Device and method for insulation monitoring in power supply system

A technology of power supply system and equipment, which is applied in the direction of measuring electricity, testing circuits, measuring electrical variables, etc., and can solve problems such as inability to expand and monitor insulation symmetry loss

Active Publication Date: 2015-06-17
BENDER SA
View PDF5 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method for insulation fault location has the disadvantage that, as a passive method, it cannot be extended to monitor symmetrical losses of insulation

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for insulation monitoring in power supply system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] According to the present invention in figure 1 The device 2 for insulation monitoring and insulation fault location described in , comprises, as essential functional modules, a measurement signal generator 6 , an evaluation device 8 and two differential current measuring devices 10 and 12 . The device 2 is integrated into a branched three-phase power supply system 4 (HRG system), which in this exemplary embodiment consists of a main system 14 and a subsystem 16 . The neutral point of the main system 14 is connected to earth PE via a neutral point resistor 18 .

[0066] The measuring signal generator 6 generates the measuring voltage U via the neutral point resistor 18 mess And it is injected into the power supply system 4 as a voltage drop. The measuring signal generator 6 of the device 2 according to the invention can optionally have a function for adjusting the measuring voltage U mess The control unit 20 of the control unit 20, wherein, in the form of a common mod...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

A device and method is for insulation monitoring in a power supply system composed of a main system including a neutral point that is high-resistance grounded via a neutral-point resistance and, optionally, of at least one subsystem, wherein the main system and the subsystem each have a differential current measuring device for registering a differential current. The invention is based on feeding a measuring signal into the optionally branched HRG system via an active measuring method and registering the fault current driven by the measuring signal in the outgoing power feeds to be monitored by means of a differential current measurement and using the registered fault current in an evaluating device to determine the total insulation resistance of the power supply system and to determine the partial insulation resistances of the main system and potentially present subsystems. Furthermore, the insulation monitoring device can be employed for insulation fault location.

Description

technical field [0001] The present invention relates to a device and a method for insulation monitoring in a power supply system consisting of a main system comprising a neutral point connected to high-resistance ground via a neutral point resistance and optionally at least one subsystem, Therein, the main system and the subsystem each have a differential current measuring device for recording the differential current. Background technique [0002] In order to ensure high availability and operational safety of the electrical power supply and to guarantee the safety of persons in the operating area of ​​the electrical installation, supply networks are widely used, in contrast to grounding network types, the active components of which are separated from the ground potential. In such supply networks, known as unearthed IT systems, active conductors can exhibit insulation faults without necessarily interrupting ongoing installation operations, because due to the ideally infinite...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R27/18
CPCG01R27/18G01R31/086G01R31/14G01R31/52
Inventor 迪特尔·黑克尔埃克哈德·布勒克曼布克哈德·毛赫特
Owner BENDER SA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap