EP2815480A2 - Unité électrique conçue pour une centrale hydraulique d'accumulation par pompage - Google Patents

Unité électrique conçue pour une centrale hydraulique d'accumulation par pompage

Info

Publication number
EP2815480A2
EP2815480A2 EP13709409.0A EP13709409A EP2815480A2 EP 2815480 A2 EP2815480 A2 EP 2815480A2 EP 13709409 A EP13709409 A EP 13709409A EP 2815480 A2 EP2815480 A2 EP 2815480A2
Authority
EP
European Patent Office
Prior art keywords
converter
machine
unit
output voltage
electrical unit
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP13709409.0A
Other languages
German (de)
English (en)
Inventor
Carl-Ernst STEPHAN
Claes Hillberg
Hanspeter Erb
Peter Steimer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Technology AG
Original Assignee
ABB Technology AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47844349&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2815480(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to EP13709409.0A priority Critical patent/EP2815480A2/fr
Publication of EP2815480A2 publication Critical patent/EP2815480A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D19/00—Starting of machines or engines; Regulating, controlling, or safety means in connection therewith
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • 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
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/40—Synchronising a generator for connection to a network or to another generator
    • H02J3/42—Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/46—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor
    • H02P1/52—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor by progressive increase of frequency of supply to motor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/022—Synchronous motors
    • H02P25/024—Synchronous motors controlled by supply frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
    • H02P27/14—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation with three or more levels of voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/08—Control of generator circuit during starting or stopping of driving means, e.g. for initiating excitation
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

Definitions

  • the invention relates to a pumped storage power plant, in particular an electrical unit for this, comprising a converter and a rotating electrical synchronous machine, wherein the machine is provided in a cavern.
  • renewable energy sources such as wind and solar, provide a steadily increasing share of electricity demand. These energy sources have unsteady operating times. Thus, a direct and permanent supply of consumers with electricity from these sources of energy can not be guaranteed. For this purpose, energy storage must be used, which allow rapid changes between electricity surplus and electricity deficit and their performance and energy flow direction can be changed quickly and continuously.
  • energy storage here are different system available, which are particularly suitable for specific amounts of energy and applications cases.
  • kinetic accumulators e.g., flywheels
  • electrochemical stores batteries, redox flow cells
  • electromagnetic stores capacitor, supercapacitors, superconducting coils
  • thermodynamic storage tanks compressed air storage tanks, electrothermal storage tanks
  • large amounts of energy typically over 100 MWh and usually over 1 GWh pumped storage are used.
  • Pumped storage or pumped storage power plants are particularly interesting due to the large amount of energy that can be stored.
  • water is pumped from a first natural or artificially created reservoir into a second, higher-lying reservoir.
  • the electrical energy is converted into potential energy.
  • water from the higher storage tanks are routed via a turbine back to the lower reservoir. Minimizing losses in the conversion processes is particularly important to this system.
  • variable-speed drives By decoupling the speed of the machines from a grid frequency, pump and turbine rotational speeds can be adjusted to operate close to optimum efficiency. In addition, it allows the variation of the speed in the pumping mode to freely adjust the power consumption. In particular, variable speed systems can be quickly connected from standstill to the network or synchronized.
  • Pumped storage according to the prior art have double-fed asynchronous machines and power electronic frequency converter, whereby a speed control of a pump and a turbine is possible.
  • a stator of the double-fed asynchronous machine is connected directly to the power grid with grid frequency.
  • a rotor of the doubly fed asynchronous machine is connected to the network via a frequency converter and can thus have a variable frequency.
  • a pumping power is controlled and on the other hand, if necessary, the efficiency of the system can be increased.
  • pumped storage In pumped storage is often provided that the machinery such as turbines, pumps and motor-generators are housed in an example introduced into a rock cavern, a cavity or in a closed space below the second storage tank.
  • Another form of pumped storage provides pump, turbine and motor generator at the lower end of a shaft, with other power plant components are provided, for example, above ground in a building or in the shaft.
  • a major disadvantage of this arrangement with double-fed asynchronous is an increased space requirements within the cavern whereby costs for the construction of the pumped storage power plant and excavation of the cavern are significantly increased.
  • the transformer has losses of the order of 1-2% of the transmitted active power.
  • the use of a transformer is disadvantageous due to the high cost of the transformer.
  • a transformer has a significant risk of explosion due to transformer oils and thus represents a significant security risk.
  • the present invention has the object to simplify the construction, operation and maintenance of a pumped storage power plant and to increase the efficiency.
  • the invention provides an electrical unit for a pumped storage power plant, which can be connected to a power grid.
  • the electrical unit comprises at least one frequency converter and a rotating electrical synchronous machine, which serves as a motor or generator depending on an operating mode of the machine.
  • the machine can be mechanically connected to a water turbine and a water pump or a reversible pump turbine.
  • the converter is designed as a modular multilevel converter MMC and directly or directly, ie without an intermediate transformer, connected to the machine, wherein the converter has an adjustable voltage.
  • the converter has a multiplicity of series-connected unit cells for scaling an output voltage.
  • the unit cells each have, for example, a capacitor or an inductance,
  • unit cells can be controlled separately, for example, to adapt the output voltage to the electrical machine.
  • edge steepness and amplitude of pulses between an output of the converter and the machine, for example terminals of the machine to relieve the insulation is limited.
  • a multiplicity of voltage steps for example small steps for changing the output voltage, can be used.
  • a further embodiment provides that the output voltage has low harmonic distortions so that the mains connection conditions are met without additional filtering and there are no differences in the design of the machine with respect to harmonics compared to a direct mains connection.
  • Such network connection conditions are defined, for example, in a grid code.
  • the converter is connected to the network side with a block transformer.
  • the invention simplifies the construction of a pumped storage power plant, in particular in an underground construction, for example in a rock cavern by saving a transformer between the machine and converter. Continue to be Saves active power losses of the dropping transformer and the electrical unit has an increased efficiency.
  • FIG.l a schematic representation of an electrical unit with a converter, a synchronous electrical machine and a block transformer.
  • the electrical unit 1 shows a schematic representation of an electrical unit 1 connected to a power network 2.
  • the electrical unit 1 comprises a modular multilevel converter 3 and a rotating electrical synchronous machine 4.
  • the machine 4 is housed for example in a cavern.
  • a block transformer 5 for connecting the electrical unit to the power network 2 is provided in this embodiment.
  • Frequency conversion is produced by means of a combination of a rectifier and an inverter, which are connected to one another via a concentrated or distributed voltage intermediate circuit or current intermediate circuit.
  • the intermediate circuit furthermore has units for storing energy, for example, capacitors in the case of a voltage intermediate circuit and inductors in a current intermediate circuit.
  • the operation of the machine with a freely selectable speed has significant advantages.
  • an established, reliable and low-maintenance generator technology can be used.
  • a pump and a turbine operate independently of each other in their optimal speed range.
  • the operationally accessible speed range extends continuously from zero to the maximum speed and is limited only by the operational limits of the pump and the turbine.
  • the pump and the turbine can be combined in principle in a unit, for example a pump turbine.
  • Another advantage is a very fast grid coupling and the ability to generate positive and negative reactive power in the converter 3, so that the generator can be operated only with active power, which has a more compact design. Furthermore, can be quickly switched by the use of the converter 3, for example, from pumping to turbine operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Eletrric Generators (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Ac Motors In General (AREA)
  • Motor And Converter Starters (AREA)
  • Rectifiers (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)

Abstract

L'invention concerne une centrale hydraulique d'accumulation par pompage, en particulier une unité électrique (1), comprenant un convertisseur (3) et une machine synchrone électrique rotative (4). Le convertisseur (3) se présente sous la forme d'un convertisseur à plusieurs niveaux et la machine (4) peut être directement reliée à ce convertisseur (3), ledit convertisseur (3) présentant une tension ajustable.
EP13709409.0A 2012-03-09 2013-03-11 Unité électrique conçue pour une centrale hydraulique d'accumulation par pompage Withdrawn EP2815480A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13709409.0A EP2815480A2 (fr) 2012-03-09 2013-03-11 Unité électrique conçue pour une centrale hydraulique d'accumulation par pompage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12158786 2012-03-09
EP13709409.0A EP2815480A2 (fr) 2012-03-09 2013-03-11 Unité électrique conçue pour une centrale hydraulique d'accumulation par pompage
PCT/EP2013/054862 WO2013132099A2 (fr) 2012-03-09 2013-03-11 Unité électrique conçue pour une centrale hydraulique d'accumulation par pompage

Publications (1)

Publication Number Publication Date
EP2815480A2 true EP2815480A2 (fr) 2014-12-24

Family

ID=47844349

Family Applications (4)

Application Number Title Priority Date Filing Date
EP13709412.4A Withdrawn EP2815499A2 (fr) 2012-03-09 2013-03-11 Procédé pour faire fonctionner une unité électrique conçue pour une centrale hydraulique d'accumulation par pompage
EP13709408.2A Active EP2823557B2 (fr) 2012-03-09 2013-03-11 Unité électrique pour centrale de pompage
EP13709409.0A Withdrawn EP2815480A2 (fr) 2012-03-09 2013-03-11 Unité électrique conçue pour une centrale hydraulique d'accumulation par pompage
EP13710818.9A Revoked EP2823543B1 (fr) 2012-03-09 2013-03-11 Procédé d'utilisation d'un groupe électrique

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP13709412.4A Withdrawn EP2815499A2 (fr) 2012-03-09 2013-03-11 Procédé pour faire fonctionner une unité électrique conçue pour une centrale hydraulique d'accumulation par pompage
EP13709408.2A Active EP2823557B2 (fr) 2012-03-09 2013-03-11 Unité électrique pour centrale de pompage

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13710818.9A Revoked EP2823543B1 (fr) 2012-03-09 2013-03-11 Procédé d'utilisation d'un groupe électrique

Country Status (5)

Country Link
US (4) US9683540B2 (fr)
EP (4) EP2815499A2 (fr)
JP (4) JP2015516790A (fr)
CN (4) CN104145390B (fr)
WO (7) WO2013132100A2 (fr)

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CN104410172A (zh) * 2014-11-28 2015-03-11 国家电网公司 一种基于直流发电电动机的抽水蓄能系统
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US11685604B2 (en) 2021-09-17 2023-06-27 William Taggart, IV Underground energy storage systems

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JP2015509698A (ja) 2015-03-30
WO2013132105A2 (fr) 2013-09-12
US20150292469A1 (en) 2015-10-15
WO2013132105A3 (fr) 2014-05-08
EP2823543B1 (fr) 2016-10-05
EP2823557A2 (fr) 2015-01-14
WO2013132098A3 (fr) 2014-07-03
WO2013132101A2 (fr) 2013-09-12
EP2823557B1 (fr) 2016-08-10
EP2823557B2 (fr) 2019-08-28
WO2013132098A2 (fr) 2013-09-12
CN104145395A (zh) 2014-11-12
WO2013132100A2 (fr) 2013-09-12
JP2015511108A (ja) 2015-04-13
CN104145415A (zh) 2014-11-12
CN104145390A (zh) 2014-11-12
WO2013132099A2 (fr) 2013-09-12
US9657709B2 (en) 2017-05-23
US9683540B2 (en) 2017-06-20
US20150048623A1 (en) 2015-02-19
EP2823543A1 (fr) 2015-01-14
WO2013132099A3 (fr) 2014-04-24
CN104145416B (zh) 2018-04-10
CN104145416A (zh) 2014-11-12
US20150035285A1 (en) 2015-02-05
EP2823557B8 (fr) 2016-09-28
JP2015512244A (ja) 2015-04-23
EP2815499A2 (fr) 2014-12-24
JP2015516790A (ja) 2015-06-11
WO2013132100A3 (fr) 2014-09-12
WO2013132102A3 (fr) 2014-01-16
US20150035499A1 (en) 2015-02-05
WO2013132102A2 (fr) 2013-09-12
WO2013132103A1 (fr) 2013-09-12
CN104145390B (zh) 2018-04-10

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