CN203933147U - A kind of box-type substation that switches main power supply - Google Patents

A kind of box-type substation that switches main power supply Download PDF

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Publication number
CN203933147U
CN203933147U CN201420312983.8U CN201420312983U CN203933147U CN 203933147 U CN203933147 U CN 203933147U CN 201420312983 U CN201420312983 U CN 201420312983U CN 203933147 U CN203933147 U CN 203933147U
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CN
China
Prior art keywords
power supply
switch
box
inlet wire
type substation
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.)
Expired - Fee Related
Application number
CN201420312983.8U
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Chinese (zh)
Inventor
王轩
郑博文
李鹏
燕翚
Original Assignee
State Grid Corp of China SGCC
China EPRI Science and Technology Co Ltd
Smart Grid Research Institute of SGCC
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Application filed by State Grid Corp of China SGCC, China EPRI Science and Technology Co Ltd, Smart Grid Research Institute of SGCC filed Critical State Grid Corp of China SGCC
Priority to CN201420312983.8U priority Critical patent/CN203933147U/en
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Publication of CN203933147U publication Critical patent/CN203933147U/en
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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 utility model relates to a kind of box-type substation that switches main power supply, and described transformer station is applicable to ring network power supply system and double circuit power supply system, and described transformer station comprises primary equipment and secondary device, and described primary equipment comprises high voltage side of transformer and low-pressure side; Described high-pressure side comprises inlet wire 1 and the inlet wire 2 that leading-out terminal is connected; Described inlet wire 1 after leading-out terminal is connected and inlet wire 2 connect circuit breaker or contactor or on-load switch; Described inlet wire 1 is provided with solid converting switch combination switch unit 1; Described inlet wire 2 is provided with solid converting switch combination switch unit 2.Box-type substation cost of the present utility model is lower, and technology is reliable, has taken into account economy and practicality, meets China's power distribution network development trend, has good application prospect.

Description

A kind of box-type substation that switches main power supply
Technical field:
The utility model relates to a kind of box-type substation, more specifically relates to a kind of box-type substation that switches main power supply.
Background technology:
Along with China's town and country construction popularization and power load increase, the transformation of power distribution network deepens continuously.On the one hand, be subject to the restriction of the reasons such as shortage of land resource, require controller switching equipment to miniaturization, densification, energy-saving, be easy to the future development of installation administration; On the other hand, new high-tech industry extensive uses in distribution system such as frequency-changing speed-regulating driver, Precision Machining instrument, computer information system, make user propose strict demand to distribution network reliability and the quality of power supply.
Box-type substation is that a kind of Novel compact that high voltage switchgear, distribution transformer, low voltage switchgear, electric energy measuring equipment and reactive power compensator etc. are combined in one or several casing by certain connection plan changes into cover power distribution equipment, compare with the conventional civil engineering transformer station of identical electric pressure, capacity, its volume is only the latter 1/10-1/5.Have that floor space is little, compact conformation, all insulation, hermetically sealed, easy installation, be easy to the plurality of advantages such as distribution management, therefore, obtained application more and more widely in China.Box-type substation generally adopts the ordinary tap scheme of the combination such as circuit breaker and fuse, while being applied to ring network power supply system or double circuit power supply system, switching over speed is slower, can cause voltage dip to a certain degree, cannot meet the requirement of responsive and specific load.
The customization power technologies such as solid converting switch (SSTS) are applied to power distribution network and can effectively suppress voltage dip, improve power supply reliability, but when it uses, need to consider and load and power distribution equipment adaptation, have the shortcomings such as integrated level is low, floor space is larger.
Utility model content:
The purpose of this utility model is to provide a kind of box-type substation that switches main power supply, and power supply reliability be switched and be improved in this transformer station can fast to standby usage power supply.
For achieving the above object, the utility model is by the following technical solutions: a kind of box-type substation that switches main power supply, described transformer station is applicable to ring network power supply system and double circuit power supply system, and described transformer station comprises high voltage side of transformer and the low-pressure side of primary equipment; Described high-pressure side comprises inlet wire 1 and the inlet wire 2 that leading-out terminal is connected; Described inlet wire 1 after leading-out terminal is connected and inlet wire 2 connect circuit breaker or contactor or on-load switch; Described inlet wire 1 is provided with solid converting switch combination switch unit 1; Described inlet wire 2 is provided with solid converting switch combination switch unit 2.
A kind of box-type substation that switches main power supply that the utility model provides, described solid converting switch combination switch unit 1 comprises mechanical switch PS1 in parallel, reverse thyristor groups TS1 and overvoltage Limiting lightning arrester MOV1.
A kind of box-type substation that switches main power supply that the utility model provides, described solid converting switch combination switch unit 2 comprises mechanical switch PS2 in parallel, reverse thyristor groups TS2 and overvoltage Limiting lightning arrester MOV2.
Another preferred a kind of box-type substation that switches main power supply that the utility model provides, the end of incoming cables of described solid converting switch combination switch unit 1 connects respectively voltage transformer pt 1, Current Transmit 1 and lightning arrester; The end of incoming cables of described solid converting switch combination switch unit 2 connects respectively voltage transformer pt 2, Current Transmit 2 and lightning arrester.
The preferred a kind of box-type substation that switches main power supply again that the utility model provides, described circuit breaker or contactor or on-load switch connect plug-in fuse and the backup protection fuse being connected with high voltage side of transformer successively; Described circuit breaker or contactor or on-load switch end of incoming cables are connected with voltage transformer; Its leading-out terminal is connected with grounding switch.
Another preferred a kind of box-type substation that switches main power supply that the utility model provides, described low-pressure side comprises the low voltage incoming line cabinet being connected with described step down side, described voltage incoming line cabinet is connected with reactive power compensator and low-pressure line-outgoing cabinet respectively.
Another preferred a kind of box-type substation that switches main power supply that the utility model provides, described low voltage incoming line cabinet comprises Current Transmit, isolating switch and the circuit breaker or contactor or the on-load switch that connect successively, and the end of incoming cables of described Current Transmit is connected with voltage transformer; Described voltage outgoing line cabinet comprises at least 1 group outlet line, comprises ammeter, current transformer and circuit breaker or contactor or the on-load switch of series connection.
Another preferred a kind of box-type substation that switches main power supply that the utility model provides, shunt capacitance group or Reactor banks or bank of filters that described low-voltage reactive compensator capable comprises circuit breaker or contactor or on-load switch, is connected with circuit breaker or contactor or on-load switch.
With immediate prior art ratio, the utility model provides technical scheme to have following excellent effect
1, the utility model improves distribution network reliability, meets the harsh requirement of specific load to the quality of power supply;
2, the utility model station service power electronic device and measurement of correlation, control circuit are simple, and easily, with traditional structure case change combination, floor space is little, and integrated level is high;
3, the utility model fault detection algorithm and control strategy are simple and easy to realize;
4, the utility model, in retaining the little advantage of box-type substation floor space, has improved the power supply reliability of power distribution network, has reduced voltage dip and has interrupted the impact that sensitive load is produced;
5, the utility model cost is lower, and technology is reliable, has taken into account economy and practicality, meets China's power distribution network development trend and has a good application prospect and economic benefit.
Brief description of the drawings
Fig. 1 is the utility model high-pressure side overall structure schematic diagram;
Fig. 2 is low-pressure side overall structure schematic diagram of the present utility model;
Handoff procedure schematic diagram when Fig. 3 is the utility model fault.
Embodiment
Below in conjunction with embodiment, utility model is described in further detail.
Embodiment 1:
As Figure 1-3, the box-type substation that this routine utility model is switched main power supply is applicable to ring network power supply system and double circuit power supply system, and described transformer station comprises primary equipment and secondary device, and described primary equipment comprises high voltage side of transformer and low-pressure side; Described high-pressure side comprises the duplex feeding electric power incoming line that leading-out terminal is connected, and is respectively inlet wire 1 and inlet wire 2; Described inlet wire 1 after leading-out terminal is connected and inlet wire 2 connect circuit breaker or contactor or on-load switch, Current Transmit 3, plug-in fuse and the backup protection fuse being connected with high voltage side of transformer; Described inlet wire 1 is provided with solid converting switch combination switch unit 1; Described inlet wire 2 is provided with solid converting switch combination switch unit 2.
Described solid converting switch combination switch unit 1 comprises mechanical quick closing valve PS1 in parallel, reverse thyristor groups TS1 and overvoltage Limiting lightning arrester MOV1.
Described solid converting switch combination switch unit 2 comprises mechanical quick closing valve PS2 in parallel, reverse thyristor groups TS2 and overvoltage Limiting lightning arrester MOV2.Combination switch unit can be according to actual needs at anti-parallel thyristor two ends in parallel dynamically, quiescent voltage voltage equalizing protection circuit and overvoltage protection lightning arrester.
The end of incoming cables of described solid converting switch combination switch unit 1 connects respectively voltage transformer pt 1, Current Transmit 1 and lightning arrester; The end of incoming cables of described solid converting switch combination switch unit 2 connects respectively voltage transformer pt 2, Current Transmit 2 and lightning arrester.
Between described Current Transmit 3 and described circuit breaker or contactor or on-load switch, be provided with grounding switch; Described circuit breaker or contactor or on-load switch end of incoming cables are connected with voltage transformer.
Described low-pressure side comprises the low voltage incoming line cabinet being connected with described low-pressure side, and described voltage incoming line cabinet is connected with reactive power compensator and low-pressure line-outgoing cabinet respectively.
Described low voltage incoming line cabinet comprises Current Transmit, isolating switch and the circuit breaker or contactor or the on-load switch that connect successively, and the end of incoming cables of described Current Transmit is connected with voltage transformer; Described voltage outgoing line cabinet comprises at least 1 group outlet line, comprises ammeter, current transformer and circuit breaker or contactor or the on-load switch of series connection.
The shunt capacitance group of one end ground connection that described low-voltage reactive compensator capable comprises circuit breaker or contactor or on-load switch, be connected with circuit breaker or contactor or on-load switch.
Described transformer station is divided into normal operation and two states of failover, and end of incoming cables 1 is that main power source, end of incoming cables 2 are stand-by power supply;
When normal operation: when box-type substation normally moves, powered by main power source, mechanical switch PS1 closure in described solid converting switch combination switch unit 1, not conducting of anti-parallel thyristor group TS1, electric current flows to transformer by described mechanical switch PS1; Mechanical switch PS2 and not conducting of anti-parallel thyristor group TS2 in described solid converting switch combination switch unit 2;
Failover: break down when control unit detects main power source, and while meeting switching condition, give an order immediately and turn-off described mechanical switch PS1, send out triggering signal to anti-parallel thyristor group TS1 simultaneously; Because forward voltage has been set up at anti-parallel thyristor group TS1 two ends after described mechanical switch PS1 action, thyristor is conducting at once, load current will be transferred to anti-parallel thyristor group TS1 from described mechanical switch PS1, make mechanical switch PS1 blow-out and cancel the triggering signal of anti-parallel thyristor group TS1; After detecting that end of incoming cables 1 electric current is lower than threshold value ZCT, trigger the anti-parallel thyristor group TS2 conducting of the solid converting switch combination switch unit 2 of stand-by power supply end of incoming cables 2 through time delay, finally closed described mechanical switch PS2 cancel TS2 triggering signal again, electric current is transferred to described mechanical switch PS2 by anti-parallel thyristor group TS2, described anti-parallel thyristor group TS2 is bypassed disconnection, transformer is powered by described mechanical switch PS2 by stand-by power supply, and whole handoff procedure finishes; Described ZCT gets the percentage of rated current conventionally, as 0.5%;
In said process, the circuit breaker being connected with transformer or contactor or on-load switch remain conducting.
Described transformer station is by the on-line monitoring system Real-Time Monitoring power supply three-phase voltage amplitude in described secondary device, when any time fundamental positive sequence voltage fall while exceeding set point, as 15%, the fault detect loop decision-making system voltage in monitoring system falls fault, and sends electrical source exchange order.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although the utility model is had been described in detail with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement embodiment of the present utility model, and do not depart from any amendment of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of this claim scope.

Claims (8)

1. switch a box-type substation for main power supply, described transformer station is applicable to ring network power supply system and double circuit power supply system, and described transformer station comprises high voltage side of transformer and the low-pressure side of primary equipment; It is characterized in that: described high-pressure side comprises inlet wire 1 and the inlet wire 2 that leading-out terminal is connected; Described inlet wire 1 after leading-out terminal is connected and inlet wire 2 connect circuit breaker or contactor or on-load switch; Described inlet wire 1 is provided with solid converting switch combination switch unit 1; Described inlet wire 2 is provided with solid converting switch combination switch unit 2.
2. a kind of box-type substation that switches main power supply as claimed in claim 1, is characterized in that: described solid converting switch combination switch unit 1 comprises mechanical switch PS1 in parallel, reverse thyristor groups TS1 and overvoltage Limiting lightning arrester MOV1.
3. a kind of box-type substation that switches main power supply as claimed in claim 2, is characterized in that: described solid converting switch combination switch unit 2 comprises mechanical switch PS2 in parallel, reverse thyristor groups TS2 and overvoltage Limiting lightning arrester MOV2.
4. a kind of box-type substation that switches main power supply as claimed in claim 3, is characterized in that: the end of incoming cables of described solid converting switch combination switch unit 1 connects respectively voltage transformer pt 1, Current Transmit 1 and lightning arrester; The end of incoming cables of described solid converting switch combination switch unit 2 connects respectively voltage transformer pt 2, Current Transmit 2 and lightning arrester.
5. a kind of box-type substation that switches main power supply as claimed in claim 1, is characterized in that: described circuit breaker or contactor or on-load switch connect plug-in fuse and the backup protection fuse being connected with high voltage side of transformer successively; Described circuit breaker or contactor or on-load switch end of incoming cables are connected with voltage transformer; Its leading-out terminal is connected with grounding switch.
6. a kind of box-type substation that switches main power supply as claimed in claim 1, is characterized in that: described low-pressure side comprises the low voltage incoming line cabinet being connected with described step down side, and described voltage incoming line cabinet is connected with reactive power compensator and low-pressure line-outgoing cabinet respectively.
7. a kind of box-type substation that switches main power supply as claimed in claim 6, it is characterized in that: described low voltage incoming line cabinet comprises Current Transmit, isolating switch and the circuit breaker or contactor or the on-load switch that connect successively, and the end of incoming cables of described Current Transmit is connected with voltage transformer; Described voltage outgoing line cabinet comprises at least 1 group outlet line, comprises current transformer and circuit breaker or contactor or the on-load switch of series connection.
8. a kind of box-type substation that switches main power supply as claimed in claim 6, is characterized in that: shunt capacitance group or Reactor banks or bank of filters that described low-voltage reactive compensator capable comprises circuit breaker or contactor or on-load switch, is connected with circuit breaker or contactor or on-load switch.
CN201420312983.8U 2014-06-12 2014-06-12 A kind of box-type substation that switches main power supply Expired - Fee Related CN203933147U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420312983.8U CN203933147U (en) 2014-06-12 2014-06-12 A kind of box-type substation that switches main power supply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420312983.8U CN203933147U (en) 2014-06-12 2014-06-12 A kind of box-type substation that switches main power supply

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110994410A (en) * 2019-12-31 2020-04-10 国网北京市电力公司 Mobile box type transformer substation system
CN111196201A (en) * 2019-12-31 2020-05-26 国网北京市电力公司 Mobile box transformer substation vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110994410A (en) * 2019-12-31 2020-04-10 国网北京市电力公司 Mobile box type transformer substation system
CN111196201A (en) * 2019-12-31 2020-05-26 国网北京市电力公司 Mobile box transformer substation vehicle

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20170527

Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Co-patentee after: China Electric Prime Technology Co., Ltd.

Patentee after: State Grid Corporation of China

Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing

Co-patentee before: State Grid Smart Grid Institute

Patentee before: State Grid Corporation of China

Co-patentee before: China Electric Prime Technology Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141105

Termination date: 20190612

CF01 Termination of patent right due to non-payment of annual fee