CN206650433U - High-speed switch extinguishing arc and protecting human body system - Google Patents
High-speed switch extinguishing arc and protecting human body system Download PDFInfo
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- CN206650433U CN206650433U CN201720287276.1U CN201720287276U CN206650433U CN 206650433 U CN206650433 U CN 206650433U CN 201720287276 U CN201720287276 U CN 201720287276U CN 206650433 U CN206650433 U CN 206650433U
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Abstract
It the utility model is related to a kind of high-speed switch extinguishing arc and protecting human body system.It is characterized in：Including device for selecting faulty in station, device for selecting faulty is connected with stand outer arc-extinction device, one-level substation line selection apparatus and two level substation line selection apparatus respectively by message center module in the station；Wherein device for selecting faulty includes the first controller in station, first controller is connected by voltage acquisition module with bus so as to gather bus three-phase voltage and bus residual voltage, first controller is also connected so as to gather the zero-sequence current of each bar outlet, in addition to the first split-phase high-speed switch by current acquisition module with transformer station each bar outlet.The head and end for the earth point that breaks down is grounded and fault ground electric current is shifted in 10ms by the utility model by split-phase high-speed switch, and the voltage that fault restriction is grounded is limited in below 36V, serves the effect of effective extinguishing arc and protecting human body.
Description
Technical field
It the utility model is related to a kind of high-speed switch extinguishing arc and protecting human body system.
Background technology
The selection of neutral grounding in distribution power network and Operation of Electric Systems reliability, enthusiasm and equipment life security
It is closely related.China's neutral grounding in distribution power network have it is earth-free, through grounding through arc and it is resistive ground connection three kinds.According to state
Family's standard《GB 50613-2010》With State Grid Corporation of China's company standard《QGDW 1738-2012》Related opinions, neutral point
The main factor such as type according to voltage class, unbalanced earth fault capacitance current, distribution line of earthing mode selects.Wherein disappear
Arc coil earthing mode is at this stage in power distribution network generally by the way of.
The arc suppression coil of access neutral point can compensate the electric current of single-phase earthing, and electric arc is easy to extinguish and should not restrike, contracted
The short intermittency electric arc's earthing over-voltage duration, suppress the generation of arc grounding over-voltage.But grounding through arc mode is deposited
In deficiency：1) arc suppression coil is generally operational in overcompensation state, in the case where system capacitive current is excessive, the residual of trouble point
It is unsatisfactory for system safety operation requirement；Arc suppression coil can only compensate power frequency component, when system is through grounding through arc, flow through failure
The electric current of point also has higher-order of oscillation component except power frequency component, and in power current zero passage, high frequency oscillating current still has very big width
Value, can not accomplish complete extinguishing arc；2) fault current characteristics diminish after arc suppression coil compensation, cause failure line selection accuracy rate to drop
It is low, carry out failture evacuation to operation maintenance personnel and bring certain difficulty；3) cable line fault is typically permanent fault,
In the more distribution network of cable run, the arc of extinguishing repeatedly of arc suppression coil compensation mode can expand accident scope, cause cable
Insulation destroys completely；4) arc suppression coil compensation mode is the capacity current come compensation system by inductance current, can not be in human body
Accomplish real electric current transfer under electrocution conditions, personal safety can not be effectively protected.
At present, from the point of view of domestic and international singlephase earth fault treatment technology and protecting human body technology, also without a kind of device energy
Enough it is effectively protected the safety that the 10kV or 35kV circuits person gets an electric shock.
Utility model content
The purpose of this utility model is to provide a kind of high-speed switch extinguishing arc and protecting human body system, can play extinguishing arc and people
The effect of body protection, so as to be effectively protected the safety that the 10kV or 35kV circuits person gets an electric shock.
A kind of high-speed switch extinguishing arc and protecting human body system, it is particular in that：, should including device for selecting faulty in station
In standing device for selecting faulty by message center module respectively with outer arc-extinction device, one-level substation line selection apparatus and the two level substation of standing
Line selection apparatus connects；Wherein device for selecting faulty includes the first controller in station, and first controller passes through voltage acquisition module
Be connected with bus so as to gather bus three-phase voltage and bus residual voltage, first controller also by current acquisition module with
Transformer station's each bar outlet connection is so as to gather the zero-sequence current of each bar outlet, in addition to the first split-phase high-speed switch, this first point
The input of phase high-speed switch is connected with bus three and the output end of the first split-phase high-speed switch is grounded by protection module,
And the control terminal of the first split-phase high-speed switch is connected with the first foregoing controller；Outer arc-extinction device of wherein standing includes second
Controller, the second controller are connected with the first foregoing controller, in addition to the second split-phase high-speed switch, and second split-phase is fast
The input of speed switch is connected with distribution line three and the output end of the second split-phase high-speed switch is grounded by protection module,
And the control terminal of the second split-phase high-speed switch is connected with foregoing second controller.
Wherein one-level substation line selection apparatus includes the first data processing module, and first data processing module is respectively with first
Power module, the first display module, the first route selection module connect with first communication module, wherein the first route selection module and a fraction
Stand the zero-sequence current loop connection of each feeder line in ring main unit, wherein first communication module is connected by optical fiber with the first controller；
Wherein two level substation line selection apparatus includes the second data processing module, second data processing module respectively with second source mould
Block, the second display module, the second route selection module connect with second communication module, wherein the second route selection module and two level substation looped network
The zero-sequence current loop connection of each feeder line in cabinet, wherein second communication module is connected by optical fiber with the first controller.
Wherein protection module uses arrester.
Failure described by the utility model is mutually grounded extinguishing arc and protecting human body system mainly by route selection in station in short-term
Arc-extinction device quickly judges that singlephase earth fault is separate and faulty line, passes through the split-phase high-speed switch in line selection apparatus in station
Failure is mutually grounded in short-term, and by failure is separate and faulty line route selection is transferred to the outer arc-extinction device in station by optical fiber.Stand outer disappear
Arc device receives after signal quickly communicated split-phase high-speed switch ground connection by failure, and the utility model will break down ground connection
The head and end of point is grounded by split-phase high-speed switch and fault ground electric current is shifted in 10ms, and fault restriction is grounded
Voltage is limited in below 36V, serves the effect of effective extinguishing arc and protecting human body.
Brief description of the drawings
Fig. 1 is the schematic diagram of device for selecting faulty in station in the utility model；
Fig. 2 is the schematic diagram of the outer arc-extinction device in station in the utility model；
Fig. 3 is schematic diagram of the present utility model.
Embodiment
As shown in Figure 1,2 and 3, the utility model provides a kind of high-speed switch extinguishing arc and protecting human body system, including station
Interior device for selecting faulty, in the station device for selecting faulty by message center module respectively with outer arc-extinction device, the one-level substation of standing
Line selection apparatus connects with two level substation line selection apparatus；
Wherein device for selecting faulty includes the first controller in station, and first controller passes through voltage acquisition module and bus
So as to gather bus three-phase voltage and bus residual voltage, first controller also passes through current acquisition module and transformer station for connection
So as to gather the zero-sequence current of each bar outlet, in addition to the first split-phase high-speed switch, first split-phase is quick for each bar outlet connection
The input of switch is connected with bus three and the output end of the first split-phase high-speed switch is grounded by protection module, and should
The control terminal of first split-phase high-speed switch is connected with the first foregoing controller；
Outer arc-extinction device of wherein standing includes second controller, and the second controller is connected with the first foregoing controller, also
Including the second split-phase high-speed switch, the input of the second split-phase high-speed switch is connected and second split-phase with distribution line three
The output end of high-speed switch is grounded by protection module, and the control terminal of the second split-phase high-speed switch and the second foregoing control
Device connection processed.
Wherein one-level substation line selection apparatus is by the first power module, the first display module, the first route selection module, the first data
Processing module and first communication module composition, the first power module part provide various voltages needed for device circuit, while the mould
Block plate is integrated with relay, is used for warning output；First display module part is used to gather opening residual voltage, display, number
According to preservation and data remote function；First route selection module is responsible for the sampling in each feeder line zero-sequence current loop in the first ring main unit；The
One data processing module is responsible for the differentiation of fault feeder；The fault feeder information that first communication module is responsible for determining passes through light
Fibre is transferred to the first controller.
Wherein two level substation line selection apparatus is by second source module, the second display module, the second route selection module, the second data
Processing module and second communication module composition, second source module section provide various voltages needed for device circuit, while the mould
Block plate is integrated with relay, is used for warning output；Second display module part is used to gather opening residual voltage, display, number
According to preservation and data remote function；Second route selection module is responsible for the sampling in each feeder line zero-sequence current loop in the second ring main unit；The
Two data processing modules are responsible for the differentiation of fault feeder；The fault feeder information that second communication module is responsible for determining passes through light
Fibre is transferred to the first controller.
Wherein protection module uses arrester so as to carry out overvoltage protection to device for selecting faulty in station.
The utility model patent is described in further detail below in conjunction with accompanying drawing and specific implementation method：
Device for selecting faulty in station as shown in Figure 1, it is installed on substation bus bar, mainly includes the first controller；
First split-phase high-speed switch；Protection module.Wherein the first controller receive outside current and voltage signals and to carry out failure separate
With the judgement of faulty line.Outside current and voltage signals include bus three-phase voltage Ua, Ub, Uc and bus residual voltage U0,
And zero-sequence current I01~I0n of each bar outlet of transformer station.Wherein n is the bar number of feeder line.First controller differentiates the phase that is out of order
After not, corresponding order is sent to the first split-phase high-speed switch, failure was communicated into high-speed switch ground connection, plays transfer failure electricity
Stream eliminates the effect of arc overvoltage.
First split-phase high-speed switch is used based on electromagnetic repulsion mechanism as operating mechanism to improve the speed of action.First
Controller carries out failure and mutually differentiates and control the time of the first split-phase high-speed switch input to be less than 10ms.Protection module is mainly to station
Interior device for selecting faulty carries out overvoltage, short-circuit protection.
Arc-extinction device outside station as shown in Figure 2, it is installed on 10kV or 35kV distribution lines, main to include the second control
Device；Second split-phase high-speed switch；Protection module.When occurring singlephase earth fault on the line, selected in second controller receiving terminal
The control signal of line arc-extinction device, and control separate action corresponding to the second split-phase high-speed switch.In second controller receiving terminal
The order of device for selecting faulty simultaneously controls the time of the second split-phase high-speed switch input to be less than 10ms.Second split-phase high-speed switch is adopted
By the use of based on electromagnetic repulsion mechanism the speed of action is improved as operating mechanism.Protection module is mainly to device for selecting faulty in station
Carry out overvoltage, short-circuit protection.
Failure as shown in Figure 3 is mutually grounded extinguishing arc and protecting human body system construction drawing in short-term, main to disappear including route selection in station
Arc device；Stand outer arc-extinction device；One-level substation line selection apparatus；Two level substation line selection apparatus；Message center module.
Device for selecting faulty is substantially carried out being to carry out that failure is separate and faulty line when singlephase earth fault occurs in standing
Differentiation, and control split-phase high-speed switch to put into, the control command of device for selecting faulty in the main receiving terminal of outer arc-extinction device of standing,
Split-phase high-speed switch input is controlled, one-level substation line selection apparatus and two level substation line selection apparatus are then to coordinate route selection extinguishing arc dress in station
Put and carry out that failure is separate and the differentiation of faulty line.Device for selecting faulty, outer arc-extinction device of standing, one-level substation route selection dress in standing
Put, information exchange is carried out by message center module between two level substation line selection apparatus, communicated using optical fiber solutions.
Application method and operation principle of the present utility model are：
When fault ground point as shown in Figure 3 mutually electric shock accidents occurs, the electric current of fault feeder will change, this
When station in device for selecting faulty will detect that curent change and judge faulty line and separate, while pass through the first controller
The failure of first split-phase high-speed switch is mutually grounded；One-level substation line selection apparatus can also detect curent change and judge to be out of order
Circuit, and by transmitting fault information to device for selecting faulty in station；Two level substation line selection apparatus can detect all feeder currents
Change and judge higher level's line fault, and by transmitting fault information to device for selecting faulty in station.Route selection extinguishing arc in standing
After device collects one-level substation line selection apparatus and two level substation line selection apparatus, fault feeder is determined, while send information to station
The failure of second split-phase high-speed switch is mutually grounded by outer arc-extinction device, outer arc-extinction device of standing by second controller again.
Now break down earth point it is separate by the first split-phase high-speed switch and the second split-phase high-speed switch ground connection after,
The separate upper voltage of failure reduces to essentially zero, you can plays a part of protecting personal safety.
The content that this specification is not described in detail belongs to prior art known to professional and technical personnel in the field.
Claims (3)
1. a kind of high-speed switch extinguishing arc and protecting human body system, it is characterised in that：Including device for selecting faulty in station, selected in the station
Line arc-extinction device is filled with stand outer arc-extinction device, one-level substation line selection apparatus and the route selection of two level substation respectively by message center module
Put connection；
Wherein device for selecting faulty includes the first controller in station, and first controller is connected by voltage acquisition module with bus
So as to gather bus three-phase voltage and bus residual voltage, first controller also passes through current acquisition module and each bar of transformer station
Outlet is connected so as to gather the zero-sequence current of each bar outlet, in addition to the first split-phase high-speed switch, the first split-phase high-speed switch
Input be connected with bus three and the output end of the first split-phase high-speed switch is grounded by protection module, and this first
The control terminal of split-phase high-speed switch is connected with the first foregoing controller；
Outer arc-extinction device of wherein standing includes second controller, and the second controller is connected with the first foregoing controller, in addition to
Second split-phase high-speed switch, the input of the second split-phase high-speed switch is connected with distribution line three and second split-phase is quick
The output end of switch is grounded by protection module, and the control terminal of the second split-phase high-speed switch and foregoing second controller
Connection.
2. high-speed switch extinguishing arc as claimed in claim 1 and protecting human body system, it is characterised in that：Wherein one-level substation route selection
Device includes the first data processing module, first data processing module respectively with the first power module, the first display module,
One route selection module connects with first communication module, wherein the first route selection module and the zero sequence electricity of each feeder line in one-level substation ring main unit
Road connection is flowed back to, wherein first communication module is connected by optical fiber with the first controller；
Wherein two level substation line selection apparatus includes the second data processing module, second data processing module respectively with second source
Module, the second display module, the second route selection module connect with second communication module, wherein the second route selection module and two level substation ring
The zero-sequence current loop connection of each feeder line in net cabinet, wherein second communication module is connected by optical fiber with the first controller.
3. high-speed switch extinguishing arc as claimed in claim 1 and protecting human body system, it is characterised in that：Wherein protection module uses
Arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287276.1U CN206650433U (en) | 2017-03-22 | 2017-03-22 | High-speed switch extinguishing arc and protecting human body system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720287276.1U CN206650433U (en) | 2017-03-22 | 2017-03-22 | High-speed switch extinguishing arc and protecting human body system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650433U true CN206650433U (en) | 2017-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720287276.1U Expired - Fee Related CN206650433U (en) | 2017-03-22 | 2017-03-22 | High-speed switch extinguishing arc and protecting human body system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206650433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981864A (en) * | 2017-03-22 | 2017-07-25 | 国家电网公司 | High-speed switch extinguishing arc and protecting human body system |
-
2017
- 2017-03-22 CN CN201720287276.1U patent/CN206650433U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106981864A (en) * | 2017-03-22 | 2017-07-25 | 国家电网公司 | High-speed switch extinguishing arc and protecting human body system |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171117 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |