Auxiliary device for topology identification of low-voltage transformer area and topology identification method

A technology for auxiliary devices and low-voltage station areas, which is applied in the direction of circuit devices, AC network circuits, electrical components, etc., and can solve the problem of circuit design of chopper generators without public characteristic currents, difficulty in implementing chopper detection and recognition algorithms, and topology recognition. The accuracy rate is limited and other problems, to improve the level of fine line loss management and power theft monitoring, realize the fine analysis of line loss, and improve the effect of intelligence and automation

Pending Publication Date: 2022-07-29
STATE GRID FUJIAN ELECTRIC POWER CO LTD +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the above-mentioned scheme does not disclose the specific circuit design of the characteristic current, that is, the chopper generator, which leads to the fact that the

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
  • Auxiliary device for topology identification of low-voltage transformer area and topology identification method
  • Auxiliary device for topology identification of low-voltage transformer area and topology identification method
  • Auxiliary device for topology identification of low-voltage transformer area and topology identification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] see figure 1 , an auxiliary device for topology identification of low-voltage platform area, the auxiliary device is installed at the circuit breaker of low-voltage platform area, including: control unit, magnetic coupling isolation drive module, characteristic signal switching module, voltage zero-crossing detection module, Communication module and AC sampling module;

[0056] The input end of the magnetic coupling isolation drive module is connected with the control unit, and the output end is connected with the characteristic signal switching module, which is used for generating a pulse driving signal according to the control signal sent by the control unit, and outputting the pulse driving signal to the characteristic signal switching module;

[0057] The characteristic signal switching module is connected to the 220V AC power grid, which converts the pulse drive signal input from the magnetic coupling isolation drive module into a characteristic current signal for...

Embodiment 2

[0085] see Figure 4 The present embodiment provides a method for identifying the topology of a low-voltage station area, which is implemented based on the auxiliary device for identifying the topology of a low-voltage station area described in the first embodiment, and includes the following steps:

[0086]Install the auxiliary device for topology identification in the low-voltage platform area at each circuit breaker of the low-voltage platform area; install the upper terminal as the central control module at the circuit breaker closest to the distribution transformer;

[0087] The communication address of each auxiliary device is stored in the upper terminal, and the injection instruction is sent to each auxiliary device one by one according to the communication address;

[0088] After the control unit of the auxiliary device corresponding to the communication address receives the injection instruction through the communication module, the control unit judges whether it has...

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 an auxiliary device for topology identification of a low-voltage transformer area and a topology identification method, and the auxiliary device comprises a magnetic coupling isolation driving module which is used for generating a pulse driving signal according to a control signal transmitted by a control unit, and outputting the pulse driving signal to a characteristic signal switching module; the characteristic signal switching module is used for generating a characteristic current signal and switching the characteristic current signal to an alternating current power grid; the voltage zero-crossing detection module is used for detecting the position of a voltage zero-crossing point of the alternating-current power grid; the communication module is used for performing data interaction with an upper terminal; the alternating current sampling module is used for sampling a current signal in an alternating current power grid and inputting the current signal to the control unit; the control unit is used for sending a control signal to the magnetic coupling isolation driving module according to an instruction sent by an upper terminal and the voltage zero crossing point position; and whether a characteristic current signal exists in the alternating current power grid is identified, and an identification result is uploaded to an upper terminal.

Description

technical field [0001] The invention relates to an auxiliary device and a topology identification method for topology identification of a low-voltage station area, and belongs to the technical field of low-voltage distribution network automation. Background technique [0002] The low-voltage station area is a key link connecting the power transmission and distribution network and users. Due to the large number of system levels, the number of branches, and the complex user load wiring, the topology structure is complex and changeable, and full-scale monitoring cannot be realized. Accurate topology information of the station area is helpful for the power grid to calculate the loss of each line, locate the short-circuit fault of the low-voltage distribution network, and manage the three-phase imbalance. [0003] The traditional topology identification methods include relying on the station area topology identification instrument for identification, and using manual inspection e...

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): H02J13/00H02J3/00
CPCH02J13/00001H02J13/00002H02J13/00036H02J3/00
Inventor 郑勇李戎李敏昱俞人楠夏圣峰黄颂汪逸帆杨朝赟吴文庚
Owner STATE GRID FUJIAN ELECTRIC POWER CO LTD
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