CN112054382B - GIS cable T connects a section of thick bamboo circuit - Google Patents
GIS cable T connects a section of thick bamboo circuit Download PDFInfo
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- CN112054382B CN112054382B CN202010928739.4A CN202010928739A CN112054382B CN 112054382 B CN112054382 B CN 112054382B CN 202010928739 A CN202010928739 A CN 202010928739A CN 112054382 B CN112054382 B CN 112054382B
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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
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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
- H02B1/202—Cable lay-outs
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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
- H02B1/24—Circuit arrangements for boards or switchyards
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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
- H02B5/00—Non-enclosed substations; Substations with enclosed and non-enclosed equipment
- H02B5/01—Earthing arrangements, e.g. earthing rods
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The application provides a GIS cable T connects a section of thick bamboo circuit, this application combines shutting control process to respond to based on a modified GIS cable T connects a section of thick bamboo circuit the disconnection of the leading-out terminal circuit breaker of a GIS cable T connection circuit both sides, breaks off in proper order the transformer substation's circuit breaker with T connects a section of thick bamboo isolator, forms closed electric power return circuit, then the electromagnetic locking module will the ground point of T connection section of thick bamboo keeps at the locking state, connects a locking of a grounding switch ground terminal earth connection breaking point through the electromagnetic locking module to T, ensures that the staff breaks away and connects the ground wire under the no current condition, avoids the emergence of incident, has solved the technical problem that current GIS cable T connection section of thick bamboo circuit degree of safety is low.
Description
Technical Field
The application relates to the technical field of power equipment, in particular to a GIS cable T connecting tube circuit.
Background
Under the condition that a 110kV transformer substation adopts a line transformer bank for wiring, the construction scale is generally constructed according to 3 main transformers and 3-circuit power supplies. Wherein, each circuit is designed according to the system wiring principle that T is connected with 3 main transformers for power supply, and is called 3T wiring for short. When the 110kV power grid adopts a 3T wiring design, a cable T contact is arranged in a transformer substation, and a GIS cable T connecting cylinder or a cable terminal is required to be added in the transformer substation to realize a typical mode that one main transformer has two-circuit 110kV outgoing lines in order to complete T connection in the transformer substation.
The existing GIS cable T connecting cylinder circuit is convenient to overhaul, maintain, isolate and position faults and is convenient for a faultless line to recover operation, an isolating switch and a T connecting cylinder grounding switch are usually arranged between two 110kV outgoing lines, the operation requirement of disconnecting and connecting wires of the T connecting cylinder is strict, the grounding point can be disconnected under the condition of no current, and the current condition of the grounding wire cannot be effectively mastered by the existing GIS cable T connecting cylinder circuit, so that in practical application, a worker often disconnects the connecting point under the condition that whether no current exists or not cannot be accurately known, and the technical problem that the safety degree of the existing GIS cable T connecting cylinder circuit is low is caused.
Disclosure of Invention
The application provides a GIS cable T connects a section of thick bamboo circuit for solve the technical problem that current GIS cable T connects a section of thick bamboo circuit safety degree to hang down.
In view of this, the present application provides a GIS cable T-socket circuit, including: the system comprises a T-connection cylinder grounding switch, a T-connection cylinder isolating switch, a transformer substation circuit breaker and an electromagnetic locking module;
the transformer substation circuit breaker is arranged at a transformer substation connecting end of the GIS cable T connecting cylinder circuit;
the first end of the T-connection tube disconnecting switch is connected with the first end of the transformer substation circuit breaker, and the second end of the T-connection tube disconnecting switch is connected with the first end of the T-connection tube grounding switch;
the second end of the T-connection cylinder grounding switch is connected with a grounding end through the electromagnetic locking module, and the electromagnetic locking module is used for locking the grounding point of the T-connection cylinder when current is detected;
wherein, GIS cable T connects shutting control process of a section of thick bamboo circuit to include:
in response to the disconnection of the circuit breakers at the outlet ends of the two sides of the GIS cable T-connection cylinder circuit, sequentially disconnecting the transformer substation circuit breaker and the T-connection cylinder isolating switch to form a closed power circuit;
and when the T-connection cylinder isolating switch is disconnected, the T-connection cylinder grounding switch is closed, and the grounding point of the T-connection cylinder is kept in a locking state through the electromagnetic locking module until no current passes through.
Optionally, after the T-junction cylinder disconnecting switch is opened, the T-junction cylinder grounding switch is closed, and the electromagnetic locking module maintains the grounding point of the T-junction cylinder in a locking state until no current passes through the T-junction cylinder grounding switch, the method further includes:
when the electromagnetic locking module is in an unlocked state, the T-shaped connecting cylinder grounding switch is disconnected;
and after the T-connection tube grounding switch is disconnected, closing the T-connection tube disconnecting switch, the transformer substation circuit breaker and the leading-out terminal circuit breaker in sequence.
Optionally, the electromagnetic locking module is embodied as an electromagnetic lock.
Optionally, the method further comprises: an electrical latching module;
the electric locking module is arranged between the first end of the T-connection cylinder isolating switch and the first end of the transformer substation circuit breaker.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides a GIS cable T connects a section of thick bamboo circuit includes: the system comprises a T-connection cylinder grounding switch, a T-connection cylinder isolating switch, a transformer substation circuit breaker and an electromagnetic locking module; the transformer substation circuit breaker is arranged at a transformer substation connecting end of the GIS cable T connecting cylinder circuit; the first end of the T-connection tube isolating switch is connected with the first end of the transformer substation circuit breaker, and the second end of the T-connection tube isolating switch is connected with the first end of the T-connection tube grounding switch; the second end of the T-connection cylinder grounding switch is connected with a grounding end through the electromagnetic locking module, and the electromagnetic locking module is used for locking the grounding point of the T-connection cylinder when current is detected; wherein, the shutting control process of GIS cable T connects a section of thick bamboo circuit includes: responding to the disconnection of circuit breakers at the wire outlet ends on two sides of the GIS cable T-connection tube circuit, and sequentially disconnecting the transformer substation circuit breaker and the T-connection tube disconnecting switch to form a closed power loop; and after the T-connection cylinder isolating switch is disconnected, the T-connection cylinder grounding switch is closed, and the grounding point of the T-connection cylinder is kept in a locking state through the electromagnetic locking module until no current passes through.
This application is based on modified GIS cable T connects a section of thick bamboo circuit, combines the shutting control process to respond to the disconnection of the leading-out terminal circuit breaker of GIS cable T connects a section of thick bamboo circuit both sides breaks off in proper order the transformer substation's circuit breaker with T connects a section of thick bamboo isolator, forms closed power return circuit, then passes through the electromagnetic locking module will T connects a section of thick bamboo's ground point to keep at the locking state for remaining electric energy discharges along with the earthing terminal in the closed power return circuit, until no electric current passes through, removes electromagnetic locking module again and connects a section of thick bamboo earthing switch's locking to T, ensures that the staff unlocks the earth connection under the no electric current condition, avoids the emergence of incident, has solved the technical problem that current GIS cable T connects a section of thick bamboo circuit security degree low.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 shows a conventional GIS cable T connection tube circuit structure.
Fig. 2 is a schematic structural diagram of an embodiment of a GIS cable tee junction box circuit provided in the present application.
Fig. 3 is an enlarged structural schematic diagram of a portion a1 in a GIS cable T-connection tube circuit provided by the present application.
Fig. 4 is a schematic diagram of a locking control flow of a GIS cable T-connection cartridge circuit provided by the present application.
Wherein the reference numbers are as follows: 1021A0 and 1021B0 are T-barrel grounding switches; 1021A and 1021B are T-connection tube isolating switches; 102 is a substation breaker; 103 is an electromagnetic locking module.
Detailed Description
As shown in fig. 1, in order to facilitate maintenance, fault isolation and location, and facilitate recovery of a faultless line, a disconnecting switch and a T-connection grounding switch are usually disposed between two 110kV outgoing lines, wherein an operation requirement for disconnecting a grounding point of the T-connection grounding switch is strict, and the grounding point needs to be disconnected under a condition of no current.
The embodiment of the application provides a GIS cable T connects a section of thick bamboo circuit for solve the technical problem that current GIS cable T connects a section of thick bamboo circuit safety degree to hang down.
In order to make the objects, features and advantages of the present invention more apparent and understandable, the following embodiments of the present invention are clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 2 to 4, a first embodiment of the present application provides a GIS cable tee connector circuit, including: the system comprises a T-connection cylinder grounding switch 1021A0, a T-connection cylinder isolating switch, a transformer substation circuit breaker and an electromagnetic locking module;
the transformer substation circuit breaker 102 is arranged at a transformer substation connecting end of the GIS cable T connecting cylinder circuit;
a first end of the T-barrel disconnecting switch 1021A is connected with a first end of the substation circuit breaker 102, and a second end is connected with a first end of the T-barrel grounding switch 1021A 0;
a second end of the T-connection tube grounding switch 1021a0 is connected with a grounding end through an electromagnetic locking module, and the electromagnetic locking module is used for locking the T-connection tube grounding switch when current is detected;
wherein, GIS cable T connects shutting control process of a section of thick bamboo circuit to include:
102, after the T-connection cylinder isolating switch 1021A is disconnected, closing the T-connection cylinder grounding switch 1021A, and keeping the grounding point of the T-connection cylinder in a locking state through the electromagnetic locking module 103 until no current passes through.
For the sake of simplicity, the circuit configuration shown in fig. 2 is exemplified on the 1021A0 side and the 1021A side in the present application.
When a fault condition occurs in the normal operation process of the equipment, the 110kV outgoing line circuit breakers of the 220kV stations on the two sides trip, and the line stops operating. The substation breaker 102 is opened and the line is changed to maintenance. The T-connection cylinder isolating switch 1021A is switched off and switched on, and the T-connection cylinder grounding switch 1021A0 is closed. To simplify the operation, the optimization here takes the substation breaker 102 as the main logic condition, and the corresponding control logic is as follows:
the actions are as follows: a T-connection cylinder isolating switch 1021A is switched on and off; conditions are as follows: substation breaker 102, branch.
The method comprises the following steps: a T-connection cylinder grounding switch 1021A0 is switched on; conditions are as follows: t connects a section of thick bamboo isolator 1021A, branch.
As shown in fig. 3, after the T-barrel grounding switch 1021a0 is closed, the grounding line 1021a0 is disconnected to perform voltage withstanding operation, so as to find out the line fault point. In order to ensure personal safety, the electromagnetic locking module is arranged to lock the unlocking grounding wire, and the grounding wire can be unlocked under the condition of ensuring no electricity.
The embodiment of the application is based on a modified GIS cable T connection cylinder circuit, combines a locking control process to respond to disconnection of line outlet end circuit breakers on two sides of the GIS cable T connection cylinder circuit, sequentially disconnects a transformer substation circuit breaker and a T connection cylinder isolating switch to form a closed power loop, and then an electromagnetic locking module keeps a grounding point of the T connection cylinder in a locking state. And the electromagnetic locking module ensures that a worker can disconnect the grounding wire under the condition of no current, so that safety accidents are avoided, and the technical problem of low safety degree of the existing GIS cable T connecting cylinder circuit is solved.
The above is a detailed description of a first embodiment of a GIS cable T-socket circuit provided by the present application, and the following is a detailed description of a second embodiment of a GIS cable T-socket circuit provided by the present application.
Referring to fig. 2 to 4, based on the first embodiment, a GIS cable tee circuit according to a second embodiment of the present application includes:
further, step 102 in the first embodiment is followed by:
103, disconnecting the T-shaped connecting cylinder grounding switch 1021A0 when the electromagnetic locking module is in an unlocked state;
and step 104, after the T-shaped connecting cylinder grounding switch 1021A0 is disconnected, closing the T-shaped connecting cylinder disconnecting switch 1021A, the substation circuit breaker 102 and the outlet end circuit breaker in sequence.
And (5) after the fault line is overhauled, the whole section of the line is recovered to run. After the line fails, the 110kV outgoing line circuit breakers of the 220kV stations on the two sides trip, and the line quits operation. After the inspection is completed, the T-cylinder internal grounding switch 1021A0 is opened, and the T-cylinder disconnecting switch 1021A is closed. And the 220kV outlet end circuit breaker on two sides and the 110kV substation circuit breaker 102 are closed, and the line is normally operated.
The method comprises the following steps: a T-connection tube grounding switch 1021A 0; there is no logical condition.
The actions are as follows: a T-connection cylinder isolating switch 1021A is closed; conditions are as follows: t-barrel grounding switch 1021a 0.
Further, the electromagnetic locking module 103 is embodied as an electromagnetic lock.
Further, still include: an electrical latching module;
the electric locking module sets up between the first end of T connects a section of thick bamboo isolator and the first end of transformer substation's circuit breaker, and this embodiment is through adopting electric shutting simultaneously for the transformer substation's circuit breaker 102 need not the transformer substation adversion to overhaul the state and can the operating line change overhaul after tripping, has simplified the operation of transformer substation side.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (2)
1. A GIS cable tee circuit, comprising: the system comprises a T-connection cylinder grounding switch, a T-connection cylinder isolating switch, a transformer substation circuit breaker and an electromagnetic locking module;
the transformer substation circuit breaker is arranged at a transformer substation connecting end of the GIS cable T connecting cylinder circuit;
the first end of the T-connection tube isolating switch is connected with the first end of the transformer substation circuit breaker, and the second end of the T-connection tube isolating switch is connected with the first end of the T-connection tube grounding switch;
the second end of the T-connection cylinder grounding switch is connected with a grounding end through the electromagnetic locking module, and the electromagnetic locking module is used for locking the grounding point of the T-connection cylinder when current is detected;
wherein, GIS cable T connects shutting control of a section of thick bamboo circuit to include:
responding to the disconnection of circuit breakers at the wire outlet ends on two sides of the GIS cable T-connection tube circuit, and sequentially disconnecting the transformer substation circuit breaker and the T-connection tube disconnecting switch to form a closed power loop;
when the T-connection cylinder isolating switch is disconnected, the T-connection cylinder grounding switch is closed, and the grounding point of the T-connection cylinder is kept in a locking state through the electromagnetic locking module until no current passes through;
when the electromagnetic locking module is in a non-locking state, the T-shaped connecting cylinder grounding switch is disconnected;
and after the T-connection tube grounding switch is disconnected, closing the T-connection tube isolating switch, the transformer substation circuit breaker and the outlet end circuit breaker in sequence.
2. The GIS cable tee connector circuit of claim 1, wherein the electromagnetic locking module is embodied as an electromagnetic lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928739.4A CN112054382B (en) | 2020-09-07 | 2020-09-07 | GIS cable T connects a section of thick bamboo circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010928739.4A CN112054382B (en) | 2020-09-07 | 2020-09-07 | GIS cable T connects a section of thick bamboo circuit |
Publications (2)
| Publication Number | Publication Date |
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| CN112054382A CN112054382A (en) | 2020-12-08 |
| CN112054382B true CN112054382B (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010928739.4A Active CN112054382B (en) | 2020-09-07 | 2020-09-07 | GIS cable T connects a section of thick bamboo circuit |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110208644A (en) * | 2019-05-15 | 2019-09-06 | 广州供电局有限公司 | GIS cable machinery |
| CN114217181B (en) * | 2021-11-25 | 2024-04-12 | 广东电网有限责任公司广州供电局 | GIS cable sleeve test window |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3907998B2 (en) * | 2001-02-09 | 2007-04-18 | 株式会社東芝 | Substation protection control system |
| CN202736379U (en) * | 2012-06-11 | 2013-02-13 | 冀北电力有限公司 | Transformer station comprehensive automation skill training system |
| CN207938480U (en) * | 2018-01-09 | 2018-10-02 | 青岛海洋电气设备检测有限公司 | A kind of passive blocking device of 10kV open lockings incoming line cabinet |
| CN110208644A (en) * | 2019-05-15 | 2019-09-06 | 广州供电局有限公司 | GIS cable machinery |
| CN210110593U (en) * | 2019-05-16 | 2020-02-21 | 天津平高智能电气有限公司 | Earthing switch operating mechanism, locking electromagnet module and device |
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| CN112054382A (en) | 2020-12-08 |
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