Supercharge Your Innovation With Domain-Expert AI Agents!

Method for starting ultra-weak receiving-end high-voltage direct-current power transmission system by using static synchronous compensation

A technology of static synchronous compensation and high-voltage direct current transmission, applied in flexible AC transmission systems, reactive power adjustment/elimination/compensation, power transmission AC networks, etc., can solve problems such as weak reactive power adjustment capabilities, and avoid commutation failure, improved voltage characteristics, and reduced commutation failure effects

Inactive Publication Date: 2013-01-23
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
View PDF2 Cites 40 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional HVDC, the control quantity is only the trigger angle, which can only control active power, and the ability to adjust reactive power is very weak.

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
  • Method for starting ultra-weak receiving-end high-voltage direct-current power transmission system by using static synchronous compensation
  • Method for starting ultra-weak receiving-end high-voltage direct-current power transmission system by using static synchronous compensation
  • Method for starting ultra-weak receiving-end high-voltage direct-current power transmission system by using static synchronous compensation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The invention provides a method for starting a very weak receiving end high-voltage direct current transmission system by using a static synchronous compensator. The present invention will be described below in conjunction with the accompanying drawings.

[0024] The method for starting the extremely weak receiving end high-voltage direct current transmission system by using the static synchronous compensator is described as follows:

[0025] System diagram such as figure 1 As shown in the figure, the STATCOM and HVDC are connected in parallel to the same B2 bus of the AC system at the receiving end, and the AC system S at the sending end 1 Connect the first system impedance Z 1 , the first system impedance Z 1 , the first filter LB1 and the first converter transformer T of the HVDC subsystem 1 Commonly connected to the B1 busbar, the HVDC subsystem consists of a first converter transformer T 1 , rectifier, DC transmission line, inverter and second converter transf...

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 method for starting an ultra-weak receiving-end high-voltage direct-current (HVDC) power transmission system by using a static synchronous compensator (STATCOM), belonging to the technical field of HVDC power transmission. The system is characterized in that a STATCOM and HVDC are connected to a same bus of an alternating-current system in parallel, and a STATCOM subsystem is connected with the same bus of an HVDC subsystem receiving-end alternating-current system through a current conversion reactor (X1). According to the method, a substep starting manner is adopted, and during starting, the STATCOM subsystem is subjected to the composite control of a series-connection current limiting resistor and current decoupling and voltage feedforward control; and soft wart is adopted for the HVDC subsystem, and the setting value of a current regulator is gradually increased in a start process till the finish of the start. According to the invention, the HVDC system can be started to a rated running state under the condition that a receiving end system is an ultra-weak alternating-current system, the voltage property of the HVDC receiving-end alternating system is improved, and the HVDC system is prevented from failed commutation.

Description

technical field [0001] The invention belongs to the technical field of high-voltage direct current transmission, and in particular relates to a method for starting a very weak receiving end high-voltage direct current transmission system by using static synchronous compensation. Background technique [0002] High Voltage Direct Current (HVDC) has been greatly developed since it was applied in power systems in the 1950s, and has become one of the most successful applications of modern power electronics technology in power systems. According to statistics, from 1954 to 2004, there were 95 HVDC projects put into operation in the world, most of which used ordinary thyristor converter valves for commutation. Since the Zhoushan DC transmission project in 1987, 19 high-voltage DC transmission projects have been completed and put into operation in my country. [0003] Since HVDC converters use ordinary thyristors without self-shutdown capability as commutation components, HVDC oper...

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): H02J3/36H02J3/18
CPCY02E40/16Y02E60/60Y02E40/10
Inventor 赵成勇倪俊强张岩坡郭春义
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com