CN207819446U - A kind of five anti-loop control systems for hybrid gas insulation switchgear - Google Patents
A kind of five anti-loop control systems for hybrid gas insulation switchgear Download PDFInfo
- Publication number
- CN207819446U CN207819446U CN201820048337.3U CN201820048337U CN207819446U CN 207819446 U CN207819446 U CN 207819446U CN 201820048337 U CN201820048337 U CN 201820048337U CN 207819446 U CN207819446 U CN 207819446U
- Authority
- CN
- China
- Prior art keywords
- control
- switch
- loop
- prevention
- measurement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009413 insulation Methods 0.000 title abstract description 4
- 238000005259 measurement Methods 0.000 claims description 31
- 238000010276 construction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000003595 mist Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
The utility model discloses a kind of five anti-loop control systems for hybrid gas insulation switchgear, described device includes：Power supply, disconnecting switch control loop control switching device and measure and control device；Wherein, the measure and control device is connected by cable with hybrid gas insulation switchgear ontology, and five-defence block circuit is provided in the measure and control device；Shutting-brake control switch and separating brake control switch are provided in the control switching device, the shutting-brake control switch and separating brake control switch are connected with the disconnecting switch control loop respectively；The disconnecting switch control loop and the five-defence block circuit in series, the control switching device and the five-defence block circuit are separately connected the anode and cathode of the power supply., can be cost-effective by the system, reduce cable amount, reduce difficulty of construction, it can be ensured that the disconnecting switch safe operation in equipment prevents disconnecting switch maloperation, reduces to equipment damage.
Description
The technical field is as follows:
the utility model relates to a relay protection technical field especially relates to a five prevent return circuit control system for mist insulated switchgear.
Background art:
with the continuous expansion of the scale of the power grid, the number of ultrahigh voltage transformer substations is greatly increased. Due to the pressure of the environment and the occupied land, the type selection of the main equipment of the ultrahigh voltage 500kV transformer substation is very important in China. The hybrid gas Insulated switchgear (HGIS, hybrid gas Insulated Switch) is a novel high-voltage switchgear between a gas Insulated metal fully-enclosed switchgear (GIS) and a conventional open switchgear (AIS), and has the characteristics of small occupied area, high operation reliability, strong dirt resistance and shock resistance and the like, and meanwhile, the price is relatively low, and equipment faults are easy to repair.
In order to prevent misoperation in the process of power transformation operation, five-prevention judgment is required to be carried out when the HGIS equipment is operated, so that the operation safety is ensured. At present, operators in the station can control equipment operation by an independent five-prevention operating system through software and a lockset, and can also control the equipment operation by an electric appliance locking loop, namely, an auxiliary contact of equipment between each compartment is connected through a cable.
The inventor finds that the manufacturing cost of the five-prevention operating system is higher in the process of realizing the utility model, and the cost for preventing misoperation is increased; if an electrical locking loop is added into the HGIS equipment, a circuit breaker, a disconnecting switch, an earthing switch and the like are required to provide a plurality of original auxiliary contacts in the locking process, and the auxiliary contacts are difficult to increase due to the limited capacity of a mechanism box. In addition, the electric locking loop is complex, auxiliary contacts of equipment among all compartments need to be connected through cables, the construction difficulty is high, the cable quantity is large, and the cost is high.
The invention content is as follows:
an object of the utility model is to provide a five prevent return circuit control system for mist insulated switchgear for solve the problem that exists among the above-mentioned prior art.
The utility model discloses by following technical scheme implement:
the embodiment of the utility model provides a five prevent return circuit control system for mist insulated switchgear, include:
the power supply, the isolating switch control loop, the control switch device and the measurement and control device; the measurement and control device is connected with the mixed gas insulated switchgear body through a cable, and a five-prevention locking loop is arranged in the measurement and control device; a closing control switch and an opening control switch are arranged in the control switch device, and are respectively connected with the isolating switch control loop in series; the isolating switch control loop is connected with the five-prevention locking loop in series, and the control switch device and the five-prevention locking loop are respectively connected with the anode and the cathode of the power supply.
Further, be provided with collection system in the mist insulation switchgear body, collection system pass through the cable with measurement and control device links to each other, collection system is arranged in gathering the normally open normally closed position information of circuit breaker and switch in the equipment.
Furthermore, be provided with logic judgment module in the measurement and control device, logic judgment module's one end pass through the cable with collection system links to each other, the other end with isolator control circuit links to each other, including in advance according to the operation demand of equipment compile in the logic judgment module the five-prevention logic relation of circuit breaker and switch.
Furthermore, an isolating switch is arranged in the isolating switch control loop, and the isolating switch is connected with the five-prevention locking loop in series.
Furthermore, a five-prevention unlocking loop is further arranged in the measurement and control device and connected in parallel on the five-prevention locking loop.
Furthermore, a remote control loop is further arranged in the measurement and control device, and a handle switch is arranged on the remote control loop.
The utility model has the advantages that:
the embodiment of the utility model provides a five prevent return circuit control system for gas insulated switchgear that mix does not need independent five to prevent operating system or electric closedown return circuit, practices thrift the cost, has reduced the cable volume, reduces the construction degree of difficulty; meanwhile, the five-prevention locking loop can ensure the safe operation of the isolating switch in the mixed gas insulated switchgear, prevent the misoperation of the isolating switch, reduce the damage to the equipment and reduce the operation accidents of a power grid.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a five-prevention loop control system for a mixed gas insulated switchgear according to an embodiment of the present invention.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
First, terms related to the embodiments of the present invention are explained as follows.
The five-prevention electrical system means that electrical equipment (high-voltage switch cabinet) should have five short for preventing error functions to ensure personal and equipment safety, and the five functions of preventing error include: the circuit breaker is prevented from being mistakenly opened and closed, the isolating switch is prevented from being opened and closed under the condition of load, the grounding switch is prevented from being electrified, the circuit breaker or the isolating switch is prevented from being closed under the condition of earthing, and the circuit breaker or the isolating switch is prevented from being mistakenly inserted into an electrified interval.
The mixed gas insulated switchgear is a closed combined electrical equipment, including circuit breaker, isolating switch, earthing switch, voltage transformer, current transformer, etc.
The electric locking loop is used for connecting auxiliary contacts of equipment such as a circuit breaker, a disconnecting switch and the like to an electric operation loop such as a disconnecting switch or a grounding knife switch and the like to be locked, so that mutual locking of the switch equipment is realized.
The technical solution of the embodiment of the present invention is described in detail below.
As shown in fig. 1, an embodiment of the present invention provides a five-prevention loop control system for a mixed gas insulated switchgear, including: the power supply 10, the isolating switch control loop 20, the control switch device 30 and the measurement and control device 40.
The measurement and control device 40 is connected with the mixed gas insulated switchgear body through a cable, so that the information of the normally open and normally closed position of a circuit breaker, the information of the normally open and normally closed position of an isolating switch and the information of the normally open and normally closed position of a grounding switch in the equipment can be received; a five-prevention locking loop 41 is arranged in the measurement and control device 40 and is used for performing five-prevention logic judgment according to the normally open and normally closed position information of the circuit breaker, the normally open and normally closed position information of the isolating switch, the normally open and normally closed position information of the grounding switch and the like; the control switch device 30 is provided with a closing control switch 31 and an opening control switch 32, which are respectively used for starting closing and opening operations, and the closing control switch 31 and the opening control switch 32 are respectively connected with the isolating switch control loop 20 in series; the isolating switch control loop 20 is connected in series with the five-prevention locking loop 41, and the control switch device 30 and the five-prevention locking loop 41 are respectively connected with the positive pole and the negative pole of the power supply 10.
Optionally, can be provided with collection system in the gas mixture insulated switchgear body, collection system is used for gathering breaker normally open normally closed position information, isolator normally open normally closed position information, earthing switch normally open normally closed position information in the equipment, collection system pass through the cable with measurement and control device links to each other, thereby will the circuit breaker isolator earthing switch's positional information transmission to measurement and control device 40 in.
Further, be provided with logic judgment module in measurement and control device 40, logic judgment module's one end pass through the cable with collection system links to each other, and the other end links to each other with isolator control circuit 20, including in the logic judgment module according to the circuit breaker and the five-prevention logical relation of switch that the operation demand of equipment was worked out in advance, thereby work as logic judgment module receives the collection system gathers the circuit breaker isolator earthing switch's positional information back, can judge whether it satisfies current operating condition through above-mentioned five-prevention logical relation.
Further, an isolating switch is arranged in the isolating switch control loop 20, and the isolating switch is connected in series with the five-prevention locking loop. When the logic judgment module judges that the five-prevention logic relationship corresponding to the position information meets the current operation condition, the five-prevention locking loop 41 is started to control the closing or opening of the isolating switch connected in series with the five-prevention locking loop; when the logic judgment module judges that the five-prevention logic relationship corresponding to the position information does not meet the current operation condition, the five-prevention locking loop 41 is not started, and the isolating switch connected in series with the five-prevention locking loop is controlled not to act.
Optionally, a middle five-prevention unlocking loop 42 is further disposed in the measurement and control device 40, and the five-prevention unlocking loop 42 is connected in parallel to the five-prevention locking loop 41. The measurement and control device 40 is also provided with a remote control loop, the remote control loop is provided with a handle switch JSH, if the locking function of the isolating switch needs to be removed, the switch handle JSH on the remote control loop is just required to be switched to a closed position, and the measurement and control device is simple, convenient and easy to operate.
The working process of the five-prevention loop control system in the embodiment of the present invention is described below.
First, the disconnecting switch control circuit 20 is activated in response to the closing of the closing control switch 31 or the opening control switch 32. Specifically, the disconnecting switch operation includes a closing operation and an opening operation, and the closing control switch 31 and the opening control switch 32 are respectively connected in series with the disconnecting switch control circuit 20. In response to the closing of the closing control switch 31, the disconnector control circuit 20 is started; or, in response to the closing of the opening control switch 32, the isolation switch control loop 20 is activated.
Secondly, the measurement and control device 40 receives the position information of the circuit breaker and the switch in the mixed gas insulated switchgear, and performs five-prevention logic judgment according to the position information. Specifically, can be provided with collection system in the gas mixture insulated switchgear body, collection system gathers breaker normally open normally closed position information, isolator normally open normally closed position information, earthing switch normally open normally closed position information in the equipment, and will the circuit breaker isolator earthing switch's position information transmission is to measuring and control device 40 in. And the measurement and control device 40 performs five-prevention logic judgment according to the position information of the circuit breaker, the isolating switch and the grounding switch.
Optionally, a five-prevention logic relationship of the circuit breaker, the disconnecting switch and the grounding switch, which can be compiled in advance according to the operation requirement of the equipment, is used as a reference for performing five-prevention logic judgment.
And finally, if the current operation condition is met, starting the five-prevention locking loop 41 to control the closing or opening of the disconnecting switch control loop 20. Specifically, when the switching-on operation is performed, if the current operation condition is met, the five-prevention locking loop 41 is started to control the disconnecting switch connected in series with the five-prevention locking loop to switch on; when the switching-on and switching-off operation is carried out, if the current operation condition is met, the five-prevention locking loop 41 is started to control the disconnecting switch connected with the five-prevention locking loop in series to switch off. If the current operation condition is not met, the five-prevention locking loop 41 is not started, and the isolating switch does not act.
Alternatively, the switch knob in the remote control circuit may be previously opened so that the five-prevention unlocking circuit 42 is in the opened state. Specifically, the five-prevention unlocking circuit 42 is connected in parallel with the five-prevention locking circuit 41, and when the five-prevention locking circuit 41 needs to be opened for five-prevention protection, the five-prevention unlocking circuit 42 is kept in a disconnected state. If the locking function of the isolating switch needs to be removed, the switch handle on the remote control loop is turned to the closed position, so that the five-prevention unlocking loop 42 is in the closed state, and the method is simple, convenient and easy to operate.
A switching-on process:
by turning the switch handle JSH to the off position, the five-prevention unlocking circuit 42 is in the off state. The closing control switch 31 is closed and the disconnector control circuit 20 is started. The measurement and control device 40 performs five-prevention logic judgment according to the position information of the circuit breaker, the disconnecting switch and the grounding switch, and if the current operation condition is met, the five-prevention locking loop 41 is started to control the disconnecting switch in the disconnecting switch control loop 20 to be switched on; if the current operation condition is not met, the five-prevention locking loop 41 is not started, and the disconnecting switch in the disconnecting switch control loop 20 is controlled not to act.
The brake opening process:
by turning the switch handle JSH to the off position, the five-prevention unlocking circuit 42 is in the off state. The closing control switch 31 is closed and the disconnector control circuit 20 is started. And the measurement and control device (6) starts to carry out five-prevention logic judgment on the collected information of the circuit breaker, the isolating switch and the grounding switch. The measurement and control device 40 performs five-prevention logic judgment according to the position information of the circuit breaker, the disconnecting switch and the grounding switch, and if the current operation condition is met, the five-prevention locking loop 41 is started to control the disconnecting switch in the disconnecting switch control loop 20 to open; if the current operation condition is not met, the five-prevention locking loop 41 is not started, and the disconnecting switch in the disconnecting switch control loop 20 is controlled not to act.
The embodiment of the utility model provides a five prevent return circuit control system for mist insulated switchgear, include: the power supply, the isolating switch control loop, the control switch device and the measurement and control device; the measurement and control device is connected with the mixed gas insulated switchgear body through a cable, and a five-prevention locking loop is arranged in the measurement and control device; a closing control switch and an opening control switch are arranged in the control switch device, and are respectively connected with the isolating switch control loop in series; the isolating switch control loop is connected with the five-prevention locking loop in series, and the control switch device and the five-prevention locking loop are respectively connected with the anode and the cathode of the power supply. By the system, an independent five-prevention operating system or an electric locking loop is not needed, so that the cost is saved, the cable quantity is reduced, and the construction difficulty is reduced; meanwhile, the five-prevention locking loop can ensure the safe operation of the isolating switch in the mixed gas insulated switchgear, prevent the misoperation of the isolating switch, reduce the damage to the equipment and reduce the operation accidents of a power grid.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A five-prevention loop control system for a mixed gas insulated switchgear, comprising:
the power supply, the isolating switch control loop, the control switch device and the measurement and control device; wherein,
the measurement and control device is connected with the mixed gas insulated switchgear body through a cable, and a five-prevention locking loop is arranged in the measurement and control device;
a closing control switch and an opening control switch are arranged in the control switch device, and are respectively connected with the isolating switch control loop in series;
the isolating switch control loop is connected with the five-prevention locking loop in series, and the control switch device and the five-prevention locking loop are respectively connected with the anode and the cathode of the power supply.
2. The system according to claim 1, wherein a collection device is arranged in the mixed gas insulated switchgear body, the collection device is connected with the measurement and control device through a cable, and the collection device is used for collecting the information of normally open and normally closed positions of a breaker and a switch in the equipment.
3. The system according to claim 2, wherein a logic judgment module is arranged in the measurement and control device, one end of the logic judgment module is connected with the acquisition device through a cable, the other end of the logic judgment module is connected with the disconnecting switch control loop, and the logic judgment module comprises a five-prevention logic relation of the circuit breaker and the switch which is compiled in advance according to the operation requirement of the equipment.
4. The system of claim 3, wherein a disconnecting switch is arranged in the disconnecting switch control loop and is connected with the five-prevention locking loop in series.
5. The system according to any one of claims 1-4, characterized in that a five-prevention unlocking loop is further arranged in the measurement and control device, and the five-prevention unlocking loop is connected in parallel to the five-prevention locking loop.
6. The system according to claim 5, wherein a remote control loop is further arranged in the measurement and control device, and a handle switch is arranged on the remote control loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820048337.3U CN207819446U (en) | 2018-01-10 | 2018-01-10 | A kind of five anti-loop control systems for hybrid gas insulation switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820048337.3U CN207819446U (en) | 2018-01-10 | 2018-01-10 | A kind of five anti-loop control systems for hybrid gas insulation switchgear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207819446U true CN207819446U (en) | 2018-09-04 |
Family
ID=63326767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820048337.3U Active CN207819446U (en) | 2018-01-10 | 2018-01-10 | A kind of five anti-loop control systems for hybrid gas insulation switchgear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207819446U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853969A (en) * | 2019-11-20 | 2020-02-28 | 国网福建省电力有限公司检修分公司 | Auxiliary device for preventing misoperation of high voltage isolation switch |
| CN112201503A (en) * | 2020-10-29 | 2021-01-08 | 中国电力工程顾问集团西北电力设计院有限公司 | Locking logic loop for 750kV line additionally provided with current-limiting reactor wiring |
| CN113641122A (en) * | 2021-08-06 | 2021-11-12 | 广西电网有限责任公司电力科学研究院 | Interlocking logic visualization method and device for intelligent high-voltage switch |
-
2018
- 2018-01-10 CN CN201820048337.3U patent/CN207819446U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853969A (en) * | 2019-11-20 | 2020-02-28 | 国网福建省电力有限公司检修分公司 | Auxiliary device for preventing misoperation of high voltage isolation switch |
| CN112201503A (en) * | 2020-10-29 | 2021-01-08 | 中国电力工程顾问集团西北电力设计院有限公司 | Locking logic loop for 750kV line additionally provided with current-limiting reactor wiring |
| CN113641122A (en) * | 2021-08-06 | 2021-11-12 | 广西电网有限责任公司电力科学研究院 | Interlocking logic visualization method and device for intelligent high-voltage switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2501136C2 (en) | Medium voltage switchgear cell | |
| CN201893540U (en) | Intelligent radio network dispatching digital-type boundary controller complete equipment | |
| CN204179552U (en) | Intelligent ring main unit | |
| CN207819446U (en) | A kind of five anti-loop control systems for hybrid gas insulation switchgear | |
| CN202333541U (en) | Car-mounted mobile transformer substation | |
| CN213125124U (en) | Mine explosion-proof intelligent high-voltage complete set distribution device | |
| CN211456660U (en) | Multi-power output circuit breaker control protection device | |
| CN203232841U (en) | Intelligent vacuum circuit breaker configured with independent zero-sequence current transformer | |
| CN110021924A (en) | A kind of five anti-loop control systems and method for hybrid gas insulation switchgear | |
| CN108767727A (en) | A kind of 12kV assembleds switchgear | |
| CN2867561Y (en) | Mining explosion-proof vacuum feed switch | |
| CN207910350U (en) | A kind of intelligent environmentally friendly gas-insulated ring network cabinet | |
| CN206865005U (en) | Inflatable ac metal closing switch gear | |
| CN210325639U (en) | Isolator safety control device and power supply system | |
| CN208257496U (en) | Dual-power automatic switching formula heating tape current supply circuit | |
| CN201421958Y (en) | Armored removable AC metal-enclosed switch equipment | |
| CN208257409U (en) | Double-bus back brake anti-misoperation control device and double-bus power supply system | |
| CN208367078U (en) | A kind of electrification in high voltage control instructions module | |
| CN218633339U (en) | High-voltage direct current switching device | |
| CN113488874A (en) | Layout structure of 10kV full-handcart hybrid direct-current load complete switch | |
| CN204905742U (en) | Middling pressure looped netowrk vacuum circuit breaker cabinet | |
| CN217159267U (en) | 10KV PT cabinet breakdown safety state feedback circuit | |
| CN217545337U (en) | Switch box | |
| CN210245392U (en) | Novel GIS keeps apart ground connection cancellation self-sustaining return circuit | |
| CN223297340U (en) | A fully insulated incoming line structure for a step-up substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |