GB2186130A - Standby power supply for motor - Google Patents

Standby power supply for motor Download PDF

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Publication number
GB2186130A
GB2186130A GB08602604A GB8602604A GB2186130A GB 2186130 A GB2186130 A GB 2186130A GB 08602604 A GB08602604 A GB 08602604A GB 8602604 A GB8602604 A GB 8602604A GB 2186130 A GB2186130 A GB 2186130A
Authority
GB
United Kingdom
Prior art keywords
motor
plant
synchronous condenser
flywheel
drive motor
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Withdrawn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
GB08602604A
Other versions
GB8602604D0 (en
Inventor
Hilton Law
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.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB08602604A priority Critical patent/GB2186130A/en
Publication of GB8602604D0 publication Critical patent/GB8602604D0/en
Publication of GB2186130A publication Critical patent/GB2186130A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21D—NUCLEAR POWER PLANT
    • G21D1/00—Details of nuclear power plant
    • G21D1/02—Arrangements of auxiliary equipment
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/066—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems characterised by the use of dynamo-electric machines
    • 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
    • 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
    • Y02E30/00—Energy generation of nuclear origin
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

A motor 1 driving a pump 3 of the cooling system of a plant, such as a sodium pump of a nuclear reactor, is located adjacent the plant and is electrically coupled 13 to a synchronous condenser 11 located remote from the plant, and a flywheel 15 forms part of the rotor of the synchronous condenser 11. When the normal power supply 5 is available the synchronous condenser 11 provides reactive power to the motor 1, whereas if the normal supply fails, the flywheel drives the synchronous condenser 11 which acts as a generator supplying electrical power to the motor. The system enables the flywheel 15 to be removed from the restricted area around the reactor. <IMAGE>

Description

SPECIFICATION Drive motor systems This invention relates to drive motor systems.
In particular the invention relates to drive motor.systems for driving the cooling systems of a plant for example a nuclear reactor.
In order that the motor incorporated in such a drive motor system has enough inertia to limit deceleration in the event of total loss of electrical power to the motor, it is desirable that the motor include a flywheel. As the cooling system, together with the motor, must necessarily be located adjacent the plant, and the fly wheel will generally be of relatively large diameter, this leads to difficulties if the space available round the plant is limited.
It is an object of the present invention to provide a drive motor system for driving the cooling system of a plant wherein this difficulty is overcome.
According to the present invention a drive motor system for driving the cooling system of a plant comprises a motor located adjacent the plant, and a synchronous condenser located remote from the plant the synchronous condenser being electrically coupled to the motor such that a flywheel forming part of the rotor of the synchronous condenser provides inertial forces for the motor.
One drive motor system in accordance with the present invention will now be described, by way of example only, with reference to the accompanying drawing which is a schematic diagram of the system.
Referring to the drawing the system includes a cage induction motor 1 arranged to drive a sodium pump 3. The pump 3 is in turn arranged to pump liquid sodium round the reactor tank (not shown) to be cooled, the motor 1 and pump 3 thus being situated adjacent the reactor. The motor 1 is powered from a dedicated static frequency supply equipment incorporating a static variable frequency converter 5 to which the power station auxiliaries normal three phase supply is fed. The output of the converter 5 is connected via a three phase variable frequency feeder 7, into which a high reliability circuit breaker 9 is incorporated, to a synchronous condenser 11. The synchronous condenser is situated outside the reactor area, but is electrically connected to the pump motor via a solid electrical link 13.
The synchronous condenser incorpoates a flywheel 1 5 forming part of the rotor for the synchronous condenser.
Thus the synchronous condenser 11 fulfils the dual functions of providing reactive power to the motor 1, and enabling the flywheel 1 5 to be removed from the restricted area round the reactor, the flywheel forming part of the rotor of the synchronous condenser.
In the event of the failure of the three phase supply or tripping of the circuit beaker 9 the flywheel 15 will continue to rotate due to mechanical inertia so that the synchronous condenser 11 will act as a generator providing electrical power to the motor 1 enabling the pump 3 to run for a period to ensure adequate shutdown cooling of the reactor. Reliable transfer of inertia power from the flywheel 15 to the motor 1 is ensured by the use of a solid electrical link 13 between the synchronous condenser 11 and motor 1 and by prociding a suitably reliable field system for the synchronous condenser 11.
It will be appreciated that normally there will be a number of cooling systems each having a drive motor system and associated pump orovided for the reactor, for example four, not all the cooling systems being required to maintain adequate shutdown cooling in the event of power failure.
1. A drive motor system for driving the cooling system of a plant comprising a motor located adjacent the plant, and a synchronous condenser located remote from the plant, the synchronous condenser being electrically coupled to the motor such that a flywheel forming part of the rotor of the synchronous condenser provides inertial forces for the motor.
2. A drivemotor system in accordance with Claim 1 in which the plant is a nuclear reactor.
3. A drive motor system for driving the cooling system of a plant substantially as hereinbefore described with reference to the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (3)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Drive motor systems This invention relates to drive motor systems. In particular the invention relates to drive motor.systems for driving the cooling systems of a plant for example a nuclear reactor. In order that the motor incorporated in such a drive motor system has enough inertia to limit deceleration in the event of total loss of electrical power to the motor, it is desirable that the motor include a flywheel. As the cooling system, together with the motor, must necessarily be located adjacent the plant, and the fly wheel will generally be of relatively large diameter, this leads to difficulties if the space available round the plant is limited. It is an object of the present invention to provide a drive motor system for driving the cooling system of a plant wherein this difficulty is overcome. According to the present invention a drive motor system for driving the cooling system of a plant comprises a motor located adjacent the plant, and a synchronous condenser located remote from the plant the synchronous condenser being electrically coupled to the motor such that a flywheel forming part of the rotor of the synchronous condenser provides inertial forces for the motor. One drive motor system in accordance with the present invention will now be described, by way of example only, with reference to the accompanying drawing which is a schematic diagram of the system. Referring to the drawing the system includes a cage induction motor 1 arranged to drive a sodium pump 3. The pump 3 is in turn arranged to pump liquid sodium round the reactor tank (not shown) to be cooled, the motor 1 and pump 3 thus being situated adjacent the reactor. The motor 1 is powered from a dedicated static frequency supply equipment incorporating a static variable frequency converter 5 to which the power station auxiliaries normal three phase supply is fed. The output of the converter 5 is connected via a three phase variable frequency feeder 7, into which a high reliability circuit breaker 9 is incorporated, to a synchronous condenser 11. The synchronous condenser is situated outside the reactor area, but is electrically connected to the pump motor via a solid electrical link 13. The synchronous condenser incorpoates a flywheel 1 5 forming part of the rotor for the synchronous condenser. Thus the synchronous condenser 11 fulfils the dual functions of providing reactive power to the motor 1, and enabling the flywheel 1 5 to be removed from the restricted area round the reactor, the flywheel forming part of the rotor of the synchronous condenser. In the event of the failure of the three phase supply or tripping of the circuit beaker 9 the flywheel 15 will continue to rotate due to mechanical inertia so that the synchronous condenser 11 will act as a generator providing electrical power to the motor 1 enabling the pump 3 to run for a period to ensure adequate shutdown cooling of the reactor. Reliable transfer of inertia power from the flywheel 15 to the motor 1 is ensured by the use of a solid electrical link 13 between the synchronous condenser 11 and motor 1 and by prociding a suitably reliable field system for the synchronous condenser 11. It will be appreciated that normally there will be a number of cooling systems each having a drive motor system and associated pump orovided for the reactor, for example four, not all the cooling systems being required to maintain adequate shutdown cooling in the event of power failure. CLAIMS
1. A drive motor system for driving the cooling system of a plant comprising a motor located adjacent the plant, and a synchronous condenser located remote from the plant, the synchronous condenser being electrically coupled to the motor such that a flywheel forming part of the rotor of the synchronous condenser provides inertial forces for the motor.
2. A drivemotor system in accordance with Claim 1 in which the plant is a nuclear reactor.
3. A drive motor system for driving the cooling system of a plant substantially as hereinbefore described with reference to the accompanying drawing.
GB08602604A 1986-02-03 1986-02-03 Standby power supply for motor Withdrawn GB2186130A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08602604A GB2186130A (en) 1986-02-03 1986-02-03 Standby power supply for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08602604A GB2186130A (en) 1986-02-03 1986-02-03 Standby power supply for motor

Publications (2)

Publication Number Publication Date
GB8602604D0 GB8602604D0 (en) 1986-03-12
GB2186130A true GB2186130A (en) 1987-08-05

Family

ID=10592432

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08602604A Withdrawn GB2186130A (en) 1986-02-03 1986-02-03 Standby power supply for motor

Country Status (1)

Country Link
GB (1) GB2186130A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015024A1 (en) * 1993-11-24 1995-06-01 Abb Atom Ab Pump drive system for recirculation of coolant flow in a nuclear reactor vessel
EP2442423A3 (en) * 2010-04-28 2017-09-27 General Electric Company Systems and methods for controlling an inertia of a synchronous condenser

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB283902A (en) * 1927-01-19 1929-01-24 Vickers Electrical Co Ltd Improvements in electrical power systems for ship propulsion and other purposes
GB746268A (en) * 1954-11-29 1956-03-14 Standard Telephones Cables Ltd Improvements in or relating to electrical power supply equipment with standby
GB1107891A (en) * 1964-03-17 1968-03-27 Clerk King Poynter & Company L Improvements in or relating to electricity storage and regeneration systems
GB1109886A (en) * 1964-08-11 1968-04-18 Walker Sons & Company Ltd A plant for operating machines
GB1136646A (en) * 1965-04-23 1968-12-11 Licentia Gmbh Installation for the supply of power on board a turbine-driven ship
GB1166196A (en) * 1966-06-23 1969-10-08 Licentia Gmbh Improved System for Producing Alternating Current
GB1257765A (en) * 1969-02-26 1971-12-22
US4203041A (en) * 1978-09-01 1980-05-13 Anton Piller KG. Battery/mains generator set for the production of interruption-free current
GB1584396A (en) * 1978-05-30 1981-02-11 Westinghouse Brake & Signal Standby electric power supplies

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB283902A (en) * 1927-01-19 1929-01-24 Vickers Electrical Co Ltd Improvements in electrical power systems for ship propulsion and other purposes
GB746268A (en) * 1954-11-29 1956-03-14 Standard Telephones Cables Ltd Improvements in or relating to electrical power supply equipment with standby
GB1107891A (en) * 1964-03-17 1968-03-27 Clerk King Poynter & Company L Improvements in or relating to electricity storage and regeneration systems
GB1109886A (en) * 1964-08-11 1968-04-18 Walker Sons & Company Ltd A plant for operating machines
GB1136646A (en) * 1965-04-23 1968-12-11 Licentia Gmbh Installation for the supply of power on board a turbine-driven ship
GB1166196A (en) * 1966-06-23 1969-10-08 Licentia Gmbh Improved System for Producing Alternating Current
GB1257765A (en) * 1969-02-26 1971-12-22
GB1584396A (en) * 1978-05-30 1981-02-11 Westinghouse Brake & Signal Standby electric power supplies
US4203041A (en) * 1978-09-01 1980-05-13 Anton Piller KG. Battery/mains generator set for the production of interruption-free current

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
WO A1 85/01021 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015024A1 (en) * 1993-11-24 1995-06-01 Abb Atom Ab Pump drive system for recirculation of coolant flow in a nuclear reactor vessel
US5621777A (en) * 1993-11-24 1997-04-15 Abb Atom Ab Pump drive system for recirculation of coolant flow in a nuclear reactor vessel
EP2442423A3 (en) * 2010-04-28 2017-09-27 General Electric Company Systems and methods for controlling an inertia of a synchronous condenser

Also Published As

Publication number Publication date
GB8602604D0 (en) 1986-03-12

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)