CN105702530A - High voltage circuit breaker permanent magnet motor actuator drive controller - Google Patents
High voltage circuit breaker permanent magnet motor actuator drive controller Download PDFInfo
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- CN105702530A CN105702530A CN201410678613.0A CN201410678613A CN105702530A CN 105702530 A CN105702530 A CN 105702530A CN 201410678613 A CN201410678613 A CN 201410678613A CN 105702530 A CN105702530 A CN 105702530A
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Abstract
The invention provides a high voltage circuit breaker permanent magnet motor actuator drive controller which comprises a detection module and a control module, wherein the detection module and the control module are connected mutually. The detection module and the control module are connected with a power supply module. The control module is connected with a transmission module. The control module comprises a single chip computer and a drive control circuit. The transmission module comprises a switch transmission unit and a serial communication unit. The detection module comprises a capacitor voltage detection circuit. The controller has a communication function, can match a circuit breaker to form a regional network, controls the opening and the closing of the circuit breaker through a host computer interface of a monitoring center, and at the same time monitors the running status of the circuit breaker in a network. The high voltage circuit breaker permanent magnet motor actuator drive controller has the advantages of strong drive ability, fast speed, good level capacitance, convenient and flexible use, low cost, high reliability and the like, and is worthy of extensive promotion and use.
Description
Technical field
The present invention relates to power transmission and transforming equipment and drive controller technology field, particularly relate to a kind of high-voltage breaker permanent magnet electric operating mechanism and drive controller。
Background technology
Primary cut-out is most important control and protection equipment in power system。Operating mechanism is to control chopper to carry out the mechanism of separating brake and closing operation。Operating mechanism the more commonly used at present mainly has electromagnetic operating mechanism, spring operating mechanism, pneumatic operating mechanism and hydraulic actuating mechanism etc.。Permanent magnet motor controller is the core of permanent magnet motor operating mechanism, its performance directly affects the eliminating effect of fault and the reliably working of chopper, owing to driving controller to need the high power discharge of moment, internal component can be impacted and disturb, simultaneously drive device and receive the impact of the factors such as thunder and lightning, high-tension line, temperature, humidity in outside。
Application number is the open a kind of linear motor operating mechanism of high-voltage breaker of patent of invention of 200610134094.7, belongs to power transmission and transforming equipment technical field。Its structure includes linear electric motors and servo controller, and the secondary of linear electric motors and the moving contact of primary cut-out are connected by insulated tension pole, and linear electric motors are connected with servo controller by armature winding thereon and position and velocity sensor。Advantages of the present invention: mechanism's quality is little, and movement inertia is little, and kinetic energy is greatly reduced, energy loss reduces so that major part energy has all been used on moving contact of breaker kinetic energy, improves the service efficiency of energy。And have a characteristic that volume is little, lightweight;Simple in construction, highly reliable;High efficiency, low energy consumption;Quickly response and high accuracy;Motor process is controlled。
Application number is the drive circuit that the patent of invention of 201080065843.X discloses a kind of electromagnetic operating mechanism。Close making switch (14), utilize the capacitor (11) after charging that Guan Bi coil (5) is carried out excitation, drive movable core (2), during to close not shown vacuum valve, if disconnecting switch (24) and switch (28), even if then produce voltage in coil (6) because of the electromagnetic induction from coil (5), there will not be electric current flows through, and will not produce power consumption。Additionally, if making switch (18) close until switch (14) disconnects, then flow through the electric current of coil (5) to turn when switching (14) and disconnecting and flow to the series circuit (19) that comprises resistance (17), accordingly, it is capable to suppress the voltage occurred in coil (5)。Close making switch (24), utilize capacitor (21) that disconnection coil (6) is carried out excitation, carry out reverse drive movable core (2), during to disconnect vacuum valve, by making switch (14) and switch (18) disconnect, even if thus produce voltage in coil (5) because of the electromagnetic induction from coil (6), there will not be electric current flows through, and will not produce power consumption。
Above scheme; not to the driving controller of operating mechanism as clearly innovation and protection; for driving this important but link of fragility of controller; need to propose a kind of reasonable plan so that it is have that driving force is strong, speed fast, level capacitive is good, flexible and convenient to use, with low cost and reliability advantages of higher。
Summary of the invention
It is an object of the invention to solve above-mentioned technical problem, a kind of high-voltage breaker permanent magnet electric operating mechanism is provided to drive controller, possesses communication function, chopper compositing area network can be coordinated, controlled the divide-shut brake of chopper by the host computer interface of Surveillance center, monitoring network interrupts the operation conditions of road device simultaneously。
For achieving the above object, the technical solution adopted in the present invention is: a kind of high-voltage breaker permanent magnet electric operating mechanism drives controller, including interconnective detection module and control module, described detection module is all connected with power module with described control module, and described control module connects transport module；Described control module includes single-chip microcomputer and drives control circuit, and described transport module includes switching value transmission unit and serial communication unit, and described detection module includes condenser voltage testing circuit。
Described driving control circuit includes divide-shut brake and controls module, and described divide-shut brake controls module and includes voltage detection module, storage capacitor and device for power switching。
Described device for power switching is insulated gate bipolar transistor。
Described switching value transmission unit includes On-off signal level shifting circuit and outputting circuit for relay。
Described power module includes multi-channel switch power and mu balanced circuit。
Described condenser voltage testing circuit includes linear optical coupling。
Described serial communication unit includes RS485 serial communication interface circuit。
There is advantages below in high-voltage breaker permanent magnet motor operation mechanism: moving component only one of which, simple and reliable；Using a capacitor as operation power supply, operation energy consumption is smaller, and efficiency is high；There is higher capability of fast response and higher precision, meet the characteristic requirements of vacuum circuit breaker；Adopt modern control theory and the numerical control system based on microprocessor, it is possible to accurately control cut-offfing and closing the time of chopper, it is also possible to according to predetermined curvilinear motion, it is possible to easily realize communication, in real time monitoring and fault diagnosis functions。Owing to driver needs the high power discharge of moment, internal component can be impacted and disturb, simultaneously drive device and receive the impact of the factors such as thunder and lightning, high-tension line, temperature, humidity in outside, so relative to miscellaneous part, driver is important but very fragile link。
The working method of permanent magnet motor operating mechanism driver of the present invention is divided into normal operating mode and failure operation mode, wherein, the controller of normal operating mode detects performance and the voltage of energy-storage capacitor in real time, when voltage is lower than preset value, it is capacitor charging by power module, otherwise then stop charging, simultaneously monitoring electrical network parameter and circuit-breaker status, by the display output of corresponding parameter；Failure operation mode be then be analyzed according to the failure condition that real-time monitors, judge to compare with preset data after send corresponding operational order, motor once only accepts separating brake or reclosing command, it can be avoided that multiple signals are simultaneously entered the misoperation causing mechanism, improve mechanism reliability, corresponding failure code is issued host computer simultaneously。
A kind of magneto mechanism drive possessing communication function that the present invention develops can coordinate chopper compositing area network, in the network by the host computer interface of Surveillance center control chopper point, close a floodgate, monitoring network interrupts the operation conditions of road device simultaneously, driver adopts industrial conventional RS485 communication, there is very strong common mode disturbances restraint, and transmission medium physical layer is required simple, adopt the common twisted-pair feeder just can network consisting。
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention。
Fig. 2 is the mu balanced circuit figure of power module of the present invention。
Fig. 3 is the On-off signal level shifting circuit figure of switching value transmission unit of the present invention。
Fig. 4 is the outputting circuit for relay figure of switching value transmission unit of the present invention。
Fig. 5 is serial communication interface circuit figure of the present invention。
Detailed description of the invention
As shown in Figures 1 to 5, a kind of high-voltage breaker permanent magnet electric operating mechanism drives controller, and including interconnective detection module 1 and control module 2, detection module 1 is all connected with power module 3 with controlling module 2, controls module 2 and connects transport module 4；Controlling module 2 include single-chip microcomputer 5 and drive control circuit, transport module includes switching value transmission unit and serial communication unit 10, and detection module includes condenser voltage testing circuit；Driving control circuit to include divide-shut brake and control module 6, divide-shut brake controls module and includes voltage detection module 7, storage capacitor 8 and device for power switching 9；Device for power switching is insulated gate bipolar transistor, i.e. IGBT pipe；Switching value transmission unit includes On-off signal level shifting circuit 11 and outputting circuit for relay 12；Power module includes multi-channel switch power 13 and mu balanced circuit 14；Condenser voltage testing circuit includes linear optical coupling；Serial communication unit includes RS485 serial communication interface circuit。
Controller normal work road voltage, and isolated between each road。Therefore this driver have employed multi-channel switch power and is powered。The external KA7805 mu balanced circuit of power supply stability in order to further enhance cpu circuit, as shown in Figure 2。Wherein U is supply voltage, and Uo is controller supply voltage。RI, R2 are that output voltage regulates resistance。It is continuously adjustable that this mu balanced circuit can realize output voltage in 5 one 12V voltage stabilized ranges。Precision can reach more than 0.04, it is possible to practical requirement, and other power supply directly takes from power module。
Controlling module include single-chip microcomputer and drive control circuit, owing to controlling in the system operating mechanism for primary cut-out, its special working mechanism requires that real-time is stronger, particularly dividing, in making process。Accurate commutation control need to be realized, as the core of whole control system。Microprocessor needs have higher performance, to realize measuring in real time and reaching sensitive control ability external signal。Therefore 8 single-chip microcomputer PICl6F877 of classics of the control chip Cai Pian Microchip company of driver, with several functions module inside it: A/D changes, PWM controls, intervalometer etc., it is the chips that are integrated together of a kind of numerous functions, realize hardware circuit software implementation, reduce cost, improve system reliability。
Driving control circuit mainly to include voltage detection module, storage capacitor and device for power switching, its operation principle is: storage capacitor voltage is monitored by driver in real time。If undertension, being charged: if receiving the separating brake or reclosing command that remote control/closely control or host computer transmit, first determining whether whether the whether correct condenser voltage in position of chopper reaches preset value。It is consistent, drives IGBT to carry out point, closing operation。When arriving point, closing position or already more than point, the combined floodgate predetermined registration operation time then immediately turns off IGBT, stops dividing, closing operation, and circuit breaker position is uploaded to host computer and display module。
Divide-shut brake controls in module, and the transmission of electric energy between full bridge power circuit realiration power supply and motor coil, transient high-current not only to be had higher ability to bear by power circuit, also to realize the electrical isolation with control circuit。Short owing to asking during the bigger conducting of current amplitude when mechanism closes a floodgate, and point, making process has twice commutation。Owing to device can be produced bigger impact by HF switch process and power main loop stray inductance superposition and instantaneous power consumption。Therefore the present invention adopts device for power switching IGBT to control the break-make of three-phase windings electric current。And the switching trace of RCD buffer circuit change device is set。Control various transient overvoltage, reduce devices switch loss, protect device safe operation。In IGBT turn off process。Electric capacity passes through diode charging, absorbs the instantaneous consumption that turn off process produces, after IGBT opens, is discharged by resistance R。Absorption diode must select fast recovery diode。Its rated current should be not less than 1/10th of main circuit rated current of devices, in addition。Line inductance should be reduced as far as possible。And internal inductance should be selected to try one's best the good Absorption Capacitance of little high frequency characteristics。
As it is shown on figure 3, be the On-off signal level shifting circuit figure of switching value transmission unit, On-off signal unit is used for accepting breaker operator order and shows。When, after operation button Guan Bi, the conducting of optocoupler primary side sends optical signal。Optocoupler secondary side light turns on, and operation signal is made a gift to someone controller, when button disconnects, for reverse self induction electromotive force one current path of offer in circuit。Avoid the self induction electromotive force because producing too high and damage optocoupler。As shown in Figure 4, for the outputting circuit for relay figure of switching value transmission unit, switch amount output unit, for indicating the running status of chopper, crosses flow point lock, decompression separating brake, and breaker operation mechanism failure alarm signal etc., in order to carry out electrical isolation with outside and possess certain driving force。Relay is adopted to export as I/O。Note at relay coil end inverse parallel afterflow diode, the overvoltage scaling loss relay produced to prevent relay from turning off。
As it is shown in figure 5, be serial communication interface circuit figure；Driver will the parameter of electrical network, capacitance voltage value, chopper status signal upload on the host computer of Control Room in time, owing to the distance of driver Yu Control Room is bigger, so driver adopts industrial conventional Rs-485 to communicate with asking of Control Room, interface as a kind of serial communication, have transmission range length, speed is higher, level capacitive is good, flexible and convenient to use, with low cost and reliability advantages of higher, suffers from being widely applied in many fields such as intelligent management, On-line Control, geological prospectings。
Condenser voltage testing circuit includes linear optical coupling。Permanent magnet motor operating mechanism utilizes capacitor to carry out energy storage。The capacity of energy-storage capacitor and rated voltage select according to armature winding job requirement。Control chip by A/D change monitoring capacitor voltage, if decompression, then software locking divide, switching signal。Forbid that mechanism divides, closes a floodgate。If overvoltage, start corresponding protection。In order to realize the electrical isolation of forceful electric power and light current, energy-storage capacitor can not have any electrical link with cpu circuit。The linear optical coupling that driver adopts model to be HCNR200 transmits to the isolation realizing analogue signal。Its linearity can reach 0。01%, isolation voltage is more than 3000V。Bandwidth is up to 1MHz, wherein condenser voltage observation circuit；Input end and outfan at HCNR200 are respectively arranged with an operational amplifier。When variations in temperature is relatively larger, the internal resistance in HCNR200 can produce relatively larger change, by adding an operational amplifier u7A at input side, adopts reversely input that internal resistance in HCNR200 is compensated, it is possible to effectively to suppress the temperature impact on it。Linear optical coupling is operated under photovoltage pattern, and the linearity can reach 12 precision, and operating frequency is 40kHz to the maximum。Voltage on energy-storage capacitor passes through electric resistance partial pressure。Obtain the amplitude voltage signal less than 15V。This signal is input linear light-coupled isolation hop after follower drives。Voltage signal in secondary side output first passes through RC circuit and filters high-frequency signal, filters digital noise then through ferrite bean L2, recently enters A/D conversion chip。
Controller of the present invention adopts standard equilibration formula to send, and the data collector that differential type receives drives bus, has very strong common mode disturbances restraint。And transmission medium physical layer is not had strict requirement, only just can network consisting with common twisted-pair feeder。It is likely to suffer the attack of electrostatic impact or thunder and lightning owing to driver is installed on outdoor whole system, therefore can also be extraneous with ESD defencive function interface chip MAX3443E, it can withstand up to the electrostatic impact of 15kV。DE and RE short circuit in its interface circuit with single-chip microcomputer PICl6F877 chip, time idle, RE is effective。
Practiced by concrete, the permanent magnet motor operating mechanism driver of the present invention, constitute a real-time industrial with PIC16F877 single-chip microcomputer for core and control system。Analysis, computing and process in real time will be carried out, it is achieved multiple different protection feature from the voltage of electrical network collection, current data。Carry out real-time display and communicate with host computer。Meet simultaneously and control the reliable separating brake of actuator and closing operation requirement, it is achieved measurement, monitoring, protection also with computer networking, can constitute intelligentized monitor protective system。Improve the control level of chopper。
Claims (7)
1. a high-voltage breaker permanent magnet electric operating mechanism drives controller, it is characterised in that: including interconnective detection module and control module, described detection module is all connected with power module with described control module, and described control module connects transport module；Described control module includes single-chip microcomputer and drives control circuit, and described transport module includes switching value transmission unit and serial communication unit, and described detection module includes condenser voltage testing circuit。
2. high-voltage breaker permanent magnet electric operating mechanism as claimed in claim 1 drives controller, it is characterized in that: described driving control circuit includes divide-shut brake and controls module, described divide-shut brake controls module and includes voltage detection module, storage capacitor and device for power switching。
3. high-voltage breaker permanent magnet electric operating mechanism as claimed in claim 2 drives controller, it is characterised in that: described device for power switching is insulated gate bipolar transistor。
4. high-voltage breaker permanent magnet electric operating mechanism as claimed in claim 1 drives controller, it is characterised in that: described switching value transmission unit includes On-off signal level shifting circuit and outputting circuit for relay。
5. high-voltage breaker permanent magnet electric operating mechanism as claimed in claim 1 drives controller, it is characterised in that: described power module includes multi-channel switch power and mu balanced circuit。
6. high-voltage breaker permanent magnet electric operating mechanism as claimed in claim 1 drives controller, it is characterised in that: described condenser voltage testing circuit includes linear optical coupling。
7. high-voltage breaker permanent magnet electric operating mechanism as claimed in claim 1 drives controller, it is characterised in that: described serial communication unit includes RS485 serial communication interface circuit。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410678613.0A CN105702530A (en) | 2014-11-24 | 2014-11-24 | High voltage circuit breaker permanent magnet motor actuator drive controller |
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| CN201410678613.0A CN105702530A (en) | 2014-11-24 | 2014-11-24 | High voltage circuit breaker permanent magnet motor actuator drive controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449312A (en) * | 2016-09-09 | 2017-02-22 | 华中科技大学 | Expulsive force mechanism drive power suppy |
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| CN101534020A (en) * | 2009-04-10 | 2009-09-16 | 沈阳工业大学 | Device and method for controlling motor operating mechanism of circuit breaker |
| US20120187089A1 (en) * | 2008-10-27 | 2012-07-26 | Xuanshu Chen | High-voltage, super-voltage and heavy current breaker |
| CN203691066U (en) * | 2014-01-21 | 2014-07-02 | 霍立克电气（武汉）有限公司 | Permanent magnetic mechanism controller with phase control function and switch monitoring function |
| CN204332856U (en) * | 2014-11-24 | 2015-05-13 | 国家电网公司 | A kind of high-voltage breaker permanent magnet electric operating mechanism driving governor |
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2014
- 2014-11-24 CN CN201410678613.0A patent/CN105702530A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120187089A1 (en) * | 2008-10-27 | 2012-07-26 | Xuanshu Chen | High-voltage, super-voltage and heavy current breaker |
| CN101534020A (en) * | 2009-04-10 | 2009-09-16 | 沈阳工业大学 | Device and method for controlling motor operating mechanism of circuit breaker |
| CN203691066U (en) * | 2014-01-21 | 2014-07-02 | 霍立克电气（武汉）有限公司 | Permanent magnetic mechanism controller with phase control function and switch monitoring function |
| CN204332856U (en) * | 2014-11-24 | 2015-05-13 | 国家电网公司 | A kind of high-voltage breaker permanent magnet electric operating mechanism driving governor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106449312A (en) * | 2016-09-09 | 2017-02-22 | 华中科技大学 | Expulsive force mechanism drive power suppy |
| CN106449312B (en) * | 2016-09-09 | 2018-07-03 | 华中科技大学 | A kind of repulsive force mechanism driving power |
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Application publication date: 20160622 |