Analog input type merging unit protection current transformer disconnection detection method
A protection current and disconnection detection technology, applied in the direction of measuring electrical variables, instruments, measuring devices, etc., can solve the problems of high cost, malfunction of protection devices, failure to detect the disconnection of the protection current transformer inside the merging unit, etc., and achieve Reduce the risk of misoperation and prevent the effect of protection calculations
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0036] The present invention will be further described below in conjunction with specific examples.
[0037] like figure 1 As shown, the protective current transformer in the merging unit is connected to the RC filter circuit and the operational amplifier in turn through wires, and is sent to the relay protection device after analog-to-digital conversion by the ADC.
[0038] like figure 2 As shown, an analog input type merging unit protection current transformer disconnection detection method includes the following steps:
[0039] In step (1), the merging unit transforms the protection current and measurement current in the same phase into protection current voltage signals and measurement current voltage signals through the internal protection current transformer and measurement current transformer respectively.
[0040] In step (2), the merging unit converts the protection current voltage signal and the measurement current voltage signal into a protection current digital ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com