CN205092799U - Be suitable for high -voltage inverter's two -node cluster hot backup auto -change over device and two -node cluster hot backup system - Google Patents
Be suitable for high -voltage inverter's two -node cluster hot backup auto -change over device and two -node cluster hot backup system Download PDFInfo
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- CN205092799U CN205092799U CN201520845670.3U CN201520845670U CN205092799U CN 205092799 U CN205092799 U CN 205092799U CN 201520845670 U CN201520845670 U CN 201520845670U CN 205092799 U CN205092799 U CN 205092799U
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- frequency converter
- node cluster
- converter
- load motor
- hot backup
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Abstract
The utility model relates to a be suitable for high -voltage inverter's two -node cluster hot backup auto -change over device and two -node cluster hot backup system to solve the problem of the job stabilization nature of load that how to improve. The device includes: bypass auto -change over device is suitable for connected load motor and two converters, controlling means is connected to bypass auto -change over device, this controlling means is suitable for the basis the status signal of converter, through the switching of bypass auto -change over device does the converter of load motor frequency modulation. Because the utility model discloses can switch to another converter when a converter breaks down, consequently switch for traditional worker's frequency conversion, reduced the disturbance to load motor, improved the load motor reliability of operation. Even because a converter breaks down, still can guarantee load motor's normal work, avoided causing during the converter trouble electric energy extravagant, practiced thrift the electric energy, and the power of load is big more, energy -conserving space is big more.
Description
Technical field
The utility model relates to equipment handoff technique field, especially relates to a kind ofly being suitable for the two-node cluster hot backup switching device shifter of high voltage converter and a kind of Dual-Computer Hot-Standby System.
Background technology
High voltage converter, as speed regulating device that are asynchronous for three-phase high-voltage or synchronous motor, is widely used in the industries such as electric power, metallurgy, petrochemical industry, mine, plays key player aborning.Therefore, the reliability of high voltage converter is had to the super high power high voltage converter of higher requirement, particularly more than 10000KVA, such as, load is the high voltage converter of blast furnace blower.
Once high voltage converter breaks down, even if can power frequency operation be switched to, also can produces larger fluctuation to load, make the job stability of load poor, therefore can cause ill effect.And because bearing power is comparatively large, the energy saving space is comparatively large, and therefore the fault of high voltage converter can cause huge waste of energy.
Utility model content
Technical problem to be solved in the utility model how to improve the job stability of load.
For solving the problems of the technologies described above, the utility model proposes a kind of the two-node cluster hot backup switching device shifter and the Dual-Computer Hot-Standby System that are suitable for high voltage converter.
First aspect, this two-node cluster hot backup switching device shifter comprises:
Bypass changeover device, is suitable for connecting load motor and two frequency converters;
Control device, be connected to described bypass changeover device, this control device is suitable for the status signal according to described frequency converter, is switched to the frequency converter of described load motor frequency modulation by described bypass changeover device.
Optionally, described control device is provided with the signal port being suitable for being connected with the status signal transmission port of two described frequency converters respectively by hardwire.
Optionally, be provided with communication module in described control device, this communication module is suitable for communicating to connect with the communication module in frequency converter described in two, makes the running parameter in a described frequency converter transfer to frequency converter described in another.
Optionally, described bypass changeover device comprises diverter switch, and described diverter switch is suitable for being arranged between two described frequency converters and described load motor;
Wherein, described diverter switch is circuit breaker or isolating switch.
Optionally, described bypass changeover device is provided with the cable connection end mouth being suitable for connecting one to one with the high input voltage cable connection end mouth of frequency converter described in each and High voltage output cable connection end mouth.
Second aspect, this Dual-Computer Hot-Standby System comprises: described two-node cluster hot backup switching device shifter, load motor and two frequency converters, and described load motor and two described frequency converters are all connected to described two-node cluster hot backup switching device shifter, wherein:
The status signal transmission port of frequency converter described in each is connected with the signal port of control device in described two-node cluster hot backup switching device shifter;
In the high input voltage cable connection end mouth of frequency converter described in each and High voltage output cable connection end mouth and described two-node cluster hot backup switching device shifter, the cable connection end mouth of bypass changeover device connects one to one.
Because the utility model when a frequency converter breaks down, can be switched to another frequency converter, therefore switch relative to traditional work frequency conversion, reduce the disturbance to load motor, improve load motor reliability of operation.Even if because a frequency converter breaks down, still can the normal work of proof load motor, avoid and cause waste of energy during frequency converter failure, saved electric energy, and the power of load is larger, energy-conservation space is larger.
Accompanying drawing explanation
Can understanding characteristic information of the present utility model clearly and advantage by reference to accompanying drawing, accompanying drawing is schematic and should not be construed as and carry out any restriction to the utility model, in the accompanying drawings:
Fig. 1 shows the structured flowchart of the utility model Dual-Computer Hot-Standby System one embodiment.
Embodiment
In order to more clearly understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection range of the present utility model is not by the restriction of following public specific embodiment.
The frequency converter of the high voltage converter mentioned in the utility model to be operating voltage be 1KV-13.6KV, super high power high voltage converter refers to the high voltage converter of power at more than 10000KVA.
The utility model provides a kind of two-node cluster hot backup switching device shifter being suitable for high voltage converter, and as shown in Figure 1, this device comprises:
Bypass changeover device, is suitable for connecting load motor and two frequency converters;
Control device, be connected to described bypass changeover device, this control device is suitable for the status signal according to described frequency converter, is switched to the frequency converter of described load motor frequency modulation by described bypass changeover device.
Arrow in Fig. 1 represents the transmission direction of corresponding signal.
So-called status signal, such as working state signal, fault status signal, hot standby status signal, working state signal wherein refers to that the frequency converter sending this signal is in running order, fault status signal refers to that the frequency converter sending this signal is in malfunction, hot standby status signal refers to that the frequency converter sending this signal is in hot standby state, this frequency converter possesses the condition of putting into operation, and can put into operation at any time.
Here in order to distinguish two frequency converters, a table scale is wherein the first frequency converter, and another table scale is the second frequency converter.When the first frequency converter breaks down, fault status signal can be sent to control device, after control device receives this signal, control diverter switch in bypass changeover device, making the major loop wiring of connection load motor switch to the second frequency converter being in hot standby state, is load motor frequency modulation by the second frequency converter.Now, the first frequency converter switches to malfunction by operating state, and the second frequency converter switches to operating state by hot standby state.
During this use is novel, control device, according to the status signal received, generates control signal, control signal is sent to bypass changeover device, control the action of the diverter switch in bypass changeover device, action also can be completed result feedback to control device by certain bypass changeover device.
Because the utility model when a frequency converter breaks down, can be switched to another frequency converter, therefore switch relative to traditional work frequency conversion, reduce the disturbance to load motor, improve load motor reliability of operation.Even if because a frequency converter breaks down, still can the normal work of proof load motor, avoid and cause waste of energy during frequency converter failure, saved electric energy, and the power of load is larger, energy-conservation space is larger.
Control device can receive the status signal of frequency converter, certainly can also send status signal to arrange the state of frequency converter to frequency converter.Such as, first frequency converter by the first frequency converter of breaking down and high_voltage isolation, is connected with high pressure by bypass changeover device after precharge when the first frequency converter reparation by bypass changeover device, after ready, the first frequency converter is switched to hot standby state by control device.
Certainly, control device also can control the operations such as the precharge of frequency converter, such as, before startup frequency converter, controls frequency converter and carries out precharge, restart frequency converter after precharge.
Optionally, described control device be provided be suitable for by hardwire respectively with the signal port of the connection of two described frequency converters.
Frequency converter is provided with status signal transmission port, this port is used for sending or accepting state signal.Control device also must be provided with the signal port receiving or send status signal, the status signal transmission port on frequency converter is connected by hardwire with the signal port on control device.Wherein, hardwire is only such as, for transmission state signal, working state signal, hot standby status signal etc.
Optionally, described bypass changeover device is provided with the cable connection end mouth being suitable for connecting one to one with the high input voltage cable connection end mouth of frequency converter described in each and High voltage output cable connection end mouth.
Bypass changeover device in the present invention can be connected with two frequency converters, load motors, and bypass changeover device which platform controlled in two frequency converters is load motor frequency modulation.The cable connection end mouth that the high input voltage cable connection end mouth of frequency converter is corresponding with on bypass changeover device is connected by high-tension cable, the cable connection end mouth that High voltage output cable connection end mouth is corresponding with on bypass changeover device is connected by high-tension cable, utilizes the input of high-tension cable transmission transformer, output voltage.
Optionally, be provided with communication module in described control device, this communication module is suitable for communicating to connect with the communication module in frequency converter described in two, makes the running parameter in a described frequency converter transfer to frequency converter described in another.
Be provided with communication module in control device, such as 485 communication modules, are also provided with communication module in frequency converter.When the first frequency converter failure, the running parameter that it is current is sent to control device, and this running parameter is sent to the second frequency converter by communication module in control device again, and the second frequency converter is according to this running parameter execution work.Although frequency converter changes, because running parameter does not change, therefore the disturbance of load motor is reduced to minimum.
For the ease of realizing parameter sharing, the shared parameter region of default size can be opened up in the programmable logic controller (PLC) in frequency converter, for the running parameter of Storage sharing.Such as, running parameter when the first frequency converter normally works is updated to shared running parameter, when the first frequency converter failure, when switching to the second frequency converter being in hot standby state, the running parameter shared stored by first frequency converter is sent in the second frequency converter by control device, the running parameter execution work that the second frequency converter is shared according to this.
Optionally, can comprise diverter switch in described bypass changeover device, described diverter switch is suitable for being arranged between two described frequency converters and described load motor;
Wherein, described diverter switch is circuit breaker or isolating switch.
Cut-offfing by diverter switch, controls frequency converter and being communicated with or disconnection between load motor.
The utility model additionally provides a kind of Dual-Computer Hot-Standby System, this system comprises above arbitrary described two-node cluster hot backup switching device shifter, load motor and two frequency converters, described load motor and two described frequency converters are all connected to described two-node cluster hot backup switching device shifter, wherein:
The status signal transmission port of frequency converter described in each is connected with the signal port of control device in described two-node cluster hot backup switching device shifter;
In the high input voltage cable connection end mouth of frequency converter described in each and High voltage output cable connection end mouth and described two-node cluster hot backup switching device shifter, the cable connection end mouth of bypass changeover device connects one to one.
It should be noted that, although the utility model relates to software operation flow process, but improvements of the present invention also do not lie in the improvement of software, and only utilize the existing hardware that can realize corresponding function at present, the control procedure of such as control device is in fact only a series of combinations of judgement, selection etc., very simple, there is much similar product available in the market.
In the utility model, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.Term " multiple " refers to two or more, unless otherwise clear and definite restriction.
Although describe execution mode of the present utility model by reference to the accompanying drawings, but those skilled in the art can make various modifications and variations when not departing from spirit and scope of the present utility model, such amendment and modification all fall into by within claims limited range.
Claims (6)
1. be suitable for a two-node cluster hot backup switching device shifter for high voltage converter, it is characterized in that, comprising:
Bypass changeover device, is suitable for connecting load motor and two frequency converters;
Control device, be connected to described bypass changeover device, this control device is suitable for the status signal according to described frequency converter, is switched to the frequency converter of described load motor frequency modulation by described bypass changeover device.
2. device according to claim 1, is characterized in that,
Described control device is provided with the signal port being suitable for being connected with the status signal transmission port of two described frequency converters respectively by hardwire.
3. device according to claim 1, is characterized in that,
Be provided with communication module in described control device, this communication module is suitable for communicating to connect with the communication module in frequency converter described in two, makes the running parameter in a described frequency converter transfer to frequency converter described in another.
4. device according to claim 1, is characterized in that,
Described bypass changeover device comprises diverter switch, and described diverter switch is suitable for being arranged between two described frequency converters and described load motor;
Wherein, described diverter switch is circuit breaker or isolating switch.
5. device according to claim 1, is characterized in that,
Described bypass changeover device is provided with the cable connection end mouth being suitable for connecting one to one with the high input voltage cable connection end mouth of frequency converter described in each and High voltage output cable connection end mouth.
6. a Dual-Computer Hot-Standby System, is characterized in that, comprise claim 1-5 arbitrary described two-node cluster hot backup switching device shifter, load motor and two frequency converters, described load motor and two described frequency converters are all connected to described two-node cluster hot backup switching device shifter, wherein:
The status signal transmission port of frequency converter described in each is connected with the signal port of control device in described two-node cluster hot backup switching device shifter;
In the high input voltage cable connection end mouth of frequency converter described in each and High voltage output cable connection end mouth and described two-node cluster hot backup switching device shifter, the cable connection end mouth of bypass changeover device connects one to one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845670.3U CN205092799U (en) | 2015-10-28 | 2015-10-28 | Be suitable for high -voltage inverter's two -node cluster hot backup auto -change over device and two -node cluster hot backup system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845670.3U CN205092799U (en) | 2015-10-28 | 2015-10-28 | Be suitable for high -voltage inverter's two -node cluster hot backup auto -change over device and two -node cluster hot backup system |
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| Publication Number | Publication Date |
|---|---|
| CN205092799U true CN205092799U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520845670.3U Expired - Fee Related CN205092799U (en) | 2015-10-28 | 2015-10-28 | Be suitable for high -voltage inverter's two -node cluster hot backup auto -change over device and two -node cluster hot backup system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072985A (en) * | 2019-06-10 | 2020-12-11 | 中国石油化工股份有限公司 | Double-frequency conversion switching system and switching method thereof |
-
2015
- 2015-10-28 CN CN201520845670.3U patent/CN205092799U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112072985A (en) * | 2019-06-10 | 2020-12-11 | 中国石油化工股份有限公司 | Double-frequency conversion switching system and switching method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160316 Termination date: 20181028 |