CN205791799U - A kind of distribution monitor instrument that can automatically exchange phase sequence - Google Patents
A kind of distribution monitor instrument that can automatically exchange phase sequence Download PDFInfo
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- CN205791799U CN205791799U CN201620500857.4U CN201620500857U CN205791799U CN 205791799 U CN205791799 U CN 205791799U CN 201620500857 U CN201620500857 U CN 201620500857U CN 205791799 U CN205791799 U CN 205791799U
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- phase sequence
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- distribution monitor
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Abstract
This utility model relates to power system monitoring technology on-line field, discloses a kind of distribution monitor instrument that can automatically exchange phase sequence.Described distribution monitor instrument includes microprocessor, analog-digital converter, selector switch array module, memorizer, known capacity Capacitor banks and capacitor fling-cut switch.By described distribution monitor instrument, can automatically judge whether that voltage phase sequence mistake and CT phase sequence and incorrect polarity occur at the debugging initial stage, and the annexation of analog-digital converter and signals collecting line can be switched by exchanging back panel wiring mode when mistake occurs, correct voltage, electric current phase sequence and CT polarity, such that it is able to automatically ensure that monitoring effect, stop that the problem that reactive power releasing and power rate exceed standard occurs, it is to avoid the waste of electric power energy.
Description
Technical field
This utility model relates to power system monitoring technology on-line field, in particular it relates to a kind of distribution monitor instrument that can automatically exchange phase sequence.
Background technology
In power system monitoring technology on-line field, usually using the distribution monitor instrument of band reactive-load compensation, it obtains the meritorious and idle of low-voltage distribution system wait electric parameter for three-phase voltage signal and the three-phase current signal by gathering low-voltage distribution system.Before the use of distribution monitor instrument, must assure that CT (the Current Transformer of many gathering lines of input three-phase voltage signal and three-phase current signal, Current Mutual Inductance) polarity and the voltage phase sequence between them correct, just can calculate the most idle, and by the power factor controlling of distribution system in normal level.
But the complexity due to low-voltage distribution system, during wiring, user is difficult to avoid that not wrong three-phase voltage signal or many gathering lines of three-phase current signal at the scene, thus cause distribution monitor instrument that voltage phase sequence mistake and CT polarity, phase sequence mistake occur, the most not only can not reduce the purpose of the power factor of distribution system, the problem that reactive power releasing and power rate exceed standard can be caused on the contrary, and then affect monitoring effect, waste electric power energy.
Utility model content
Problem for aforementioned existing distribution monitor instrument easy wrong gathering line, this utility model provides a kind of distribution monitor instrument that can automatically exchange phase sequence, can automatically judge whether that voltage phase sequence mistake and CT phase sequence and incorrect polarity occur at the debugging initial stage, and the annexation of analog-digital converter and signals collecting line can be switched by exchanging back panel wiring mode when mistake occurs, correct voltage, electric current phase sequence and CT polarity, such that it is able to automatically ensure that monitoring effect, stop that the problem that reactive power releasing and power rate exceed standard occurs, it is to avoid the waste of electric power energy.
The technical solution adopted in the utility model, provide a kind of distribution monitor instrument that can automatically exchange phase sequence, including microprocessor, analog-digital converter, selector switch array module, memorizer, known capacity Capacitor banks and capacitor fling-cut switch, wherein, described selector switch array module is provided with control end, N number of voltage input end, N number of voltage output end, N number of current input terminal and N number of current output terminal, described selector switch array module is for switching between described voltage input end and described voltage output end and electrical connection and/or switch between described current input terminal and described current output terminal and electrical connection one to one one to one according to by the wiring instruction of described control end input, wherein, N is equal to the number of phases of distribution system to be measured；The described voltage output end of described selector switch array module and described current output terminal are electrically connected the input of described analog-digital converter, the outfan of described analog-digital converter electrically connects described microprocessor, and described microprocessor is also electrically connected the described control end of described selector switch array module, described memorizer and described capacitor fling-cut switch；Described known capacity Capacitor banks is connected in parallel in the electrical interconnection between described selector switch array module and described analog-digital converter, and connects with described capacitor fling-cut switch.
Optimizing, described selector switch array module includes decoder and 2*N2Individual electric-controlled switch；The input pin of described decoder electrically connects described control end, and the output pin of described decoder is electrically connected the control end of each described electric-controlled switch；At a described electric-controlled switch of connecting between voltage input end with described voltage output end described in any two, and at a described electric-controlled switch of connecting between current input terminal with described current output terminal described in any two.Optimize further, when the value of N is 3, the decoder chip that described decoder uses model to be HCTL-2032 DIP32.Described electric-controlled switch is contact switch or relay switch.
Optimizing, the described distribution monitor instrument that can automatically exchange phase sequence also includes the input/output module electrically connecting described microprocessor；Described input/output module includes LCDs and button, or described input/output module includes LCDs and touch screen.
Optimize, the ARM chip that described microprocessor uses model to be STM32F103RCT6.
To sum up, use a kind of distribution monitor instrument that can automatically exchange phase sequence provided by the utility model, have the advantages that (1) can automatically judge whether voltage phase sequence mistake and CT phase sequence and incorrect polarity occur at the debugging initial stage, improve the intellectuality of distribution monitor instrument, thus the level of skill requirement of user can be reduced, applicable crowd is more extensive；(2) annexation of analog-digital converter and signals collecting line can be switched by exchanging back panel wiring mode when mistake occurs, correct voltage, electric current phase sequence and CT polarity, improve the automatization of distribution monitor instrument, without outside is carried out rewiring, thus improve the Consumer's Experience of user, and can avoid bringing safety problem because of rewiring；(3) can automatically calculate correct the most idle, thus reduce the purpose of the power factor of distribution system, and then monitoring effect can be automatically ensured that, stop that the problem that reactive power releasing and power rate exceed standard occurs, it is to avoid the waste of electric power energy.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the circuit structure diagram of the distribution monitor instrument that can automatically exchange phase sequence that this utility model provides.
Fig. 2 is the circuit structure diagram of the selector switch array module that this utility model provides.
Fig. 3 is the method for work flow chart of the distribution monitor instrument that can automatically exchange phase sequence that this utility model provides.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, describe, by way of example, the distribution monitor instrument that can automatically exchange phase sequence that this utility model provides in detail.At this it should be noted that be adapted to assist in for the explanation of these way of example and understand this utility model, but it is not intended that restriction of the present utility model.
Various technology described herein may be used for but is not limited to power system monitoring technology on-line system regions, it is also possible to for other similar field.
The terms "and/or", it it is only a kind of incidence relation describing affiliated partner, three kinds of relations can be there are in expression, such as, A and/or B, can represent: individualism A, individualism B, there are tri-kinds of situations of A and B simultaneously, the terms "/and " it is to describe another kind of affiliated partner relation, two kinds of relations can be there are, such as in expression, A/ and B, can represent: individualism A, two kinds of situations of individualism A and B, additionally, character "/" herein, typicallys represent forward-backward correlation to liking a kind of "or" relation.
Embodiment one
Fig. 1 shows the circuit structure diagram of the distribution monitor instrument that can automatically exchange phase sequence that this utility model provides, Fig. 2 shows the circuit structure diagram of the selector switch array module that this utility model provides, and Fig. 3 shows the method for work flow chart of the distribution monitor instrument that can automatically exchange phase sequence that this utility model provides.What the present embodiment provided includes microprocessor, analog-digital converter, selector switch array module, memorizer, known capacity Capacitor banks and capacitor fling-cut switch, wherein, described selector switch array module is provided with control end CPin, N number of voltage input end, N number of voltage output end, N number of current input terminal and N number of current output terminal, described selector switch array module is for switching between described voltage input end and described voltage output end and electrical connection and/or switch between described current input terminal and described current output terminal and electrical connection one to one one to one according to by the wiring instruction of described control end CPin input, wherein, N is equal to the number of phases of distribution system to be measured；The described voltage output end of described selector switch array module and described current output terminal are electrically connected the input of described analog-digital converter, the outfan of described analog-digital converter electrically connects described microprocessor, and described microprocessor is also electrically connected the described control end CPin of described selector switch array module, described memorizer and described capacitor fling-cut switch；Described known capacity Capacitor banks is connected in parallel in the electrical interconnection between described selector switch array module and described analog-digital converter, and connects with described capacitor fling-cut switch.
As it is shown in figure 1, in the circuit structure of described distribution monitor instrument, owing to distribution system to be measured is three-phase voltage system, thus N value is 3 (for example, it is also possible to when distribution system to be measured is two phase electricity system, N value is 2；When distribution system to be measured is four phase electricity system, N value is 4), described selector switch array module is provided with 3 voltage input ends (VPin1～VPin3), 3 voltage output ends (VPout1～VPout3), 3 current input terminals (IPin1～IPin3) and 3 current output terminals (IPout1～IPout3).Use described distribution monitor instrument treat survey distribution system be monitored time, 3 voltage input ends (VPin1～VPin3) are electrically connected A phase voltage signal gathering line UA, B phase voltage signal gathering line UBWith C phase voltage signal gathering line UC, 3 current input terminals (IPin1～IPin3) are electrically connected A phase current signal gathering line IA, B phase current signal gathering line IBWith C phase voltage signal gathering line IC, 3 voltage output ends (VPout1～VPout3) and 3 current output terminals (IPout1～IPout3) are electrically connected the input of described analog-digital converter；Described selector switch array module is under the control of described microprocessor, switch between described voltage input end (VPin1～VPin3) and described voltage output end (VPout1～VPout3) and electrical connection and/or switch between described current input terminal (IPin1～IPin3) and described current output terminal (IPout1～IPout3) and electrical connection one to one one to one, and then change the annexation of described analog-digital converter and signals collecting line.
The current analog signal of each phase, for the voltage analog signal of each phase is converted to digitized voltage signal, is converted to digitized current signal, in order to described microprocessor can carry out the calculating of electric parameter by described analog-digital converter.Described memorizer is for storing the known electric parameter information of described known capacity Capacitor banks；Described capacitor fling-cut switch is for carrying out switching operation to described known capacity Capacitor banks under the control of described microprocessor；Described microprocessor can be, but not limited to ARM (the Advanced Reduced Instruction Set ComputerMachines using model to be STM32F103RCT6, advanced RISC machines) chip, for whole distribution monitor instrument being managed control, it is achieved automatically exchange the purpose of phase sequence.
As shown in Figure 3, under the control of described microprocessor, the method of work of described distribution monitor instrument can be, but not limited to comprise the steps: that S101. controls capacitor fling-cut switch and disconnects, then receive from analog-digital converter and with each the first corresponding digitized voltage signal and the first digitized current signal；S102. carry out electric parameter calculating according to described first digitized voltage signal and described first digitized current signal, obtain and each the first corresponding electric parameter value；S103. control capacitor fling-cut switch Guan Bi, then receive from analog-digital converter and with each the second corresponding digitized voltage signal and described second digitized current signal；S104. carry out electric parameter calculating according to described second digitized voltage signal and described second digitized current signal, obtain and each the second corresponding electric parameter value；S105. for each phase, the electric parameter difference obtaining described second electric parameter value with described first electric parameter value is calculated；S106. judge that the electric parameter value of all phases is the most for negative value and the most equal with the verification electric parameter of corresponding phase, if the electric parameter value of any one phase is negative value or unequal with the verification electric parameter of corresponding phase, then control between selector switch array module switching voltage input end and voltage output end and one to one between electrical connection and/or switching current input terminal and current output terminal and electrical connection one to one, it is then back to perform step S101, otherwise end step, described verification electric parameter is to be stored in bin and the known electric parameter of corresponding known capacity Capacitor banks.From there through described distribution monitor instrument, can automatically judge whether that voltage phase sequence mistake and CT phase sequence and incorrect polarity occur at the debugging initial stage, and the annexation of analog-digital converter and gathering line can be switched by exchanging back panel wiring mode when mistake occurs, correct voltage, electric current phase sequence and CT polarity, such that it is able to automatically ensure that monitoring effect, stop that the problem that reactive power releasing and power rate exceed standard occurs, it is to avoid the waste of electric power energy.
Optimizing, described selector switch array module includes decoder and 2*N2Individual electric-controlled switch；The input pin of described decoder electrically connects described control end CPin, and the output pin of described decoder is electrically connected the control end of each described electric-controlled switch；At a described electric-controlled switch of connecting between voltage input end with described voltage output end described in any two, and at a described electric-controlled switch of connecting between current input terminal with described current output terminal described in any two.
As shown in Figure 2, in the circuit structure of described selector switch array module, when N value is 3, described selector switch array module includes 18 described electric-controlled switchs (VK1～VK9 and IK1～IK9), described decoder is configured with corresponding and 6 input pins (D0～D5) and 18 output pins (VS1～VS9 and IS1～IS9), in order to the control end of each described electric-controlled switch can electrically connect a different output pin.Described electric-controlled switch is for realizing being opened or closed of circuit under the level effect controlling end, and it can be, but not limited to as contact switch or relay switch；Described decoder is for resolving by the wiring instruction of described control end CPin input, corresponding level signal is exported at each output pin, and then the electric-controlled switch controlling correspondence is turned on and off action accordingly, it can be, but not limited to the decoder chip using model to be HCTL-2032 DIP32, this chip has 32 pins, require (at least to need 26 pins more than minimum number of pins, wherein 18 is output pin, 6 is input pin, 1 power pins and 1 grounding pin).Thus can realize described selector switch array module is carried out the exchange of back panel wiring.
The described distribution monitor instrument that can automatically exchange phase sequence also includes the input/output module electrically connecting described microprocessor；Described input/output module includes LCDs and button, or described input/output module includes LCDs and touch screen.Described LCDs is for showing the information such as duty and the measuring and control data of described distribution monitor instrument, and described button or touch screen are used for providing human-computer interaction device, in order to user carries out manual manipulation to described distribution monitor instrument.Optimize, when the described distribution monitor instrument that can automatically exchange phase sequence also includes button or touch screen, before step S101, also comprise the steps: that S100. receives the phase sequence correction instruction from button or touch screen, perform step S101 to S106 the most successively.Thus can realize a keyization operation of described distribution monitor instrument.
To sum up, the distribution monitor instrument that can automatically exchange phase sequence that the present embodiment is provided, have the advantages that (1) can automatically judge whether voltage phase sequence mistake and CT phase sequence and incorrect polarity occur at the debugging initial stage, improve the intellectuality of distribution monitor instrument, thus the level of skill requirement of user can be reduced, applicable crowd is more extensive；(2) annexation of analog-digital converter and signals collecting line can be switched by exchanging back panel wiring mode when mistake occurs, correct voltage, electric current phase sequence and CT polarity, improve the automatization of distribution monitor instrument, without outside is carried out rewiring, thus improve the Consumer's Experience of user, and can avoid bringing safety problem because of rewiring；(3) can automatically calculate correct the most idle, thus reduce the purpose of the power factor of distribution system, and then monitoring effect can be automatically ensured that, stop that the problem that reactive power releasing and power rate exceed standard occurs, it is to avoid the waste of electric power energy.
As it has been described above, this utility model can preferably be realized.For a person skilled in the art, according to teaching of the present utility model, the distribution monitor instrument that can automatically exchange phase sequence designing multi-form is not required to performing creative labour.In the case of without departing from principle of the present utility model and spirit, these embodiments are changed, revise, replace, integrate and modification still falls within protection domain of the present utility model.
Claims (6)
1. the distribution monitor instrument that can automatically exchange phase sequence, it is characterized in that, including microprocessor, analog-digital converter, selector switch array module, memorizer, known capacity Capacitor banks and capacitor fling-cut switch, wherein, described selector switch array module is provided with control end (CPin), N number of voltage input end, N number of voltage output end, N number of current input terminal and N number of current output terminal, described selector switch array module for switching between described voltage input end and described voltage output end and electrical connection and/or switch between described current input terminal and described current output terminal and electrical connection one to one one to one according to the wiring instruction inputted by described control end (CPin), wherein, N is equal to the number of phases of distribution system to be measured；
The described voltage output end of described selector switch array module and described current output terminal are electrically connected the input of described analog-digital converter, the outfan of described analog-digital converter electrically connects described microprocessor, and described microprocessor is also electrically connected the described control end (CPin) of described selector switch array module, described memorizer and described capacitor fling-cut switch；
Described known capacity Capacitor banks is connected in parallel in the electrical interconnection between described selector switch array module and described analog-digital converter, and connects with described capacitor fling-cut switch.
A kind of distribution monitor instrument that can automatically exchange phase sequence, it is characterised in that described selector switch array module includes decoder and 2*N2Individual electric-controlled switch；
The input pin of described decoder electrically connects described control end (CPin), and the output pin of described decoder is electrically connected the control end of each described electric-controlled switch；
At a described electric-controlled switch of connecting between voltage input end with described voltage output end described in any two, and at a described electric-controlled switch of connecting between current input terminal with described current output terminal described in any two.
A kind of distribution monitor instrument that can automatically exchange phase sequence, it is characterised in that when the value of N is 3, the decoder chip that described decoder uses model to be HCTL-2032 DIP32.
A kind of distribution monitor instrument that can automatically exchange phase sequence, it is characterised in that described electric-controlled switch is contact switch or relay switch.
A kind of distribution monitor instrument that can automatically exchange phase sequence, it is characterised in that the described distribution monitor instrument that can automatically exchange phase sequence also includes the input/output module electrically connecting described microprocessor；
Described input/output module includes LCDs and button, or described input/output module includes LCDs and touch screen.
A kind of distribution monitor instrument that can automatically exchange phase sequence, it is characterised in that the ARM chip that described microprocessor uses model to be STM32F103RCT6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620500857.4U CN205791799U (en) | 2016-05-26 | 2016-05-26 | A kind of distribution monitor instrument that can automatically exchange phase sequence |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620500857.4U CN205791799U (en) | 2016-05-26 | 2016-05-26 | A kind of distribution monitor instrument that can automatically exchange phase sequence |
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| CN205791799U true CN205791799U (en) | 2016-12-07 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914889A (en) * | 2016-05-26 | 2016-08-31 | 成都星宇节能技术股份有限公司 | Power distribution monitoring instrument capable of changing phase sequence automatically and working method thereof |
| CN107276062A (en) * | 2017-06-21 | 2017-10-20 | 珠海格力电器股份有限公司 | Correct a mistake method, device and the electrical equipment of wiring |
| CN107910715A (en) * | 2017-06-19 | 2018-04-13 | 国网浙江省电力公司湖州供电公司 | A kind of thread-changing formula terminal box |
| CN109270315A (en) * | 2018-10-31 | 2019-01-25 | 国网四川省电力公司广元供电公司 | Two-phase inlet-outlet line polarity does not have a power failure commutation circuit |
| CN115754892A (en) * | 2023-01-06 | 2023-03-07 | 山东计保电气有限公司 | Electric energy metering line checking and error correcting method and device |
-
2016
- 2016-05-26 CN CN201620500857.4U patent/CN205791799U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914889A (en) * | 2016-05-26 | 2016-08-31 | 成都星宇节能技术股份有限公司 | Power distribution monitoring instrument capable of changing phase sequence automatically and working method thereof |
| CN107910715A (en) * | 2017-06-19 | 2018-04-13 | 国网浙江省电力公司湖州供电公司 | A kind of thread-changing formula terminal box |
| CN107276062A (en) * | 2017-06-21 | 2017-10-20 | 珠海格力电器股份有限公司 | Correct a mistake method, device and the electrical equipment of wiring |
| CN109270315A (en) * | 2018-10-31 | 2019-01-25 | 国网四川省电力公司广元供电公司 | Two-phase inlet-outlet line polarity does not have a power failure commutation circuit |
| CN115754892A (en) * | 2023-01-06 | 2023-03-07 | 山东计保电气有限公司 | Electric energy metering line checking and error correcting method and device |
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Granted publication date: 20161207 Effective date of abandoning: 20190219 |