CN201029199Y - Synthetic controller of high voltage switch - Google Patents
Synthetic controller of high voltage switch Download PDFInfo
- Publication number
- CN201029199Y CN201029199Y CNU2006200517095U CN200620051709U CN201029199Y CN 201029199 Y CN201029199 Y CN 201029199Y CN U2006200517095 U CNU2006200517095 U CN U2006200517095U CN 200620051709 U CN200620051709 U CN 200620051709U CN 201029199 Y CN201029199 Y CN 201029199Y
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Abstract
The utility model relates to a comprehensive controller for high voltage switch, comprising a MCU, a power circuit, a sampling circuit, a storage circuit and a parameter set code dialing switch. The power circuit takes a current transformer circuit from which the voltage is gained through a transformer to be supplied to the MCU and the driving of the switch off relay. The MCU and the switch off relay can operate as long as any phase has current. The sampling circuit mainly consists of a phase current and zero-sequence current transformer. The MCU detects the three-phase current and the zero-sequence current through the sampling circuit. The storage circuit takes an energy storage capacitor which can be charged fully in extremely short time as long as any one phase has current. The parameter set code dialing switch takes a controller which sets the time of three-piece protection, and the parameter of the phase current and the zero-sequence current. The MSU, that is, the microcontroller, estimates the switch is switched off or not through the sampling phase current and the zero-sequence current.
Description
Technical field
The utility model relates to a kind of high-voltage switch gear composite control apparatus, refers in particular to a kind of device that switch phase current and zero-sequence current are detected of being used for.It can detect switch phase current and zero-sequence current.When any one mutually or zero-sequence current when undesired, can be by setting requirement control switch separating brake, with effective protection switch and separate emergency area.
Background technology
At present, the high-voltage switch gear of domestic application is crossed stream controller to be had following several: 1, the controller that shoves of single anti-surge: it only plays shunting action in the very short time that switch closes a floodgate, and switch cuts little ice after closing a floodgate; 2, the analog controller that shoves: it rose the shunting action in the very short time of closing a floodgate at switch, during switch work, then can interiorly at a fixed time play shunting action equally if run into big electric current; 3, microcontroller formula syllogic is crossed stream controller: it except the function that possesses controller in the past, also have by the current segmenting defencive function-when electric current in normal range (NR), except the time-delay of combined floodgate surge, controller is not done any operation; When electric current reaches setting current and during less than the quick-break electric current, controller will carry out the overcurrent time-delay; To carry out the quick-break time-delay when electric current reaches the quick-break electric current, handle as if the still undesired separating brake that then carries out of electric current the time-delay back.
Above controller all belongs to the function simple type except the third function is strong.Although the third function is stronger, when also exist lacking some phase current, sometimes can not separating brake, and can not detect three-phase imbalance.Therefore necessary this is improved.
The utility model content
The purpose of this utility model is to cross at existing high-voltage switch gear the deficiency of stream controller, proposes a kind of multi-functional detection that has, and the high-voltage switch gear that can detect three-phase equilibrium is crossed stream controller.
The technical scheme that the utility model adopted is: a kind of high-voltage switch gear general controller that has phase current and the protection of zero-sequence current syllogic.It utilizes the transformer induced secondary current that comes out of switching current as power supply source and checked object, produces the corresponding voltage signal by current sensor again, handles the back, splits to close and carry out phase current and detect protection with microcontroller; It can also the detection system zero-sequence current in addition, splits to close and carries out the phase current unbalance protection.Controller obtains power supply from current transformer; and controller is monitored to judge whether electric current is normal each phase current; and can obtain the required store energy of threading off from any phase current mutual inductor; promptly when any one has electricity mutually; controller all can get electric work and can realize threading off, thereby has realized the three-phase protective on the straight positive meaning.
Structure of the present utility model is: a kind of high-voltage switch gear general controller comprises that MCU, power circuit, sample circuit, accumulator, parameter are provided with parts such as toggle switch.Described power circuit is a current transformer circuit, obtains the driving use of voltage for MCU and separating brake relay by transformer from current transformer, and needing only any one has electric current mutually, and then MCU and separating brake relay just can be worked; Described sample circuit is that phase current and zero-sequence current current transformer are main the composition, and MCU can detect three-phase current and zero-sequence current by sample circuit; Described accumulator is a storage capacitor, and needing only any one has electric current mutually, and storage capacitor just can be full of in the extremely short time.Must separating brake the time, the separating brake unit action of MCU control, the energy abrupt release on the electric capacity cause separating brake to tripping coil when electric current is undesired; It is controller that described parameter is provided with toggle switch.Carry out the time of syllogic protection and the setting of phase current and zero-sequence current parameter by it.The parameter that controller is set has: surge delay value, phase current overcurrent delay value, phase current quick-break delay value, phase current quick-break current value, zero-sequence current overcurrent delay value, zero-sequence current quick-break delay value and zero-sequence current quick-break current value; Described MCU, i.e. microcontroller, it is by sampling phase current and zero-sequence current, judges whether separating brake of switch.
Described high-voltage switch gear general controller can be carried out perfect phase current and zero-sequence current to high-voltage switch gear and be carried out the syllogic protection.It is distribution source and obtain power supply from current transformer and use for controller in addition.Controller is monitored to judge whether electric current is normal each phase current in addition; and can obtain the required store energy of threading off from any phase current mutual inductor; promptly when any one has electricity mutually; controller all can get electric work and can realize threading off, thereby has realized three-phase protective truly.
Description of drawings
Fig. 1 is an electrical schematic of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
By accompanying drawing as can be seen, the utility model is a kind of high-voltage switch gear general controller, comprises that MCU10, power circuit 1 sample circuit 2,3,4 and 5 accumulators 6,7,8 and 12, parameter are provided with parts such as toggle switch 9.Described power circuit 1 is a current transformer circuit, obtains the driving use of voltage for MCU and separating brake relay by transformer from current transformer, and needing only any one has electric current mutually, and then MCU and separating brake relay just can be worked; Described sample circuit 2,3,4 and 5 is that phase current and zero-sequence current current transformer are main the composition, and MCU can detect three-phase current and zero-sequence current by sample circuit; Described accumulator 6,7,8 and 12 is a storage capacitor, and needing only any one has electric current mutually, and storage capacitor just can be full of in the extremely short time.Must separating brake the time, the separating brake unit action of MCU control, the energy abrupt release on the electric capacity cause separating brake to tripping coil when electric current is undesired; Described parameter is provided with toggle switch 9 and is controller.Carry out the time of syllogic protection and the setting of phase current and zero-sequence current parameter by it.The parameter that controller is set has: surge delay value, phase current overcurrent delay value, phase current quick-break delay value, phase current quick-break current value, zero-sequence current overcurrent delay value, zero-sequence current quick-break delay value and zero-sequence current quick-break current value; Described MCU, promptly microcontroller 10, and it is by sampling phase current and zero-sequence current, judges whether separating brake of switch.
The operation principle of this controller is: when three-phase any has electric current mutually, when mutually electric current being arranged as A, be two groups of voltages by current/voltage converter 17 with current transformation: one group is the action and the MCU power supply of relay, and another group is to capacitor charging energy storage; If electric current less than the quick-break electric current, carries out the overcurrent time-delay that is provided with by toggle switch 9 greater than setting current,, then make the switch dropout by 11 trip circuits of forming if time-delay back, electric current are still undesired; If electric current is greater than the quick-break electric current, carry out the quick-break time-delay that is provided with by toggle switch 9, if time-delay back, electric current are still undesired, then make the switch dropout by 11 trip circuits of forming; Simultaneously by three phasor1s and the zero-sequence current that forms greater than the zero sequence setting current less than zero sequence quick-break electric current, carry out the zero sequence overcurrent time-delay that is provided with by toggle switch 9, the time-delay back then makes the switch dropout by 11 trip circuits of forming if zero-sequence current is still undesired; If zero-sequence current greater than zero sequence quick-break electric current, then carries out being delayed time by the zero sequence quick-break that toggle switch 9 is provided with,, then switch is threaded off by 11 trip circuits of forming if time-delay back zero-sequence current is still undesired.
Claims (1)
1. a high-voltage switch gear high-speed sampling is crossed stream controller, described high-voltage switch gear high-speed sampling is crossed stream controller and comprised that at least MCU (8), sample circuit (1,2,3,4), accumulator (5,6,7,10), parameter are provided with toggle switch (9), is characterized in that: described sample circuit (1,2,3,4) is phase current and zero-sequence current current transformer composition; Described accumulator (5,6,7,10) is a storage capacitor; It is the parameter setting controller that described parameter is provided with toggle switch (9); Described MCU (8) is a microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200517095U CN201029199Y (en) | 2006-07-17 | 2006-07-17 | Synthetic controller of high voltage switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200517095U CN201029199Y (en) | 2006-07-17 | 2006-07-17 | Synthetic controller of high voltage switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201029199Y true CN201029199Y (en) | 2008-02-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200517095U Expired - Fee Related CN201029199Y (en) | 2006-07-17 | 2006-07-17 | Synthetic controller of high voltage switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201029199Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103401314A (en) * | 2013-08-15 | 2013-11-20 | 南京新联电子股份有限公司 | Off-line setting method for constant values of intelligent switch assembly |
| CN101540498B (en) * | 2009-02-17 | 2013-12-25 | 周迭辉 | Method and device for controlling non-setting inrush current of high-voltage switch |
-
2006
- 2006-07-17 CN CNU2006200517095U patent/CN201029199Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101540498B (en) * | 2009-02-17 | 2013-12-25 | 周迭辉 | Method and device for controlling non-setting inrush current of high-voltage switch |
| CN103401314A (en) * | 2013-08-15 | 2013-11-20 | 南京新联电子股份有限公司 | Off-line setting method for constant values of intelligent switch assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |