CN203707584U - Capacitor loop applied to substation and substation - Google Patents
Capacitor loop applied to substation and substation Download PDFInfo
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- CN203707584U CN203707584U CN201320756518.9U CN201320756518U CN203707584U CN 203707584 U CN203707584 U CN 203707584U CN 201320756518 U CN201320756518 U CN 201320756518U CN 203707584 U CN203707584 U CN 203707584U
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- switch
- load switch
- transformer
- transformer station
- capacitor
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- 239000003990 capacitor Substances 0.000 title claims abstract description 78
- 239000000376 reactant Substances 0.000 claims description 23
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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Abstract
The embodiment of the application provides a capacitor loop applied to a substation and the substation. The capacitor loop comprises an isolating switch, a load switch, a current transformer, a reactor device, a grounding switch, a lightning arrester and a capacitor device which are successively connected; and the isolating switch is connected with the transformer low-voltage side in the substation. According to the capacitor loop, faults of the capacitor loop are reduced, and performance of the capacitor loop is improved.
Description
Technical field
The application relates to power technology field, relates in particular a kind of capacitor loops and transformer station being applied in transformer station.
Background technology
Transformer station is the assembly place of transmission and disttrbution in electric power system, in order to cut off or to connect, to change or to adjust voltage.
The capital equipment of transformer station is transformer, and the low-pressure side of main transformer of transformer substation is mainly drawn the low-pressure reactive compensation equipment that connects, and with the reactive power in compensates electric system, improves quality of voltage, reduces line loss etc.Wherein capacitive reactive power compensation equipment is mainly connected to form by capacitor and series reactor etc., forms capacitor loops at step down side.
In prior art, capacitor loops is mainly connected to form successively by isolating switch, circuit breaker, current transformer, reactant devices, earthed switch, capacitance apparatus, and isolating switch is connected to step down side and forms loop.Circuit breaker is mainly realized the switching of capacitor loops, realizes short-circuit protection and the daily input in loop and cut-offs.
Realizing in process of the present utility model, inventor finds, existing this capacitor loops, and capacitor loops is because system voltage fluctuates, may frequent switching, in frequent switching process, capacitor loops is easy to break down, and affects serviceability.
Utility model content
In view of this, the application provides a kind of capacitor loops and transformer station being applied in transformer station, has solved capacitor loops in prior art and has easily broken down, and affects the technical problem of serviceability.
For achieving the above object, the application provides following technical scheme:
Be applied to the capacitor loops in transformer station, comprise: connected isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning arrester and capacitance apparatus successively;
Described isolating switch is connected with the low-pressure side of three-phase transformer in described transformer station.
Preferably, described isolating switch, described on-load switch and described current transformer are integrated into the box-like electrical equipment H-GIS of complex group type load switch equipment.
Preferably, described transformer station is AC extra high voltage 1000kV transformer station, and described on-load switch is the high voltage load switch of 110kV electric pressure.
Preferably, described capacitance apparatus is made up of Shunt Capacitor Unit, and described reactant devices is made up of series reactor.
A kind of transformer station, the capacitor loops that at least comprises three-phase transformer and be connected with described three-phase transformer low-pressure side;
Described capacitor loops comprises: connected isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning arrester and capacitance apparatus successively;
Described isolating switch is specifically connected with the low-pressure side of described transformer.
Preferably, described isolating switch, described on-load switch and described current transformer are integrated into the box-like electrical equipment H-GIS of complex group type load switch equipment.
Preferably, in described transformer station, step down side is 110kV electric pressure, and described on-load switch is the high voltage load switch of 110kV electric pressure.
Known via above-mentioned technical scheme, compared with prior art, the application provides a kind of capacitor loops and transformer station being applied in transformer station, this capacitor loops is by isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning arrester and capacitance apparatus connect to form successively, on-load switch can be realized repeatedly folding and not affect its break performance, can meet the requirement of loop frequent switching, electric life is high, make capacitor loops be difficult for breaking down, can reduce the workload that detects and safeguard, particularly in the time that transformer station is AC extra high voltage transformer station, capacitor loops needs repeatedly switching, adopt on-load switch, can effectively reduce the generation of capacitor loops fault, improve serviceability.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only the application's embodiment, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
A kind of structural representation that is applied to the embodiment of capacitor loops in transformer station that Fig. 1 provides for the embodiment of the present application;
Three-phase wiring schematic diagram in a kind of capacitor loops being applied in transformer station that Fig. 1 a provides for the embodiment of the present application;
A kind of structural representation that is applied to another embodiment of capacitor loops in transformer station that Fig. 2 provides for the embodiment of the present application;
Sectional drawing in a kind of practical application of capacitor loops being applied in transformer station that Fig. 3 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the application's protection.
As described in background, in prior art, capacitor loops is made up of isolating switch, circuit breaker, current transformer, reactant devices, earthed switch, capacitance apparatus etc., and capacitor loops easily breaks down, and the life-span is shorter.Inventor finds under study for action, and the reason of cause capacitor loops easily to break down, the life-span is shorter is due to voltage fluctuation, and capacitor loops frequent switching causes.And capacitor loops is to be realized the switching of capacitor loops by circuit breaker in prior art; realize short-circuit protection and daily the cut-offfing in loop; inventor further finds under study for action; capacitor breaks down and is mainly caused by circuit breaker; circuit breaker is in the time realizing loop frequent switching; its contact is easily damaged, and electric life is shorter.
Therefore, inventor has changed technology thinking, creationary a kind of capacitor loops being applied in transformer station proposed, this capacitor loops is by isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning arrester and capacitance apparatus connect to form successively, on-load switch can be realized repeatedly folding, break performance is high, can meet the requirement of loop frequent switching, therefore electric life is high, make capacitor loops be difficult for breaking down, can reduce the workload that detects and safeguard, particularly in the time that transformer station is AC extra high voltage transformer station, capacitor loops needs repeatedly switching, adopt on-load switch can meet the requirement of AC extra high voltage transformer station to switch life.
A kind of structural representation that is applied to the capacitor loops in transformer station that Fig. 1 provides for the embodiment of the present application, in conjunction with Fig. 1, described capacitor loops can comprise:
Connected isolating switch 11, on-load switch 12, current transformer 13, reactant devices 14, earthed switch 15, lightning arrester 16 and capacitance apparatus 17 successively.
Wherein, isolating switch 11 connects the low-pressure side of three-phase transformer in described transformer station.
In the present embodiment, the transformer in transformer station is mainly three-phase transformer, and each components and parts in this capacitor loops comprise that isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning-arrest and capacitance apparatus are three phase electric equipment.Three of capacitance apparatus is connected together, thereby forms loop structure.
Isolating switch is connected and specifically makes described isolating switch be connected respectively with the three-phase of three-phase transformer with three-phase transformer low-pressure side.
Therefore, referring to Fig. 1 a, be applied to a kind of three-phase wiring schematic diagram in the capacitor loops in transformer station for what the embodiment of the present application provided, from Fig. 1 a, step down side each be connected with isolating switch 11 respectively mutually, then isolating switch 11 is connected in series on-load switch 12, current transformer 13, reactant devices 14, earthed switch 15, lightning arrester 16 and capacitance apparatus 17 successively, the three-phase of capacitance apparatus 17 connects together, thereby has formed capacitor loops.Fig. 1 is specially the rough schematic view of Fig. 1 a.
On-load switch be a kind ofly can under the overlond running condition of normal circuit condition and regulation, close, carrying and drop-out current and under the abnormal circuit condition of regulation, for example, when short circuit, the switching device of time loaded current in accordance with regulations.It can realize repeatedly folding, and its break performance and can to realize the number of times cut-offfing all very high can meet in transformer station, due to voltage fluctuation, causes capacitor loops to need the requirement of frequent switching, high life.
In the present embodiment, substitute the switching device of circuit breaker as capacitor loops by on-load switch, it can be realized and repeatedly cut-offs and can not impact break performance, long service life, when in transformer station, capacitor loops needs frequent switching due to reasons such as voltage fluctuations, can effectively improve the useful life of capacitor loops, make capacitor loops be difficult for breaking down, and then can reduce the workload that detects and safeguard.
Described in the embodiment of the present application, technical scheme is specially adapted to AC extra high voltage 1000kV(kilovolt) in transformer station, step down side in 1000kV AC extra high voltage transformer station adopts 110kV grade of rated voltage, therefore, this on-load switch, as a kind of possible implementation, is the high voltage load switch equipment of 110kV electric pressure.
In addition, as another embodiment, described isolating switch, on-load switch summation current transformer can be integrated into H-GIS(Hybrid Gas Insulated Switchgea, the box-like electrical equipment of complex group) type load switch equipment, H-GIS type load switch equipment one end is connected with step down side, and the other end connects reactant devices.H-GIS type load switch equipment comprises isolating switch, on-load switch summation current transformer, be an integral device, isolating switch is connected with the first phase line of step down side in transformer station is specifically that this H-GIS type load switch equipment is connected with step down side the first phase line.
Therefore the structural representation of a kind of another embodiment that is applied to the capacitor loops in transformer station providing for the embodiment of the present application as shown in Figure 2.This capacitor loops comprises:
The H-GIS type load switch equipment 21, reactant devices 22, earthed switch 23, lightning arrester 24 and the capacitance apparatus 25 that connect successively.
This H-GIS type load switch equipment 21 is connected with step down side.
In the present embodiment, isolating switch, on-load switch summation current transformer are integrated together, therefore, this H-GIS type load switch equipment is connected with transformer side low-pressure side, it isolating switch comprising is connected with this step down side, H-GIS type load switch equipment is connected with reactant devices, and it current transformer comprising is connected with described reactant devices.。
Fig. 2 is the rough schematic view of capacitor loops, in actual applications, this H-GIS type load switch equipment 21 is connected with step down side, this H-GIS type load switch equipment 21 is connected respectively with the three-phase of three-phase transformer, three of last capacitance apparatus 25 is connected together, and forms loop structure.Adopt H-GIS type load switch equipment, security reliability is high, strong adaptability, and anti-seismic performance is high, is conducive to follow-up maintenance.In the time that transformer station is AC extra high voltage 1000kV transformer station, this H-GIS type load switch equipment is specially the H-GIS type high voltage load switch equipment of 110kV electric pressure.
Wherein, in the capacitor loops providing in the various embodiments described above, capacitance apparatus is mainly made up of Shunt Capacitor Unit, reactant devices is mainly made up of series reactor, in AC extra high voltage 1000kV transformer station, step down side normally configures 4 groups of Shunt Capacitor Unit and 2～4 groups of shunt reactor groups, Shunt Capacitor Unit and shunt reactor pool-size are high, electric current is large, high for the switching device life requirements for loop switching, in the embodiment of the present application, adopt load switch equipment can meet the requirement of large value capacitor group, its break performance is high, can realize repeatedly and cut-offfing.
As shown in Figure 3, for a kind of capacitor loops in the transformer station sectional drawing in actual applications that is applied to providing embodiment illustrated in fig. 2, comprise successively connected H-GIS type load switch equipment 21, reactant devices 22, earthed switch 23, lightning arrester 24 and capacitance apparatus 25.Wherein, between each parts, connect by flexible conductor.
H-GIS type load switch equipment 21 comprises isolating switch, on-load switch summation current transformer, H-GIS type load switch equipment 21 one end are connected with step down side, described isolating switch is connected with described step down side, the other end is connected with reactant devices, and described current transformer is connected with reactant devices.The three-phase of capacitance apparatus connects together, and is connected to capacitor loops thereby form.
H-GIS type load switch equipment 21 one end are connected with step down side, and specifically H-GIS type load switch equipment is connected with the branch bar of the three-phase of step down side respectively.
The embodiment of the present application also provides a kind of transformer station, at least comprises the capacitor loops that three-phase transformer and described three-phase transformer low-pressure side connect;
Described capacitor loops can comprise: connected isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning arrester and capacitance apparatus successively;
Described isolating switch is specifically connected with described three-phase transformer low-pressure side.
Capacitor loops can be referring to described in arbitrary embodiment corresponding to Fig. 1～Fig. 3.
Wherein, concrete can be referring to shown in Fig. 1 a, and Fig. 1 a shows the three-phase wiring schematic diagram that capacitor loops is connected with step down side.Each components and parts in this capacitor loops, comprise that isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning-arrest and capacitance apparatus are three phase electric equipment.Three of capacitance apparatus is connected together, thereby forms capacitor loops.
Wherein, as a kind of possible implementation, isolating switch, described on-load switch and described current transformer can be equipment independently.
And as another kind of possible implementation, isolating switch, on-load switch and current transformer are integrated into the box-like electrical equipment H-GIS of complex group type load switch equipment.
Wherein, the embodiment of the present application in actual applications, mainly be applicable to 1000kV AC extra high voltage transformer station, the electric pressure that in this 1000kV AC extra high voltage transformer station, step down side is 110kV, described on-load switch can be selected the high voltage load switch of 110kV electric pressure.
Certainly transformer station also comprises other necessaries, same as the prior art, does not repeat them here.
The transformer station of the embodiment of the present application, capacitor loops adopts on-load switch as the switching device of realizing switching, its electric life is high, can realize and repeatedly cut-off and do not affect break performance, effectively improve the useful life of capacitor loops, make capacitor loops be difficult for breaking down, and then can reduce the workload that detects and safeguard, and then also just improved transformer station's performance.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
Finally, also it should be noted that, in this article, relational terms such as the first and second grades is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply and between these entities or operation, have the relation of any this reality or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the application.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the case of not departing from the application's spirit or scope, realize in other embodiments.Therefore, the application will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. be applied to the capacitor loops in transformer station, it is characterized in that, comprising: connected isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning arrester and capacitance apparatus successively;
Described isolating switch is connected with the low-pressure side of three-phase transformer in described transformer station.
2. capacitor loops according to claim 1, is characterized in that, described isolating switch, described on-load switch and described current transformer are integrated into the box-like electrical equipment H-GIS of complex group type load switch equipment.
3. capacitor loops according to claim 1 and 2, is characterized in that, described transformer station is AC extra high voltage 1000kV transformer station, and described on-load switch is the high voltage load switch of 110kV electric pressure.
4. capacitor loops according to claim 1, is characterized in that, described capacitance apparatus is made up of Shunt Capacitor Unit, and described reactant devices is made up of series reactor.
5. a transformer station, is characterized in that, the capacitor loops that at least comprises three-phase transformer and be connected with described three-phase transformer low-pressure side;
Described capacitor loops comprises: connected isolating switch, on-load switch, current transformer, reactant devices, earthed switch, lightning arrester and capacitance apparatus successively;
Described isolating switch is specifically connected with the low-pressure side of described transformer.
6. transformer station according to claim 5, is characterized in that, described isolating switch, described on-load switch and described current transformer are integrated into the box-like electrical equipment H-GIS of complex group type load switch equipment.
7. transformer station according to claim 5, is characterized in that, in described transformer station, step down side is 110kV electric pressure, and described on-load switch is the high voltage load switch of 110kV electric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320756518.9U CN203707584U (en) | 2013-11-22 | 2013-11-22 | Capacitor loop applied to substation and substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320756518.9U CN203707584U (en) | 2013-11-22 | 2013-11-22 | Capacitor loop applied to substation and substation |
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| Publication Number | Publication Date |
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| CN203707584U true CN203707584U (en) | 2014-07-09 |
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| CN201320756518.9U Expired - Lifetime CN203707584U (en) | 2013-11-22 | 2013-11-22 | Capacitor loop applied to substation and substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730841A (en) * | 2013-11-22 | 2014-04-16 | 国家电网公司 | Capacitor circuit in transformer substation and transformer substation |
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2013
- 2013-11-22 CN CN201320756518.9U patent/CN203707584U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730841A (en) * | 2013-11-22 | 2014-04-16 | 国家电网公司 | Capacitor circuit in transformer substation and transformer substation |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: CHINA POWER ENGINEERING CONSULTING (Group) Corp. Patentee after: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Patentee after: EAST CHINA ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: NORTHEAST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: Southwest Electric Power Design Institute CO., Ltd. of China Power Engineering Consulting Group Patentee after: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Patentee before: CHINA POWER ENGINEERING CONSULTING Group CORPORATION EAST CHINA ELECTRIC POWER DESIGN INSTITUTE Patentee before: NORTHEAST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Patentee before: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: NORTHWEST ELECTRIC POWER DESIGN INST. OF CHINA POWER ENGINEERING CONSULTING Group Patentee before: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |