CN203707730U - Outdoor intelligent three-phase inconsistent protective device - Google Patents
Outdoor intelligent three-phase inconsistent protective device Download PDFInfo
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- CN203707730U CN203707730U CN201320835663.6U CN201320835663U CN203707730U CN 203707730 U CN203707730 U CN 203707730U CN 201320835663 U CN201320835663 U CN 201320835663U CN 203707730 U CN203707730 U CN 203707730U
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Abstract
The utility model discloses an outdoor intelligent three-phase inconsistent protective device which is strong in interference immunity, high in reliability and accurate in timing and can be installed on a breaker. The outdoor intelligent three-phase inconsistent protective device comprises a casing, an input circuit, an output circuit and a master control circuit. The master control circuit comprises a microprocessor and a switch circuit. The input circuit is connected to the input end of the microprocessor in a manner of photoelectric coupling. The output end of the microprocessor is connected to the output circuit through the switch circuit. The outdoor intelligent three-phase inconsistent protective device replaces a protection device which is connected to a target position through a relay coil style, so that the interference immunity and reliability of the outdoor intelligent three-phase inconsistent protective device are raised. The delay time is controlled through the microprocessor by utilizing a high-precision device and algorithm, and therefore the accuracy of motion is effectively guaranteed, and the delay precision is controlled to be within 10ms. The time-delay time can be preset through a man-machine conversation interface comprising a display component. The operation is flexible, the setting precision reaches 1ms, and the IEC61850 data interface protocol standard is met.
Description
Technical field
The utility model relates to a kind of three-phase when inconsistent, is connected in the protective device between outdoor breaker and non-whole phase protection tripping operation exit relay, outdoor intelligent protection device when particularly a kind of three-phase is inconsistent.
Background technology
Electric power system is in the time of operation, and due to a variety of causes, circuit breaker three-phase may disconnect one mutually or two-phase, causes open-phase operation.When system is during in non-full-operating state, the negative phase-sequence, the zero sequence aliquot that in system, occur produce certain harm to electric equipment.Even also may make some protection action tripping operations, the circuit of normal operation is opened in wrong diagnosis.Therefore need the existence of three phases un identical protection device, avoid the open-phase operation in this device of electric power.In addition; if system adopts substance (while there is single phase ground fault on the line; circuit breaker the single-pole reclosing of a protection action tripping fault phase) or combine heavy (in the time of circuit generation single phase ground fault; adopt single-pole reclosing mode; in the time there is phase fault, adopt three-phase reclosing) mode; during waiting for coincidence, although system is in non-full-operating state.But the time delay that must have certain hour guarantees the realization of reclosing, thereby avoid some transient faults and cause power failure.
The circuit breaker outdoor three-phase non-uniform protection existing at present adopts the time relay and auxiliary relay composition, generally there is time precision not high, especially standing for a long time under outdoor environment impact, time error adds conference and causes being failure to actuate of this action of equipment, the action that should not move, causes very large puzzlement and loss to user; In addition, original device does not have action record memory function and communication function, is unfavorable for remote dispatching gathering, analyzing and further management related data.
Utility model content
The technical problems to be solved in the utility model is to provide and is a kind ofly arranged on circuit breaker and its strong interference immunity, reliability are high, the outdoor intelligent protection device of accurate timing in the time that three-phase is inconsistent.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:
Outdoor intelligent protection device when three-phase of the present utility model is inconsistent, comprise casing, the input circuit that can join with three-phase breaker, can with trip output circuit that exit relay is connected and control the governor circuit of output between input circuit and output circuit of non-whole phase protection, described governor circuit is made up of microprocessor and switching circuit, described input circuit is access to the input of microprocessor in photoelectric coupling mode, the output of microprocessor and the input of described switching circuit join, output and the output circuit of described switching circuit join, on casing, be also provided with the display module being connected with microprocessor and the network interface that can meet IEC81650 host-host protocol.
Described input circuit comprises photoelectrical coupler and at least one group of isolation bleeder circuit being connected with photoelectrical coupler input, isolation bleeder circuit comprises the current-limiting resistor voltage divider, diode and the magnetic bead that are connected in series, and the output of photoelectrical coupler and the input of microprocessor join.
Described current-limiting resistor voltage divider is by the 12 resistance, the 13 resistance that are serially connected in photoelectrical coupler input photodiode two ends with the 11 resistance is in parallel forms, and described photoelectrical coupler can be that model is the optocoupler of HCPL2731, SFH619A, TLP627 or PS2502L.
Described switching circuit comprises that at least three groups are connected to switching tube branch road and the optocoupler relay drive of output end of microprocessor, in switching tube branch road, the grid of power tube is connected to the output of microprocessor by the 31 resistance, the source ground of power tube, its drain electrode is connected to the negative pole of photodiode in the input of optocoupler relay drive by the 33 resistance, the positive pole of this photodiode connects operating voltage, between the grid of power tube and source electrode, is also provided with biasing resistor.
Described output circuit is made up of auxiliary relay, and the output of the control end of auxiliary relay and optocoupler relay drive is joined, and its output and described non-whole phase protection tripping operation exit relay join.
Described microprocessor adopts the built-in industrial level arm processor that model is Micro2440, the interface of the ethernet control module adaptation that it is DM9000 that described network interface adopts with model.
Compared with prior art; the utility model adopts the protective device being made up of microprocessor and photoelectrical coupler; accessed between closing position and trip position, the equipment before having replaced, by the form access of relay coil, has strengthened anti-interference and the reliability of this device.Delay time, by microprocessor control, adopts high accuracy device and algorithm, has effectively guaranteed accuracy of action, and delay precision is stabilized in 10ms.Delay time can preset by the man-machine dialog interface that comprises display module, and flexible operation arranges precision up to 1ms; Each action record is all stored in microprocessor or unloading in external storage card with data mode, is convenient to occurred fault inquire about, gather and analyze, further the tracing management of raising to relevant device.Network service is set and is conducive to remote dispatching and analysis, this network service meets IEC61850 data-interface consensus standard.When installation, adopt DIN35 guide rails assembling, can be arranged on easily, neatly in indoor outer various regulator cubicle/casings.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model.
Fig. 2 is input circuit fundamental diagram of the present utility model.
Fig. 3 is switching circuit and output circuit fundamental diagram of the present utility model.
Fig. 4 is one of the utility model microprocessor judges flow chart.
Fig. 5 is two of the utility model microprocessor judges flow chart.
Fig. 6 is three of the utility model microprocessor judges flow chart.
Fig. 7 is four of the utility model microprocessor judges flow chart.
Reference numeral:
Input circuit 1, isolation bleeder circuit 11, governor circuit 2, microprocessor 21, switching circuit 22, switching tube branch road 23, output circuit 3, LCD display module 4, USB interface 5, network interface 6, photoelectrical coupler U1, optocoupler relay drive U2, power tube V1, auxiliary relay RL1, diode D1, magnetic bead L1, the 11 resistance R the 11, the 12 resistance R the 12, the 13 resistance R the 13, the 31 resistance R 31, biasing resistor R32, the 33 resistance R 33.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
The utility model is the protective device being made up of microprocessor 21 and photoelectrical coupler U1 between access outdoor three-phase breaker closing position and non-whole phase protection tripping operation exit relay, this protective device is arranged in the casing of being made up of plastic cement or metal material, on casing, be provided with and can meet IEC81650 host-host protocol and can be the network interface 6 (DM9000 is a fully-integrated Fast Ethernet mac controller and general Processing Interface) of DM9000 ethernet control module adaptation with model, USB interface 5 and the LCD display module 4 with man-machine dialog interface, display screen in display module 4 adopts tangible LCD display, keyboard adopts film key.
As shown in Figure 1, outdoor intelligent protection device when three-phase of the present utility model is inconsistent, comprise the input circuit 1 that can join with three-phase breaker, can with trip output circuit 3 that exit relay is connected and control the governor circuit 2 of output between input circuit 1 and output circuit 3 of non-whole phase protection, governor circuit 2 is made up of microprocessor 21 and switching circuit 22, input circuit 1 is access to the input of microprocessor 21 in photoelectric coupling mode, the input of the output of microprocessor 21 and described switching circuit 22 joins, the output of switching circuit 22 and output circuit 3 join, display module 4 on casing, network interface 6 is connected with microprocessor 21 respectively with USB interface 5.
It is the built-in industrial level arm processor that Micro2440 Samsung is produced that described microprocessor 21 adopts model, this microprocessor 21 is bright spots of the present utility model, due to the existence of microprocessor 21, combined input signal flexibly, realize the antijamming capability of this device, anti-shake ability and time delay ability, make the delay precision of this device that resolution is set and reach 1ms, thereby make delay precision be less than 10ms and become possibility, the protective device that delay precision is high more can send protection action accurately, replace the inaccurate shortcoming of original device time delay, also be more conducive to staff and formulate the suitable delay time of adjusting.
As shown in Figure 2, described input circuit 1 comprises photoelectrical coupler U1 and at least one group of isolation bleeder circuit 11 being connected with photoelectrical coupler U1 input, isolation bleeder circuit 11 is preferably two groups of circuit that structure is identical, one group of work, another group is for subsequent use, isolation bleeder circuit 11 comprises the current-limiting resistor voltage divider, diode D1 and the magnetic bead L1 that are connected in series, and current-limiting resistor voltage divider makes the input service electric current of photoelectrical coupler U1 be limited to 2mA left and right, thereby photoelectrical coupler U1 can be worked reliably; Diode D1 and magnetic bead L1 play Anti-Jamming, the anti-power frequency of diode D1 is disturbed, the anti-High-frequency Interference of magnetic bead L1, the input of the output of photoelectrical coupler U1 and microprocessor 21 joins, in the time that the phototriode in photoelectrical coupler U1 output ends, this output is joined and is exported high level by the first resistance and operating voltage end.
Described current-limiting resistor voltage divider by the 12 resistance R the 12, the 13 resistance R 13 that is serially connected in photoelectrical coupler U1 input photodiode D1 two ends with the 11 resistance R 11 is in parallel forms, wherein the 11 resistance R 11 has shunting action, the 12 resistance R the 12 and the 13 resistance R 13 equivalences, preferably the 12 resistance R the 12, the 13 resistance R 13 is respectively 30K ohm, the 11 resistance R 11 is 100K ohm, and isolating diode D1 model is IN4007.
Described input circuit 1, by the form of photoelectric coupling, replaces the form of traditional relay coil coupling, adopts the form of photoelectric coupling operating circuit, both can increase the response speed of signal, also can reduce power consumption.The transmission response speed of photoelectric coupling is in ns level, and the corresponding reaction speed of electromagnetic coupled is in ms level; The input power of coil relay is larger in addition, conventionally at 1W to 5W, the anti-interference requirement of the steady operation of guarantee relay and circuit, and photoelectric coupling circuit both can improve the reliability of anti-interference, circuit, can reduce again input power consumption, conventionally below 0.5W.
It is the optocoupler of HCPL2731, SFH619A, TLP627 or PS2502L etc. that described photoelectrical coupler U1 adopts model.
In the time occurring that three-phase is inconsistent, the input signal of the input of input circuit 1 is direct current 220V or direct current 110V, now, after current-limiting resistor voltage divider dividing potential drop, photodiode D1 conducting in photoelectrical coupler U1 input, cause the output conducting of photoelectrical coupler U1 and this terminal voltage is pulled low to low level (ground connection), to microprocessor 21 output low levels.
As shown in Figure 3, described switching circuit 22 comprises that at least three groups are connected to switching tube branch road 23 and the optocoupler relay drive U2 of microprocessor 21 outputs, are preferably seven groups of switching branches and optocoupler relay drive U2.
In switching tube branch road 23, the grid of power tube V1 is connected to the output of microprocessor 21 by the 31 resistance R 31, the source ground of power tube V1, its drain electrode is connected to the negative pole of photodiode D1 in the input of optocoupler relay drive U2 by the 33 resistance R 33, the positive pole of this photodiode D1 connects operating voltage, between the grid of power tube V1 and source electrode, is also provided with biasing resistor R32.
Power tube V1 adopts the NMOS pipe that model is 2N7002.
Described output circuit 3 is made up of auxiliary relay RL1, and the output of the control end of auxiliary relay RL1 and optocoupler relay drive U2 is joined, and its output and described non-whole phase protection tripping operation exit relay join.
Output adopts auxiliary relay RL1, the output signal that microprocessor 21 sends by optocoupler relay drive U2 realize to middle relay R L1 driving.This photoelectricity coupling relay drive adopts KAQW210, and auxiliary relay RL1 adopts the relay that the ST2 serial model No. of Panasonic is ST2-DC24V.
In the time that microprocessor 21 is exported high level, power tube V1 conducting, optocoupler relay drive U2 input conducting then, its output output low level (ground connection), the adhesive of auxiliary relay RL1 coil, contact action, thereby the external loop of tripping.
Outdoor intelligent protection device while adopting three-phase of the present utility model inconsistent, its input determination methods is as follows:
Microprocessor 21 input states have one of four states; High level Idle state, trailing edge state, Low level effective, rising edge state.
High level Idle state: continue in high level state, the time is greater than 33ms;
Trailing edge state: while transferring low level to by high level, need to just can be really in low level through the time delay process of a 33ms;
Rising edge state: while transferring high level to by low level, also needing just can be in high level through the time delay process of a 33ms;
Low level effective: continue in low level state, the time is greater than 33ms.
1. when circuit does not occur that three-phase is inconsistent, when input circuit 1 is exported (input that is microprocessor 21) for high level Idle state: if while now there is the inconsistent situation of three-phase, the input of microprocessor 21 receives low level signal, make microprocessor 21 inputs transfer lower jumping to along state, otherwise, making microprocessor 21 inputs is still high level Idle state, (duration of input low level is will judge whether in trailing edge state and a condition that meets deferred action to the zero clearing of input low level timer, zero clearing is to want initialization zero setting herein, guarantee to transfer trailing edge state to from high level Idle state is to start timing from null value at every turn), simultaneously, make microprocessor 21 not export the signal of the auxiliary relay RL1 action in control output circuit 3.
2. when microprocessor 21 inputs are lower jumping during along state,
1) be lasting low level signal if the input of microprocessor 21 receives, make microprocessor 21 input low level timers start timing to this duration and output time delay (output delay timer be time delay below output timing judgement with), otherwise make microprocessor 21 inputs transfer jumping edge to;
2) when microprocessor 21 input low level timers start timing to described duration and output time delay, if the input low level duration is greater than 33ms, make microprocessor 21 inputs transfer Low level effective to, otherwise microprocessor 21 inputs are still lower jumping edge.
3. in the time that being output as Low level effective, input circuit 1 (gets rid of external interference, when circuit may occur that three-phase that transient fault, permanent fault or other circuit breaker failures etc. cause is inconsistent):
1) what the input of microprocessor 21 still received is lasting low level signal; make microprocessor 21 input low level timers continue timing to this duration and output time delay; jump along (this step is got rid of transient fault otherwise make microprocessor 21 inputs transfer to; but system may occur that the three-phase that permanent fault or other circuit breaker failures etc. cause is inconsistent; and device sends trip command; protection system, fixes a breakdown).
2) when microprocessor 21 input low level timers continue timing to described duration and output time delay, if input low level duration and output time delay are more than or equal to each road output delay time (under normal circumstances, the delay time on Zhe Qi road should be identical), make microprocessor 21 output control the signal of described auxiliary relay RL1 action and record output time and the output time of this output signal; Otherwise, returning back to microprocessor 21 input low level timers this duration and output time delay are started to time status, microprocessor 21 is not exported the signal that makes corresponding auxiliary relay RL1 action.
3) judge whether equal " input pulse time+20ms " by each road auxiliary relay RL1 output duration (described input pulse refers to the input pulse width of the photoelectrical coupler U1 in input circuit 1, be the duration that occurs three-phase inconsistent state), be, close the output of corresponding auxiliary relay RL1 and preserve output time, output duration, export time delay zero clearing simultaneously, wait for action next time, otherwise, continue the timing of this auxiliary relay RL1 output time.
When microprocessor 21 inputs transfer to upper jumping along time:
1), when microprocessor 21 inputs receive low level signal, change input state into lower jumping edge, otherwise, start the timing of input high level duration;
2) after starting the timing of input high level duration, whether be greater than 33ms depending on the input high level duration, be, change input state into high level Idle state, otherwise input high level is invalid, maintaining input state is upper jumping edge.
The utility model can or touch described LCD by button delay time is set.
It can also carry out data copy by USB interface 5, can also pass through Internet Transmission related data.
Claims (6)
1. an outdoor intelligent protection device when three-phase is inconsistent, comprise casing, the input circuit (1) that can join with three-phase breaker, can with trip output circuit (3) that exit relay is connected and control the governor circuit (2) of output between input circuit (1) and output circuit (3) of non-whole phase protection, it is characterized in that: described governor circuit (2) is made up of microprocessor (21) and switching circuit (22), described input circuit (1) is access to the input of microprocessor (21) in photoelectric coupling mode, the input of the output of microprocessor (21) and described switching circuit (22) joins, the output of described switching circuit (22) and output circuit (3) join, on casing, be also provided with the display module (4) being connected with microprocessor (21) and the network interface (6) that can meet IEC81650 host-host protocol.
2. outdoor intelligent protection device when three-phase according to claim 1 is inconsistent; it is characterized in that: described input circuit (1) comprises photoelectrical coupler (U1) and at least one group of isolation bleeder circuit (11) being connected with photoelectrical coupler (U1) input; isolation bleeder circuit (11) comprises the current-limiting resistor voltage divider, diode (D1) and the magnetic bead (L1) that are connected in series, and the input of the output of photoelectrical coupler (U1) and microprocessor (21) joins.
3. outdoor intelligent protection device when three-phase according to claim 2 is inconsistent; it is characterized in that: described current-limiting resistor voltage divider is by the 12 resistance (R12), the 13 resistance (R13) and the 11 resistance (R11) formation in parallel that are serially connected in photoelectrical coupler (U1) input photodiode (D1) two ends, and described photoelectrical coupler (U1) can be that model is the optocoupler of HCPL2731, SFH619A, TLP627 or PS2502L.
4. outdoor intelligent protection device when three-phase according to claim 1 is inconsistent, it is characterized in that: described switching circuit (22) comprises that at least three groups are connected to switching tube branch road (23) and the optocoupler relay drive (U2) of microprocessor (21) output, in switching tube branch road (23), the grid of power tube (V1) is connected to the output of microprocessor (21) by the 31 resistance (R31), the source ground of power tube (V1), its drain electrode is connected to the negative pole of photodiode (D1) in the input of optocoupler relay drive (U2) by the 33 resistance (R33), the positive pole of this photodiode (D1) connects operating voltage, between the grid of power tube (V1) and source electrode, be also provided with biasing resistor (R32).
5. outdoor intelligent protection device when three-phase according to claim 1 is inconsistent; it is characterized in that: described output circuit (3) is made up of auxiliary relay (RL1); the output of the control end of auxiliary relay (RL1) and optocoupler relay drive (U2) is joined, and its output and described non-whole phase protection tripping operation exit relay join.
6. outdoor intelligent protection device when three-phase according to claim 1 is inconsistent; it is characterized in that: described microprocessor (21) adopts the built-in industrial level arm processor that model is Micro2440 the interface of the ethernet control module adaptation that it is DM9000 that described network interface (6) adopts with model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320835663.6U CN203707730U (en) | 2013-12-17 | 2013-12-17 | Outdoor intelligent three-phase inconsistent protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320835663.6U CN203707730U (en) | 2013-12-17 | 2013-12-17 | Outdoor intelligent three-phase inconsistent protective device |
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| Publication Number | Publication Date |
|---|---|
| CN203707730U true CN203707730U (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320835663.6U Withdrawn - After Issue CN203707730U (en) | 2013-12-17 | 2013-12-17 | Outdoor intelligent three-phase inconsistent protective device |
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| Country | Link |
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| CN (1) | CN203707730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683175A (en) * | 2013-12-17 | 2014-03-26 | 深圳市中江源科技有限公司 | Outdoor intelligent protection device at time of three-phase inconsistence and input method thereof |
| CN104091503A (en) * | 2014-07-24 | 2014-10-08 | 国家电网公司 | 220kV switch open-phase protection teaching and training device |
-
2013
- 2013-12-17 CN CN201320835663.6U patent/CN203707730U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103683175A (en) * | 2013-12-17 | 2014-03-26 | 深圳市中江源科技有限公司 | Outdoor intelligent protection device at time of three-phase inconsistence and input method thereof |
| CN103683175B (en) * | 2013-12-17 | 2016-08-17 | 深圳市中江源科技有限公司 | Outdoor intelligent protection device during unbalanced three-phase lines and the method for input thereof |
| CN104091503A (en) * | 2014-07-24 | 2014-10-08 | 国家电网公司 | 220kV switch open-phase protection teaching and training device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140709 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |