CN103715757A - Back-up type redundant low-voltage power distribution system used for nuclear power station - Google Patents

Back-up type redundant low-voltage power distribution system used for nuclear power station Download PDF

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Publication number
CN103715757A
CN103715757A CN201310698594.3A CN201310698594A CN103715757A CN 103715757 A CN103715757 A CN 103715757A CN 201310698594 A CN201310698594 A CN 201310698594A CN 103715757 A CN103715757 A CN 103715757A
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CN
China
Prior art keywords
power supply
switch
direct current
module
ups
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Pending
Application number
CN201310698594.3A
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Chinese (zh)
Inventor
曹新民
秦裕强
邱韶阳
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State Nuclear Power Automation System Engineering Co Ltd
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State Nuclear Power Automation System Engineering Co Ltd
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Application filed by State Nuclear Power Automation System Engineering Co Ltd filed Critical State Nuclear Power Automation System Engineering Co Ltd
Priority to CN201310698594.3A priority Critical patent/CN103715757A/en
Publication of CN103715757A publication Critical patent/CN103715757A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/30Systems 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
    • YGENERAL 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
    • Y04INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04SSYSTEMS 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
    • Y04S20/00Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20End-user application control systems

Abstract

The invention belongs to the technical field of low-voltage power distribution, and relates to a back-up type redundant low-voltage power distribution system used for a nuclear power station. The system is characterized in that a first alternating current, a first breaker switch, a first switch power supply, a power supply alternative module and a DC UPS controller are electrically connected in turn; a second alternating current, a second breaker switch, a second switch power supply, a power supply alternative module and the DC UPS controller are electrically connected in turn; the DC UPS controller and a DC UPS power supply are electrically connected; the first switch power supply and the second switch power supply are AC-to-DC power supply modules, and a monitoring device is also arranged to monitor the working state of each module of the system in real time. With configuration of redundant equipment and a back-up battery, reliability, continuity and safety of the system are enhanced. Meanwhile, the whole system also has advantages of being flexible in configuration, small in space occupation, simple in structure, convenient to maintain and monitor, etc.

Description

A kind of used in nuclear power station backup type redundancy low-voltage distribution system
Technical field
The invention belongs to low-voltage distribution technical field, be specifically related to a kind of backup type redundancy low-voltage distribution systems higher to reliability requirement such as nuclear power station that are applicable to.
Background technology
In the terminal low-voltage distribution system of industrial low-voltage distribution field, especially nuclear power station, usually need reliable and stable direct current output for field apparatus.At present, most low-voltage distribution system can promote the reliability and stability of whole distribution system by equipment multi-level by arranging, many redundancies, and some system is also guaranteed also can continue to power after alternating current loses by double power supply converting switch, interchange UPS controller and battery are set.But, often volume and weight is very huge for double power supply converting switch, interchange UPS controller and battery, the equipment of nuclear power station is often had relatively high expectations to anti-seismic performance, and so many heavy weight equipment certainly will more difficultly make whole system still can reliablely and stablely move under earthquake operating mode.In addition, this set also cannot carry out according to the rated power of a plurality of power consumption equipments the configuration of efficient, flexible, can cause unavoidably the unnecessary configuration of ups power power and battery, in addition the setting of multi-level many redundance units, system space and volume have been taken greatly, increase system cost expenditure, expended unnecessary resource.Meanwhile, once the double power supply converting switch in system breaks down, can cause the paralysis of whole distribution system.
Summary of the invention
The technical problem to be solved in the present invention is to provide that a kind of volume is little, cost is low, can in the application such as nuclear power station, effectively guarantee the backup type redundancy low-voltage distribution system of the reliable and stable operation of whole low-voltage distribution system again.
For achieving the above object, the technical solution used in the present invention is: a kind of used in nuclear power station backup type redundancy low-voltage distribution system, comprise the first alternating current, the second alternating current, the first killer switch, the second killer switch, the first Switching Power Supply, second switch power supply, power supply alternative module, direct current UPS controller and direct current ups power, it is characterized in that: described the first alternating current, the first killer switch, the first Switching Power Supply and power supply alternative module, direct current UPS controller is electrically connected to successively, described the second alternating current, the second killer switch, second switch power supply and power supply alternative module, direct current UPS controller is electrically connected to successively, described direct current UPS controller and direct current ups power are electrically connected to, described the first Switching Power Supply and second switch power supply are AC/DC power module.
Above-mentioned used in nuclear power station backup type redundancy low-voltage distribution system also comprises supervising device, and described the first killer switch, the second killer switch, the first Switching Power Supply, second switch power supply, power supply alternative module, direct current UPS controller are connected with supervising device respectively with direct current ups power.
The above power supply alternative module is power supply diode (led) module or double power supply converting switch.
Good effect of the present invention is: the alternating current of two-way redundancy is inputted after two Switching Power Supplies by killer switch respectively, through power supply alternative module, carries out after alternative selection, and input direct-current UPS controller is until output direct current supply; Use direct current UPS controller and direct current UPS battery to provide backup power to power supply circuits, once after the alternating current of two-way redundancy all loses, direct current UPS controller can switch the direct current UPS battery of enabling carry fast provides direct current output; System is also provided with supervising device, the operating state of each module of energy real-time monitoring system.The present invention has improved reliability, continuity and the fail safe of system by the configuration of redundance unit and backup type battery, simultaneously whole system also have flexible configuration, space hold few, simple in structure, maintain easily and the advantage such as monitoring.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and concrete embodiment, the invention will be further described.
Fig. 1 is the system architecture schematic diagram of the embodiment of the present invention.
Embodiment
As shown in Figure 1, a kind of used in nuclear power station backup type redundancy low-voltage distribution system, comprise 220V alternating current (i.e. the first alternating current) 101, 220V redundancy alternating current (i.e. the second alternating current) 102, the first killer switch 103, the second killer switch 104, the first Switching Power Supply 105, second switch power supply 106, power supply alternative module 107, direct current UPS controller 108 and direct current ups power 109, it is characterized in that: described the first alternating current 101, the first killer switch 103, the first Switching Power Supply 105 and power supply alternative module 107, direct current UPS controller 108 is electrically connected to successively, described the second alternating current 102, the second killer switch 104, second switch power supply 106 and power supply alternative module 107, direct current UPS controller 108 is electrically connected to successively, described direct current UPS controller 108 and direct current ups power 109 are electrically connected to, described the first Switching Power Supply 105 and second switch power supply 106 are AC/DC power module.
Above-mentioned used in nuclear power station backup type redundancy low-voltage distribution system also comprises supervising device, and described the first killer switch 103, the second killer switch 104, the first Switching Power Supply 105, second switch power supply 106, power supply alternative module 107, direct current UPS controller 108 are connected with supervising device 110 respectively with direct current ups power 109.
The above power supply alternative module 107 is power supply diode (led) module or double power supply converting switch.
As shown in Figure 1, system receives 220V alternating current 101 and the 102 two-way alternating currents inputs of 220V redundancy alternating current, and object is that while guaranteeing that wherein a road 220V alternating current breaks down, system still can provide AC power by another road alternating current; The first killer switch 103 and the second killer switch 104 connect respectively two-way alternating current; object is to provide current-limiting protection to circuit; the rated current that surpasses killer switch once branch current, this killer switch can disconnect the safety with protective circuit and equipment in time.
As shown in Figure 1, the first Switching Power Supply 105 and second switch power supply 106 turn direct current module for alternating current, the 220V alternating current of input can be carried out to rectification, filtering, voltage stabilizing until the direct current of stable output, the direct current of common output has 48VDC, 24VDC and 12VDC.The effect of power supply alternative module 107 is when one road input power breaks down, this power supply alternative module 107 can switch to rapidly the normal power supply output that another road input electricity continues the system that maintains, and common power supply alternative module 107 has power supply diode (led) module and double power supply converting switch.
As shown in Figure 1, the effect of direct current UPS controller 108 is to export will input electrofiltration ripple when input dc power is normal after, is 109 chargings of direct current UPS battery by its built-in charging circuit simultaneously; 108 of this direct current UPS controllers of having no progeny in input dc power switch to direct current UPS battery 109 output direct currents.Meanwhile, relevant indicator light also can be set on direct current UPS controller 108 panels and indicate its operating state, comprise normal operating conditions and battery charging state, contained electric weight in the battery of institute's carry that in addition showing rod's real-time prompting can be set.
As shown in Figure 1, direct current UPS battery 109 is online rechargeable battery, includes lead-acid battery, lithium ion battery, Ni-MH battery etc.In direct current UPS battery 109, be provided with protective circuit, comprise overcharge protection, overcurrent/short-circuit protection and over, to guarantee to overcharge and safety during discharge condition, and prevent the deterioration in characteristics of battery.When needs provide the more discharge period, can be by a plurality of direct current UPS battery 109 carry in parallel on direct current UPS controller 108.
As shown in Figure 1, supervising device 110 can be a contact signal receiving and displaying device, can be also an integrated engineer station for communication interaction function.As shown in fig. 1, the first killer switch 103, the second killer switch 104, the first Switching Power Supply 105, second switch power supply 106, power supply alternative module 107, direct current UPS controller 108, direct current UPS battery 109 can be delivered to supervising device 110 by output services state contact signal, can on supervising device 110, monitor their operating state in real time like this.In addition, can also real-time monitored on supervising device 110 to the information such as information about power, charging and discharging state and discharge period of direct current UPS battery 109.The operating state that each module of energy real-time monitoring system is set of supervising device 110, facilitates staff to monitor and safeguards.
As shown in Figure 1, except the equipment being connected with supervising device 110 connects by connection (in figure shown in dotted line), the connection between all the other equipment is all directly to connect by wire (in figure shown in solid line).Equipment all in Fig. 1 can be arranged on by the mounting bracket unification of standard on distribution electric plates, can guarantee that so whole low-voltage distribution system still can be moved normally under earthquake conditions.
As shown in Figure 1, described a kind of nuclear power station backup type redundancy low-voltage distribution system, will be finally for load provides needed direct current output.In actual application, according to rated power, rated voltage and the electric energy of load hold time capacity and the quantity of the direct current UPS battery in option and installment system flexibly.In addition, this low-voltage distribution system is exported the direct current of 24VDC conventionally, if load end need to, such as the direct current of 48VDC or 12VDC etc., can turn DC power module at the corresponding DC of output adjunction.
In sum, the present invention had both guaranteed the requirement to the high reliability of low-voltage distribution system and high security such as nuclear power station, had also effectively reached the advantages such as space hold is few, simple in structure, easy operating simultaneously.The introducing of two-way redundancy alternating current and Redundanter schalter power supply has reduced the system failure rate being caused by single equipment fault effectively, has increased the availability of system.The introducing of supervising device can each module of real-time monitoring system operating state, the especially real-time tracking to battery information, greatly facilitate real-time monitoring and the maintenance of staff to whole system.Being used in conjunction with of direct current UPS controller and direct current UPS battery, makes whole system have advantages of flexible configuration, has reduced to take up room, and has also possessed good economic and social benefit when guaranteeing safety and quality.

Claims (3)

1. a used in nuclear power station backup type redundancy low-voltage distribution system, comprise the first alternating current, the second alternating current, the first killer switch, the second killer switch, the first Switching Power Supply, second switch power supply, power supply alternative module, direct current UPS controller and direct current ups power, it is characterized in that: described the first alternating current, the first killer switch, the first Switching Power Supply and power supply alternative module, direct current UPS controller is electrically connected to successively, described the second alternating current, the second killer switch, second switch power supply and power supply alternative module, direct current UPS controller is electrically connected to successively, described direct current UPS controller and direct current ups power are electrically connected to, described the first Switching Power Supply and second switch power supply are AC/DC power module.
2. used in nuclear power station backup type redundancy low-voltage distribution system according to claim 1, it is characterized in that: also comprise supervising device, described the first killer switch, the second killer switch, the first Switching Power Supply, second switch power supply, power supply alternative module, direct current UPS controller are connected with supervising device respectively with direct current ups power.
3. used in nuclear power station backup type redundancy low-voltage distribution system according to claim 1 and 2, is characterized in that: described power supply alternative module is power supply diode (led) module or double power supply converting switch.
CN201310698594.3A 2013-12-19 2013-12-19 Back-up type redundant low-voltage power distribution system used for nuclear power station Pending CN103715757A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106557086A (en) * 2017-01-17 2017-04-05 国网福建省电力有限公司 A kind of transformer station's power-supply system presence assessment system
CN107947333A (en) * 2017-11-02 2018-04-20 广东核电合营有限公司 Realize security method menu, system and the control device of biserial power supply crossfeed
CN110417075A (en) * 2018-04-27 2019-11-05 矢崎总业株式会社 Power supply redundancy system
CN111064349A (en) * 2019-12-30 2020-04-24 无锡市金赛德电子有限公司 Electric ATX power supply and redundancy implementation method thereof
CN112162479A (en) * 2020-11-05 2021-01-01 国核自仪系统工程有限公司 Self-adaptive analog quantity redundancy output circuit based on hardware
RU2752259C1 (en) * 2018-12-30 2021-07-23 Тсинхуа Юниверсити Device for detecting and positioning ball elements

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CN202084984U (en) * 2011-03-28 2011-12-21 广州地铁设计研究院有限公司 Light current integration UPS system applied to urban railway system
CN202721495U (en) * 2012-06-21 2013-02-06 江苏省电力公司苏州供电公司 Alternating-current and direct-current integrated uninterruptible power supply
US20130057073A1 (en) * 2004-01-23 2013-03-07 American Power Conversion Corporation Methods and apparatus for providing uninterruptible power
CN203707869U (en) * 2013-12-19 2014-07-09 国核自仪系统工程有限公司 Reserve-type redundancy low-voltage distribution system for nuclear power station

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130057073A1 (en) * 2004-01-23 2013-03-07 American Power Conversion Corporation Methods and apparatus for providing uninterruptible power
CN202084984U (en) * 2011-03-28 2011-12-21 广州地铁设计研究院有限公司 Light current integration UPS system applied to urban railway system
CN202721495U (en) * 2012-06-21 2013-02-06 江苏省电力公司苏州供电公司 Alternating-current and direct-current integrated uninterruptible power supply
CN203707869U (en) * 2013-12-19 2014-07-09 国核自仪系统工程有限公司 Reserve-type redundancy low-voltage distribution system for nuclear power station

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106557086A (en) * 2017-01-17 2017-04-05 国网福建省电力有限公司 A kind of transformer station's power-supply system presence assessment system
CN107947333A (en) * 2017-11-02 2018-04-20 广东核电合营有限公司 Realize security method menu, system and the control device of biserial power supply crossfeed
CN110417075A (en) * 2018-04-27 2019-11-05 矢崎总业株式会社 Power supply redundancy system
CN110417075B (en) * 2018-04-27 2023-03-14 矢崎总业株式会社 Power supply redundancy system
RU2752259C1 (en) * 2018-12-30 2021-07-23 Тсинхуа Юниверсити Device for detecting and positioning ball elements
CN111064349A (en) * 2019-12-30 2020-04-24 无锡市金赛德电子有限公司 Electric ATX power supply and redundancy implementation method thereof
CN112162479A (en) * 2020-11-05 2021-01-01 国核自仪系统工程有限公司 Self-adaptive analog quantity redundancy output circuit based on hardware

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