Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A low-voltage power network three-phase load unbalance control system

A load imbalance and control system technology, applied in the electric power field, can solve problems such as three-phase imbalance that cannot be completely solved, and achieve the effect of avoiding workload and safety accidents

Inactive Publication Date: 2018-12-25
ZAOZHUANG POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +2
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of them can completely solve the three-phase unbalance problem.

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
  • A low-voltage power network three-phase load unbalance control system
  • A low-voltage power network three-phase load unbalance control system
  • A low-voltage power network three-phase load unbalance control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] Such as Figure 1-2 As shown, the low-voltage power grid three-phase load unbalance hierarchical control system of the present invention is composed of load side control system, distribution transformer side control system and communication monitoring system. The load-side control system is installed at the terminal position of the low-voltage distribution network, close to the side of the electrical equipment. The distribution transformer side control system is installed on the distribution transformer side of the low-voltage distribution network. Among them, the load side control system is composed of commutation module, analysis and control module, signal detection module and communication module. The phase commutation module can use a magnetic latching ...

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 low-voltage power network three-phase load unbalance control system. The low-voltage power network three-phase load unbalance control system is a hierarchical control system,which includes a load-side control system, a distribution-transformer-side control system and a communication monitoring system. After receiving the three-phase current information and calculating the optimal adjustment strategy by an intelligent algorithm, the control system realizes the initial adjustment through the load-side control system, and then realizes the fine adjustment by changing the capacitance compensation quantity and the capacitance compensation way through the distribution-side control system. The hierarchical control system can regulate three-phase unbalance by automatic detection, calculation, automatic real-time switching and power compensation, thereby effectively solving the problem of the current and voltage imbalance in the power grid caused by the three-phase load imbalance, avoiding manual load adjustment and other manual work and safety accidents, and achieving the balanced and stable operation of the power grid.

Description

technical field [0001] The invention belongs to the technical field of electric power and relates to a three-phase load unbalance control system of a low-voltage power grid. Background technique [0002] my country's urban and rural power grids mainly adopt a three-phase four-wire power distribution system. With the development of the economy, a large number of unbalanced industrial loads have appeared in the power system, such as industrial AC electric arc furnaces, electric locomotives, etc. In the low-voltage distribution network, due to the non-simultaneity of power consumption of single-phase loads and the uncontrollable growth of power consumption, it is easy to cause unbalanced three-phase loads in the distribution area. According to the statistical data of the power distribution transformer monitoring and management system, and after sampling measurement and verification, more than 60% of the distribution transformers have a three-phase unbalance of more than 50%, w...

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): H02J3/26H02J13/00
CPCH02J13/0006H02J3/26Y02B90/20Y02E40/50Y04S40/126
Inventor 王建永王维功王锦旗张少宝王子纯张鲁王帅王建军刘党邓天一宋均剑陈晨张辉
Owner ZAOZHUANG POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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