CN207301784U - A kind of electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC) - Google Patents
A kind of electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC) Download PDFInfo
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Abstract
The utility model provides a kind of electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC), and electrical energy power quality disturbance occurring source is connected by breaker with each I/O input interfaces of tested programmable logic controller (PLC) in the system；The input contact of each relay is connected with each I/O output interfaces of tested programmable logic controller (PLC) respectively in relay group, and the output contact of each relay is sequentially connected in series；Load circuit is in parallel with the series arm that the output contact of each relay is formed.Compared with prior art, a kind of electrical energy power quality disturbance tolerance level test system and method for programmable logic controller (PLC) provided by the utility model, the hookup that tested programmable logic controller (PLC), relay group and load circuit are formed is more in line with the actual conditions of programmable logic controller (PLC) wiring so that the quality of voltage tolerance curve tested being tested Programmable logical controller progress electrical energy power quality disturbance can preferably weigh its and be resistant to performance.
Description
Technical field
It the utility model is related to the automatization testing technique field of low voltage equipment, and in particular to a kind of programmable logic
The electrical energy power quality disturbance tolerance level test system of controller.
Background technology
Power quality problem refers to causing the inclined of the voltage of electrical equipment failure or cisco unity malfunction, electric current or frequency
Difference, mainly including frequency departure, voltage deviation, voltage fluctuation and flicker, three-phase imbalance, instantaneous or transient overvoltage, waveform
Distortion (harmonic wave), voltage dip, temporarily interruption, liter and power supply continuity etc..Wherein, voltage dip is that frequency occurs with short interruptions
Rate highest, influence a kind of power quality problem the most serious.
Programmable logic controller (PLC) (Programmable Controller, PLC) is common in industrial automation
A kind of electrical equipment to voltage dip sensitivity, standard GB/T 22841-2008 are disclosed to PLC progress voltage dips and in short-term
The test specification of immunity experiment is interrupted, but the perturbation experiment only to PLC power ports is briefly described, and is not considered
Influence of the working status such as PLC controlling tests program, the PLC ancillary equipment mode of connection and test data sheet amount to immunity experiment,
Therefore it cannot obtain being more in line with the PLC voltage dip resistance characteristics of actual conditions.
Utility model content
In order to meet the needs of the prior art, the utility model provides a kind of power quality of programmable logic controller (PLC)
Disturb tolerance level test system and method.
The technical solution of the utility model is：
The test system includes：
Electrical energy power quality disturbance occurring source, it passes through breaker and each I/O input interfaces of tested programmable logic controller (PLC)
Connection, to the tested programmable logic controller (PLC) outputting standard supply voltage or test supply voltage；
Relay group, it includes multiple relays；The input contact of each relay may be programmed with described be tested respectively
Each I/O output interfaces connection of logic controller, the output contact of each relay are sequentially connected in series；
Load circuit, it includes the indicator light and power supply of series connection；The output of the load circuit and each relay is touched
The series arm that point is formed is in parallel；
Oscillograph, it includes voltage acquisition terminal and current acquisition terminal；The voltage acquisition terminal is used to gather standard
Supply voltage waveform and test supply voltage waveform, current acquisition terminal are used for the load current ripple for gathering the load circuit
Shape.
Further, optimal technical scheme provided by the utility model is：The test system further includes button switch, uses
In the type for controlling the I/O input interfaces to receive effective incoming level；
The button switch is single-pole double-throw switch (SPDT), it includes a movable contact spring and two stationary contacts；
The movable contact spring is connected with each I/O input interfaces；One stationary contact and the tested Programmable logical controller
The low level terminal connection of device, the high level terminal of another described stationary contact and the tested programmable logic controller (PLC) connect
Connect；The movable contact spring when being connected with a stationary contact it is described effectively incoming level be high level, the movable contact spring and institute
The effectively incoming level is low level during another stationary contact connection stated.
Further, optimal technical scheme provided by the utility model is：The voltage acquisition terminal includes voltage probe,
It is connected on the electric wire between the breaker and tested programmable logic controller (PLC)；The current acquisition terminal includes electric current
Pincers, it is connected on the electric wire between the relay group and load circuit.
Further, optimal technical scheme provided by the utility model is：The electrical energy power quality disturbance occurring source includes three
Phase voltage output channel；
The single-phase voltage that the test supply voltage exports for voltage output passage described in a phase；
The power supply is the single-phase voltage of any phase voltage output channel output in voltage output passage described in remaining two-phase.
Compared with the immediate prior art, the beneficial effects of the utility model are：
A kind of programmable logic controller (PLC) provided by the utility model electrical energy power quality disturbance tolerance level test system, respectively after
The input contact of electric appliance is connected with each I/O output interfaces of tested programmable logic controller (PLC) respectively, and the output of each relay is touched
Point is sequentially connected in series, and load circuit is in parallel with the series arm that the output contact of each relay is formed, the hookup that three is formed
It is more in line with the actual conditions of programmable logic controller (PLC) wiring so that power quality is carried out to tested Programmable logical controller and is disturbed
Dynamic obtained quality of voltage tolerance curve of testing can preferably weigh its tolerance performance.
Brief description of the drawings
Fig. 1：The electrical energy power quality disturbance tolerance level test system of a kind of programmable logic controller (PLC) in the utility model embodiment
System schematic diagram；
Fig. 2：The peripheral circuit diagram of the input/output terminal of programmable logic controller (PLC) is tested in the utility model embodiment；
Fig. 3：The control programming ladder diagram of programmable logic controller (PLC) is tested in the utility model embodiment；
Fig. 4：Tolerance time schematic diagram is disturbed in the utility model embodiment；
Wherein, 1：Electrical energy power quality disturbance occurring source；2：Tested programmable logic controller (PLC)；3：Second host computer；4：First
Host computer；5：Relay group；6：Indicator light；7：Power supply；8：Current clamp；9：Oscillograph；10：Breaker；11：Button switch；12：
Voltage probe；13：Programme Line.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, clearly and completely illustrates the technical scheme in the embodiment of the utility model, it is clear that retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without making creative work, belongs to
The scope of the utility model protection.
Separately below with reference to attached drawing, a kind of electric energy matter of the programmable logic controller (PLC) provided the utility model embodiment
Amount disturbance tolerance level test system illustrates.
Fig. 1 is a kind of electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC) in the utility model embodiment
Unite schematic diagram, as shown in the figure, the electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC) can be with the present embodiment
Including electrical energy power quality disturbance occurring source 1, relay group 5, load circuit and oscillograph 9.Wherein,
Electrical energy power quality disturbance occurring source 1 is connected by breaker 12 with the input interface of tested programmable logic controller (PLC) 2,
And connect outputting standard supply voltage or test supply voltage to each I/O input interfaces.
Relay group 5 includes multiple relays, the input contact of each relay respectively with tested programmable logic controller (PLC) 2
The connection of each I/O output interfaces, the output contact of each relay is sequentially connected in series.
Load circuit includes the indicator light 6 and power supply 7 of series connection.The string that the output contact of load circuit and each relay is formed
Join branch circuit parallel connection.
Oscillograph 9 includes voltage acquisition terminal and current acquisition terminal：Voltage acquisition terminal is used to gather standard power supply electricity
Corrugating and test supply voltage waveform, current acquisition terminal are used for the load current waveform for gathering load circuit.
The input contact of each relay each I/O output interfaces with tested programmable logic controller (PLC) respectively in the present embodiment
Connection, the output contact of each relay are sequentially connected in series, and the series arm of the output contact formation of load circuit and each relay is simultaneously
Connection, the hookup that three is formed are more in line with the actual conditions of programmable logic controller (PLC) wiring so as to tested programmable
Logic control, which carries out the quality of voltage tolerance curve that electrical energy power quality disturbance is tested, can preferably weigh its tolerance performance.
Further, button switch can also be included by system being tested in the present embodiment, be had for control input interface
Imitate the type of incoming level.Specially：
Fig. 2 is the peripheral circuit diagram for the input/output terminal that programmable logic controller (PLC) is tested in the utility model embodiment,
As shown in the figure, button switch 11 is single-pole double-throw switch (SPDT), it includes a movable contact spring and two stationary contacts.
Movable contact spring is connected with each input interface of tested programmable logic controller (PLC) 2, and a stationary contact may be programmed with tested
The low level terminal connection of logic controller 2, the high level terminal of another stationary contact and tested programmable logic controller (PLC) 2 connect
Connect.
Movable contact spring is high level signal with being connected effective incoming level when the stationary contact of low level terminal connects, i.e. I/O is defeated
The standard supply voltage or the high level signal of test supply voltage that incoming interface can receive.As shown in Figure 1, in the present embodiment
The movable contact spring of button switch 11 is connected with being connected the stationary contact of 0V terminals, i.e., effective incoming level is high level.
Movable contact spring is low level with being connected effective incoming level when the stationary contact of high level terminal connects, i.e. I/O inputs connect
The standard supply voltage or the low level signal of test supply voltage that mouth can receive.
Fig. 3 is the control programming ladder diagram that programmable logic controller (PLC) is tested in the utility model embodiment, passes through control
Whole the I/O input interfaces and I/O output interfaces of tested programmable logic controller (PLC) 2 are in working status by program, i.e., full
Load operating conditions.I/O output interfaces are cascaded to form the relation of logical AND by relay group 5, as long as any one I/O is defeated
Outgoing interface because electrical energy power quality disturbance disconnect, all can disconnecting consumers circuit extinguish indicator light 6, this hookup, which is more in line with, to be compiled
I/O output interfaces generally go through the connection mode of intermediate relay conversion in journey logic controller practical application so as to tested
Programmable logical controller, which carries out the quality of voltage tolerance curve that electrical energy power quality disturbance is tested, can preferably weigh its tolerance
Performance.
Wherein, control the software of writing of program can be using conventional programming software, can be according to Programmable logical controller
The programming software that the type selection of device is adapted therewith.Such as it Siemens's FX3U series of PLC is programmed can use GX
Developer softwares.
Further, the present embodiment can be used for according to test supply voltage waveform and load current waveform, obtain tested
The disturbance tolerance time of programmable logic controller (PLC), so as to obtain its electrical energy power quality disturbance tolerance curve.Wherein, during disturbance tolerance
Between be in load current waveform by disturbance quantity disturbance start time to its improper waveform of presentation period.
Fig. 4 is that tolerance time schematic diagram is disturbed in the utility model embodiment, as shown in the figure, testing power supply in the present embodiment
The 4th cycle that the disturbance quantity disturbance moment of voltage is voltage waveform PS Voltage, load current waveform are opened from the moment is disturbed
Improper waveform is presented after the 2.1st cycle to begin, therefore it is 2.1 cycles to disturb tolerance time Tolerance.
Further, oscillograph 9 can be with following structures in the present embodiment：Voltage acquisition terminal includes voltage probe, electricity
Pressure probe is connected on the electric wire between breaker 12 and tested programmable logic controller (PLC) 2.Current acquisition terminal includes electric current
Pincers, current clamp are connected on the electric wire between relay group 5 and load circuit.
Further, electrical energy power quality disturbance occurring source 1 can be with three-phase voltage output channel in the present embodiment.Wherein, mark
Quasi- supply voltage and the single-phase voltage that test supply voltage is phase voltage output channel output, the power supply of load circuit is remaining
The single-phase voltage of any phase voltage output channel output in two-phase voltage output channel.It is same by electrical energy power quality disturbance occurring source 1
When outputting standard supply voltage and supply voltage, or export test supply voltage and supply voltage at the same time easy to keep voltage wave
Shape is consistent with the phase of current waveform.
The test method of the electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC) is carried out in detail below
Explanation.
1st, 1 outputting standard supply voltage of electrical energy power quality disturbance occurring source is controlled, adjusts oscillograph 9 so that standard supply voltage
Waveform is consistent with the phase of load voltage waveform.
2nd, after controlling tested programmable logic controller (PLC) 2 to run the default time under the power supply of standard supply voltage, pass through
Electrical energy power quality disturbance occurring source 1 exports test supply voltage corresponding with test case 1 to tested programmable logic controller (PLC) 2.
Wherein, the electrical energy power quality disturbance amount of test case 1 includes voltage dip amplitude, voltage dip duration and voltage dip starting
Point phase.
(1) voltage dip amplitude is set as 0%Ue, the voltage dip duration be 1min and voltage dip starting point phase
For 0 °, corresponding test supply voltage is exported to tested programmable logic controller (PLC) 2, passes through the first disturbance tolerance level analysis module
Obtain disturbance tolerance time.Repeat to test three times, the interval time of each testing experiment is no less than 10s, will test three times
Disturbance tolerance time final disturbance tolerance time of the minimum value as the test case.
Voltage dip duration and voltage dip starting point phase remain unchanged, and voltage dip amplitude is with the step of 5%Ue
Long increase, corresponding test supply voltage is exported to tested programmable logic controller (PLC) 2, and mould is analyzed by the first disturbance tolerance level
Block obtains disturbance tolerance time.When some voltage dip amplitude is corresponding test three times cannot influence load circuit normal work
Stop test afterwards.
(2) the voltage dip duration remains unchanged, and voltage dip starting point phase remains unchanged the step-length increasing with 45 °
Add, repeat step (1), until voltage dip starting point phase reaches 315 °.
(3) " STOP " button of tested programmable logic controller (PLC) 2 is pressed, disconnects and closes road device 12, terminates experiment.According to step
Suddenly each final disturbance tolerance time that (1) and (2) obtains, draws the electric energy of electrical energy power quality disturbance tolerance curve, i.e. test case 1
Quality disturbance tolerance curve.
3rd, remaining test case is tested according to the test method of test case in step 21, obtains each test case
Electrical energy power quality disturbance tolerance curve.
4th, after the completion of all testing cases, " STOP " button of tested programmable logic controller (PLC) 2 is pressed, disconnects and closing
Road device 12, terminates experiment.According to the electrical energy power quality disturbance tolerance curve of all test cases, tested Programmable logical controller is drawn
The electrical energy power quality disturbance tolerance curve of device.
5th, after replacing tested programmable logic controller (PLC), step 1-4 is repeated, obtains new tested programmable logic control
The electrical energy power quality disturbance tolerance curve of device processed., can be to each electricity after the completion of all tested programmable logic controller (PLC)s are tested
Energy quality disturbance tolerance curve compares and analyzes.
Obviously, those skilled in the art can carry out the utility model various modification and variations without departing from this practicality
New spirit and scope.If in this way, these modifications and variations of the utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these modification and variations.
Claims (4)
- A kind of 1. electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC), it is characterised in that the test system System includes：Electrical energy power quality disturbance occurring source, it is connected by breaker with the supply input interface of tested programmable logic controller (PLC), To the tested programmable logic controller (PLC) outputting standard supply voltage or test supply voltage；The supply input interface and quilt Survey each I/O input interfaces connection of programmable logic controller (PLC)；Relay group, it includes multiple relays；The input contact of each relay respectively with the tested programmable logic Each I/O output interfaces connection of controller, the output contact of each relay are sequentially connected in series；Load circuit, it includes the indicator light and power supply of series connection；The output contact shape of the load circuit and each relay Into series arm it is in parallel；Oscillograph, it includes voltage acquisition terminal and current acquisition terminal；The voltage acquisition terminal is used to gather standard power supply Voltage waveform and test supply voltage waveform, current acquisition terminal are used for the load current waveform for gathering the load circuit.
- 2. a kind of electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC) as claimed in claim 1, it is special Sign is that the test system further includes button switch, for controlling the I/O input interfaces to receive the class of effective incoming level Type；The button switch is single-pole double-throw switch (SPDT), it includes a movable contact spring and two stationary contacts；The movable contact spring is connected with each I/O input interfaces；One stationary contact and the tested programmable logic controller (PLC) Low level terminal connects, another described stationary contact is connected with the high level terminal of the tested programmable logic controller (PLC)；Institute It is high level to state effectively incoming level when movable contact spring is connected with a stationary contact, the movable contact spring with it is described another The effectively incoming level is low level during one stationary contact connection.
- 3. a kind of electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC) as claimed in claim 1, it is special Sign is that the voltage acquisition terminal includes voltage probe, it is connected to the breaker and tested programmable logic controller (PLC) Between electric wire on；The current acquisition terminal includes current clamp, it is connected between the relay group and load circuit On electric wire.
- 4. a kind of electrical energy power quality disturbance tolerance level test system of programmable logic controller (PLC) as claimed in claim 1, it is special Sign is that the electrical energy power quality disturbance occurring source includes three-phase voltage output channel；The single-phase voltage that the test supply voltage exports for voltage output passage described in a phase；The power supply is the single-phase voltage of any phase voltage output channel output in voltage output passage described in remaining two-phase.
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| CN106774252A (en) * | 2016-12-14 | 2017-05-31 | 全球能源互联网研究院 | The electrical energy power quality disturbance tolerance level test system and method for programmable logic controller (PLC) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106774252A (en) * | 2016-12-14 | 2017-05-31 | 全球能源互联网研究院 | The electrical energy power quality disturbance tolerance level test system and method for programmable logic controller (PLC) |
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