CN110492354B - 35kV bypass bus device of oil field transformer substation and application method thereof - Google Patents
35kV bypass bus device of oil field transformer substation and application method thereof Download PDFInfo
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- CN110492354B CN110492354B CN201910803170.6A CN201910803170A CN110492354B CN 110492354 B CN110492354 B CN 110492354B CN 201910803170 A CN201910803170 A CN 201910803170A CN 110492354 B CN110492354 B CN 110492354B
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000002955 isolation Methods 0.000 claims abstract description 238
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 238000012544 monitoring process Methods 0.000 claims description 33
- 239000012212 insulator Substances 0.000 claims description 18
- 239000002344 surface layer Substances 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims description 5
- 239000011701 zinc Substances 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 230000009977 dual effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009422 external insulation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/01—Frameworks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
- H02B1/22—Layouts for duplicate bus-bar selection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/061—Tubular casings
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- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to the field of oilfield ground engineering construction, in particular to a 35kV bypass bus device of an oilfield transformer substation and an application method thereof, and the purposes of uninterrupted power supply and power transfer of double power supplies of transformer substation incoming and outgoing line faults or normal overhauling are achieved. The combination of the 35kV side bus isolation interval and the tubular bus replaces a conventional bypass bus frame and an isolating switch, simplifies the structural composition, solves the problems of large occupied area of the conventional bypass bus frame and inconvenient operation of the isolating switch, installs the dense bypass bus device in a built standby area of an oilfield 35kV transformer substation, does not need an extension site, and can be extended according to the actual quantity of 35kV inlet and outlet main buses. The 35kV side-by-side busbar isolation interval factory preassembled production is carried out on site for assembly, the steel bracket is installed, the basic civil engineering workload is small, and the construction period is shortened. The isolating switch with the 35kV side-by-side bus isolating interval is controlled remotely through the operating mechanism, and can be controlled electrically or manually on site, so that the labor intensity of field workers is reduced.
Description
Technical Field
The invention relates to the field of oilfield ground engineering construction, in particular to a 35kV bypass bus device of an oilfield transformer substation and an application method thereof.
Background
With the development of oil field rolling development and power system, the power supply range of the transformer substation is increased, for example, the influence of maintenance power failure on production and life is too large, some transformer substations are developed into a 'transfer transformer substation', and load transfer power supply is carried out to other transformer substations while the power supply of an oil area is carried out, so that safe and reliable transfer power supply is realized, the power dispatching requirement is met, and the transfer transformer substation is required to be expanded to a 35kV bypass bus device.
The bypass bus device mainly aims at being arranged in a transformer substation, when a primary 35kV power line breaks down and needs to be overhauled normally, or the primary 35kV power line needs to be powered in a turning mode, and the load of the primary 35kV power line is brought to another primary 35kV power line by the bypass bus, so that at least 2 bypass isolating switches needed by the primary 35kV power line are arranged on the 1-set bypass bus device.
The conventional bypass bus device consists of a bypass bus frame and a bypass isolating switch, wherein 1 set of bypass bus frame generally adopts a door-shaped frame consisting of 6-12 steel pipes or cement electric poles, and is respectively connected with the bypass isolating switch required by a 2-circuit 35kV power line through bare wires.
Because oil field transformer substation often and large-scale oil gas station such as joint station are close to the construction, and the transformer substation is reformed transform and is installed bypass busbar device additional, and door-type frame area is too big, receives site limitation and business turn over line position influence, and naked wire and built high voltage distribution device safe distance is not enough, causes unable extension conventional bypass busbar device, and isolator is mostly manual control on spot, and the operation is inconvenient.
The invention uses the steel bracket to replace the gate-type frame formed by the steel pipe or the cement electric pole, reduces the occupied area, uses the tubular bus to replace the bare conductor, reduces the safety distance of the high-voltage distribution device, uses the 35kV side bus isolation interval of the open-type combined electrical appliance to replace the bypass isolation switch, has compact structure and achieves the purpose of densely arranging the bypass bus devices.
Disclosure of Invention
The invention overcomes the defects of the prior art, and provides a 35kV bypass bus device of an oilfield transformer substation and an application method thereof.
The technical problems solved by the invention can be realized by adopting the following technical scheme:
35kV bypass bus device of oil field transformer substation comprises
A first 35kV side mother isolation interval;
a second 35kV side mother isolation interval;
the bus support is arranged between the first 35kV side bus isolation interval and the second 35kV side bus isolation interval;
the tubular bus is provided with 3 at least, and 3 tubular buses all are connected first 35kV side female isolation interval after, rethread connection bus supports the back and is connected with the side female isolation interval of second 35 kV.
The first 35kV side female isolation interval and the second 35kV side female isolation interval all include isolation support, isolator, earthing switch, operating device and cubicle, isolation support top is connected with the rectangle support, the both sides that rectangle support top is parallel relatively are connected with multiunit support mobile jib, isolator is connected at the top between two relative support mobile jib, earthing switch is connected between multiunit support mobile jib bottom of parallel both sides relatively, earthing switch one end is connected with support mobile jib top, the earthing switch other end is connected with isolation support, operating device and cubicle connect the bottom at the rectangle support, isolator, earthing switch all are provided with 3 at least.
The support mobile jib be provided with three group on the both sides edge that rectangular support is parallel relatively, be connected with 3 isolator at two relative support mobile jib tops, 3 isolator are 35kV outdoor alternating current high voltage isolator, earthing switch is open-type earthing switch, the cubicle switchboard is PLC control unit, operating device is electric operating device.
The bus support comprises a bus support and post insulators, wherein the post insulators at least comprise 3, the 3 post insulators are welded at the top of the bus support, and the 3 tubular buses are connected to the 3 post insulators.
The tubular bus is made of heat-resistant aluminum alloy material.
The isolation support, the rectangular support connected with the top of the isolation support and the upper surface layer of the support main rod connected with the top of the rectangular support are plated with zinc layers in a uniform heating mode.
The upper surface layer of the bus bracket is hot-dip galvanized.
The first 35kV side bus isolation interval and the second 35kV side bus isolation interval are both connected with a 35kV in-out main bus, and the 35kV in-out main bus is connected with a circuit breaker.
The application method of the 35kV bypass bus device of the oil field transformer substation comprises the steps of
Step one: the 35kV bypass bus device of the oil field transformer substation adopts a dual power supply to supply power, and the tubular bus is connected in a sectional mode, wherein a first 35kV bypass bus isolation interval and a second 35kV bypass bus isolation interval are both connected with a 1-circuit 35kV inlet and outlet main bus;
step two: on the basis of the first step, the isolating switch on the first 35kV side mother isolating interval and the isolating switch on the second 35kV side mother isolating interval are in an off state;
when the first 35kV side-to-side bus isolation interval and the second 35kV side-to-side bus isolation interval 35kV power supply carry out load transfer power supply, the first 35kV side-to-side bus isolation interval 35kV in and out of the main bus isolation switch and the grounding switch are disconnected, the isolation switch and the grounding switch of the first 35kV side-to-side bus isolation interval are switched on, the isolation switch and the grounding switch of the second 35kV side-to-side bus isolation interval are in a disconnection state, the first 35kV side-to-side bus isolation interval 35kV in and out of the main bus is kept in a charged state through the bypass bus, namely, the first 35kV side-to-side bus isolation interval 35kV load is supplied by the second 35kV side-to-side bus isolation interval 35kV power supply;
disconnecting the isolation switch of the second 35kV side bus isolation interval section 35kV in and out of the main bus, switching on the isolation switch and the grounding switch of the second 35kV side bus isolation interval, wherein the isolation switch and the grounding switch of the first 35kV side bus isolation interval are in a disconnection state, and the main bus of the second 35kV side bus isolation interval section 35kV in and out keeps a charged state through the bypass bus, namely, the load of the second 35kV side bus isolation interval section 35kV is powered by a power supply of the first 35kV side bus isolation interval section 35 kV;
step three: on the basis of the second step, when a breaker on a main bus of a first 35kV side bus isolation interval section 35kV in and out is disconnected for maintenance, a disconnecting switch of the first 35kV side bus isolation interval is switched on, a disconnecting switch of a second 35kV side bus isolation interval is in a disconnected state, and the load of the main bus of the first 35kV side bus isolation interval section 35kV in and out is carried out by the main bus of the second 35kV side bus isolation interval section 35kV through the first 35kV side bus isolation interval;
when a breaker on the section II 35kV inlet and outlet main bus is disconnected for overhauling, a disconnecting switch of the 35kV side bus isolation interval II is switched on, a disconnecting switch of the 35kV side bus isolation interval I is in a disconnected state, the load of the section II 35kV inlet and outlet main bus is connected by the section I35 kV inlet and outlet main bus through the 35kV side bus isolation interval II, and the power supply of the circuit is not interrupted.
In the second step, the disconnection of the first 35kV side mother isolation interval and the closing of the second 35kV side mother isolation interval are controlled through a control cabinet and an operating mechanism;
an intelligent control unit is arranged in a control cabinet of a 35kV side bus isolation interval, data uploading is carried out through a data bus, acquisition of a switch state and execution of a remote command are realized, the intelligent control unit in the control cabinet adopts a PLC programmable controller, the PLC programmable controller is internally provided with a PLC control unit, the PLC programmable controller is connected with a transformer substation integrated monitoring control system through the data bus, the transformer substation integrated monitoring control system transmits switching-on and switching-off signals of an isolation switch and a grounding switch to the control cabinet PLC control unit, and output signals of the control cabinet PLC control unit are transmitted to an electric operating mechanism for realizing acquisition of the states of the isolation switch and the grounding switch and execution of the remote command;
when the first 35kV side mother isolation interval needs to be in a disconnection state, the transformer substation comprehensive monitoring control system transmits the disconnecting signals of the disconnecting switch and the grounding switch of the first 35kV side mother isolation interval to the PLC control unit of the control box, the PLC control unit of the control box transmits the output signals to the electric operating mechanism, and the electric operating mechanism drives the disconnecting switch and the grounding switch of the first 35kV side mother isolation interval to be disconnected and feeds back the state signals to the transformer substation comprehensive monitoring control system through the control box;
when the first 35kV side-to-side master isolation interval needs to be in a closing state, the transformer substation comprehensive monitoring control system transmits opening and closing signals of the isolation switch and the grounding switch of the first 35kV side-to-side master isolation interval to the control cabinet PLC control unit, the control cabinet PLC control unit outputs signals to the electric operating mechanism, and the electric operating mechanism drives the isolation switch and the grounding switch of the first 35kV side-to-side master isolation interval to be closed and feeds back state signals to the transformer substation comprehensive monitoring control system through the control cabinet;
when the second 35kV side-to-side isolation interval needs to be in a closing state, the transformer substation comprehensive monitoring control system transmits opening and closing signals of the isolation switch and the grounding switch of the second 35kV side-to-side isolation interval to the PLC control unit of the control box, the PLC control unit of the control box transmits output signals to the electric operating mechanism, and the electric operating mechanism drives the isolation switch and the grounding switch of the second 35kV side-to-side isolation interval to be closed and feeds back state signals to the transformer substation comprehensive monitoring control system through the control box.
When the second 35kV side-to-side isolation interval needs to be in a disconnection state, the transformer substation comprehensive monitoring control system transmits the disconnecting signals of the disconnecting switch and the grounding switch of the second 35kV side-to-side isolation interval to the PLC control unit of the control box, the PLC control unit of the control box transmits the output signals to the electric operating mechanism, and the electric operating mechanism drives the disconnecting switch and the grounding switch of the second 35kV side-to-side isolation interval to be disconnected and feeds back the state signals to the transformer substation comprehensive monitoring control system through the control box.
The beneficial effects of the invention are as follows:
compared with the prior art, the invention is characterized in that:
1. the conventional bypass bus frame and the isolating switch are replaced by the combination of the 35kV bypass bus isolation interval and the second 35kV bypass bus isolation interval with the tubular bus 4, the structure is simplified, the problems that the occupation area of the conventional bypass bus frame is large and the isolating switch is inconvenient to operate are solved, the 35kV bypass bus isolation interval can be correspondingly increased or decreased according to the number of 35kV inlet and outlet main buses of a transformer substation, the whole 35kV bypass bus device is installed in a built standby area of the 35kV transformer substation in an oil field, an extension site is not needed, the actual number of the 35kV inlet and outlet main buses can be extended, the 35kV bypass bus isolation interval is produced in a factory in a preassembled mode, components are installed on site, the steel bracket is installed, the basic civil work load is small, and the construction period is shortened.
2. The invention solves the problem that the oilfield transformer substation can not expand the bypass parent due to limited sites, improves the power supply reliability and is convenient to operate, maintain and manage. The whole side mother device does not need to expand a site, and the occupied area is reduced by about 55 percent compared with the traditional side mother device. The whole side mother device is preassembled for production, the assembly steel bracket is installed on site, the workload of basic civil engineering is small, the construction period is shortened, and compared with the prior art, the comprehensive investment is reduced by more than 15%.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of an inventive compact bypass bus arrangement.
Fig. 2 is a schematic side view of the compact bypass bus bar device of the present invention.
Fig. 3 is a schematic diagram of the front structure of the 35kV bypass bus isolation interval of the present invention.
Fig. 4 is a schematic side view of a 35kV bypass bus isolation interval of the present invention.
Fig. 5 is a schematic side view of the bus bar support of the present invention.
In the figure: 1. a first 35kV side mother isolation interval; 2. a first 35kV side mother isolation interval; 3. a bus bar support; 4. a tubular bus; 501. an isolating switch; 502. a grounding switch; 503. an operating mechanism; 504. a control cabinet; 505. an isolation bracket; 601. a post insulator; 602. and a bus bracket.
Detailed Description
Example 1:
referring to fig. 1 and 2, which are schematic structural views of embodiment 1 of the present invention, a 35kV bypass bus device of an oilfield transformer substation includes
A first 35kV side mother isolation interval 1;
a second 35kV side mother isolation interval 2;
the bus bar support 3 is arranged between the first 35kV side bus bar isolation interval 1 and the second 35kV side bus bar isolation interval 2;
and the tubular buses 4 are at least provided with 3, and the 3 tubular buses 4 are connected with the first 35kV side bus isolation interval 1 and then connected with the second 35kV side bus isolation interval 2 after being connected with the bus support 3.
When in actual use, the method comprises the following steps: the invention provides a transformer substation 35kV three-phase high-voltage narration, which is characterized in that a 35kV side bus isolation interval 1 and a second 35kV side bus isolation interval 2 are combined with a tubular bus 4, a conventional bypass bus framework and an isolating switch are replaced, the structure is simplified, the problems of large occupied area of the conventional bypass bus framework and inconvenient operation of the isolating switch are solved, the 35kV side bus isolation interval can be correspondingly increased or decreased according to the number of 35kV entering and exiting main buses of a transformer substation, the number of 35kV side bus isolation intervals is correspondingly increased or decreased, a whole 35kV bypass bus device is installed in a built standby area of an oilfield 35kV transformer substation, an extension site is not needed, the expansion can be carried out according to the actual number of 35kV entering and exiting main buses, the 35kV side bus isolation interval factory is prefabricated, the assembly is carried out on site, a steel bracket is installed, the basic civil construction workload is small, the construction period is shortened, a bus support 3 is arranged between the first 35kV side bus isolation interval 1 and the second 35kV side bus isolation interval 2, the tubular bus 4 is at least provided with 3, and the 3 tubular bus 4 is connected with the first 35kV side bus isolation interval 1 through the connection 3 kV side bus support and then connected with the second side bus isolation interval 2.
Example 2:
referring to fig. 3 and 4, the present embodiment is different from embodiment 1 in that: the first 35kV side female isolation interval 1 and the second 35kV side female isolation interval 2 respectively comprise an isolation support 505, an isolation switch 501, a grounding switch 502, an operating mechanism 503 and a control cabinet 504, wherein the top of the isolation support 505 is connected with rectangular supports, two sides of the tops of the rectangular supports, which are relatively parallel, are connected with a plurality of groups of support main rods, the tops of the two opposite support main rods are connected with the isolation switch 501, the bottoms of the plurality of groups of support main rods, which are relatively parallel, are connected with the grounding switch 502, one end of the grounding switch 502 is connected with the tops of the support main rods, the other end of the grounding switch 502 is connected with the isolation support 505, the operating mechanism 503 and the control cabinet 504 are connected to the bottoms of the rectangular supports, and the isolation switch 501 and the grounding switch 502 are at least provided with 3.
Preferably, it is: the support mobile jib be provided with three groups on the both sides edge that rectangular support is relatively parallel, be connected with 3 isolator 501,3 isolator 501 and be 35kV outdoor alternating current high voltage isolator relative to two support mobile jib tops, earthing switch 502 is open-ended earthing switch, the cubicle switchboard 504 is the PLC control unit, operating device 503 is electric operating device.
When in actual use, the method comprises the following steps: the top of the isolation bracket 505 is connected with a rectangular bracket, two opposite parallel sides of the top of the rectangular bracket are connected with a plurality of groups of bracket main rods, the bracket structure using the structure is simplified, the occupied area is reduced, and the problem that a bypass bus cannot be expanded due to limited sites or insufficient safety distance of a high-voltage distribution device in an oil field established transformer substation is solved; the isolating switch 501 is connected to the top between two opposite support mobile poles, the earthing switch 502 is connected between the multiunit support mobile pole bottoms of two opposite parallel sides, earthing switch 502 one end is connected with support mobile pole top, the earthing switch 502 other end is connected with isolating support 505, isolating switch 501 is used for the effect of switch-on and switch-off of circuit, earthing switch 502 is used for guaranteeing that whole device places electric leakage, isolating support 501, the support mobile pole at rectangular support and rectangular support top all adopts Q345's steel framework, isolating support 501 bottom adopts flange joint with ground basis, operating device 503 and tandem control cabinet 504 are connected in rectangular support's bottom, operating device 503 can carry out remote control to isolating switch 501, earthing switch 502 through tandem control cabinet 504, and realize on-the-spot manual operation, operating device 503 is electric operating device, electric operating device mainly comprises acting element, connecting rod system, divide-shut brake device and buffering flange etc. part. The invention discloses a switching-on/switching-off control system, which is characterized in that an electromagnetic force generated by working current in a coil of a switching-on/switching-off device is utilized to drive a switching-on iron core, an impact connecting rod system is used for switching-on/switching-off operation, the switching-on/switching-off operation is manually controlled through a start-stop control button on an electric operating mechanism, a switch 501 and a grounding switch 502 are controlled remotely through a master control cabinet 504, the electric operating mechanism is in the prior art, as long as the electric operating mechanism capable of realizing the functions can be used as a component of the invention, the master control cabinet 504 is also in the prior art, an intelligent control unit is arranged in the master control cabinet 504, data uploading is carried out through a data bus, acquisition of a switch state and execution of a remote command are realized, the intelligent control unit in the master control cabinet adopts a PLC programmable controller, the PLC control unit is arranged in the PLC programmable controller, a substation integrated monitoring control system is connected with the PLC control unit through the data bus, switching-on/switching-off signals of the switch 501 and the grounding switch 502 are transmitted to the PLC control unit, and output signals of the PLC control unit of the master control cabinet 504 are transmitted to the electric operating mechanism, so that the switch 501, the switch 501 and the grounding switch 502 can be realized, the PLC control unit can be in the remote control system is applicable to the master control system, and the power control unit is in the power station, and the power control system can be operated by the master control system 35, and the PLC control unit can realize the functions of the invention, and the remote control system can be operated by the master control and the PLC control unit in the master control system, and the system can realize the functions of the remote control and the control system and the functions of the switch and the master control system; the support mobile jib is provided with three groups at the opposite parallel both sides edge of rectangular support and is the preferred group number when in actual use, and isolator 501 is 35kV outdoor alternating current high voltage isolator, earthing switch 502 is open-type earthing switch, and 35kV side female isolation interval outdoor application is supporting to use 35kV outdoor alternating current high voltage isolator, and open-type earthing switch easily combines with isolator, carries out engineering preassembly type production. The isolating switch 501 and the grounding switch 502 of the 35kV side-by-side female isolating interval 2 are provided with a linkage mechanism to ensure that the electric operating mechanism 503 firstly opens the isolating switch and then closes the grounding switch when power is cut off, and the linkage mechanism is the prior art in the industry, so the invention is not described in detail, the prior art only needs to realize and adapt to the functions of the linkage mechanism in the invention, and the electric operating mechanism 503 firstly opens the grounding switch 502 and then closes the isolating switch 501 when power is supplied.
Example 3:
referring to fig. 5, this embodiment differs from embodiment 1 in that: the bus bar support 3 comprises bus bar supports 602 and post insulators 601, the post insulators 601 at least comprise 3, the 3 post insulators 601 are welded on the tops of the bus bar supports 602, and the 3 tubular bus bars 4 are connected to the 3 post insulators 601.
Preferably, it is: the tubular bus 4 is made of heat-resistant aluminum alloy material.
When in actual use, the method comprises the following steps: the bus bar support 3 comprises bus bar supports 602 and pillar insulators 601, the pillar insulators 601 at least comprise 3, 3 pillar insulators 601 are welded at the top of the bus bar supports 602, 3 tubular buses 4 are connected to the 3 pillar insulators 601, the bus bar supports 602 are used for supporting the tubular buses 4, the pillar insulators 601 are used for insulating the tubular buses 4, the tubular buses 4 are made of heat-resistant aluminum alloy materials, and the bus bar support is long in service life and good in electric conduction performance.
Example 4:
compared with embodiment 2, this embodiment is different in that: the isolation support 505, the rectangular support connected with the top of the isolation support 505 and the upper surface layer of the support main rod connected with the top of the rectangular support are plated with zinc layers in a hot-dip manner.
When in actual use, the method comprises the following steps: the insulating support 505, the rectangular support connected to the top of the insulating support 505 and the upper surface layer of the support main rod connected to the top of the rectangular support are uniformly plated with zinc layers so as to prevent the parts from rusting and prolong the service life.
Example 5:
compared with embodiment 3, this embodiment is different in that: the upper surface layer of the bus bar bracket 602 is hot-dip galvanized.
When in actual use, the method comprises the following steps: the zinc layer is hot-plated on the upper surface layer of the bus bar bracket 602 to prevent the parts from rusting, so that the replacement is time-consuming and labor-consuming, the service life is influenced, namely the service life of the bus bar bracket 602 is prolonged, and the following replacement times are reduced.
Example 6:
compared with embodiment 1, this embodiment is different in that: the first 35kV side bus isolation interval 1 and the second 35kV side bus isolation interval 2 are both connected with a 35kV in-out main bus, and the 35kV in-out main bus is connected with a circuit breaker.
When in actual use, the method comprises the following steps: the first 35kV side bus isolation interval 1 and the second 35kV side bus isolation interval 2 are both connected with 35kV in-out main buses, the pipeline buses 4 are connected with 35kV inlet wires, so that bypass buses can be connected with all in-out line loops, the 35kV in-out main buses are connected with circuit breakers, and the circuit breakers are used for being disconnected when the first 35kV side bus isolation interval 1 section 35kV in-out main buses are overhauled.
The distance between different phases of the 35kV bypass bus device of the oilfield transformer substation is greater than 400mm of standard minimum distance, the distance between the bypass tubular bus 4 and the 35kV lead is greater than 1150mm of standard minimum distance, the distance between the isolating switch 501 and the 35kV lead is greater than 1150mm of standard minimum distance, and the distance between the external insulation of the bypass bus and the ground is greater than 2500mm of standard minimum distance, so that the safety distance required by the design Specification (GB 50060) of 3-110 kV high-voltage distribution devices is met. The 35kV bypass bus device of the oil field transformer substation can achieve the purpose that the transformer substation is in line fault or normal overhaul without power failure, and the double power supplies are used for transferring power.
Example 7:
an application method of the 35kV bypass bus device of an oilfield transformer substation comprises the steps of any one of the embodiments 1-6, and the 35kV bypass bus device of the oilfield transformer substation comprises the following steps
Step one: the 35kV bypass bus device of the oil field transformer substation adopts a dual power supply to supply power, and the tubular bus 4 adopts a sectional mode to connect, wherein a first 35kV bypass bus isolation interval 1 and a second 35kV bypass bus isolation interval 2 are both connected with a 1-circuit 35kV inlet and outlet main bus;
step two: on the basis of the first step, the isolating switch 501 and the grounding switch 502 on the first 35kV side mother isolating interval 1 and the second 35kV side mother isolating interval 2 are in an off state;
when the first 35kV side mother isolation interval 1 and the second 35kV side mother isolation interval 2 sections 35kV power supply carry out load transfer power supply, the first 35kV side mother isolation interval 1 section 35kV in and out main bus isolation switch 501 and the grounding switch 502 are disconnected, the isolation switch 501 and the grounding switch 502 of the first 35kV side mother isolation interval 1 are switched on, the isolation switch 501 and the grounding switch 502 of the second 35kV side mother isolation interval 2 are in a disconnection state, the first 35kV side mother isolation interval 1 section 35kV in and out main bus is kept in a charged state through a bypass bus, namely, the first 35kV side mother isolation interval 1 section 35kV load is supplied by the second 35kV side mother isolation interval 2 sections 35kV power supply;
disconnecting a second 35kV side-to-side bus isolation interval 2 section 35kV business-to-business main bus isolating switch, switching on a second 35kV side-to-side bus isolation interval 2 isolating switch 501 and a grounding switch 502, wherein the first 35kV side-to-side bus isolation interval 1 isolating switch 501 and the grounding switch 502 are in a disconnection state, and the second 35kV side-to-side bus isolation interval 2 section 35kV business-to-business main bus is kept in a charged state through a bypass bus, namely a second 35kV side-to-side bus isolation interval 2 section 35kV load is supplied by a first 35kV side-to-side bus isolation interval 1 section 35kV power supply;
step three: on the basis of the second step, when a breaker on a 35kV inlet/outlet main bus of a first 35kV side main isolation interval 1 section is disconnected for maintenance, a disconnecting switch of the first 35kV side main isolation interval 1 is switched on, a disconnecting switch of a second 35kV side main isolation interval 2 is in a disconnected state, and loads of the 35kV inlet/outlet main bus of the first 35kV side main isolation interval 1 section are carried out by connecting the 35kV inlet/outlet main bus of the second 35kV side main isolation interval 2 section through the first 35kV side main isolation interval 1;
when a breaker on the section II 35kV inlet and outlet main bus is disconnected for overhauling, a disconnecting switch of the 35kV side bus isolation interval II is switched on, a disconnecting switch of the 35kV side bus isolation interval I is in a disconnected state, the load of the section II 35kV inlet and outlet main bus is connected by the section I35 kV inlet and outlet main bus through the 35kV side bus isolation interval II, and the power supply of the circuit is not interrupted.
Example 8:
in the second step, the disconnection of the first 35kV side mother isolation interval 1 and the switching-on of the second 35kV side mother isolation interval 2 are controlled through a control cabinet 504 and an operating mechanism 503;
an intelligent control unit is arranged in a control cabinet 504 of a 35kV side bus isolation interval 2, data uploading is carried out through a data bus, acquisition of a switch state and execution of a remote command are realized, the intelligent control unit in the control cabinet adopts a PLC programmable controller, the PLC programmable controller is internally provided with a PLC control unit, the PLC programmable controller is connected with a transformer substation integrated monitoring control system through the data bus, the transformer substation integrated monitoring control system transmits opening and closing signals of an isolating switch 501 and a grounding switch 502 to the PLC control unit of the control cabinet 504, and output signals of the PLC control unit of the control cabinet 504 are transmitted to an electric operating mechanism 503 for realizing acquisition of the states of the isolating switch 501 and the grounding switch 502 and execution of the remote command;
when the first 35kV side mother isolation interval 1 needs to be in a disconnection state, the transformer substation comprehensive monitoring control system transmits switching-on and switching-off signals of the isolation switch 501 and the grounding switch 502 of the first 35kV side mother isolation interval 1 to a PLC control unit of the control converging cabinet 504, an output signal of the PLC control unit of the control converging cabinet 504 is transmitted to an electric operating mechanism 503, the electric operating mechanism 503 drives the isolation switch 501 and the grounding switch 502 of the first 35kV side mother isolation interval 1 to be disconnected, and status signals are fed back to the transformer substation comprehensive monitoring control system through the control converging cabinet 504;
when the first 35kV side mother isolation interval 1 needs to be in a closing state, the transformer substation comprehensive monitoring control system transmits opening and closing signals of the isolation switch 501 and the grounding switch 502 of the first 35kV side mother isolation interval 1 to a PLC control unit of a control converging cabinet 504, an output signal of the PLC control unit of the control converging cabinet 504 is transmitted to an electric operating mechanism 503, the electric operating mechanism 503 drives the isolation switch 501 and the grounding switch 502 of the first 35kV side mother isolation interval 1 to be closed, and status signals are fed back to the transformer substation comprehensive monitoring control system through the control converging cabinet 504;
when the second 35kV side mother isolation interval 2 needs to be in a closing state, the transformer substation comprehensive monitoring control system transmits opening and closing signals of the isolation switch 501 and the grounding switch 502 of the second 35kV side mother isolation interval 2 to a PLC control unit of the control converging cabinet 504, an output signal of the PLC control unit of the control converging cabinet 504 is transmitted to an electric operating mechanism 503, the electric operating mechanism 503 drives the isolation switch 501 and the grounding switch 502 of the second 35kV side mother isolation interval 2 to be closed, and status signals are fed back to the transformer substation comprehensive monitoring control system through the control converging cabinet 504;
when the second 35kV side-to-side mother isolation interval 2 needs to be in a disconnection state, the transformer substation comprehensive monitoring control system transmits switching-on and switching-off signals of the isolation switch 501 and the grounding switch 502 of the second 35kV side-to-side mother isolation interval 2 to the PLC control unit of the control converging cabinet 504, the PLC control unit output signal of the control converging cabinet 504 is transmitted to the electric operating mechanism 503, the electric operating mechanism 503 drives the isolation switch 501 and the grounding switch 502 of the second 35kV side-to-side mother isolation interval 2 to be disconnected, and status signals are fed back to the transformer substation comprehensive monitoring control system through the control converging cabinet 504. The transformer substation comprehensive monitoring control system is a mature monitoring control system in the prior industry and can be only applied to the invention.
The isolating switch 501 and the grounding switch 502 of the 35kV side-by-side female isolating interval 2 are provided with a linkage mechanism to ensure that the electric operating mechanism 503 firstly opens the isolating switch and then closes the grounding switch when power is cut off, and the linkage mechanism is the prior art in the industry, so the invention is not described in detail, the prior art only needs to realize and adapt to the linkage mechanism function in the invention, and the electric operating mechanism 503 firstly opens the grounding switch 502 and then closes the isolating switch 501 when power is supplied.
By the method, the power supply reliability is improved, operation, maintenance and management are convenient, meanwhile, the disconnection of the first 35kV side mother isolation interval 1 and the switching-on of the second 35kV side mother isolation interval 2 can be controlled remotely and automatically through the control cabinet 504 and the operating mechanism 503, and the use is convenient and reliable.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the scope of the knowledge of those skilled in the art without departing from the spirit of the present invention, which is within the scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
The technical solutions between the embodiments may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art that when the combination of technical solutions contradicts or cannot be implemented, it should be considered that the combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.
Claims (7)
1. An application method of a 35kV bypass bus device of an oilfield transformer substation is characterized by comprising the following steps: at least comprises a 35kV bypass bus device of an oilfield transformer substation, and the device comprises
A first 35kV side mother isolation interval (1);
a second 35kV side mother isolation interval (2);
the bus support (3) is arranged between the first 35kV side bus isolation interval (1) and the second 35kV side bus isolation interval (2);
the tubular buses (4) are at least provided with 3, and the 3 tubular buses (4) are connected with the first 35kV side bus isolation interval (1) and then connected with the second 35kV side bus isolation interval (2) after being connected with the bus support (3);
the first 35kV side mother isolation interval (1) and the second 35kV side mother isolation interval (2) comprise an isolation bracket (505), an isolation switch (501), a grounding switch (502), an operating mechanism (503) and a control cabinet (504), wherein the top of the isolation bracket (505) is connected with a rectangular bracket, two opposite parallel sides of the top of the rectangular bracket are connected with a plurality of groups of bracket main rods, the top between the two opposite bracket main rods is connected with the isolation switch (501), the bottoms of the plurality of groups of bracket main rods on the opposite parallel sides are connected with the grounding switch (502), one end of the grounding switch (502) is connected with the top of the bracket main rod, the other end of the grounding switch (502) is connected with the isolation bracket (505), the operating mechanism (503) and the control cabinet (504) are connected to the bottom of the rectangular bracket, and the isolation switch (501) and the grounding switch (502) are at least 3; the operating mechanism (503) is an electric operating mechanism;
the application method of the device comprises the following steps:
step one: the 35kV bypass bus device of the oilfield transformer substation adopts a dual power supply to supply power, and the tubular bus (4) adopts a sectional mode to connect, wherein the first 35kV bypass bus isolation interval (1) and the second 35kV bypass bus isolation interval (2) are both connected with a 35kV inlet and outlet main bus;
step two: on the basis of the first step, the isolating switch (501) and the grounding switch (502) on the first 35kV side mother isolating interval (1) and the second 35kV side mother isolating interval (2) are in an off state;
when the first 35kV side mother isolation interval (1) and the second 35kV side mother isolation interval (2) section 35kV power supply carry out load transfer power supply, the first 35kV side mother isolation interval (1) section 35kV in-out main bus isolation switch (501) and the grounding switch (502) are disconnected, the isolation switch (501) and the grounding switch (502) of the first 35kV side mother isolation interval (1) are switched on, the isolation switch (501) and the grounding switch (502) of the second 35kV side mother isolation interval (2) are in a disconnected state, the first 35kV side mother isolation interval (1) section 35kV in-out main bus is kept in a charged state through a bypass bus, namely, the first 35kV side mother isolation interval (1) section 35kV load is supplied by the second 35kV side mother isolation interval (2) section 35kV power supply;
disconnecting the 35kV inlet and outlet main bus isolation switch of the second 35kV side bus isolation interval (2), switching on the isolation switch (501) and the grounding switch (502) of the second 35kV side bus isolation interval (2), disconnecting the isolation switch (501) and the grounding switch (502) of the first 35kV side bus isolation interval (1), and keeping the 35kV inlet and outlet main bus of the second 35kV side bus isolation interval (2) in an electrified state through a bypass bus, namely, the 35kV load of the second 35kV side bus isolation interval (2) is supplied by the 35kV power supply of the first 35kV side bus isolation interval (1);
step three: on the basis of the second step, when a breaker on a 35kV inlet/outlet main bus of a first 35kV side bus isolation interval (1) is disconnected for maintenance, a disconnecting switch of the first 35kV side bus isolation interval (1) is switched on, a disconnecting switch of a second 35kV side bus isolation interval (2) is in a disconnected state, and a 35kV inlet/outlet main bus load of the first 35kV side bus isolation interval (1) is powered on by a 35kV inlet/outlet main bus of the second 35kV side bus isolation interval (2) through the first 35kV side bus isolation interval (1);
when a breaker on a 35kV inlet/outlet main bus of a second 35kV side-bus isolation interval (2) section is disconnected for maintenance, an isolating switch of the second 35kV side-bus isolation interval (2) is switched on, an isolating switch of a first 35kV side-bus isolation interval (1) is in an off state, the load of the 35kV inlet/outlet main bus of the second 35kV side-bus isolation interval (2) section is powered on by the 35kV inlet/outlet main bus of the first 35kV side-bus isolation interval (1) section through the second 35kV side-bus isolation interval (2), and the power supply of the circuit is not interrupted;
in the second step, the disconnection of the first 35kV side mother isolation interval (1) and the switching-on of the second 35kV side mother isolation interval (2) are controlled through a control cabinet (504) and an electric operating mechanism (503);
an intelligent control unit is arranged in a control cabinet (504) of a second 35kV side bus isolation interval (2), data uploading is carried out through a data bus, acquisition of a switch state and execution of a remote command are achieved, the intelligent control unit in the control cabinet adopts a PLC programmable controller, a PLC control unit is arranged in the PLC programmable controller and is connected with a transformer substation integrated monitoring control system through the data bus, the transformer substation integrated monitoring control system transmits an isolation switch (501) and a grounding switch (502) opening and closing signal to the control cabinet (504) PLC control unit, and an output signal of the control cabinet (504) PLC control unit is transmitted to an electric operating mechanism (503) and is used for achieving acquisition of the states of the isolation switch (501) and the grounding switch (502) and execution of the remote command;
when the first 35kV side mother isolation interval (1) needs to be in a disconnection state, the transformer substation comprehensive monitoring control system transmits switching-on and switching-off signals of the isolation switch (501) and the grounding switch (502) of the first 35kV side mother isolation interval (1) to a PLC control unit of a control converging cabinet (504), an output signal of the PLC control unit of the control converging cabinet (504) is transmitted to an electric operating mechanism (503), the electric operating mechanism (503) drives the isolation switch (501) and the grounding switch (502) of the first 35kV side mother isolation interval (1) to be disconnected, and status signals are fed back to the transformer substation comprehensive monitoring control system through the control converging cabinet (504);
when the first 35kV side mother isolation interval (1) needs to be in a closing state, the transformer substation comprehensive monitoring control system transmits switching-on and switching-off signals of the isolation switch (501) and the grounding switch (502) of the first 35kV side mother isolation interval (1) to a PLC control unit of a control cubicle (504), an output signal of the PLC control unit of the control cubicle (504) is transmitted to an electric operating mechanism (503), the electric operating mechanism (503) drives the isolation switch (501) and the grounding switch (502) of the first 35kV side mother isolation interval (1) to be closed, and status signals are fed back to the transformer substation comprehensive monitoring control system through the control cubicle (504);
when the second 35kV side mother isolation interval (2) needs to be in a closing state, the transformer substation comprehensive monitoring control system transmits opening and closing signals of the isolation switch (501) and the grounding switch (502) of the second 35kV side mother isolation interval (2) to a PLC control unit of a control converging cabinet (504), an output signal of the PLC control unit of the control converging cabinet (504) is transmitted to an electric operating mechanism (503), the electric operating mechanism (503) drives the isolation switch (501) and the grounding switch (502) of the second 35kV side mother isolation interval (2) to be closed, and the state signals are fed back to the transformer substation comprehensive monitoring control system through the control converging cabinet (504);
when the second 35kV side-to-side busbar isolation interval (2) needs to be in a disconnection state, the transformer substation comprehensive monitoring control system transmits the disconnecting signals of the disconnecting switch (501) and the grounding switch (502) of the second 35kV side-to-side busbar isolation interval (2) to the PLC control unit of the control cubicle (504), the output signals of the PLC control unit of the control cubicle (504) are transmitted to the electric operating mechanism (503), the electric operating mechanism (503) drives the disconnecting switch (501) and the grounding switch (502) of the second 35kV side-to-side busbar isolation interval (2) to be disconnected, and the state signals are fed back to the transformer substation comprehensive monitoring control system through the control cubicle (504).
2. The application method of the 35kV bypass bus device of the oilfield transformer substation, which is characterized in that: the support mobile jib be provided with three group on the both sides edge that rectangular support is parallel relatively, two relative support mobile jib tops are connected with 3 isolator (501), and 3 isolator (501) are 35kV outdoor alternating current high voltage isolator, earthing switch (502) are open-type earthing switch, control by sink cabinet (504) are PLC control unit.
3. The application method of the 35kV bypass bus device of the oilfield transformer substation, which is characterized in that: the bus support (3) comprises a bus support (602) and post insulators (601), the post insulators (601) at least comprise 3, 3 post insulators (601) are welded at the top of the bus support (602), and 3 tubular buses (4) are connected to the 3 post insulators (601).
4. The application method of the 35kV bypass bus device of the oilfield transformer substation, which is characterized in that: the tubular bus (4) is made of heat-resistant aluminum alloy material.
5. The application method of the 35kV bypass bus device of the oilfield transformer substation, which is characterized in that: the upper surface layers of the isolating support (505), the rectangular support connected with the top of the isolating support (505) and the support main rod connected with the top of the rectangular support are all hot-dip galvanized with zinc layers.
6. The application method of the 35kV bypass bus device of the oil field transformer substation according to claim 3, which is characterized in that: the upper surface layer of the bus bracket (602) is hot-dip galvanized.
7. The application method of the 35kV bypass bus device of the oilfield transformer substation, which is characterized in that: the first 35kV side bus isolation interval (1) and the second 35kV side bus isolation interval (2) are connected with a 35kV in-out main bus, and the 35kV in-out main bus is connected with a circuit breaker.
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