DC bus multi-segment parallel operation switching method and system

A DC busbar and operation switching technology, applied in the direction of testing dielectric strength, etc., can solve the lack of grounding line selection function of the DC power supply system, the inability to realize the grounding line selection function of the DC power supply feeder circuit in the maintenance section, and the inability to remove the balance bridge circuit.

Active Publication Date: 2018-07-24
SHANDONG LUNENG SOFTWARE TECH
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the DC insulation monitoring devices of the two DC power supply systems cannot be put into operation at the same time, all or part of the grounding line selection function of the DC power supply system is missing
[0004] 2. Among the existing products, when a certain section of DC power supply equipment is overhauled and two sections of DC power supply are operated in parallel, for some products, the DC insulation monitoring device of the ins

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
  • DC bus multi-segment parallel operation switching method and system
  • DC bus multi-segment parallel operation switching method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The present invention is described in detail below in conjunction with accompanying drawing:

[0030] The invention discloses a multi-section parallel operation switching method of a DC bus, comprising:

[0031] When a section of DC power supply performs battery check discharge or equipment maintenance, the contact switch is closed, and two or more sections of DC power supply run in parallel, the current DC insulation monitoring host will automatically exit the operation, automatically cut off the balance bridge resistance, and the current DC bus all feeder lines The grounding line selection function is automatically switched to another DC insulation monitoring host for realization. The running conditions of all parallel running buses and branch circuits can be monitored by a section of DC bus.

[0032] figure 1 Disclosed is a system for realizing the switching method of multi-segment parallel operation of DC buses, including: A-section DC buses and B-section DC buses...

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

The invention discloses a DC bus multi-segment parallel operation switching method and system. The method comprises the steps that: two or more segments of DC buses run in parallel, when a DC power supply in a segment of DC bus is subjected to storage battery check discharge or equipment maintenance, and a DC insulation monitoring host in the segment of DC bus automatically exits an operation andautomatically cuts off balance bridge resistance; at the same time, a grounding line selection device of all feeders in the segment of DC bus is automatically switched to a normal DC bus such that thegrounding line selection function of the segment of the DC bus is automatically switched to DC insulation monitoring host of the normal DC bus to be achieved. The method and the system have the advantages that a DC insulation monitoring extension can automatically adapt to various different distribution screen configuration modes, the DC insulation monitoring extension can automatically change anoperation mode when a distribution screen changes an operation mode, and manual intervention is not needed.

Description

technical field [0001] The invention relates to the field of DC system bus grounding monitoring technology, in particular to a switching method and system for multi-segment parallel operation of a DC bus. Background technique [0002] Existing solutions (products) monitor the operation of a section of the busbar through a balanced bridge or an unbalanced bridge with a DC leakage current sensor; at present, the following two problems exist in the monitoring of the busbar grounding of the DC system: [0003] 1. In the substation DC power system with single-bus section configuration, when a section of DC power supply is performing battery checking discharge or equipment maintenance, the contact switch is closed, and the two sections of DC power supply run in parallel, and all DC loads of the whole station are provided by the other section of DC power supply . Since the DC insulation monitoring devices of the two-stage DC power supply systems cannot be put into operation at the...

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
IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 姚舜孟祥军巩方波王秉钧曹淑英
Owner SHANDONG LUNENG SOFTWARE TECH
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