CN207650286U - It stands with change high-low pressure same period line loss measuring equipment - Google Patents

Abstract

The utility model provides a kind of station change high-low pressure same period line loss measuring equipment.The station becomes high-low pressure same period line loss measuring equipment：Breaker, high-tension current inductor and low-voltage current mutual inductor.Wherein, it is sequentially connected electrically between breaker, high-tension current inductor, station local coordinate frame and low-voltage current mutual inductor.The utility model can improve the accuracy of station local coordinate frame same period line loss metering, realize the comprehensive management of same period line loss.

Description

It stands with change high-low pressure same period line loss measuring equipment

Technical field

The utility model is related to electric system more particularly to a kind of station change high-low pressure same period line loss measuring equipments.

Background technology

Line loss per unit is a comprehensive core technology index of electric system, can be used for examining Operation of Electric Systems Economy.Therefore, reinforce strategic task and the system engineering that Controlling line loss is electric system.Controlling line loss is although intricate, But influencing the principal element of line loss per unit can be sorted out according to following five aspects, i.e.,：Metering and line loss management in four divisions, electricity Net and operational management, marketing management, the statistics and analysis of INDEX MANAGEMENT and Controlling line loss system.

Currently, both at home and abroad having focused largely on the method for the critical point at distribution transforming station setting into and out of line side, it is limited to station change The depressor mode of connection and station local coordinate frame purposes, Controlling line loss research into and out of line energy metering difference as station mostly to use Transformer energy metering data.But same period line loss deviation is larger obtained by the metering method, it is difficult to play same period Controlling line loss comprehensively Purpose.

Utility model content

The utility model provides a kind of station change high-low pressure same period line loss measuring equipment, to improve station local coordinate frame same period line The accuracy of metering is damaged, realizes the comprehensive management of same period line loss.

The utility model first aspect provides a kind of station change high-low pressure same period line loss measuring equipment, station change height Pressure same period line loss measuring equipment include：

Breaker, high-tension current inductor and low-voltage current mutual inductor, wherein the breaker, the high-tension current are mutual It is sequentially connected electrically between sensor, the station local coordinate frame and the low-voltage current mutual inductor.

Due to installing high-tension current inductor additional in the high-pressure side of station local coordinate frame, installed additional in the low-pressure side of station local coordinate frame low Voltage current transformer, to realize the electric quantity acquisition of station local coordinate frame high and low pressure side, and then can be according to the electricity of high and low pressure side Difference obtains same period line loss, to improve the accuracy of station local coordinate frame same period line loss metering, realizes the comprehensive management of same period line loss.

In a kind of possible embodiment, above-mentioned station is with becoming in high-low pressure same period line loss measuring equipment, the high-tension current The number of mutual inductor is 2, and the number of the low-voltage current mutual inductor is 3.

In a kind of possible embodiment, above-mentioned electrical connection can be any one or more in following connection type：

By cable connection and pass through branch's row's connection etc..

In a kind of possible embodiment, the station becomes high-low pressure same period line loss measuring equipment and further includes：Attachment is installed. Wherein, the breaker and the low-voltage current mutual inductor are electrically connected with installation attachment respectively.

In a kind of possible embodiment, for 6~12kV electric system, the breaker is handcart type breaker, institute Stating installing component includes：

Earthing switch is electrically connected with the high-tension current inductor；

Main busbar is electrically connected with the breaker by branch row.

In a kind of possible embodiment, the installing component further includes：

First secondary inserting piece, the breaker transmit a signal to microcomputer protecting device by first secondary inserting piece, The microcomputer protecting device is used for the remote monitoring of the breaker.

In a kind of possible embodiment, for 35kV electric system, the breaker is handcart type breaker or fixation Formula breaker, the installing component include：

Second secondary plug-in unit, the breaker transmit a signal to protection screen, the guarantor by the second secondary plug-in unit Remote monitoring of the shield screen for the breaker.

The utility model second aspect provides a kind of system becoming high-low pressure same period line loss measuring equipment comprising station, described It stands and becomes the metering of high-low pressure same period line loss with change high-low pressure same period line loss measuring equipment into such as first aspect any one of them station Equipment.

In a kind of possible embodiment, the system also includes：

Switchgear becomes high-low pressure same period line loss measuring equipment for placing the station.

In a kind of possible embodiment, the switchgear includes：

Contact of breaker box mounting plate, the contact box for installing the breaker are provided with stationary contact on the contact box Head；

Current transformer mounting plate, for installing the low-voltage current mutual inductor and the high-tension current inductor.

Station provided by the utility model passes through the high pressure in station local coordinate frame with high-low pressure same period line loss measuring equipment is become Side installs high-tension current inductor additional, installs low-voltage current mutual inductor additional in the low-pressure side of station local coordinate frame, realizes that station local coordinate frame is high The electric quantity acquisition of low-pressure side, and then same period line loss can be obtained according to the electricity difference of high and low pressure side, it is same to improve station local coordinate frame The accuracy of phase line loss metering, realizes the comprehensive management of same period line loss.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, other drawings may also be obtained based on these drawings.

Fig. 1 is live station on-load switch formal dress structural schematic diagram；

Fig. 2 is live station on-load switch side assembling structure schematic diagram；

Fig. 3 is the combining structure schematic diagram of live station on-load switch formal dress and dry-type transformer；

Fig. 4 is the structural representation that the station that one embodiment of the utility model provides becomes high-low pressure same period line loss measuring equipment Figure；

Fig. 5 is the system for becoming high-low pressure same period line loss measuring equipment comprising station that one embodiment of the utility model provides External structure schematic diagram；

Fig. 6 is the system for becoming high-low pressure same period line loss measuring equipment comprising station that one embodiment of the utility model provides Internal structure schematic diagram；

Fig. 7 is the system for becoming high-low pressure same period line loss measuring equipment comprising station that one embodiment of the utility model provides Partitioned organization schematic diagram；

Fig. 8 is another live station on-load switch structural schematic diagram；

Fig. 9 is the structural representation that the station that another embodiment of the utility model provides becomes high-low pressure same period line loss measuring equipment Figure.

Reference sign：

100,200 and 300：On-load switch 400：Station local coordinate frame；

10：It stands with change high-low pressure same period line loss measuring equipment 11,161：Breaker

12：High-tension current inductor； 13：Low-voltage current mutual inductor

14：Station local coordinate frame 9,15：Earthing switch

16：Main busbar 17：Branch row 20：Switchgear

A：Bus-bar room A B：Handcart (breaker) room

C：Cable vault D：Relay control room

1：Release of pressure plate 2：Back side panel 3：Top set arranges

4：Wall bushing 5：Insulation column 101：Cable

111：Arrester 121：Cable bearer 131：Contact of breaker box mounting plate

141：Front side board 151：Secondary insert row 171：Vacuum bubbles

18：Breaker chamber partition board 19：Earthing switch transmission shaft

201：Cable vault's backplate 21：Bottom plate

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

The specification of the utility model embodiment, claims and term " first " in above-mentioned attached drawing and " second " etc. It is for distinguishing similar object, without being used to describe specific sequence or precedence.It should be appreciated that the number used in this way According to can be interchanged in the appropriate case, so as to the embodiments of the present invention described herein can in addition to illustrating herein or Sequence other than those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover It includes to be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment to cover non-exclusive Those of clearly list step or unit, but may include not listing clearly or for these processes, method, product Or the other steps or unit that equipment is intrinsic.

In the description of the present invention, it should be understood that the orientation of the instructions such as term "lower", "upper", "left", "right" Or position relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification is retouched It states, does not indicate or imply the indicated device or element must have a particular orientation, with specific azimuth configuration and operation, It is thus impossible to be construed as a limitation of the present invention.

On-load switch is a kind of device for switching between breaker and disconnecting switch.On-load switch has simple Arc-control device can cut off rated load current and certain overload current, but cannot cut off short circuit current.According to using voltage, On-load switch can be divided into high voltage load switch and low voltage switch.

Breaker is the electric current for referring to close, carry and cut-off under normal loop condition and can close, when defined Interior carrying and the switching device for cut-offfing the electric current under abnormal loop condition.Breaker is divided into high-voltage circuitbreaker by its use scope With low-voltage circuit breaker, high-low pressure identification of boundaries is relatively fuzzyyer, and 3kV or more is generally known as high-voltage circuitbreaker.Breaker presses it Degree of flexibility is divided into handcart type breaker and fixed breaker.

Breaker can be used to distribute electric energy, infrequently start asynchronous motor, to implementations such as power circuit and motor Protection, when serious overload or short circuit and the failures such as under-voltage occurs in they can automatic shutdown circuit, function is equivalent to molten The combination that device formula of breaking switchs and crosses underheat relay etc..And parts need not be generally changed after disjunction fault current.

Primary side high current is converted into secondary side low current to measure by current transformer according to electromagnetic induction principle Instrument.Current transformer is made of the iron core and winding being closed.Its first side winding the number of turns is seldom, and string is measured in needs In the circuit of electric current, therefore it often has whole electric currents of circuit to flow through, and secondary winding turn ratio is more, is serially connected in measuring instrumentss In protective loop, at work, its secondary circuit is to be closed always to current transformer, therefore, measuring instrumentss and protection The impedance very little of circuit in series coil, the close short circuit of working condition of current transformer.

Station local coordinate frame, the decompression for substation, power station itself electricity consumption become electric appliance.

Switching Station is that all-metal is closed, can be in the 10kV voltage class switch cabinet combination below of outdoor operation.

Power distribution room, voltage class is in 35kV grades hereinafter, inside is equipped with switch, current transformer, capacitor and phase The protection device of pass.

Electric substation refers generally to voltage class in 110kV step-down substations below.

Substation：The boosting of various voltage class, step-down substation.

In the prior art, the protection of station local coordinate frame is protected for on-load switch fuse.For example, Fig. 1 is scene It stands and uses on-load switch formal dress structural schematic diagram；Fig. 2 is live station on-load switch side assembling structure schematic diagram；Fig. 3 is that scene station is used The combining structure schematic diagram of on-load switch formal dress and transformer.With reference to figure 1, Fig. 2 and Fig. 3, it is known that, on-load switch 100, load are opened Pass 200 and on-load switch 300 occupy very large area in total.Wherein, transformer is the circle of dotted line for being identified as " 400 " Enclose inside points, the merely illustrative explanation of data in each figure.In this case, when needing to measure same period line loss, since area is limited, It will cause the current transformer for measuring same period line loss that can not install additional, therefore, it is impossible to realize the metering of same period line loss.

Based on the above issues, the utility model provides a kind of station change high-low pressure same period line loss measuring equipment, it is intended to pass through The metering of same period line loss is realized in station provided by the utility model with change high-low pressure same period line loss measuring equipment, and improves station transformation The accuracy of the same period line loss metering of device, realizes the comprehensive management of same period line loss.Certainly, the station involved by the utility model becomes High-low pressure same period line loss measuring equipment is applied to include but not limited to the application fields such as electric system.Wherein, electric system is specific Can be above-mentioned Switching Station, power distribution room, electric substation and substation, etc..

The technical solution of the utility model is described in detail with specifically embodiment below.These are specific below Embodiment can be combined with each other, and explanation may be not repeated in some embodiments for same or analogous concept or process.

Embodiment

Fig. 4 is the structural representation that the station that one embodiment of the utility model provides becomes high-low pressure same period line loss measuring equipment Figure.

As shown in figure 4, the utility model embodiment provides a kind of station change high-low pressure same period line loss measuring equipment, which uses Becoming high-low pressure same period line loss measuring equipment 10 includes：Breaker 11, high-tension current inductor 12 and low-voltage current mutual inductor 13.Its In, it is sequentially connected electrically between breaker 11, high-tension current inductor 12, station local coordinate frame 14 and low-voltage current mutual inductor 13.

In Fig. 4, the number of high-tension current inductor 12 is 2, and the number of low-voltage current mutual inductor 13 is 3, but this practicality is new Type is not limited system, here only a kind of concrete implementation mode of example shown in Fig. 4.

When calculating same period line loss, the electricity of the on high-tension side electricity and low-pressure side of station local coordinate frame 14 is measured respectively, so Afterwards by high-pressure side and low-pressure side electricity difference between the two, the no-load loss of station local coordinate frame 14, obtained remainder are compared As same period line loss.It measures on high-tension side electricity and the electricity of low-pressure side, needs respectively through high-tension current inductor 12 and low High current is become low current by voltage current transformer 13, it is, needing to install high-voltage electricity additional in the high-pressure side of station local coordinate frame 14 Current transformer 12 installs low-voltage current mutual inductor 13 additional in the low-pressure side of station local coordinate frame 14.

The embodiment, by installing high-tension current inductor additional in the high-pressure side of station local coordinate frame, in the low of station local coordinate frame It presses side to install low-voltage current mutual inductor additional, realizes the electric quantity acquisition of station local coordinate frame high and low pressure side, and then can be according to high and low pressure side Electricity difference obtains same period line loss, to improve the accuracy of station local coordinate frame same period line loss metering, realizes the comprehensive of same period line loss Management.

In the utility model any embodiment, if without specified otherwise, electrical connection can be specially in following connection type It is any one or more：Connection is arranged by cable connection and by branch.That is, electrical connection can be to pass through cable connection；Alternatively, Electrical connection can be to arrange to connect by branch；Alternatively, electrical connection can be by cable and branch's row's connection.For example, breaker 11 pass through cable connection with high-tension current inductor 12.

On the basis of the above, standing can also include with change high-low pressure same period line loss measuring equipment 10：Installation attachment (does not show Go out).Breaker 11 and low-voltage current mutual inductor 13 are electrically connected with installation attachment respectively.Hereinafter, distinguish 6~12kV electric system and Installation attachment is explained in 35kV electric system.

For 6~12kV electric system, breaker 11 is handcart type breaker.Still referring to FIG. 4, in the electric system, peace Filling component includes：Earthing switch 15 and main busbar 16.Wherein：

Earthing switch 15 is electrically connected with high-tension current inductor 12.

Main busbar 16 is electrically connected with breaker 11 by branch row 17.

Optionally, installing component can also include：First secondary inserting piece, secondary inserting piece 151 as shown in FIG. 6.Breaker 11 transmit a signal to microcomputer protecting device (not shown) by first secondary inserting piece.The microcomputer protecting device can be used for open circuit The remote monitoring of device 11.

For 35kV electric system, breaker 11 is handcart type breaker or fixed breaker.At this point, installing component can To include：Second secondary plug-in unit (not shown).Breaker 11 transmits a signal to protection screen by the second secondary plug-in unit and (does not show Go out).Protection screen is used for the remote monitoring of breaker 11.

It should be noted that in the first secondary inserting piece and second secondary plug-in unit " first " and " second " be only used for differentiation 6~ Secondary inserting piece in 12kV electric system and 35kV electric system.

The utility model also provides a kind of system becoming high-low pressure same period line loss measuring equipment comprising station.The station is with getting higher Low pressure same period line loss measuring equipment is that the station as described in any of the above-described embodiment becomes high-low pressure same period line loss measuring equipment.

Next, to being explained with the system for becoming high-low pressure same period line loss measuring equipment comprising station.Here, with electricity Illustrate for Force system.

Fig. 5 is the system for becoming high-low pressure same period line loss measuring equipment comprising station that one embodiment of the utility model provides External structure schematic diagram；Fig. 6 becomes high-low pressure same period line loss measuring equipment for what one embodiment of the utility model provided comprising station System internal structure schematic diagram；Fig. 7 becomes high-low pressure same period line loss for what one embodiment of the utility model provided comprising station The partitioned organization schematic diagram of the system of measuring equipment.

With reference to figure 5, Fig. 6 and Fig. 7, the system that should become high-low pressure same period line loss measuring equipment comprising station further includes：Switch Cabinet 20.The switchgear 20 is for placement station change high-low pressure same period line loss measuring equipment 10.As shown in fig. 7, the switchgear 20 can It is further broken into bus-bar room A, handcart (breaker) room B, cable vault C and relay control room D.Wherein, bus-bar room A, handcart The concrete meaning of (breaker) room B, cable vault C and relay control room D can refer to the prior art, and details are not described herein again.

As shown in fig. 6, the switchgear 20 includes：Contact of breaker box mounting plate 131 and current transformer mounting plate (do not show Go out).Wherein：

Contact of breaker box mounting plate 131, the contact box 7 for installing breaker 161.It is provided on the contact box 7 quiet Contact 6.

Current transformer mounting plate, for installing low-voltage current mutual inductor and high-tension current inductor.Here, low-tension current Mutual inductor and high-tension current inductor unifying identifier are current transformer 8.

Optionally, switchgear 20 can also include：Release of pressure plate 1, back side panel 2, top set row 3, wall bushing 4, insulation branch Column 5, earthing switch 9, cable 101, arrester 111, cable bearer 121, front side board 141, vacuum bubbles 171, breaker chamber partition board 18, earthing switch transmission shaft 19, cable vault's backplate 201 and bottom plate 21 etc..

More than, electric components mainly distribute, transmit electric energy, and parts form phase for installing holding electrical element To separate space.

The station is with high-low pressure same period line loss measuring equipment is become, by mutual in the high-pressure side of station local coordinate frame installation high-tension current Sensor installs low-voltage current mutual inductor additional in the low-pressure side of station local coordinate frame, realizes the electric quantity acquisition of station local coordinate frame high and low pressure side, And then same period line loss can be obtained according to the electricity difference of high and low pressure side, to improve the accurate of station local coordinate frame same period line loss metering Degree realizes the comprehensive management of same period line loss.

Using

When being disposed with on-load switch at the scene, it can be transformed according to the utility model, so that improved Device further realizes the metering of the same period line loss on the basis of protecting station local coordinate frame.

Example one, for structure shown in Fig. 3, transformation process is as follows：

On-load switch 300, arrester (not shown) and branch's busbar (not shown) are removed in operation one；

Operation two increases contact of breaker box mounting plate, contact box, static contact, breaker, high-tension current inductor, low Voltage current transformer, earthing switch, microcomputer protecting device；

Operation three replaces relay control room door-plate, replaces handcart (breaker) room door-plate, cable vault's door-plate；

Operation four increases handcart (breaker) room sealing plate, cable vault's sealing plate, current transformer mounting plate；

Operation five, inferior division row on live processing and fabricating breaker increase secondary inserting piece, secondary latching member etc..

By aforesaid operations, on-load switch in switchgear is changed to breaker.

Example two, for structure shown in Fig. 8 (35kV on-load switches), wherein Fig. 8 is another live station on-load switch Structural schematic diagram, transformation process are as follows：

Different according to onsite application on-load switch mounting means, 35kV on-load switches, which are changed to breaker, fixed open circuit Point of device and handcart type breaker.

The original on-load switch in scene is removed in operation one；

Operation two installs handcart type breaker or fixed breaker additional, and increase secondary again according to live existence conditions Newly-increased circuit breaker position and its signal are led to protection screen by secondary inserting piece, realize remote monitoring and its division, provide by plug-in unit Processing safety.After transformation as shown in Figure 9.The Fig. 9 is that the station change high-low pressure that another embodiment of the utility model provides is same The structural schematic diagram of phase line loss measuring equipment.

As above, if without specified otherwise, the merely illustrative explanation of number in each figure for indicating size.

Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of station change high-low pressure same period line loss measuring equipment, which is characterized in that station change high-low pressure same period line loss meter Measuring equipment includes：Breaker, high-tension current inductor and low-voltage current mutual inductor, wherein the breaker, the high-tension current It is sequentially connected electrically between mutual inductor, station local coordinate frame and the low-voltage current mutual inductor.

2. station according to claim 1 change high-low pressure same period line loss measuring equipment, which is characterized in that the high-tension current The number of mutual inductor is 2, and the number of the low-voltage current mutual inductor is 3.

3. station according to claim 1 change high-low pressure same period line loss measuring equipment, which is characterized in that described to electrically connect as It is any one or more in following connection type：

Connection is arranged by cable connection and by branch.

4. station according to any one of claim 1 to 3 change high-low pressure same period line loss measuring equipment, which is characterized in that The station becomes high-low pressure same period line loss measuring equipment：Installing component；

The breaker and the low-voltage current mutual inductor are electrically connected with installing component respectively.

5. station according to claim 4 change high-low pressure same period line loss measuring equipment, which is characterized in that for 6~12kV Electric system, the breaker are handcart type breaker, and the installing component includes：

Earthing switch is electrically connected with the high-tension current inductor；

Main busbar is electrically connected with the breaker by branch row.

6. station according to claim 5 change high-low pressure same period line loss measuring equipment, which is characterized in that the installing component Further include：

First secondary inserting piece, the breaker transmits a signal to microcomputer protecting device by first secondary inserting piece, described Microcomputer protecting device is used for the remote monitoring of the breaker.

7. station according to claim 4 change high-low pressure same period line loss measuring equipment, which is characterized in that for 35kV electric power System, the breaker are handcart type breaker or fixed breaker, and the installing component includes：

Second secondary plug-in unit, the breaker transmit a signal to protection screen, the protection screen by the second secondary plug-in unit Remote monitoring for the breaker.

8. a kind of including the station system for becoming high-low pressure same period line loss measuring equipment, which is characterized in that the station, which is used, becomes high-low pressure Same period line loss measuring equipment is that the station as described in any one of claim 1 to 7 becomes high-low pressure same period line loss measuring equipment.

9. system according to claim 8, which is characterized in that the system also includes：

Switchgear becomes high-low pressure same period line loss measuring equipment for placing the station.

10. system according to claim 9, which is characterized in that the switchgear includes：

Contact of breaker box mounting plate, the contact box for installing the breaker are provided with static contact on the contact box；

Current transformer mounting plate, for installing the low-voltage current mutual inductor and the high-tension current inductor.