CN103869196B - Electricity recorder analyser - Google Patents

Electricity recorder analyser Download PDF

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Publication number
CN103869196B
CN103869196B CN201410125460.7A CN201410125460A CN103869196B CN 103869196 B CN103869196 B CN 103869196B CN 201410125460 A CN201410125460 A CN 201410125460A CN 103869196 B CN103869196 B CN 103869196B
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signal
cabinet
loop
main frame
gear
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CN201410125460.7A
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CN103869196A (en
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方春明
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北京同控电力系统技术有限公司
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Abstract

The invention provides electricity recorder analyser, comprise: the main frame of front-collection device and upper control analytical engine is arranged in full almag cabinet, the liquid crystal display of upper control analytical engine and cabinet are that eversion type vibrational power flow is outside cabinet, this liquid crystal display is connected by the incline of rotating shaft with the top cover of cabinet, and this liquid crystal display is connected with main frame by the data line in rotating shaft; The outside surface of the top cover of cabinet is provided with the keyboard and mouse touch pad that are connected with main frame, and the degree of depth of the display screen indent of liquid crystal display is greater than the height of keyboard; The rear wall of above-mentioned cabinet is provided with signals collecting interface corresponding to front-collection device, the sidewall of cabinet is provided with the power supply interface of front-collection device and main frame, and respective hosts outreach interface.The communication robust that electricity (waveform) recorder analyser that the invention solves separate type exists is poor, and inconvenient problem with use, improves the performance of equipment.

Description

Electricity recorder analyser

Technical field

The present invention relates to circuit field, in particular to electricity recorder analyser.

Background technology

Electricity (waveform) recorder analyser is a kind of Comprehensive Signal Processing collection analysis instrument, tested electric signals carries out isolating by it, signal conversion, to convert digital signal to, store the digital signal after conversion according to certain sampling interval through A/D, and the digital signal of storage is shown on screen in the mode of graph curve, finally various analyzing and processing is carried out to the graph curve data of display.

The structural representation of electricity (waveform) recorder analyser as shown in Figure 1, this electricity (waveform) recorder analyser comprises: signal conversion module, signal amplification module, multiway analog switch, A/D transducer, internal memory RAM, built-in industrial control machine and logic control device, Ethernet interface, upper notebook computer etc.Specific works mode is as follows:

(1) access of external signal: each passage has 1 pair of input terminal, external signal is introduced directly into the signal conversion module (the signal transformation relation of each passage immobilizes separately) of each passage through input terminal;

(2) signal carries out (isolation) conversion: the process such as signal conversion module is isolated signal, dividing potential drop, unsteady flow, are transformed into the treatable small-signal of general mimic channel (generally at below 10V) by input signal.

(3) signal amplifies: signal is transformed into demarcation is unified, A/D transducer acceptable standard signal by signal amplification module.

(4) signal multy-way switching: each standard signal after amplifying process gives A/D transducer after multiway analog switch switches successively by control overflow.

(5) analog to digital conversion: convert the simulating signal sending into A/D transducer to digital signal.

(6) data temporary storage: the digital signal obtained after analog to digital conversion is sent into internal memory RAM, and temporarily preserves.

(7) forwarding of data: after the digital signal built-in industrial control machine in internal memory and logic control device, then give upper notebook computer on Ethernet interface.

(8) through engineering approaches of data and display: the data received are converted to the quantities that truly can reflect external signal by upper notebook computer by certain transformational relation, and be presented on screen in the mode of squiggle or numerical value simultaneously.

(9) analyzing and processing of data.

(10) preservation of data.

In above-mentioned electricity (waveform) recorder analyser, signal conversion module, signal amplification module, multiway analog switch, A/D transducer, internal memory RAM, built-in industrial control machine and logic control device can be referred to as front-collection device, and upper notebook computer also can be called upper control analytical engine, as shown in Figure 1, the front-collection device of this recorder analyser and upper control analytical engine are separate type, need between front-collection device with upper control analytical engine to adopt ethernet line or USB line to be connected, can not get ensureing in the reliability of industry spot like this, such as interface loosens and causes communicating interrupt, on-the-spot electrical Interference causes too greatly communication to make mistakes, interface driver is incompatible causes the problems such as communication abnormality.The operating mode of non-volatile recording data (as the work such as electric energy quality monitoring, the test of wind power regulating power all need several days time) is needed for some, the continuous firing stability of general commercial computer cannot ensure, uncertainty is brought to the measurement of signal, and moveable civilian notebook computer is placed on unserviced industry spot for a long time, is also great test to the security of equipment.

The communication robust existed for electricity (waveform) recorder analyser of above-mentioned separate type is poor, and inconvenient problem with use, not yet proposes effective solution at present.

Summary of the invention

The object of the present invention is to provide a kind of electricity recorder analyser, to solve the above problems.

Provide electricity recorder analyser in an embodiment of the present invention, front-collection device and upper control analytical engine are structure as a whole, wherein, the main frame of front-collection device and upper control analytical engine is arranged in full almag cabinet, the liquid crystal display of upper control analytical engine and cabinet are that eversion type vibrational power flow is outside cabinet, this liquid crystal display is connected by the incline of rotating shaft with the top cover of cabinet, and this liquid crystal display is connected with main frame by the data line in rotating shaft; The outside surface of the top cover of cabinet is provided with the keyboard and mouse touch pad that are connected with main frame, and the degree of depth of the display screen indent of liquid crystal display is greater than the height of keyboard; The rear wall of above-mentioned cabinet is provided with signals collecting interface corresponding to front-collection device, the sidewall of cabinet is provided with the power supply interface of front-collection device and main frame, and respective hosts outreach interface;

Every bar passage of front-collection device is provided with gear control loop, and it is provided with pair of input terminals, and the external signal that this input terminal receives transfers to signal transformation loop through gear control loop; Each gear control loop includes: the programmable logic controller (PLC), triode array, relay group and the some divider resistances that are connected successively, for the gear control signal issued according to upper control analytical engine, by the gear switch on the passage of place to corresponding gear.

The electricity recorder analyser that the embodiment of the present invention provides adopts front-collection device and the integrated design of upper control analytical engine, adopt full almag cabinet simultaneously, display adopts cover up turning type, and in cabinet, be provided with main frame and the front-collection device of upper control analytical engine, thus signal transacting and collecting part and figure are shown, data processing and storage area are organically integrated as a whole, eliminate the external netting twine or USB line that may cause loose contact, the communication robust that electricity (waveform) recorder analyser solving separate type exists is poor, inconvenient problem with use, improve the performance of equipment.

Accompanying drawing explanation

Fig. 1 shows the structural representation of electricity (waveform) recorder analyser in correlation technique;

Fig. 2 shows the front view of the electricity recorder analyser that the embodiment of the present invention provides;

Fig. 3 a shows the structural representation of the electricity recorder analyser that the embodiment of the present invention provides;

Fig. 3 b shows the structural representation of the gear control loop that the embodiment of the present invention provides;

The gear control loop repeat circuit group that Fig. 4 shows the embodiment of the present invention to be provided drives the circuit theory diagrams of some divider resistances;

Fig. 5 shows the structural representation of the electricity recorder analyser that the embodiment of the present invention provides;

Fig. 6 shows the structural representation of the electricity recorder analyser that the embodiment of the present invention provides;

Fig. 7 shows the structural representation in the overvoltage protection loop that the embodiment of the present invention provides.

Embodiment

Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.

The front view of electricity recorder analyser (also can be called electricity (waveform) recorder analyser) as shown in Figure 2, front-collection device and upper control analytical engine are structure as a whole, wherein, the main frame of front-collection device and upper control analytical engine is arranged in full almag cabinet 10, the liquid crystal display 12 of upper control analytical engine is eversion type structure (i.e. cover up turning type with cabinet 10, be similar to the display screen of notebook) be arranged on outside cabinet, liquid crystal display 12 is connected with the incline of the top cover 16 of cabinet 10 by rotating shaft 14, liquid crystal display 12 is connected with above-mentioned main frame by the data line in rotating shaft 14,

The outside surface of the top cover 16 of cabinet 10 is provided with the keyboard 18 and mouse touch pad 19 (such as: Touchpad touch pad) that are connected with main frame, and the degree of depth of display screen 13 indent of liquid crystal display 12 is greater than the height of keyboard 18;

The rear wall of cabinet 10 is provided with signals collecting interface corresponding to front-collection device, the sidewall of cabinet 10 is provided with the power supply interface of front-collection device and main frame, and respective hosts outreach interface.Wherein signals collecting interface can configure according to actual needs with the concrete quantity outreaching interface, such as: outreaching interface can comprise: interface etc. when 2 self-adaptation Ethernet interfaces (e.g., being applicable to the interface of 10/100/1000Mbps), 5 USB interface, 1 RS485 interface and 1 differential type B code pair.

The electricity recorder analyser of the present embodiment adopts front-collection device and the integrated design of upper control analytical engine, adopt full almag cabinet simultaneously, display adopts cover up turning type, and in cabinet, be provided with main frame and the front-collection device of upper control analytical engine, thus signal transacting and collecting part and figure are shown, data processing and storage area are organically integrated as a whole, eliminate the external netting twine or USB line that may cause loose contact, the communication robust that electricity (waveform) recorder analyser solving separate type exists is poor, inconvenient problem with use, improve the performance of equipment.

Wherein, the main frame of the present embodiment can be configure higher main frame, such as configure high-performance CPU, Large Copacity solid state hard disc etc., based on this, above-mentioned main frame can comprise: the double-core CPU (such as IntelCore2Duo2.4GHz), 4GB internal memory (such as: 4GBDDR2800MHz), 256GB hard disk (such as: the technical grade solid state hard disc of SATA) etc. of 2.4GB.Consider that the environment of outdoor study is poor, above-mentioned keyboard can be waterproff keyboard (such as: 88 key silica gel waterproff keyboards).

In addition, the almag shell that liquid crystal display can also adopt 3mm thick, and high resolving power, low temperature resistant, high brightness large liquid crystal display, its index: be of a size of 15.4 inches, resolution is 1280*800, brightness is 700 lumens, visual under high light; Normal range of operation at-30 DEG C ~+50 DEG C, low temperature resistant and wide temperature range type.

Certainly, above-mentioned cabinet is also provided with bottom ventilating opening, cabinet can also arrange heelpiece, to reduce the wear intensity etc. of cabinet.

The instrument of this structure both can be used alone, also can by the computer in Ethernet and a distant place with the use of, and can the parallel connection of multiple stage instrument use, in parallel use ensures each instrument synchronous acquisition.Instrument provides multiple kinds so that when carrying out the test of wind power tracking power, can easily with the control system interface of wind energy turbine set obtaining dispatch send gain merit, idlely distantly establish value.

Based on above-mentioned electricity recorder analyser, the present embodiment also improves its front-collection device, the structural representation of electricity recorder analyser as shown in Figure 3 a, its every bar passage is provided with gear control loop 22, it is provided with pair of input terminals 221, and the external signal that this input terminal receives transfers to signal transformation loop 24 through gear control loop; The structural representation of gear control loop as shown in Figure 3 b, each gear control loop 22 includes: the programmable logic controller (PLC) 22a, triode array 22b, relay group 22c and the some divider resistances that are connected successively, for the gear control signal issued according to upper control analytical engine 20, by the gear switch on the passage of place to corresponding gear.Wherein, programmable logic controller (PLC) 22a can adopt GAL16V8, and triode array 22b can adopt MC1413, and the relay in relay group 22c can adopt DSP2A.Wherein, above-mentioned some divider resistances are not illustrated in figure 3, and R1, R1A, R2, R2A, R3, R3A of illustrating in the diagram are these divider resistances.

The present embodiment, for three relays, is respectively J1:DSP2A, J2:DSP2A and the J3:DSP2A in Fig. 3 b; CHn_H and CHn_L in figure is a high position and the low level of two gear control inputs control words of passage n, and working as CHn_H=0, is the most high-grade during CHn_L=0, CHn_J1, CHn_J2, CHn_J3 export be low, relay J 1, J2, J3 all not excitations.Gear control loop repeat circuit group as shown in Figure 4 drives the circuit theory diagrams of some divider resistances, it is the final execution part of gear control loop, namely determine whether each divider resistance drops into by the different conditions combination of relay group, finally determine concrete dividing potential drop when gear; Wherein, R1=2M Ω, R2=1.6M Ω, R3=360M Ω, R1A=2M Ω, R2A=1.6M Ω, R3A=360M Ω, R4=80K Ω; All not closing with the node of all relays, for the passage of alternating current-direct current 2000V, 1000V, 200V, 20V, is now 2000V shelves;

Work as CHn_H=0, it is time top grade during CHn_L=1, CHn_J1 exports as high, CHn_J2, CHn_J3 export be low, relay J 1 excitation, J2, J3 all not excitations, in Fig. 4, node J1.1, J1.2 of J1 relay is closed, the node of J2, J3 relay does not all close, and for the passage of alternating current-direct current 2000V, 1000V, 200V, 20V, is now 1000V shelves;

Work as CHn_H=1, it is time low grade during CHn_L=0, CHn_J1, CHn_J2 export as high, CHn_J3 output is low, the equal excitation of relay J 1, J2, and J3 is excitation not, in Fig. 4, node J2.1, J2.2 of node J1.1, J1.2, J2 relay of J1 relay are all closed, the node of J3 relay does not all close, and for the passage of alternating current-direct current 2000V, 1000V, 200V, 20V, is now 200V shelves;

Work as CHn_H=1, it is deep low gear during CHn_L=1, CHn_J1, CHn_J2, CHn_J3 export and are height, relay J 1, the equal excitation of J2, J3, in Fig. 4, node J3.1, J3.2 of node J2.1, J2.2, J3 relay of node J1.1, J1.2, J2 relay electrical equipment of J1 relay are all closed, for the passage of alternating current-direct current 2000V, 1000V, 200V, 20V, be now 20V shelves.

TRIPn in Fig. 3 b is overvoltage protection signal (option); when overvoltage protection signal TRIPn is high; CHn_J1, CHn_J2, CHn_J3 output is all forced low; relay J 1, J2, J3 all not excitations; in Fig. 4, the node of all relays does not all close; for the passage of alternating current-direct current 2000V, 1000V, 200V, 20V, now for being forced 2000V shelves.

Signal transformation loop 24 in the present embodiment specifically can comprise: isolate signal, the signal conversion module of the process such as dividing potential drop, unsteady flow and carry out amplifying the signal amplification module of process to signal.

Electricity recorder analyser shown in Fig. 3 a is except comprising above-mentioned device, other device in correlation technique can also be adopted to realize its function to circuit record analysis, such as, multiway analog switch 25, A/D transducer 26 and buffer 27 is connected after signal transformation loop 24, the function of each device is identical with the function in Fig. 1, repeats no more here.Certainly, this electricity recorder analyser also can adopt other similar structures to realize.

Every bar passage of the electricity recorder analyser of the present embodiment is provided with gear control loop 22, this gear control loop 22 can according to current gear control signal by programmable logic controller (PLC) 22a, the triode array 22b of its inside and relay group 22c, by the gear switch on the passage of place to corresponding gear, the input reference signal of each like this passage does not need to be single fixing again, can in each gear inner conversion, extend electricity recorder analyser application scenarios, and this structure is simple, be easy to realize.

Consider in structure shown in Fig. 1 and Fig. 3 a, each channel signal is before carrying out A/D conversion, the switching through analog multichannel switch is needed to control, acquisition rate is difficult to improve, and can not realize real synchronous, also occurred simultaneously acquisition channel number directly may affect the highest sampling rate, as 100kHz can be reached when only gathering a channel signal, but just can only with the speed collection of about 6kHz when gathering 16 passages.Based on this, the present embodiment improves above-mentioned electricity recorder analyser, the structural representation of concrete electricity recorder analyser as shown in Figure 5, this electricity recorder analyser is except comprising above-mentioned gear control loop 22 and signal transformation loop 24, the output terminal being also included in the signal transformation loop 24 of every bar passage is all connected with A/D transducer 32, for the simulating signal that place passage receives is converted to digital signal, then digital signal is sent to buffer 34, each channel acquisition frequency can reach 409.6kHz.

The mode of above-mentioned employing every channel setting A/D transducer can make single channel and multichannel acquisition rate be consistent, bring great convenience to user like this, no longer need when arranging acquisition rate consider passage number, as long as and consider test needs.

For small-signal (as: generator rotor current shunt output voltage ratings is at below 75mV) input channel, due to input impedance lower (being generally less than 1000 ohm), if there is signal wrong (as access PT100 lies prostrate voltage etc.), electricity recorder analyser is easy to just burnt, and security can not get ensureing.Based on this, on the electricity recorder analyser basis shown in Fig. 5, Fig. 6 provides a kind of structural representation of electricity recorder analyser, in this figure, every bar passage is provided with overvoltage protection loop 42, the input end in this overvoltage protection loop is connected with signal transformation loop 24, to receive through signal transformation loop 24 amplifying signal, produces overvoltage protection signal according to this amplifying signal; The output terminal in overvoltage protection loop 42 is connected with gear control loop 22, and this gear control loop 22, also for when overvoltage protection signal is high level, is forced the gear switch on the passage of place to most high tap position.

The concrete structure in above-mentioned overvoltage protection loop shown in reference diagram 7, can comprise: the first resistance R5 be connected with signal transformation loop;

The comparer 62 be connected with the other end of the first resistance R5;

The the second resistance R6 be connected with the first resistance R5 and comparer 62 wires, the other end ground connection of the second resistance R6.In this structure, suppose that the specified output (input equals the output during ratings of set position) of the signal transformation loop of each passage is 10K Ω for 5V, R5 are 5K Ω, R6, the signal transformation loop output signal of actual input correspondence is through resistance R5, R6 divides and is depressed into himself 2/3, signal after dividing potential drop and 5V compare, when signal is less than 5V, comparer 62 exports as low level, show that input signal does not exceed 1.5 times of gear ratings, protection is failure to actuate, when this signal is greater than 5V, comparer 62 exports as high level, show that input signal has exceeded 1.5 times of gear ratings, protection act, this signal outputs in the programmable logic controller (PLC) 22a (being specifically as follows GAL16V8) in Fig. 3 b, the gear of this passage is directly forced to most high tap position by it.In this overvoltage protection mode, when the value of input voltage exceedes 1.5 times of set gear, protection act, and to force gear switch, to the most high tap position of this passage, like this, even if signal wrong passage also can not be burnt, to ensure that the security of instrument.

Electricity recorder analyser shown in Fig. 6 can realize following functions:

(1) access of external signal: each passage has 1 pair of input terminal, external signal is introduced directly into the gear control loop of each passage through input terminal.

(2) gear controls and switches: the programmable logic controller (PLC) of gear control loop accepts the gear control command of upper control analytical engine setting, and gear control loop by gear extremely corresponding for gear switch, and carries out first time signal conversion to input signal.If the overvoltage protection circuit behavior of this passage, then the output of programmable logic controller (PLC) is forced the most high-grade, thus controls gear control loop and force gear to be set to most high tap position.The signal of input signal after the first time signal conversion of gear switch loop gives the signal transformation loop of this passage.

(3) signal carries out (isolation) conversion: the process such as signal transformation loop is isolated signal, dividing potential drop, unsteady flow, are transformed into the treatable small-signal of general mimic channel (generally at below 10V) by input signal.

(4) signal amplifies: signal is transformed into by the signal amplification unit of signal transformation loop to be demarcated unified, that A/D transducer can receive standard signal and gives A/D transducer corresponding to this passage and protective loop.

(5.1) protection identifies: compare with the ratings of input A/D standard signal after the signal in input overvoltage protection loop first narrows down to itself 2/3 (being equal to input signal to compare with the ratings of 1.5 times) again; when input signal is less than 1.5 times of ratings, protective loop exports as low, and when input signal is greater than 1.5 times of ratings, protective loop exports as high.The output signal in overvoltage protection loop gives the programmable logic controller (PLC) of gear control loop.

(5.2) analog to digital conversion: convert the simulating signal sending into A/D transducer to digital signal.

(6) data temporary storage: the digital signal obtained after being changed by A/D sends into buffer (such as: internal memory), and temporarily preserves.

(7) through engineering approaches of data and display: the data received are converted to the quantities that truly can reflect external signal by upper control analytical engine by certain transformational relation, and be presented on screen in the mode of squiggle or numerical value simultaneously.

(8) above-mentioned curve or numerical value are carried out to the analyzing and processing of data.

(9) above-mentioned data and analysis result is preserved.

Above embodiment is by the independent program control stepping of each passage (such as: every passage 4 gears), well solve that each channel measurement is range limited, the shortcoming of signal adaptation scarce capacity, can configure most suitable passage according to conventional signal characteristic during actual use, concrete passage comprises:

A) alternating voltage passage: each alternating voltage channels designs AC15V, 150V, 750V, 1500V fourth gear, user freely can be arranged according to the concrete condition of input signal, both 150V shelves can have been adopted to measure and gathered the 690V voltage that PT voltage, employing 750V shelves measurement collection 220V, 380V and Wind turbines export, the residual voltage (PT voltage is about 3V) adopting 15V shelves measurement collection generator, the adaptable occasion of same passage is greatly improved.

B) high voltage ac/dc voltage channel: each combined-voltage channels designs DC20V, 200V, 1000V, 2000V fourth gear (AC14V, 140V, 700V, 1400V fourth gear), user freely can be arranged according to the concrete condition of input signal, both can work as alternating voltage passage to use, and also can work as DC voltage passage and use.

C) low-voltage AC/DC voltage channel: each combined-voltage channels designs DC200mV, 2V, 20V, 200V fourth gear (AC140mV, 1.4V, 14V, 140V fourth gear), user freely can be arranged according to the concrete condition of input signal, both can work as alternating voltage passage to use, and also can work as DC voltage passage and use.

D) alterating and direct current circulation road: each ac and dc current channel setting gear is 1H, H/5, H/25,20mA fourth gear, wherein H represents the specified range (as 5A, 50A, 2000A etc.) of forcipated mutual-inductor used, alternating current adopts pincerlike (or flexible) mutual inductor, and the direct current 20mA electric current that transmitter exports directly inputs.

In above-described embodiment; the problem adopting the method for automatic overvoltage protection to solve small-range passage easily to burn; such as: when the value of input voltage exceedes 1.5 times of set gear; protection act; and force gear switch to the most high tap position of this passage; like this, even if signal wrong passage also can not be burnt, ensure that the security of instrument.As the passage for generator rotor current shunt output voltage, current same quasi-instrument amount of imports definite value is generally 100mV, input impedance lower (being generally less than 1000 ohm), employing range is 200mV, 2V, 20V, the program control passage of transferring the files of 200V, the 200mV shelves input impedance of this passage is 2000 ohm, this shelves are adopted when measuring shunt output voltage, if the 100V voltage of PT or other high voltage are accessed this passage by mistake during wiring, owing to exceeding 1.5 times of set gear 200mV, gear is also forced to 200V shelves by the protective loop action of this passage, and the input impedance of 200V shelves is 2 megaohms, even if the voltage of kilovolt also can not be burnt in input, the security of this sampling instrument obtains great guarantee.

In above embodiment, front-collection device and the integrated design of upper control analytical engine, have the following advantages:

The independence of i, instrument uses ability to be improved, and no longer needs to connect with extra computer, bring great convenience to user during use.

The structural design of the full almag cabinet of ii, instrument integrated, makes the soundness of instrument be greatly improved, and goes for complicated industrial environment.

Iii, employing high resolving power, low temperature resistant, the large liquid crystal display of high brightness, no matter make instrument can normally work under the field (-30 °) or strong sunlight of north cold.

IV, display adopt cover up turning type, and bring with using the sensation that notebook computer is the same to user, convenience is greatly improved, and close when not using screen, and the almag shell that 3mm is thick provides fabulous protection to fragile liquid crystal display.

The security that V, built-in high-performance CPU (double-core 2.4G), Large Copacity internal memory (4GB), high-capacity industrial level solid state hard disc (256GB) make the data-handling capacity of instrument, storage capacity and data store obtains powerful guarantee.

Vi, abundant interface resource (when 2 10/100/1000Mbps self-adaptation Ethernet interfaces, 5 USB2.0 interfaces, 1 RS485 interface, 1 differential type B code pair interface) ensure that the ability that instrument is connected with various external unit, instrument both can be used alone, also can by the computer in Ethernet and a distant place with the use of, and can the parallel connection of multiple stage instrument use, in parallel use ensures each instrument synchronous acquisition.Instrument provides multiple kinds so that when carrying out the test of wind power tracking power, can easily with the control system interface of wind energy turbine set obtaining dispatch send gain merit, idlely distantly establish value.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. an electricity recorder analyser, it is characterized in that, front-collection device and upper control analytical engine are structure as a whole, wherein, the main frame of described front-collection device and described upper control analytical engine is arranged in full almag cabinet, the liquid crystal display of described upper control analytical engine and described cabinet are that eversion type vibrational power flow is outside described cabinet, described liquid crystal display is connected by the incline of rotating shaft with the top cover of described cabinet, and described liquid crystal display is connected with described main frame by the data line in rotating shaft;
The outside surface of the top cover of described cabinet is provided with the keyboard and mouse touch pad that are connected with described main frame, and the degree of depth of the display screen indent of described liquid crystal display is greater than the height of described keyboard;
The rear wall of described cabinet is provided with signals collecting interface corresponding to described front-collection device, the sidewall of described cabinet is provided with the power supply interface of described front-collection device and described main frame, and corresponding described main frame outreach interface;
Every bar passage of described front-collection device is provided with gear control loop, and it is provided with pair of input terminals, and the external signal that this input terminal receives transfers to signal transformation loop through described gear control loop; Each described gear control loop includes: the programmable logic controller (PLC), triode array, relay group and the some divider resistances that are connected successively, for the gear control signal issued according to upper control analytical engine, by the gear switch on the passage of place to corresponding gear.
2. electricity recorder analyser according to claim 1, is characterized in that, described main frame comprises: double-core CPU, 4GB internal memory of 2.4GB, 256GB hard disk.
3. electricity recorder analyser according to claim 1, is characterized in that, described in outreach interface and comprise: interface when 2 self-adaptation Ethernet interfaces, 5 USB interface, 1 RS485 interface and 1 differential type B code pair.
4. electricity recorder analyser according to claim 1, it is characterized in that, the output terminal of the described signal transformation loop of every bar passage is all connected with A/D transducer, for the simulating signal that place passage receives is converted to digital signal, then described digital signal is sent to buffer.
5. electricity recorder analyser according to claim 1, it is characterized in that, every bar passage is provided with overvoltage protection loop, the input end in described overvoltage protection loop is connected with described signal transformation loop, to receive through described signal transformation loop amplifying signal, produce overvoltage protection signal according to described amplifying signal; The output terminal in described overvoltage protection loop is connected with described gear control loop, and described gear control loop, also for when described overvoltage protection signal is high level, is forced the gear switch on the passage of place to most high tap position.
6. electricity recorder analyser according to claim 5, is characterized in that, described overvoltage protection loop comprises:
The first resistance be connected with described signal transformation loop;
The comparer be connected with the other end of described first resistance;
The second resistance be connected with between described first resistance with described comparer, the other end ground connection of described second resistance.
CN201410125460.7A 2014-03-28 2014-03-28 Electricity recorder analyser CN103869196B (en)

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