CN204793653U - Electric owner of single busbar segmentation structure of working a telephone switchboard with generating line shifts isolator - Google Patents

Abstract

The utility model discloses an electric owner of single busbar segmentation structure of working a telephone switchboard with generating line shifts isolator, two sections generating lines and two circuits including generating line segmentation back parallel arrangement are qualified for the next round of competitions, and two sets of generatrix disconnector, circuit breaker and connecting wire are qualified for the next round of competitions, two sets of generatrix disconnector one end link to each other with two sections generating lines respectively, and the other end links to each other through the one end of two wires with two sets of circuit breakers of being qualified for the next round of competitions respectively, and the other end of two sets of circuit breakers of being qualified for the next round of competitions is qualified for the next round of competitions continuously in two circuits respectively, it is provided with generating line transfer isolator to connect between two connecting wire. The utility model discloses a wiring structure more nimble for the single busbar, reduced circuit breaker, isolator and corresponding connecting wire in the double -bus, reduce cost with arrange the area, and realized the simple switching of generating line and the business turn over wiring method of operation between the line, it will be in the turn(a)round condition of power failure within a definite time to have avoided because of one section busbar fault or overhauld that the circuit that leads to this section generating line to be connected often is qualified for the next round of competitions all.

Description

A kind of sectionalized single busbar connection electrical main connecting wire structure with bus transfer isolating switch

Technical field

The utility model patent relates to a kind of electric power system electrical main connecting wire structure, is specifically related to a kind of sectionalized single busbar connection electrical main connecting wire structure with bus transfer isolating switch.

Background technology

Electrical main connecting wire structure is widely used in power plant and transformer station field, the electrical main connecting wire structure of bus rod is wherein had more to have very important effect in the electric power system application of each stage load, and in prior art bus rod electrical main connecting wire structure conventional be single-trunk segmental wiring and double bus scheme, wherein single-trunk segmental wiring structure is when when one section of busbar fault or maintenance, the loop of this section of bus all will have a power failure between turn(a)round, and it there will be overhead outlet scissors crossing when double loop and enlarging can only with the drawback of the carrying out of two direction equilibrium enlargings, and between its segmentation, need separately to arrange one group of circuit breaker and two groups of isolating switches, cause cost of layout, land used increases, and scissors crossing can cause safety and location problem, and the circuit outlet that when though double-bus electrical main connecting wire structure can overcome single-trunk segmental wiring structure median generatrix fault or overhaul, maintenance bus connects will be interrupted the drawback of power failure, but the layout place of one section of bus is increased again when it is arranged than single-trunk segmental wiring structure, and each loop needs to increase bus isolating switch, construction and maintenance cost all significantly increase, and conversion and control difficulty between various wiring operational mode, easily because Wrong control causes accident.

Utility model content

For the deficiency that prior art exists, the purpose of this utility model be to provide a kind of still can uninterrupted power supply when one section of busbar fault or maintenance, and significantly improve than double bus scheme economic benefit, operational mode switches simple and clear and function is close with flexibility single bus scheme sectionalized single busbar connection electrical main connecting wire structure.

For achieving the above object, the utility model provides following technical scheme: a kind of sectionalized single busbar connection electrical main connecting wire structure with bus transfer isolating switch, comprises bus, bus isolating switch, wire-outgoing breaker, bus transfer isolating switch, connects wire and circuit outlet; The first paragraph bus that bus be arranged in parallel after comprising segmentation and second segment bus, circuit outlet comprises the first line outlet and the second circuit outlet that are parallel to each other, bus isolating switch comprises the first bus isolating switch and the second bus isolating switch, wire-outgoing breaker comprises the first wire-outgoing breaker and the second wire-outgoing breaker, and connection wire comprises the first connection wire and is connected wire with second; First bus isolating switch one end is connected with first paragraph bus, and the other end connects wire by first and is connected with one end of the first wire-outgoing breaker, and the other end of the first wire-outgoing breaker is connected with first line outlet; Second bus isolating switch one end is connected with second segment bus, and the other end connects wire by second and is connected with one end of the second wire-outgoing breaker, and the other end of the second wire-outgoing breaker is connected with the second circuit outlet; Connect between the first connection wire and the second connection wire and be provided with bus transfer isolating switch.

As further improvement of the utility model, between the first wire-outgoing breaker and first line outlet, be provided with the first electronic current mutual inductor, between the second wire-outgoing breaker and the second circuit outlet, be provided with the second electronic current mutual inductor.

As further improvement of the utility model, between the first electronic current mutual inductor and first line outlet, be provided with the first electronic type voltage transformer, between the second electronic current mutual inductor and the second circuit outlet, be provided with the second electronic type voltage transformer.

The utility model has the following advantages: two sections of buses of the single-trunk segmental wiring that the utility model be arranged in parallel make the mutual back brake between two sections of buses become possibility, and the two sections of buses simultaneously be arranged in parallel decrease arrangement areas; Bus transfer isolating switch is added compared to single bus scheme, by back brake mode, add system flexibility, when can realize overhauling, circuit outlet does not have a power failure, bus transfer isolating switch is added compared to double bus scheme, decrease circuit breaker and the isolating switch between circuit breaker two ends and two buses, decrease the isolating switch arrangement space of one group of bus and bus often organized on loop simultaneously, namely relative to double-bus decrease circuit breaker, isolating switch setting be connected wire accordingly, reduce costs and arrangement areas; Coordinate the first bus isolating switch and the second bus isolating switch to achieve two sections of buses and two back into the simple switching of wiring operational mode between outlet by bus transfer isolating switch simultaneously, avoid the situation that single bus scheme mode all will have a power failure because of the circuit outlet causing this section of bus to connect when one section of busbar fault or maintenance between turn(a)round, simultaneously more easy in the conversion of wiring operational mode compared to double bus scheme mode.

Accompanying drawing explanation

Fig. 1 is the structural representation of a kind of sectionalized single busbar connection electrical main connecting wire structure with bus transfer isolating switch of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.

As shown in Figure 1, be a kind of sectionalized single busbar connection electrical main connecting wire structure with bus transfer isolating switch of utility model, comprise bus 1, bus isolating switch 2, wire-outgoing breaker 3, bus transfer isolating switch 4, connect wire 5 and circuit outlet 6; The first paragraph bus 11 that bus 1 is arranged in parallel after comprising segmentation and second segment bus 12, circuit outlet 6 comprises the first line outlet 61 and the second circuit outlet 62 that are parallel to each other, bus isolating switch 2 comprises the first bus isolating switch 21 and the second bus isolating switch 22, wire-outgoing breaker 3 comprises the first wire-outgoing breaker 31 and the second wire-outgoing breaker 32, and connection wire 5 comprises the first connection wire 51 and is connected wire 52 with second; First bus isolating switch 21 one end is connected with first paragraph bus 11, and the other end connects wire 51 by first and is connected with one end of the first wire-outgoing breaker 31, and the other end of the first wire-outgoing breaker 31 is connected with first line outlet 61; Second bus isolating switch one end 22 is connected with second segment bus 12, and the other end connects wire 52 by second and is connected with one end of the second wire-outgoing breaker 32, and the other end of the second wire-outgoing breaker 32 is connected with the second circuit outlet 62; Connect between the first connection wire 51 and the second connection wire 52 and be provided with bus transfer isolating switch 4.By each for the single busbar connection of segmentation section, namely first paragraph bus 11 and second segment bus 12 be arranged in parallel to break through in prior art and limit to the technology of single busbar connection each section of bus " " set up of character patt ern method, make to minimize into the local back brake realized each other between first paragraph bus 11 and second segment bus 12, the first paragraph bus 11 be simultaneously parallel to each other and second segment bus 12 have greatly saved installation space than original " one " font design, the first paragraph bus 11 simultaneously be arranged in parallel and second segment bus 12 avoid the situation of first line outlet 61 and the second circuit 62 scissors crossing, avoid sectionalized single busbar connection " one " word arrangement is can only with the drawback of two direction equilibrium enlargings simultaneously, the mode can arranged across first paragraph bus 11 and second segment bus 12 by first outlet circuit 61 second circuit outlet 62 1 directions is now arranged, again reduce line arrangement to the requirement in space, make overall layout of roads more rationally clear, the utility model by arranging bus transfer isolating switch 4 between first paragraph bus 11 and second segment bus 12, first bus isolating switch 21 and the second bus isolating switch 22 thus achieve two sections of buses that prior art realized by double-bus method to set up and two back into the switching of wiring operational mode between outlet, simultaneously, bus transfer isolating switch 4 is set between single-trunk segmental wiring structure two sectionalized bus, the structure of the first bus isolating switch 21 and the second bus isolating switch 22, make when one section of busbar fault or maintenance, can by two sections of buses and two back into wiring operational mode between outlet switching thus to realize in maintenance process the object that circuit outlet that this section of maintenance bus connect uninterruptedly has a power failure, concrete operational mode and changing method are: the first bus isolating switch 21 closes, bus transfer isolating switch 4 disconnects, second bus isolating switch 22 closes thus realizes the first outlet circuit 61 and first paragraph bus 11 cooperation operation, second outlet circuit 62 and second segment bus 12 coordinate the operational mode run, first bus isolating switch 21 closes, bus transfer isolating switch 4 closes, second bus isolating switch 22 disconnects thus realizes the first outlet circuit 61 and first paragraph bus 11 cooperation operation, and the second outlet circuit 62 and second segment bus 11 coordinate the operational mode run, first bus isolating switch 21 disconnects, bus transfer isolating switch 4 closes, second bus isolating switch 22 closes thus realizes the first outlet circuit 61 and second segment bus 12 cooperation operation, and the second outlet circuit 62 and second segment bus 12 coordinate the operational mode run, the switching that can realize between each operational mode by the closed procedure of twice isolating switch is only needed between these three kinds of operational modes, and to the not requirement of opening and closing sequencing, compared to the necessary first cut-off breaker of double bus scheme structure, then the isolating switch of cut-off breaker adjacent position successively, then open and need four times of operating loop section isolating switch, circuit breaker operations not only significantly to reduce operating procedure, more reduce the serious forgiveness of operation, significantly reduce because of misoperation produce the risk of accident, moreover, bus transfer isolating switch 4 is set between single-trunk segmental wiring structure two sectionalized bus, the structure of the first bus isolating switch 21 and the second bus isolating switch 22 passes through back brake mode compared to single bus scheme, add system flexibility, when can realize overhauling, circuit outlet does not have a power failure, bus transfer isolating switch 4 is added compared to double bus scheme, decrease circuit breaker and the isolating switch between circuit breaker two ends and two buses, decrease the isolating switch arrangement space of one group of bus and bus often organized on loop simultaneously, namely circuit breaker is decreased relative to double-bus, the setting of isolating switch be connected wire accordingly, reduce costs and arrangement areas.

As a kind of embodiment improved, the first electronic current mutual inductor 71 is provided with between first wire-outgoing breaker 31 and first line outlet 61, the second electronic current mutual inductor 72 is provided with between second wire-outgoing breaker 32 and the second circuit outlet 62, big current in primary circuit can be become to be applicable to the small area analysis of secondary device with the second electronic current mutual inductor 72 by the first electronic current mutual inductor 71 according to standard handovers, can the size of electric current at this place of real-time monitoring system, secondary device protected simultaneously and play electrical isolation effect, the instrument transformer of electronic type not only eliminates magnetic saturation, the problem of ferro resonance, there is good in anti-interference performance simultaneously, precision is high, frequency response range is wide, lightweight, coefficient of safety and the high feature of electronics extensibility.

As a kind of embodiment improved, the first electronic type voltage transformer 81 is provided with between first electronic current mutual inductor 71 and first line outlet 61, the second electronic type voltage transformer 82 is provided with between second electronic current mutual inductor 72 and the second circuit outlet 62, high voltage in primary circuit can be become be applicable to the low-voltage of secondary device according to standard handovers, can the size of voltage at this place of real-time monitoring system, secondary device protected simultaneously and play the effect of isolated high voltage and electrician, the instrument transformer of electronic type not only eliminates magnetic saturation, the problem of ferro resonance, there is good in anti-interference performance simultaneously, precision is high, frequency response range is wide, lightweight, coefficient of safety and the high feature of electronics extensibility.

Claims (3)

1., with a sectionalized single busbar connection electrical main connecting wire structure for bus transfer isolating switch, comprise bus (1), bus isolating switch (2), wire-outgoing breaker (3), bus transfer isolating switch (4), connect wire (5) and circuit outlet (6), it is characterized in that: the first paragraph bus (11) be arranged in parallel after described bus (1) comprises segmentation and second segment bus (12), described circuit outlet (6) comprises the first line outlet (61) and the second circuit outlet (62) that are parallel to each other, described bus isolating switch (2) comprises the first bus isolating switch (21) and the second bus isolating switch (22), described wire-outgoing breaker (3) comprises the first wire-outgoing breaker (31) and the second wire-outgoing breaker (32), described connection wire (5) comprises the first connection wire (51) and is connected wire (52) with second, first bus isolating switch (21) one end is connected with first paragraph bus (11), the other end connects wire (51) by first and is connected with one end of the first wire-outgoing breaker (31), and the other end of the first wire-outgoing breaker (31) is connected with first line outlet (61), second bus isolating switch one end (22) is connected with second segment bus (12), the other end connects wire (52) by second and is connected with one end of the second wire-outgoing breaker (32), and the other end of the second wire-outgoing breaker (32) is connected with the second circuit outlet (62), connect between the first connection wire (51) and the second connection wire (52) and be provided with bus transfer isolating switch (4).

2. a kind of sectionalized single busbar connection electrical main connecting wire structure with bus transfer isolating switch according to claim 1, it is characterized in that: between the first wire-outgoing breaker (31) and first line outlet (61), be provided with the first electronic current mutual inductor (71), between the second wire-outgoing breaker (32) and the second circuit outlet (62), be provided with the second electronic current mutual inductor (72).

3. a kind of sectionalized single busbar connection electrical main connecting wire structure with bus transfer isolating switch according to claim 2, it is characterized in that: between the first electronic current mutual inductor (71) and first line outlet (61), be provided with the first electronic type voltage transformer (81), between the second electronic current mutual inductor (72) and the second circuit outlet (62), be provided with the second electronic type voltage transformer (82).