Solution Approach 2:
The patent extracts the temperature adjustment function from the calibration process itself. By separating the temperature adjusting mechanism from the relay and controlling it remotely, the harmful electromagnetic environment is excluded from the calibration operation, as only the temperature mechanism (which can be remotely controlled) needs to be present, not the full calibration equipment.
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 remote, efficient, and safe calibration of gas density relays, reducing operational costs and improving the reliability of power grids by eliminating the need for on-site maintenance.
Implementation Method 1
a temperature adjusting mechanism configured to adjust temperature rise and fall of a temperature compensation element of the gas density relay so as to enable the gas density relay to have contact action
Data Source
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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.