WO2022016655A1 - Système de modulation de fréquence primaire d'unité génératrice de puissance thermique ayant un dispositif accumulateur d'énergie à charge contrôlable - Google Patents

Système de modulation de fréquence primaire d'unité génératrice de puissance thermique ayant un dispositif accumulateur d'énergie à charge contrôlable Download PDF

Info

Publication number
WO2022016655A1
WO2022016655A1 PCT/CN2020/110950 CN2020110950W WO2022016655A1 WO 2022016655 A1 WO2022016655 A1 WO 2022016655A1 CN 2020110950 W CN2020110950 W CN 2020110950W WO 2022016655 A1 WO2022016655 A1 WO 2022016655A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
energy storage
unit
primary frequency
storage device
Prior art date
Application number
PCT/CN2020/110950
Other languages
English (en)
Chinese (zh)
Inventor
杨沛豪
兀鹏越
孙钢虎
柴琦
寇水潮
高峰
Original Assignee
西安热工研究院有限公司
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 西安热工研究院有限公司 filed Critical 西安热工研究院有限公司
Publication of WO2022016655A1 publication Critical patent/WO2022016655A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • H02J3/241—The oscillation concerning frequency

Definitions

  • the invention belongs to the technical field of thermal power generation, in particular to an energy storage device with a controllable load participating in a primary frequency regulation system of a thermal power unit.
  • the energy storage battery is generally used to participate in the primary frequency regulation control of the thermal power plant, but the transformation of the energy storage battery is relatively complicated, and the workload of the original system transformation is relatively large.
  • the energy storage battery is connected to the power side of the plant through a bidirectional power conversion system (PCS), which will cause excessive short-circuit current at the generator end, which is not conducive to the safe and stable operation of the unit, and on the other hand, the generator outlet
  • PCS bidirectional power conversion system
  • the capacity of the circuit breaker should be increased accordingly and the cost will be increased.
  • the cost of the IGBT used in the PCS device of the energy storage battery is too high and is easily damaged, which will inevitably affect the application of the energy storage battery in the primary frequency regulation of thermal power units.
  • the power grid dispatching agency conducts a frequency regulation assessment on the power plant through the change of the machine-end load collected by the RTU system.
  • the RTU system cannot collect the output information of the energy storage device.
  • the energy storage device participates in the primary frequency regulation of the thermal power unit, its improvement effect on the assessment indicators cannot be quantified and then fed back to the dispatching agency, which affects the assessment results and the power plant revenue.
  • the purpose of the present invention is to provide an energy storage device with a controllable load to participate in the primary frequency modulation system of the thermal power unit, which can meet the primary frequency modulation performance of the thermal power unit, and make little changes to the original thermal power unit.
  • the selected energy storage device with controllable load has no short-circuit feedback current; the power conversion device has a simple structure, only needs single-phase transmission power, and has high reliability; after the power information of the energy storage device is transmitted to the generator outlet power transmitter The difference with the output power of the generator is sent to the RTU device as the actual output of the unit to improve the quality of the primary frequency modulation response.
  • the present invention adopts the following technical scheme to realize:
  • An energy storage device with a controllable load participates in a primary frequency regulation system of a thermal power unit, including a factory power unit, an energy storage unit and a power transmission unit; wherein,
  • the energy storage unit is connected to the factory power unit through the outlet circuit breaker of the energy storage unit; the power information transmitted to the energy storage unit by section 1B of the 6kV factory bus in the factory power unit is sent to the power generation unit in the power transmission unit.
  • the difference between the power transmitter at the outlet of the generator and the collected output power of the generator is sent to the RTU device as the actual output of the unit.
  • a further improvement of the present invention lies in that the plant power unit includes the high plant transformer, the 6kV busbar section 1B and the high power transformer low voltage side 1A section circuit breaker, and the high power transformer passes through the high power transformer low voltage side 1B section circuit breaker and the high power transformer respectively.
  • the 1A section circuit breaker on the low voltage side of the transformer is connected to the 1B section of the 6kV utility busbar and the 1A section circuit breaker on the low voltage side of the high power plant transformer.
  • a further improvement of the present invention lies in that, in the energy storage unit, the electric energy comes from the 1B section of the 6kV factory bus, and in turn passes through the outlet circuit breaker of the energy storage unit, the energy storage step-down transformer and the single-phase conduction thyristor to the controllable load energy storage device powered by.
  • a further improvement of the present invention is that the single-phase conduction thyristor realizes power regulation control by controlling the conduction time of the thyristor.
  • the further improvement of the present invention is to perform primary frequency regulation for the auxiliary generator set, control the conduction time of the single-phase conduction thyristor in real time according to the change of the grid frequency, change the power input from the plant power system to the energy storage device in real time, and improve the primary frequency regulation of the thermal power set. indicators, one FM assessment will be exempted.
  • a further improvement of the present invention is that the generator outlet power transmitter simultaneously samples the power information from the energy storage unit and the power information from the generator outlet, and the generator output power minus the energy storage unit absorbed power is sent to the generator as the actual output of the unit. RTU unit.
  • the present invention has the following beneficial effects:
  • the energy storage device with controllable load adopted in the present invention can be equivalent to pure resistance, there is no short-circuit current feedback in the event of a short-circuit fault, no need to increase the high plant variable capacity, and the original thermal power plant power consumption system is relatively modified. small.
  • the single-phase conduction thyristor used in the present invention only needs single-phase conduction, that is, the power transmission direction is from the high-voltage side to the low-voltage side to the energy storage device, with simple structure and high reliability.
  • the difference with the output power of the generator is sent to the RTU device as the actual output of the unit.
  • the power information makes the improvement effect of the energy storage device on the assessment indicators quantified. Feedback to the dispatching agency can effectively improve the response quality of primary frequency regulation, meet the requirements of assessment indicators, reduce/exempt primary frequency regulation assessment, and improve the economic benefits of power generation enterprises.
  • the present invention has low transformation and operation and maintenance costs. It only needs to add an energy storage device, a single-phase conduction thyristor and an outlet circuit breaker, and does not need to modify the original power system and the circuit breaker on the high-power-plant-transformation low-voltage side, thereby improving the power supply. economical.
  • the present invention has low operation and maintenance cost, simple wiring mode of the whole system, low renovation operation and maintenance cost, high reliability and strong practicability, can effectively improve the response quality of primary frequency regulation, meet the requirements of assessment indicators, and improve the economy of power generation enterprises. benefit.
  • FIG. 1 is a schematic structural diagram of the present invention.
  • 1 plant power unit
  • 2 energy storage unit
  • 3 power transmission unit
  • 1-1 high power plant transformer
  • 1-2 1B section of 6kV power plant busbar
  • 1-3 high power plant transformer low voltage side 1B Section circuit breaker
  • 1-4 Section 1A circuit breaker on the low voltage side of the high power plant transformer
  • 1-5 Section 1A of the 6kV plant busbar
  • 2-1 The outlet circuit breaker of the energy storage unit
  • 2-2 The energy storage step-down transformer
  • 2-3 single-phase conduction thyristor
  • 2-4 controllable load energy storage device
  • 3-1 generator outlet power transmitter.
  • a layer/element when referred to as being "on" another layer/element, it can be directly on the other layer/element or intervening layers/elements may be present therebetween. element.
  • a layer/element when a layer/element is “on” another layer/element in one orientation, then when the orientation is reversed, the layer/element can be "under” the other layer/element.
  • the present invention has an energy storage device with a controllable load to participate in the primary frequency regulation system of a thermal power unit, and is characterized in that: it includes a factory power unit 1 , an energy storage unit 2 , and a power transmission unit 3 .
  • the energy storage unit 2 is connected to the factory power unit 1 through the outlet circuit breaker 2-1 of the energy storage unit; the power transmitted from the 6kV factory busbar 1B section 1-2 in the factory power unit 1 to the energy storage unit 2
  • the information is sent to the generator outlet power transmitter 3-1 in the power transmission unit 3, and the difference with the collected generator output power is sent to the RTU device as the actual output of the unit.
  • the plant power unit 1 includes the high plant transformer 1-1, the 6kV plant bus 1B section 1-2 and the high power transformer low voltage side 1A section circuit breaker 1-4, the high power transformer 1-1 is transformed into the low voltage through the high power plant respectively.
  • the circuit breaker 1-3 of section 1B on the side and the circuit breaker 1-4 of section 1A on the low-voltage side of the high-plant transformer are connected to the section 1-2 of the 6kV utility busbar 1B and the circuit-breaker 1-4 of section 1A on the low-voltage side of the high-power plant transformer.
  • the electric energy comes from 1-2 of section 1B of the 6kV factory busbar, and passes through the outlet circuit breaker 2-1 of the energy storage unit, the energy storage step-down transformer 2-2, and the single-phase conduction thyristor 2-3 to the outlet.
  • the controllable load energy storage device 2-4 supplies power.
  • the single-phase conduction thyristor 2-3 realizes power regulation control by controlling the conduction time of the thyristor.
  • the conduction time of single-phase conduction thyristor 2-3 is controlled in real time according to the change of the grid frequency, and the power input from the power system 2 to the energy storage device is changed in real time, so as to improve the primary frequency regulation index of the thermal power set and reduce the A FM examination.
  • the generator outlet power transmitter 3-1 transmitter is a measuring instrument with dual functions that can not only measure active and reactive power, but also measure active and reactive electric energy.
  • the power transmitter can convert the input voltage and input current signals into measurement signals that have a fixed function relationship with parameters such as active power, reactive power, and power factor, which is convenient for secondary equipment.
  • the power transmitter used in the present invention simultaneously samples the power information from the energy storage unit and the power information of the generator outlet, and the generator output power minus the energy storage unit absorbed power is sent to the RTU device as the actual output of the unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

L'invention concerne un système de modulation de fréquence primaire d'unité génératrice de puissance thermique ayant un dispositif accumulateur d'énergie dont la charge est contrôlable, comprenant une unité de consommation d'électricité d'usine (1), une unité accumulatrice d'énergie (2), et une unité de transmission de puissance (3). L'unité accumulatrice d'énergie (2) est connectée à l'unité de consommation d'électricité d'usine (1) au moyen d'un disjoncteur de borne de sortie (2-1) d'unité accumulatrice d'énergie; des informations de puissance transmises à l'unité accumulatrice d'énergie (2) par une section 1B de bus d'usine à 6 kV (1-2) dans l'unité de consommation d'électricité d'usine (1) sont envoyées à un transmetteur de puissance de borne de sortie de générateur (3-1) dans l'unité de transmission de puissance (3), et la différence entre les informations de puissance et une puissance de sortie de générateur collectée est prise en tant que sortie réelle d'unité à envoyer à un dispositif de RTU. À l'aide du système, la performance de modulation de fréquence primaire d'une unité génératrice de puissance thermique peut être satisfaite, et l'unité génératrice de puissance thermique originale est légèrement modifiée.
PCT/CN2020/110950 2020-07-24 2020-08-25 Système de modulation de fréquence primaire d'unité génératrice de puissance thermique ayant un dispositif accumulateur d'énergie à charge contrôlable WO2022016655A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010725683.2A CN111725828A (zh) 2020-07-24 2020-07-24 一种具有用可控负荷的储能装置参与火电机组一次调频系统
CN202010725683.2 2020-07-24

Publications (1)

Publication Number Publication Date
WO2022016655A1 true WO2022016655A1 (fr) 2022-01-27

Family

ID=72573563

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/110950 WO2022016655A1 (fr) 2020-07-24 2020-08-25 Système de modulation de fréquence primaire d'unité génératrice de puissance thermique ayant un dispositif accumulateur d'énergie à charge contrôlable

Country Status (2)

Country Link
CN (1) CN111725828A (fr)
WO (1) WO2022016655A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115275998A (zh) * 2022-08-09 2022-11-01 辽宁清河发电有限责任公司 基于分布式光伏的大数据中心供电保障系统及方法
CN115603337A (zh) * 2022-11-21 2023-01-13 西安热工研究院有限公司（Cn） 一种基于超级电容的经济型调频系统及方法
CN116131283A (zh) * 2022-12-28 2023-05-16 山东大学 火电-储能一体化系统及一次调频方法
CN116191501A (zh) * 2023-04-27 2023-05-30 中国电建集团河北省电力勘测设计研究院有限公司 一种压缩空气储能电站的高压厂用电系统及其布置方式
CN117039943A (zh) * 2023-10-10 2023-11-10 西安热工研究院有限公司 超级电容混合储能辅助火电机组agc调频方法和装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112821431A (zh) * 2021-02-26 2021-05-18 丛维民 一种电力供给系统以及电力供给系统的控制方法
CN113949089A (zh) * 2021-10-14 2022-01-18 西安热工研究院有限公司 一种具有谐波抑制能力的电化学储能换流系统及方法
CN113964850A (zh) * 2021-10-26 2022-01-21 西安热工研究院有限公司 一种发电厂储能参与机组agc调频的协调控制系统
CN218102597U (zh) * 2022-06-29 2022-12-20 西安热工研究院有限公司 一种常规加备用混合储能辅助火电机组调频系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103166241A (zh) * 2011-12-14 2013-06-19 深圳市康必达中创科技有限公司 一种孤网稳定控制系统
CN103311940A (zh) * 2013-07-08 2013-09-18 东南大学 一种微电网负荷储能一体化控制方法
EP2733811A2 (fr) * 2012-11-16 2014-05-21 Siemens Aktiengesellschaft Procédé pour la commande d'une centrale électrique
CN105958551A (zh) * 2016-06-01 2016-09-21 河北省电力建设调整试验所 一种利用储能提高火力发电厂agc响应的方法
CN107528330A (zh) * 2017-10-10 2017-12-29 赫普科技发展（北京）有限公司 一种用于火电厂的基于电压缩制冷机组的电网调频系统
CN107528351A (zh) * 2017-10-10 2017-12-29 赫普科技发展（北京）有限公司 一种用于火电厂的基于电压缩热泵的电网调频系统
CN110071533A (zh) * 2019-05-23 2019-07-30 西安热工研究院有限公司 一种适用于储能辅助发电机组调频的pmu改造系统
CN209658918U (zh) * 2019-05-23 2019-11-19 西安热工研究院有限公司 一种适用于储能辅助发电机组调频的pmu改造系统
CN212392673U (zh) * 2020-07-24 2021-01-22 西安热工研究院有限公司 一种可控负荷的储能装置参与火电机组一次调频系统

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103166241A (zh) * 2011-12-14 2013-06-19 深圳市康必达中创科技有限公司 一种孤网稳定控制系统
EP2733811A2 (fr) * 2012-11-16 2014-05-21 Siemens Aktiengesellschaft Procédé pour la commande d'une centrale électrique
CN103311940A (zh) * 2013-07-08 2013-09-18 东南大学 一种微电网负荷储能一体化控制方法
CN105958551A (zh) * 2016-06-01 2016-09-21 河北省电力建设调整试验所 一种利用储能提高火力发电厂agc响应的方法
CN107528330A (zh) * 2017-10-10 2017-12-29 赫普科技发展（北京）有限公司 一种用于火电厂的基于电压缩制冷机组的电网调频系统
CN107528351A (zh) * 2017-10-10 2017-12-29 赫普科技发展（北京）有限公司 一种用于火电厂的基于电压缩热泵的电网调频系统
CN110071533A (zh) * 2019-05-23 2019-07-30 西安热工研究院有限公司 一种适用于储能辅助发电机组调频的pmu改造系统
CN209658918U (zh) * 2019-05-23 2019-11-19 西安热工研究院有限公司 一种适用于储能辅助发电机组调频的pmu改造系统
CN212392673U (zh) * 2020-07-24 2021-01-22 西安热工研究院有限公司 一种可控负荷的储能装置参与火电机组一次调频系统

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115275998A (zh) * 2022-08-09 2022-11-01 辽宁清河发电有限责任公司 基于分布式光伏的大数据中心供电保障系统及方法
CN115275998B (zh) * 2022-08-09 2024-05-28 辽宁清河发电有限责任公司 基于分布式光伏的大数据中心供电保障系统及方法
CN115603337A (zh) * 2022-11-21 2023-01-13 西安热工研究院有限公司（Cn） 一种基于超级电容的经济型调频系统及方法
CN115603337B (zh) * 2022-11-21 2023-04-07 西安热工研究院有限公司 一种基于超级电容的经济型调频系统及方法
CN116131283A (zh) * 2022-12-28 2023-05-16 山东大学 火电-储能一体化系统及一次调频方法
CN116131283B (zh) * 2022-12-28 2023-09-12 山东大学 火电-储能一体化系统及一次调频方法
CN116191501A (zh) * 2023-04-27 2023-05-30 中国电建集团河北省电力勘测设计研究院有限公司 一种压缩空气储能电站的高压厂用电系统及其布置方式
CN116191501B (zh) * 2023-04-27 2023-06-27 中国电建集团河北省电力勘测设计研究院有限公司 一种压缩空气储能电站的高压厂用电系统及其布置方式
CN117039943A (zh) * 2023-10-10 2023-11-10 西安热工研究院有限公司 超级电容混合储能辅助火电机组agc调频方法和装置
CN117039943B (zh) * 2023-10-10 2024-03-08 西安热工研究院有限公司 超级电容混合储能辅助火电机组agc调频方法和装置

Also Published As

Publication number Publication date
CN111725828A (zh) 2020-09-29

Similar Documents

Publication Publication Date Title
WO2022016655A1 (fr) Système de modulation de fréquence primaire d'unité génératrice de puissance thermique ayant un dispositif accumulateur d'énergie à charge contrôlable
WO2019192040A1 (fr) Système de micro-réseau à courant alternatif intelligent de type éolien-photovoltaïque-diesel
CN101697418B (zh) 微网光伏发电逆变并网和谐波治理混合系统及其复合控制方法
CN102983593B (zh) 基于智能开关的微网无缝切换控制方法
CN107953803A (zh) 一种中压柔性直流牵引供电系统及其控制方法
CN103124072B (zh) 考虑负荷特性的电网动态无功优化系统及方法
CN104600719B (zh) 一种光伏发电系统并网接入综合无功补偿控制系统及方法
CN110176790B (zh) 具有快速频率响应的新能源发电站的功率控制方法和系统
CN106229984A (zh) 一种基于交直流混合配用电的多端口电能交换器
CN212392673U (zh) 一种可控负荷的储能装置参与火电机组一次调频系统
WO2013083064A1 (fr) Dégivrage ininterrompu, dispositif composite de compensation statique de la puissance réactive de type svg et procédé d'application de celui-ci
WO2023071266A1 (fr) Système de commande de coordination pour la modulation de fréquence de commande automatique de gain (agc) d'unité de participation à un stockage d'énergie d'une centrale électrique
CN101902146A (zh) 分布式发电系统中三相逆变器的电流式控制方法
CN207697541U (zh) 一种中压柔性直流牵引供电系统
CN104538988A (zh) 分布式电源接入的电压稳定调节系统及其控制方法
CN202997589U (zh) 微网智能开关
CN103647345A (zh) 微电源控制器及实现并离网控制的方法
CN103474994B (zh) 多端统一电能质量控制器直流侧电压控制装置及方法
CN206211536U (zh) 分布式电源电网
CN104348179A (zh) 一种用于轻型直流输电系统的控制方法
CN203251095U (zh) 一种电气化铁路负序补偿系统
CN107910870B (zh) 一种分布式静止串联补偿器的投退控制方法及装置
CN202797977U (zh) 一种兼顾电压支撑及故障限流的电力电子系统
CN212588095U (zh) 一种应用于电力传输的电力补偿变电系统
Wang A review of microgrid research

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: 20946340

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: 20946340

Country of ref document: EP

Kind code of ref document: A1