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1. WO2020135894 - METHOD AND DEVICE FOR ESTABLISHING TRANSMISSION LINE ON/OFF SWITCHING COMBINATION SCHEME FOR LIMITING SHORT CIRCUIT CURRENT

Publication Number WO/2020/135894
Publication Date 02.07.2020
International Application No. PCT/CN2020/076792
International Filing Date 26.02.2020
IPC
H02J 3/14 2006.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
12for adjusting voltage in ac networks by changing a characteristic of the network load
14by switching loads on to, or off from, network, e.g. progressively balanced loading
CPC
H02J 3/14
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
12for adjusting voltage in ac networks by changing a characteristic of the network load
14by switching loads on to, or off from, network, e.g. progressively balanced loading
Y02B 70/3225
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
70Technologies for an efficient end-user side electric power management and consumption
30Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
3225Demand response systems, e.g. load shedding, peak shaving
Y04S 20/222
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
SSYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
20Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
20End-user application control systems
222Demand response systems, e.g. load shedding, peak shaving
Applicants
  • 国网河北省电力有限公司经济技术研究院 ECONOMIC AND TECHNOLOGY RESEARCH INSTITUTE OF STATE GRID HEBEI ELECTRIC POWER CO., LTD. [CN]/[CN]
Inventors
  • 张章 ZHANG, Zhang
  • 袁博 YUAN, Bo
  • 王颖 WANG, Ying
  • 王涛 WANG, Tao
  • 邵华 SHAO, Hua
  • 康伟 KANG, Wei
  • 陈亮 CHEN, Liang
  • 张丽洁 ZHANG, Lijie
  • 杨洋 YANG, Yang
  • 申永鹏 SHEN, Yongpeng
  • 李光毅 LI, Guangyi
Agents
  • 北京品源专利代理有限公司 BEYOND ATTORNEYS AT LAW
Priority Data
201811600334.726.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) METHOD AND DEVICE FOR ESTABLISHING TRANSMISSION LINE ON/OFF SWITCHING COMBINATION SCHEME FOR LIMITING SHORT CIRCUIT CURRENT
(FR) PROCÉDÉ ET DISPOSITIF D'ÉTABLISSEMENT DE SCHÉMA DE COMBINAISON DE COMMUTATION SOUS/HORS TENSION DE LIGNES DE TRANSPORT POUR LIMITER UN COURANT DE COURT-CIRCUIT
(ZH) 限制短路电流的输电线路投切组合方案建立方法及装置
Abstract
(EN)
The invention provides a method and device for establishing a transmission line on/off switching combination scheme for limiting short circuit current. The method applies to the technical field of power systems, and comprises: setting an initial number k of lines to be switched off and a maximum number kmax of lines to be switched off; determining, for each node to be tested among a plurality of nodes to be tested, a k-self impedance upon switching off k lines; determining, on the basis of the k-self impedance of each of said nodes, k lines that meet scheme requirements and k lines that do not meet scheme requirements; on the basis of a preset step length d, increasing the initial number k of lines to be switched off to k+d; when k+d≤kmax, considering those nodes among the k lines that do not meet scheme requirements as nodes to be tested, and returning to the step of determining, for each node to be tested among a plurality of nodes to be tested, a k-self impedance upon switching off k lines, and then proceeding to the subsequent step; when k+d>kmax or when the current set of nodes to be tested is null, determining that the establishment of the transmission line on/off switching combination scheme is complete. The method and device for establishing a transmission line on/off switching combination scheme for limiting short circuit current allows for an on/off switching combination scheme to be established quickly.
(FR)
L'invention concerne un procédé et un dispositif d'établissement d'un schéma de combinaison de commutation sous/hors tension de lignes de transport pour limiter un courant de court-circuit. Le procédé s'applique au domaine technique des systèmes d'alimentation, et consiste à : définir un nombre initial k de lignes à commuter hors tension et un nombre maximal kmax de lignes à commuter hors tension; déterminer, pour chaque nœud à tester parmi une pluralité de nœuds à tester, une auto-impédance k lors de la commutation hors tension de k lignes; déterminer, sur la base de l'auto-impédance k de chacun desdits nœuds, k lignes qui satisfont à des exigences de schéma et k lignes qui ne satisfont pas aux exigences de schéma; sur la base d'une longueur de pas d prédéfinie, augmenter le nombre initial k de lignes à commuter hors tension à k + d; lorsque k + d ≤ kmax, considérer les nœuds parmi les k lignes qui ne satisfont pas aux exigences de schéma en tant que nœuds à tester, et retourner à l'étape consistant à déterminer, pour chaque nœud à tester parmi une pluralité de nœuds à tester, une auto-impédance k lors de la commutation hors tension de k lignes, puis passer à l'étape suivante; lorsque k + d > kmax ou lorsque l'ensemble de nœuds courants à tester est vide, déterminer que l'établissement du schéma de combinaison de commutation sous/hors tension de lignes de transport a été exécuté. Le procédé et le dispositif d'établissement d'un schéma de combinaison de commutation sous/hors tension de lignes de transport pour limiter un courant de court-circuit permettent d'établir rapidement un schéma de combinaison de commutation sous/hors tension.
(ZH)
公开了一种限制短路电流的输电线路投切组合方案建立方法及装置,该方法应用于电力系统技术领域,所述方法包括:设置初始切除线路数k和最大切除线路数k max;确定多个待检节点中的每个待检节点在切除k条线路后的k-自阻抗;根据每个待检节点的k-自阻抗确定k线合格方案和k线不合格方案;根据预设步长d增加所述初始切除线路数k至k+d;在k+d≤kmax的情况下,将k线不合格方案中的节点作为待检节点,并返回所述确定每个待检节点在切除k条线路后的k-自阻抗的步骤继续执行;在k+d>kmax或当前待检节点集为空的情况下,确定当前线路投切组合方案建立完成。本申请提供的限制短路电流的输电线路投切组合方案建立方法及装置能够快速建立投切组合方案。
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