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

Device and method for treating three-phase imbalance of distribution transformer district

A three-phase, balanced technology, applied in the direction of reducing the asymmetry of the multi-phase network, eliminating/reducing the asymmetry of the multi-phase network, etc., can solve the problems of large use loss, limited processing capacity of the power grid branch, and high equipment cost, so as to avoid Damage, solve the three-phase unbalance problem, the effect of reasonable layout

Pending Publication Date: 2021-03-26
STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG POWER +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method can realize real-time continuous adjustment, so as to achieve efficient control of power grid imbalance; The equipment cost is relatively high, and the use loss is large

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 treating three-phase imbalance of distribution transformer district
  • Device and method for treating three-phase imbalance of distribution transformer district
  • Device and method for treating three-phase imbalance of distribution transformer district

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] figure 1 It shows a schematic diagram of a control device for three-phase unbalance in a distribution transformer area according to an embodiment of the present invention; figure 2 A schematic diagram of installation of a management device according to an embodiment of the present invention is shown.

[0050] Such as figure 1 and figure 2 As shown, this embodiment provides a treatment device for three-phase unbalance in the distribution transformer area. The treatment device 1 includes a control board 101 and an IGBT unit 102, wherein the control board 101 includes:

[0051] A current collection unit 1011, configured to collect current data and current phase information on the outlet side of the transformer;

[0052] The main control unit 1012 is electrically connected to the current acquisition unit 1011, the main control unit 1012 receives current data and current phase information, and obtains calculation data and driving signals;

[0053] The driving unit 1013...

Embodiment 2

[0069] Figure 4 It shows a schematic flowchart of a method for controlling three-phase unbalance in a distribution transformer area according to an embodiment of the present invention.

[0070] Such as Figure 4 As shown, this embodiment provides a treatment method for the three-phase unbalance in the distribution transformer area, using the treatment device for the three-phase imbalance in the distribution transformer area of ​​Example 1, the treatment method includes:

[0071] Obtain current data and current phase information on the outlet side of the transformer;

[0072] Obtain the actual value of the three unbalance degrees based on the current data;

[0073] Based on the actual values ​​of the three unbalance degrees, determine whether to connect to a single-phase new energy power supply.

[0074] Further, based on the actual values ​​of the three unbalanced degrees, determining whether to connect to a single-phase new energy power supply includes:

[0075] The curr...

Embodiment 3

[0089] Figure 5 It shows a schematic flowchart of a method for controlling three-phase unbalance in a distribution transformer area according to an embodiment of the present invention.

[0090] Such as Figure 5 As shown, a treatment method for the three-phase imbalance in the distribution transformer area of ​​this embodiment includes:

[0091] Step 1, obtain the three-phase current data Ia, Ib, Ic and current phase information Φa, Φb, Φc on the outlet side of the transformer;

[0092] Step 2, according to K=100%x|Imax-Imin| / Imax to obtain the actual value of the three unbalanced degrees;

[0093] Step 3, when K>25%, proceed to step 4, K≤25%, all switches S1 to S6 in the IGBT unit are turned off, and repeat step 1;

[0094] Step 4, according to the current data, obtain the current phase information Φmax of the maximum current Imax;

[0095] Step 5, transfer the current phase information Φmax to the single-phase new energy power supply through the communication unit;

[...

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 relates to a device and method for treating three-phase imbalance of a distribution transformer district. The device comprises a control panel and an IGBT unit. The control panel comprises a current collection unit used for collecting the current data and current phase information of an outlet side of a transformer, a main control unit connected with the current collection unit and used for receiving the current data and the current phase information and acquiring calculation data and a driving signal, a driving unit and a communication unit, wherein the driving unit is electrically connected with the main control unit, and the driving unit enables the IGBT unit to work according to a driving signal; and one end of the communication unit is electrically connected with the main control unit, the other end of the communication unit is connected with a single-phase new energy power supply, and the communication unit is used for interacting the calculation data and the current phase information with the single-phase new energy power supply. The treating device is simple in structure and reasonable in layout, the phenomenon of three-phase imbalance can be avoided, damage to related equipment is avoided, and the operation stability of the related equipment is improved.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a treatment device and method for three-phase unbalance in a distribution transformer area. Background technique [0002] The distribution network involves both the power supply side and the user side. It is the link that best reflects the power quality. The voltage level of the distribution network is low, the topology is complex, and there are many feeders of the line. The loss accounts for most of the power loss in the power system. If it is not controlled, it will cause great economic losses. At the same time, along with the fluctuation and randomness of the user's electricity consumption, the single-phase load in the distribution line shows obvious fluctuation and randomness. In most of the time , The three-phase load of the distribution line is unbalanced, resulting in the unbalance of the three-phase current and even the three-phase voltage. When the unbalance is hig...

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): H02J3/26
CPCH02J3/26Y02E40/50
Inventor 于闯郝文升王宁宁崔思瑶汤博赵婉宁
Owner STATE GRID LIAONING ELECTRIC POWER CO LTD SHENYANG 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