Utility model content
In view of this, the purpose of this utility model is the high resistance loop in open a kind of transformer station, and to solve the problem of high resistance loop poor seismic behavior in prior art, specific embodiments is as follows:
A high resistance loop in transformer station, comprising:
The electric equipment sleeve pipe, lightning arrester, voltage transformer and the high resistance sleeve pipe that are set up in parallel;
Between described lightning arrester, voltage transformer and high resistance sleeve pipe, connect by the pipe bus that is arranged on top;
Described electric equipment sleeve pipe, by being arranged on the flexible conductor at top, is connected with the end of the extended described pipe bus in described lightning arrester top.
Preferably, described electric equipment sleeve pipe is:
Gas insulated combined electric appliance equipment sleeve pipe, or half gas insulated combined electric appliance equipment sleeve pipe.
Preferably,
Between described lightning arrester and described pipe bus, adopt fixing gold utensil to be connected;
Between described voltage transformer and described pipe bus, adopt slip gold utensil to be connected.
Preferably,
Described high resistance sleeve pipe, by flexible connection fitting, is realized and being connected with described pipe bus in the mode being flexible coupling.
Preferably,
The flexible conductor that connects the end of described electric equipment sleeve pipe and described pipe bus, the wire that is JLHN58K-1600 by four models forms jointly;
Wherein, described flexible conductor is by the mode being flexible coupling, and the end of the described pipe bus extending with described electric equipment sleeve pipe and described lightning arrester top is respectively realized and being connected.
Preferably,
Between described electric equipment sleeve pipe and described lightning arrester, the mode connecing with T by described flexible conductor realizes and being flexible coupling.
The application discloses the high resistance loop in a kind of transformer station, and described high resistance loop is made up of electric equipment sleeve pipe, lightning arrester, voltage transformer and high resistance sleeve pipe, and these four groups of equipment are set up in parallel.And, between described lightning arrester, voltage transformer and high resistance sleeve pipe, connecting by the pipe bus that is arranged on top, described electric equipment sleeve pipe, by being arranged on the flexible conductor at top, is connected with the end of the extended described pipe bus in described lightning arrester top.
The disclosed high resistance of the application loop; with respect to high resistance of the prior art loop; no longer be provided with earthed switch and supporting insulator; but utilize lightning arrester and voltage transformer stay pipe bus; thereby reduce the quantity that builds the equipment in high resistance loop; and longitudinal size reduces, in meeting high resistance loop overvoltage protection performance demand, improve anti-seismic performance.
Further, because in the application, disclosed high resistance loop is with respect to prior art, longitudinal size reduces, and corresponding floor space reduces, and has reduced the investment to soil; In addition, owing to having reduced the quantity of equipment, also reduce accordingly to the investment of equipment in the disclosed high resistance of the application loop.Therefore, in the process of construction of transformer station, adopt the disclosed high resistance of the application loop effectively to reduce costs, reduce investment, and range of application is wider.For example, send in engineering at Wan electricity Dong, the existing high resistance loop using comprises nine groups of equipment that are set up in parallel, through data analysis, adopt the application disclosed scheme, 3 groups of supporting insulators, 1 group of lightning arrester and 1 group of earthed switch can be saved in every group of high resistance loop, correspondingly save approximately 5,800,000 yuan of equipment investments, for Wan Nan transformer station, can save and take up an area approximately 1.49 hectares.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out to clear, complete description, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, 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 utility model protection.
In order to solve the problem of the existing poor seismic behavior in high resistance of the prior art loop, the application discloses the high resistance loop in a kind of transformer station.
The structural representation in high resistance loop shown in Figure 2, the high resistance loop in the disclosed transformer station of the application comprises: electric equipment sleeve pipe 11, lightning arrester 12, voltage transformer 13 and high resistance sleeve pipe 14.
Wherein, described electric equipment sleeve pipe 11, lightning arrester 12, voltage transformer 13 and high resistance sleeve pipe 14 are set up in parallel.
And, between described lightning arrester 12, voltage transformer 13 and high resistance sleeve pipe 14, connect by the pipe bus 15 that is arranged on top;
Described electric equipment sleeve pipe 11, by being arranged on the flexible conductor 16 at top, is connected with the end of the extended described pipe bus of described lightning arrester 12.
The application discloses the high resistance loop in a kind of transformer station, and described high resistance loop is made up of electric equipment sleeve pipe, lightning arrester, voltage transformer and high resistance sleeve pipe, and these four groups of equipment are set up in parallel.And, between described lightning arrester, voltage transformer and high resistance sleeve pipe, connecting by the pipe bus that is arranged on top, described electric equipment sleeve pipe, by being arranged on the flexible conductor at top, is connected with the end of the extended described pipe bus in described lightning arrester top.
The disclosed high resistance of the application loop; with respect to high resistance of the prior art loop; no longer be provided with earthed switch and supporting insulator; but utilize lightning arrester and voltage transformer stay pipe bus; thereby reduce the quantity that builds the equipment in high resistance loop; and the longitudinal size in described high resistance loop reduces, in meeting high resistance loop overvoltage protection performance demand, improve anti-seismic performance.
Further, because in the application, disclosed high resistance loop is with respect to prior art, longitudinal size reduces, and corresponding floor space reduces, and has reduced the investment to soil; In addition, owing to having reduced the quantity of equipment, also reduce accordingly to the investment of equipment in the disclosed high resistance of the application loop.Therefore, in the process of construction of transformer station, adopt the disclosed high resistance of the application loop effectively to reduce costs, reduce investment, and range of application is wider.For example, send in engineering at Wan electricity Dong, the existing high resistance loop using comprises nine groups of equipment that are set up in parallel, through data analysis, adopt the application disclosed scheme, 3 groups of supporting insulators, 1 group of lightning arrester and 1 group of earthed switch can be saved in every group of high resistance loop, correspondingly save approximately 5,800,000 yuan of equipment investments, for Wan Nan transformer station, can save and take up an area approximately 1.49 hectares.
Wherein, in the disclosed high resistance of the application loop, described electric equipment sleeve pipe 11 is: gas insulated combined electric appliance equipment (Gas Insulated Switchgear, GIS) sleeve pipe, or half gas insulated combined electric appliance equipment (hypid gas insulated switchgear, HGIS) sleeve pipe.For example, in ultra-high voltage transformer station, in 1000kV high resistance loop, conventionally adopt 1000kV GIS sleeve pipe.
Further, between described lightning arrester 12 and described pipe bus 15, adopt fixing gold utensil to be connected; Between described voltage transformer 13 and described pipe bus 15, adopt slip gold utensil to be connected.
When pipe bus 15 connection in high resistance loop, skid off for fear of pipe bus 15, need to have any to be set to be fixedly connected with, and be fixedly connected with, to be in the requirement of tolerance aspect higher.Because the intensity of lightning arrester 12 is generally higher than described voltage transformer 13, therefore, for ensureing fail safe and reasonability, conventionally between lightning arrester 12 and pipe bus 15, adopt fixing gold utensil to be connected, and adopt slip gold utensil to be connected between voltage transformer 13 and pipe bus 15.
Further, described high resistance sleeve pipe 14, by flexible connection fitting, is realized and being connected with described pipe bus 15 in the mode being flexible coupling.Wherein, described flexible connection fitting can be copper pigtail, certainly, can be also the flexible connection fitting of other kinds, and the application is not construed as limiting this.
The disclosed high resistance of the application loop, adopts the mode being flexible coupling, and has realized being connected between described high resistance sleeve pipe 14 and described pipe bus 15.Due to the mode being flexible coupling, the active force to arrangement terminal can reduce earthquake time, thus improve the anti-seismic performance in whole high resistance loop.
Further, connect the flexible conductor 16 of the end of described electric equipment sleeve pipe 11 and described pipe bus, the wire that is JLHN58K-1600 by four models forms jointly, and the diameter of the wire that common described model is JLHN58K-1600 is 70mm.
Wherein, described flexible conductor is by the mode being flexible coupling, and the end of the described pipe bus 15 extending with the top of described electric equipment sleeve pipe 11 and described lightning arrester 12 is respectively realized and being connected.
Between described electric equipment sleeve pipe 11 and described lightning arrester 12, adopt the mode of flexible conductor to connect, the active force of the terminal to these two equipment can reduce earthquake equally time, improves the anti-seismic performance in whole high resistance loop.Meanwhile, for the connection that makes described electric equipment sleeve pipe 11 and described lightning arrester 12 more closely attractive in appearance, construct conveniently, conventionally select by four JLHN58K-1600 the flexible conductor that the wire that diameter is 70mm forms.Certainly, in actual demand, also can adopt other forms of flexible conductor, the application does not limit this.
Further, between described electric equipment sleeve pipe 11 and described lightning arrester 12, the mode connecing with T by described flexible conductor 15 realizes and being flexible coupling.
High resistance loop in the disclosed a kind of transformer station of the application, the mode that adopts lightning arrester, voltage transformer and high resistance sleeve pipe to support pipe bus, supporting insulator and earthed switch in prior art are cancelled, thereby reduce the number of devices in high resistance loop, shorten the longitudinal size in high resistance loop, thereby reduce the destruction of seismic force to each equipment in high resistance loop, improved the overall anti-seismic performance in whole high resistance loop.Meanwhile, the utility model, owing to having optimized equipment setting, has also correspondingly been saved floor space and equipment investment.
In connected mode, between electric equipment sleeve pipe in described high resistance loop and described lightning arrester, be connected by the flexible conductor realization that is arranged on top, between described lightning arrester and pipe bus, adopt fixing gold utensil to be connected, between described voltage transformer and pipe bus, adopt slip gold utensil to be connected.The active force of the terminal to these two equipment when this connected mode can reduce earthquake, further improves the anti-seismic performance in whole high resistance loop.
In addition, the high resistance loop in the application in disclosed transformer station, has cancelled earthed switch.In actual applications, transmission line circuit side in transformer station, conventionally be provided with earthed switch, or be grounded in the mode of hanging ground-wire, for example, in the ultra-high voltage transformer station of 1000kV, at 1000kV transmission line circuit place, conventionally be provided with earthed switch, thereby even cancelled earthed switch in the disclosed high resistance of the application loop, also can not affect the fail safe in described high resistance loop.
Further, the high resistance loop in the disclosed transformer station of the application can also comprise optional equipment, and described optional equipment is set up in parallel between described electric equipment sleeve pipe, lightning arrester, voltage transformer or high resistance sleeve pipe.
The area taking place frequently at some thunder and lightning; in order to strengthen the protective capability to equipment; make it avoid being subject to superpotential harm; two or more lightning arresters is set; in this case; described optional equipment is additional lightning arrester, thereby in described high resistance loop, comprises the electric equipment sleeve pipe being set up in parallel, two lightning arresters, voltage transformer and high resistance sleeve pipes.
Although increasing after optional equipment, in the disclosed high resistance of the application loop, the quantity of equipment increases, but than prior art, the quantity of equipment is still less, and the longitudinal size of occupation of land is little, thereby the anti-seismic performance that has increased high resistance loop, has reduced floor space and equipment investment.
In high resistance loop, electric equipment sleeve pipe 11 is directly connected with the circuit of transformer station, and lightning arrester 12, voltage transformer 13 and high resistance sleeve pipe 14 these remaining equipment, connect into a loop, is connected in parallel in the circuit of described transformer station.In the time that the circuit in described transformer station is struck by lightning, there is catadioptric in the loop connecting in Lightning Incoming Wave, and produces Lightning Over-voltage in each equipment in high resistance loop.The disclosed high resistance of the application loop, destroys the insulation of equipment for fear of overvoltage, installed lightning arrester, to limit Lightning Over-voltage in described high resistance loop.
And, the anti-seismic performance of each equipment in high resistance loop, its geological process power with each connection device, be connected the factors such as gold utensil, tube connector bus, earthquake intensity and wind speed and have relation, need examine by test the anti-seismic performance in described high resistance loop.Due to setting and the larger-size reason in high resistance loop, the more difficult shock test of carrying out on vibration machine, therefore generally by modeling pattern, realizes overvoltage level to high resistance loop and the check of anti-seismic performance.
First, the overvoltage level in the high resistance loop in the disclosed transformer station of this programme is checked.By to the modeling of high resistance loop; and utilize voltage to check conventional usage and statistic law is carried out computational analysis to the overvoltage level in described high resistance loop; draw the conclusion that adopts the disclosed scheme of the utility model can meet the overvoltage protection requirement of relevant criterion or regulation and stipulation; that is to say; adopt the disclosed high resistance of the application loop, Lightning Incoming Wave can not work the mischief to each equipment.
Secondly, the overall anti-seismic performance in the high resistance loop in the disclosed transformer station of this programme is checked.By Modeling Calculation, determine the disclosed high resistance of the application loop, can meet the requirement of 8 degree earthquake territory engineering application completely, meanwhile, its anti-seismic performance is also far superior to disclosed high resistance loop in prior art.
The disclosed high resistance of the application loop, owing to having the advantage that shock resistance height is good, floor space is few and equipment investment is few, is with a wide range of applications, and can be applied in large quantities of ultra high voltage engineering constructions.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model 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.