WO2020062715A1 - Procédé et appareil d'attribution de quantité de délestage de charge - Google Patents

Procédé et appareil d'attribution de quantité de délestage de charge Download PDF

Info

Publication number
WO2020062715A1
WO2020062715A1 PCT/CN2019/071558 CN2019071558W WO2020062715A1 WO 2020062715 A1 WO2020062715 A1 WO 2020062715A1 CN 2019071558 W CN2019071558 W CN 2019071558W WO 2020062715 A1 WO2020062715 A1 WO 2020062715A1
Authority
WO
WIPO (PCT)
Prior art keywords
load
shedding
allocation
amount
sub
Prior art date
Application number
PCT/CN2019/071558
Other languages
English (en)
Chinese (zh)
Inventor
白杨
任祖怡
夏尚学
王鹏翔
王良
徐柯
李龙龙
祝万
高楠
王君超
Original Assignee
南京南瑞继保电气有限公司
南京南瑞继保工程技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南京南瑞继保电气有限公司, 南京南瑞继保工程技术有限公司 filed Critical 南京南瑞继保电气有限公司
Publication of WO2020062715A1 publication Critical patent/WO2020062715A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
    • G06Q10/06312—Adjustment or analysis of established resource schedule, e.g. resource or task levelling, or dynamic rescheduling
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30—Systems 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
    • Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS 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
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems
    • Y04S20/222—Demand response systems, e.g. load shedding, peak shaving

Definitions

  • the invention belongs to the field of power system automation, and particularly relates to a load shedding amount distribution method and device in a power system.
  • one unit calculates the total required load shedding at the load-shedding master station, and then the main Stations are allocated proportionately according to the load shedding capacity of each load-shedding sub-station.
  • the number of load-shedding sub-stations is also increasing. The calculation may produce a large distribution error. For example, for a stability control system with 20 load-shed substations, if the minimum unit of measurement for the system load is 1MW, the maximum load-shedding amount is allocated according to the rounding principle. 10MW load may be over-cut or 9MW load may be under-cut. Over-cut load may increase the social impact of the accident. Too much under-cut load may not achieve the expected control effect and may even cause system instability.
  • the object of the present invention is to provide a method and a device for allocating a load shedding amount, by redistributing the difference between the total required sheer amount and the total amount of the initial allocation, thereby improving the accuracy of the load shedding amount allocation and preventing overcutting or under penguin load .
  • the solution of the present invention is:
  • a load shedding amount distribution method includes the following steps:
  • Residual calculation link Calculate the distribution balance of each sub-station according to the total required cut amount, the load shedding capacity of each load-shed sub-station, and the initial allocation amount of each load-shed sub-station;
  • Residue sorting link arrange the distribution residues in descending order
  • the remaining demand cutting amount is additionally allocated to the load shedding substations in the order of the distribution residual from large to small until the total demand cutting amount is equal to the total distributing amount.
  • the total required load shedding amount is Pxq
  • the load shedding capacity of each load shedding substation is Pkq1, Pkq2, ..., PkqN
  • N is the total number of load shedding substations.
  • the initial allocations to the load-shedding substations are Pcs1, Pcs2, ..., PcsN
  • the initial allocations to the kth load-shedding substation are as follows:
  • Pcsk is the initial allocation of the k-th load-shedding substation
  • Pkqi is the cuttable load of the i-th load-shedding substation
  • Pcs is the total initial allocation
  • Pcsi is the initial allocation of the i-th load-shedding substation
  • Psy is the remaining amount to be cut.
  • step (2) the allocation remainder of each sub-station is calculated according to the following formula:
  • Pysk is the distribution remainder of the k-th load-shedding substation.
  • the total required cut amount, the cuttable load amount of each sub-load substation, and the initial allocation amount are all measured using the smallest unit of measurement in the specific application scenario of this method, and each amount is an integer. Means.
  • step (3) before performing the remainder sorting, a unique identification code is allocated to each load-shedding substation, and the identification code is the number of this load-shedding substation.
  • the allocation remainder of each load-shedding substation When sorting the allocated remainder, the The unique identification codes of the load-shedding substations are sorted, and the allocation remainder of each load-shedding substation always corresponds to the position of the unique identification code of the station in the sequencing sequence. For example, the allocation remainder Pysk of each load shedding execution station always corresponds to the position of the unique identification code k of the station in the sorting sequence. In this way, the load shedding substation corresponding to the sorted allocation remainder can be quickly found through the unique identification code, so that Quickly distribute additional load shedding.
  • the remaining allocation is Psy load-shedding sub-stations, and each station adds the capacity corresponding to the smallest unit of measurement in the application scenario of the method, that is, the The initial allocated amount of Psy load-shed sub-stations is increased by 1 to obtain its final allocated load-shed amount.
  • the initial allocated amount of load-shed sub-stations that are ranked later is the final allocated load-shed amount.
  • the invention also proposes a load shedding amount distribution device, which includes: an initial allocation module, a remainder calculation module, a remainder sorting module, and an additional allocation module, wherein:
  • the initial allocation module distributes the total required cuts in proportion to the load shedding capacity of each load-shedding sub-station; rounding is not performed during the allocation to obtain the initial allocation amount of each load-shedding sub-station, and the total amount of initial allocation of each load-shedding sub-station is calculated ; Calculate the difference between the total required cutting amount and the sum of the initial allocation amount as the remaining required cutting amount Psy;
  • the remainder calculation module calculating the remaining balance of allocation of each sub-station according to the total required cut amount, the load capacity of each load-shed sub-station, and the initial allocation amount of each load-shed sub-station;
  • the remainder sorting module arranges the allocation remainders in descending order
  • the additional allocation module the remaining demand cutting amount is additionally allocated to the load shedding substations in descending order of the allocation remainder until the total demand cutting amount is equal to the total allocation amount.
  • the initial allocation module it is assumed that the total required load shedding amount is Pxq, and the load shedding capacity of each load shedding substation is Pkq1, Pkq2, ..., PkqN, and N is the total number of load shedding substations,
  • the initial allocations to the load-shedding substations are Pcs1, Pcs2, ..., PcsN, and the initial allocations to the kth load-shedding substation are as follows:
  • Pcsk is the initial allocation of the k-th load-shedding substation
  • Pkqi is the cuttable load of the i-th load-shedding substation
  • Pcs is the total initial allocation
  • Pcsi is the initial allocation of the i-th load-shedding substation
  • Psy is the remaining amount to be cut.
  • the allocation remainder of each sub-station is calculated according to the following formula:
  • Pysk is the distribution remainder of the k-th load-shedding substation.
  • the total required cut amount in the initial allocation module, the cuttable load amount of each load-shed substation, and the initial allocation amount are all measured by using the smallest unit of measurement in the specific application scenario of the method, and each amount is represented by an integer .
  • a unique identification code is assigned to each load shedding substation, and the identification code is the number of this load shedding substation.
  • the cut The unique identification code of the load substation is sorted, and the allocation remainder of each load shedding substation always corresponds to the position of the unique identification code of the station in the sequencing sequence.
  • the additional allocation module when performing additional allocation, the Psy number of load-shedding sub-stations with the allocation remainder in the front are added, and each station adds the capacity corresponding to the smallest unit of measurement in the application scenario of the method, that is, the preceding Psy
  • the initial allocated amount of each load-shedding sub-station is increased by 1 to obtain its final allocated load-shedding amount.
  • the initial allocation of the subsequent load-shedding sub-stations is the final allocated load-shedding amount.
  • the present invention has the beneficial effects that, when a load failure occurs in the power system and the load shedding is required, the accuracy of the load shedding amount distribution is improved, and over-cutting or under-cutting caused by rounding can be effectively avoided.
  • FIG. 1 is a schematic flow chart of a load shedding amount distribution method.
  • the present invention provides a load shedding amount distribution method.
  • specific embodiments and the accompanying drawings will be described as follows.
  • the solution of the present invention includes the following steps: (1) an initial allocation link, (2) a remainder calculation link, (3) a remainder sorting link, and (4) an additional allocation link.
  • the total cuttable load is:
  • the distribution is as follows:
  • the initial allocation is as follows:
  • Psy is called the remaining demand cut
  • the ranking of the unique identifier is as follows:
  • the remaining demand cuts are allocated to the load shedding sub-stations in descending order of the remaining allocation amount, until the total demand cuts are equal to the total allocated amount.
  • the situation of additional cuts is as follows :
  • the load-shedding sub-station 2 and the load-shedding sub-station 5 do not perform additional cuts, and are performed according to the initial allocation amount.
  • the actual total allocation amount is:
  • the actual total allocation amount is equal to the total required cut amount, and there is no allocation error.
  • the present invention improves the load shedding amount distribution accuracy when the power system needs to be cut when a fault occurs in the power system, and can effectively avoid over-cutting or under-cutting caused by rounding.
  • the present invention also provides a load shedding amount distribution device, including: an initial allocation module, a remainder calculation module, a remainder sorting module, and an additional allocation module, wherein:
  • the initial allocation module distributes the total required cuts in proportion to the load shedding capacity of each load-shedding sub-station; rounding is not performed during the allocation to obtain the initial allocation amount of each load-shedding sub-station, and the total amount of initial allocation of each load-shedding sub-station is calculated ; Calculate the difference between the total required cutting amount and the sum of the initial allocation amount as the remaining required cutting amount Psy;
  • the remainder calculation module calculating the remaining balance of allocation of each sub-station according to the total required cut amount, the load capacity of each load-shed sub-station, and the initial allocation amount of each load-shed sub-station;
  • the remainder sorting module arranges the allocation remainders in descending order
  • the additional allocation module the remaining demand cutting amount is additionally allocated to the load shedding substations in descending order of the allocation remainder until the total demand cutting amount is equal to the total allocation amount.
  • the initial allocation module in the initial allocation module, it is assumed that the total required load shedding amount is Pxq, and the load shedding capacity of each load shedding substation is Pkq1, Pkq2, ..., PkqN, and N is the total number of load shedding substations.
  • the initial allocations to the load-shedding substations are Pcs1, Pcs2, ..., PcsN, and the initial allocations to the kth load-shedding substation are as follows:
  • Pcsk is the initial allocation of the k-th load-shedding substation
  • Pkqi is the cuttable load of the i-th load-shedding substation
  • Pcs is the total initial allocation
  • Pcsi is the initial allocation of the i-th load-shedding substation
  • Psy is the remaining amount to be cut.
  • the allocation remainder of each sub-station is calculated according to the following formula:
  • Pysk is the distribution remainder of the k-th load-shedding substation.
  • the total required cut amount in the initial allocation module, the cuttable load amount of each load-shed substation, and the initial allocation amount are all measured using the smallest unit of measurement in the specific application scenario of this method, and each amount is used Integer representation.
  • a unique identification code is assigned to each load-shedding substation, and the identification code is the number of the load-shedding substation.
  • the unique identification codes of the load-shedding substations are sorted, and the allocation remainder of each load-shedding substation always corresponds to the position of the unique identification code of the station in the sorting sequence.
  • the Psy load-shedding sub-stations with the allocation remainder in front are allocated, and each station adds the capacity corresponding to the smallest unit of measurement in the application scenario of the method, which is about to
  • the initial allocation amount of the Psy load-shed sub-stations in the front is increased by 1 to obtain its final allocated load-shed amount.
  • the initial allocation of the load-shed sub-stations that are ranked later is the final allocated load-shed amount.

Landscapes

  • Business, Economics & Management (AREA)
  • Human Resources & Organizations (AREA)
  • Engineering & Computer Science (AREA)
  • Economics (AREA)
  • Strategic Management (AREA)
  • Tourism & Hospitality (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Marketing (AREA)
  • Entrepreneurship & Innovation (AREA)
  • General Physics & Mathematics (AREA)
  • General Business, Economics & Management (AREA)
  • Operations Research (AREA)
  • Development Economics (AREA)
  • Quality & Reliability (AREA)
  • Educational Administration (AREA)
  • Game Theory and Decision Science (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • General Health & Medical Sciences (AREA)
  • Primary Health Care (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • General Factory Administration (AREA)

Abstract

L'invention concerne un procédé d'attribution de quantité de délestage de charge, comprenant les étapes suivantes : (1) attribution proportionnelle, sans arrondi, d'une quantité de délestage requise totale en fonction de quantités de charge délestables de postes électriques de délestage de charge pour obtenir des quantités d'attribution initiales des postes électriques de délestage de charge, comptage de la somme des quantités d'attribution initiales des postes électriques de délestage de charge, c'est-à-dire de la quantité d'attribution initiale totale, et calcul d'une différence entre la quantité de délestage requise totale et la quantité d'attribution initiale totale, c'est-à-dire d'une quantité de délestage requise restante ; (2) calcul de restes d'attribution des postes électriques de partage de charge après attribution d'un module d'attribution initial ; (3) tri des restes d'attribution dans un ordre décroissant ; et (4) pour la quantité de délestage requise restante, attribution supplémentaire de quantités de délestage de charge aux postes électriques de délestage de charge dans l'ordre décroissant des restes d'attribution jusqu'à ce que la quantité de délestage requise totale soit égale à une quantité d'attribution totale. L'invention concerne également un appareil d'attribution de quantité de délestage de charge correspondant. La solution de la présente invention améliore la précision de l'attribution d'une quantité de délestage de charge, et peut efficacement éviter un sur-délestage ou un sous-délestage provoqués par un arrondi.
PCT/CN2019/071558 2018-09-30 2019-01-14 Procédé et appareil d'attribution de quantité de délestage de charge WO2020062715A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811153728.2 2018-09-30
CN201811153728.2A CN109359840B (zh) 2018-09-30 2018-09-30 一种切负荷量分配方法及装置

Publications (1)

Publication Number Publication Date
WO2020062715A1 true WO2020062715A1 (fr) 2020-04-02

Family

ID=65348390

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/071558 WO2020062715A1 (fr) 2018-09-30 2019-01-14 Procédé et appareil d'attribution de quantité de délestage de charge

Country Status (3)

Country Link
CN (1) CN109359840B (fr)
EC (1) ECSP20058983A (fr)
WO (1) WO2020062715A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110601208B (zh) * 2019-09-12 2023-06-27 深圳供电局有限公司 一种基于多维度负荷属性的精准负荷控制方法及系统
CN111294289A (zh) * 2020-03-26 2020-06-16 上海有个机器人有限公司 一种多链路切换的机器人通讯方法和系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014091419A1 (fr) * 2012-12-13 2014-06-19 Abb Technology Ltd Procédé de configuration d'application de commande dans un système de commande
CN103887801A (zh) * 2014-03-04 2014-06-25 西安交通大学 基于转差率响应的自适应紧急切感应电动机负荷的方法
CN104917291A (zh) * 2015-05-05 2015-09-16 国家电网公司 基于集散递阶控制框架的低频低压减负荷系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105281320B (zh) * 2015-09-16 2017-11-03 河海大学 协调经济性及切负荷率公平性的紧急负荷控制优化方法
CN107134787B (zh) * 2017-06-23 2019-10-18 国网江苏省电力公司电力科学研究院 基于分布式馈线自动化的切负荷控制系统和切负荷方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014091419A1 (fr) * 2012-12-13 2014-06-19 Abb Technology Ltd Procédé de configuration d'application de commande dans un système de commande
CN103887801A (zh) * 2014-03-04 2014-06-25 西安交通大学 基于转差率响应的自适应紧急切感应电动机负荷的方法
CN104917291A (zh) * 2015-05-05 2015-09-16 国家电网公司 基于集散递阶控制框架的低频低压减负荷系统

Also Published As

Publication number Publication date
CN109359840B (zh) 2021-06-18
ECSP20058983A (es) 2020-12-31
CN109359840A (zh) 2019-02-19

Similar Documents

Publication Publication Date Title
CN101431238B (zh) 一种计及“n-1”准则的配电系统供电能力评估方法
CN104218604B (zh) 一种基于网络等值法的配电网可靠性分析方法及系统
CN109103924B (zh) 基于柔性分析的可再生能源消纳能力关键因素的分析方法
WO2020062715A1 (fr) Procédé et appareil d'attribution de quantité de délestage de charge
CN111049193B (zh) 一种风电系统多调度场景的备用需求动态评估方法
CN102982230A (zh) 一种基于节点阻抗灵敏度的短路电流超标辅助决策方法
CN106026108A (zh) 一种考虑电网安全事故风险的稳控系统切负荷方法
CN107181253A (zh) 一种基于电网动态可靠性概率指标的电网规划方法
CN111585286B (zh) 考虑机群功率系数的安全稳定控制系统策略制定方法
CN108400597B (zh) 计及安控和一次调频特性的直流故障静态安全分析方法
CN110048398A (zh) 一种基于能量路由器的微电网分层协调控制方法及系统
CN103887792A (zh) 一种含分布式电源的低压配电网建模方法
CN104809543B (zh) 基于月度输变电设备检修计划的电网运行方式生成方法
CN110601208B (zh) 一种基于多维度负荷属性的精准负荷控制方法及系统
Mostafa et al. Power flow study and voltage stability analysis for radial system with distributed generation
CN109672170B (zh) 一种区域电网有功备用评估方法和系统
CN110707729B (zh) 一种多区域一次调频情况的分析方法、装置及存储介质
CN109359800B (zh) 一种配电自动化主站系统运行状态的评价方法及系统
CN103683267A (zh) 一种多直流系统中不同直流线路功率支援量分配方法
Bento et al. Analysis of the load growth direction variation in the dynamic security assessment
CN114336756B (zh) 一种新能源孤岛直流外送系统的调相机配置方法和系统
CN115759600A (zh) 一种多源多目标情况下的配网应急发电车自动调度方法
CN110661268B (zh) 一种新能源汇集站点的动态无功补偿需求确定方法及系统
Yao et al. Adaptive Grid Partitioning Considering Power Supply and Load Distribution
CN107679689B (zh) 利用分区矩阵技术分析多源配电网故障后果的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19866460

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19866460

Country of ref document: EP

Kind code of ref document: A1