CN201191774Y - 24kV vacuum circuit breaker - Google Patents
24kV vacuum circuit breaker Download PDFInfo
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- CN201191774Y CN201191774Y CNU2008200344292U CN200820034429U CN201191774Y CN 201191774 Y CN201191774 Y CN 201191774Y CN U2008200344292 U CNU2008200344292 U CN U2008200344292U CN 200820034429 U CN200820034429 U CN 200820034429U CN 201191774 Y CN201191774 Y CN 201191774Y
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Abstract
The utility model relates to a 24Kv vacuum circuit breaker, which comprises a power supply unit, a wireless transmitting unit, a wireless receiving unit and an execution unit, wherein the power supply unit is connected with the wireless receiving unit and the execution unit, and supplies electricity to the wireless receiving unit and the execution unit, the wireless transmitting unit is communicated with the wireless receiving unit through a wireless signal, and the output of the wireless receiving unit is connected with the input of the execution unit. The wireless transmitting unit comprises an encoder, a battery, a push button, a crystal oscillator and a transmitting antenna, wherein the push button is connected with an input end of the encoder, the transmitting antenna is connected with the output of the encoder, the encoder is connected with the crystal oscillator, the battery is connected with the components and supplies electricity to the components, adjustable resistances are connected with two ends of the crystal oscillator in parallel, the wireless receiving unit comprises a decoder, the crystal oscillator, a dial switch and an receiving antenna, wherein the dial switch is connected with an encode address arranging interface of the decoder, an output end of the receiving antenna is connected with the input end of the decoder, the output of the decoder is connected with the input of the execution unit, and the decoder is connected with the crystal oscillator. The device has stronger anti-interference ability.
Description
Technical field
The present invention belongs to power equipment, is in particular the 24kV vacuum circuit-breaker.
Background technology
Along with the power load of China big and medium-sized cities sharply increases, and the problem that the rural power grids circuit is long, equipment is old, line loss is high becomes increasingly conspicuous, original 10kV power supply has been difficult to satisfy power reguirements, expose weakness such as its power supply distance is excessive, line loss rate is high, quality of voltage is difficult to meet the requirements gradually, and the power supply of employing 20kV electric pressure have a series of advantages such as the power supply capacity of increasing, assurance quality of voltage, the electric energy loss of reduction electrical network, saving power grid construction expense.China is just throwing huge fund at present the 20kV electrical network is being built, and the 24kV vacuum circuit-breaker is one of visual plant of building by the 20kV power distribution network.24kV circuit breaker great majority use out of doors, are installed on the shaft tower of 20kV power distribution network, when the needs personnel operate it, need by insulated tension pole outdoor pole vacuum circuit breaker to be carried out divide-shut brake, and this operation both inconvenience is also dangerous.Therefore, the 24kV circuit breaker that urgent need has the wireless remote controlled function, but the use of present wireless switching power supply is transformer frequency response, after circuit parameter is determined, output voltage is constant, but output current changes with load increase and decrease, and the reliability of wireless switching work is influenced to some extent.The high voltage heavy current of 24kV transmission line also proposes harsh requirement to wireless switchgear, and it is stricter that EMC electromagnetic compatibility degree is required, and wireless switching in the past can not be competent at the high pressure field, and misoperation takes place easily, brings challenges to reliability.
Therefore, need a kind of anti-electromagnetic interference capability of research and development strong, under the extremely harsh situation of operational environment, can realize the device of remote wireless control 24kV circuit-breaker switching on-off action message.
Summary of the invention
At the problem that existing wireless remote control exists, the present invention proposes a kind of 24kV vacuum circuit-breaker
A kind of 24kV vacuum circuit-breaker comprises power subsystem, wireless transmitting unit, radio receiving unit, performance element; Power subsystem connects radio receiving unit and performance element, is they power supplies; Wireless transmitting unit and radio receiving unit pass through communicating wireless signals; The output of radio receiving unit connects the input of performance element.Described wireless transmitting unit comprises encoder, battery, button, crystal oscillator, transmitting antenna, and button connects the input of encoder, and transmitting antenna connects the output of encoder, and encoder connects crystal oscillator, and battery connects above-mentioned parts, is they power supplies; The two ends of described crystal oscillator adjustable resistance in parallel; Described radio receiving unit comprises decoder, crystal oscillator, toggle switch, reception antenna, and the coded address that toggle switch connects decoder is provided with interface; The output of reception antenna connects the input of decoder, and the output of decoder connects the input of performance element, and decoder connects crystal oscillator; The two ends of described crystal oscillator adjustable resistance in parallel.By at the two ends of crystal oscillator adjustable resistance in parallel, guarantee that the radio receiving unit crystal oscillator frequency is the twice of wireless transmitting unit crystal oscillator frequency.
Described encoder is made of PT2262 chip and peripheral circuit thereof; Decoder is made of PT2272 chip and peripheral circuit thereof.
Described performance element comprises high-speed isolated optocoupler, relay, big electric capacity, the capacity of this electric capacity is 20000uF, electric capacity is 220V+ and the 220V-among Fig. 2, be that big electric capacity serves as DC power supply, the motor power supply of giving the permanent-magnet operating mechanism coil power supply of 24kV vacuum circuit-breaker or giving 24kV vacuum circuit-breaker electric spring mechanism realizes wireless remote control open/close.The input of high-speed isolated optocoupler connects the output of decoder, and the output of high-speed isolated optocoupler connects the control end of relay, and the output of relay connects the break-make of circuit between the big electric capacity of control the two poles of the earth.
When PT2272 confirms that the wireless encoding that receives is correct, drive the high speed photo coupling conducting at data port output high potential, it is electric that direct current 12V relay coil is got, and the relay normally open contact adhesive makes big electric capacity separating brake or the conducting of combined floodgate control loop, thereby realizes divide-shut brake.The use of high speed photo coupling guarantees that relay avoids interference maloperation and do.
Transmitting and receiving of described wireless transmission, receiving element adopts data and geocoding mode to transmit and receive, the code set number can reach 531441 groups at most, (address bit can have three kinds of states, be respectively low level, high level, high resistant, by toggle switch address bit A0 to A11 is provided with, can be arranged to 531441 kinds of wireless encoding states), guarantee that wireless encoding does not clash, effectively prevent the 24kV circuit breaker because wireless signal disturbs the misoperation that causes.
Described power supply adopts the closed module power supply, input AC 220V output direct current 220V and direct current 12V.Power module direct current 12V powers to relay, and direct current 12V is also as the power supply of giving PT2272 and PT2262, and the 220V direct current is given big electric capacity charging.
Power subsystem adopts the closed module power supply, is the 220V direct current by the alternating current 220V rectification, and is transformed to direct current 12V through the PWM pulse-width modulation.And using capacitor step-down formula power supply, output current is constant, saves transformer, has reduced the volume of remote controller, and saves cost, has improved unit efficiency.Power module direct current 12V powers to relay, and direct current 12V is also as the power supply of giving PT2272 and PT2262, and the 220V direct current is given big electric capacity charging.
Wireless transmitting unit as shown in Figure 2, is made up of triode, 38KHZ crystal oscillator, LED lamp, 4.5V button cell, diode IN4007, resistance, electric capacity, button, PT2262-M2 chip.PT2262 is a kind of Long-distance Control encoder, carries out supportingly with PT2272, adopts the CMOS technology.It becomes data the waveform of a series of suitable radio frequencies and infrared mode with geocoding.PT2262 has 12 triple gate address pins at most, and 531441 kinds of code address can be provided; Therefore, reduced code conflict and scan the possibility of code without permission up hill and dale.Wireless generating unit requires the concussion frequency of a precision, therefore adjustable resistance in parallel between the bipod OSC1 of crystal oscillator and OSC2, the crystal oscillator frequency of PT2272 radio receiving unit must be 2.5 ~ 8 times of PT2262, just can guarantee the correct data that receive unlimited transmitter unit emission.Therefore, correctly receive in order to ensure wireless encoding, PT2262 selects 1.2M Ω resistance for use, and PT2272 selects 200K Ω resistance for use.
Radio receiving unit as shown in Figure 3, is made up of 76KHZ crystal oscillator, the toggle switch that geocoding is set, LED lamp, PT2272-M2 chip.The PT2272-M2 chip is confirmed the wireless encoding signal that receives, differentiation is to store behind the useful wireless encoding signal, and compare with the wireless encoding of last stored, then receive next group wireless encoding signal as unanimity, and whether affirmation is consistent with set coded address, then data port D0 or D1 put high potential as unanimity.Also whether differentiation is consistent with set coded address to continue to receive wireless encoding, then keeps dateout mouth state as unanimity, as inconsistent, then discharges the state of memory encoding data and data port D0 and D1.
Performance element is made up of high-speed isolated optocoupler, 12V power supply, direct current 12V relay, big electric capacity.When PT2272 confirms that the wireless encoding that receives is correct, drive the high speed photo coupling conducting at data port output high potential, it is electric that direct current 12V relay coil is got, and the relay normally open contact adhesive makes big electric capacity separating brake or the conducting of combined floodgate control loop, thereby realizes divide-shut brake.The use of high speed photo coupling guarantees that relay avoids interference maloperation and do.
The utility model proposes strong, the reliable remote control of wireless receiving of design antijamming capability, can realize the operation of 24kV circuit-breaker switching on-off has been improved the safe and reliable operation of operating personnel to circuit breaker greatly.Adopt SMD making, make device have advantages such as easy for installation, that thermal diffusivity good, antijamming capability is strong.
Description of drawings:
Fig. 1 system schematic of the present invention
Fig. 2 wireless transmitting unit schematic diagram
Fig. 3 radio receiving unit schematic diagram
Fig. 4 crystal oscillator frequency figure that encodes
Fig. 5 crystal oscillator frequency figure that decodes
Embodiment
The invention will be further described below with reference to the drawings and specific embodiments.
As figure, the structure of apparatus of the present invention comprises wireless transmitting unit, radio receiving unit, power subsystem, receiving element.Power module, coded transmitter, coding receiver, big electric capacity, direct current 12V relay, 24kV circuit breaker.
1. the realization of power subsystem in apparatus of the present invention.
2. the realization of wireless transmitting unit in apparatus of the present invention.
, can be provided with by the coding waveforms of toggle switch to transmitter unit the PT2262 chip power supply by the 4.5V battery, nearly 531441 kinds of set-up modes can prevent effectively that wireless encoding from clashing the generation of incident, guarantee the reliability of receiver module execution action.Idiographic flow as shown in Figure 4, after powering on, PT2262 enters ready mode, button triggers emission and enables pin, if the transmit pin level is high, then carries out the transmission of wireless data and geocoding, data after encoded are outwards taken place by the transmitting antenna that emission pin DOUT is connected with the address, whether detecting emission after the emission once more, to enable pin be high level, as be high level, then continues to launch wireless encoding, as be low level, then discharge and send out the memory block coded data, return ready mode, wait for emission next time.
3. the realization of radio receiving unit in apparatus of the present invention.
Form by 76KHZ crystal oscillator, the toggle switch that geocoding is set, LED lamp, PT2272-M2 chip.Idiographic flow carries out initialization to the coded address as shown in Figure 5, by toggle switch A0 ~ A9 pin of PT2272 is carried out the initialization setting.After powering on, PT2272 enters ready mode, wait for wireless transmitting unit emission wireless encoding, wireless encoding is arranged in range of receiving, the PT2272-M2 chip is confirmed the wireless encoding signal that receives, differentiation is to store behind the useful wireless encoding signal, and compare with the wireless encoding of last stored, then receive next group wireless encoding signal as unanimity, and whether consistently confirm with set coded address, then data port D0 or D1 are put high potential as unanimity, concrete sequential as shown in Figure 6.Also whether differentiation is consistent with set coded address to continue to receive wireless encoding, then keeps dateout mouth state as unanimity, as inconsistent, then discharges the state of memory encoding data and data port D0 and D1.The crystal oscillator frequency of radio receiving unit requires very strict, need be on 2 times of wireless transmitting unit crystal oscillator frequency.Adjustable resistance by crystal oscillator pin two ends carries out the frequency adjustment, and coding crystal oscillator frequency and adjustable resistance relation are seen Fig. 4, and decoding crystal oscillator frequency and adjustable resistance relation are seen Fig. 5.
4. the realization of performance element in apparatus of the present invention.
High-speed isolated optocoupler, 12V power supply, direct current 12V relay, big electric capacity are formed.When PT2272 confirms that the wireless encoding that receives is correct, data port output high potential at PT2272 drives the high speed photo coupling conducting, direct current 12V relay coil is got, the relay normally open contact adhesive, make big electric capacity separating brake or the conducting of combined floodgate control loop, utilize big electric capacity (direct current 220V+ and 220V-among Fig. 2, promptly big electric capacity serves as DC power supply) discharge, the motor power supply of giving permanent-magnet operating mechanism divide-shut brake coil power supply or giving electric spring mechanism, thereby the divide-shut brake of realization 24kV circuit breaker.The use of high speed photo coupling guarantees that relay avoids interference maloperation and do.
Claims (5)
1, a kind of 24kV vacuum circuit-breaker comprises power subsystem, wireless transmitting unit, radio receiving unit, performance element; Power subsystem connects radio receiving unit and performance element, is they power supplies; Wireless transmitting unit and radio receiving unit pass through communicating wireless signals; The output of radio receiving unit connects the input of performance element, it is characterized in that:
Described wireless transmitting unit comprises encoder, battery, button, crystal oscillator, transmitting antenna, and button connects the input of encoder, and transmitting antenna connects the output of encoder, and encoder connects crystal oscillator, and battery connects above-mentioned parts, is they power supplies; The two ends of described crystal oscillator adjustable resistance in parallel;
Described radio receiving unit comprises decoder, crystal oscillator, toggle switch, reception antenna, and the coded address that toggle switch connects decoder is provided with interface; The output of reception antenna connects the input of decoder, and the output of decoder connects the input of performance element, and decoder connects crystal oscillator; The two ends of described crystal oscillator adjustable resistance in parallel.
2,24kV vacuum circuit-breaker according to claim 1 is characterized in that described encoder is made of PT2262 chip and peripheral circuit thereof; Decoder is made of PT2272 chip and peripheral circuit thereof.
3,24kV vacuum circuit-breaker according to claim 1 is characterized in that the radio receiving unit crystal oscillator frequency is the twice of wireless transmitting unit crystal oscillator frequency.
4,24kV vacuum circuit-breaker according to claim 1, it is characterized in that described performance element comprises high-speed isolated optocoupler, relay, big electric capacity, the input of high-speed isolated optocoupler connects the output of decoder, the output of high-speed isolated optocoupler connects the control end of relay, and the output of relay connects the break-make of circuit between the big electric capacity of control the two poles of the earth; The capacity of described big electric capacity is 20000uF.
5,24kV vacuum circuit-breaker according to claim 1 is characterized in that described power supply adopts the closed module power supply, input AC 220V output direct current 220V and direct current 12V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200344292U CN201191774Y (en) | 2008-04-24 | 2008-04-24 | 24kV vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200344292U CN201191774Y (en) | 2008-04-24 | 2008-04-24 | 24kV vacuum circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN201191774Y true CN201191774Y (en) | 2009-02-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200344292U Expired - Fee Related CN201191774Y (en) | 2008-04-24 | 2008-04-24 | 24kV vacuum circuit breaker |
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| CN (1) | CN201191774Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538259A (en) * | 2014-12-01 | 2015-04-22 | 国家电网公司 | Circuit breaker in-situ operation handle emergency remote control device |
| CN113361289A (en) * | 2021-04-28 | 2021-09-07 | 株洲中车时代电气股份有限公司 | Dial switch code identification processing method and device and code reading circuit |
-
2008
- 2008-04-24 CN CNU2008200344292U patent/CN201191774Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538259A (en) * | 2014-12-01 | 2015-04-22 | 国家电网公司 | Circuit breaker in-situ operation handle emergency remote control device |
| CN113361289A (en) * | 2021-04-28 | 2021-09-07 | 株洲中车时代电气股份有限公司 | Dial switch code identification processing method and device and code reading circuit |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20110424 |