CN107677912B - A kind of detection device and detection method of low pressure automatic phase selecting load equalizer - Google Patents
A kind of detection device and detection method of low pressure automatic phase selecting load equalizer Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
This application discloses the detection devices and detection method of a kind of low pressure automatic phase selecting load equalizer, the detection device includes isolating transformer, lv contactor, detection control apparatus and load, wherein, the input terminal of the isolating transformer is connected to low pressure 380V platform and becomes outlet, the on high-tension side wiring group of the isolating transformer be the wiring group of triangle and low-pressure side be it is star-like, the output end of the isolating transformer connects three-phase four wire system；This equipment can be before low pressure automatic phase selecting load equalizer comes into operation, carry out the detection of performance function, some substandard products are avoided to come into operation, to cause unnecessary economic loss, it avoids using traditional detection mode, to avoid influencing the normal operation of power supply enterprise, prevents operator from getting an electric shock using conventional on-site detection mode, guarantee the safety of operator.
Description
Technical field
This application involves a kind of detection device technical field more particularly to a kind of low pressure automatic phase selecting load equalizers
Detection device and detection method.
Background technique
Currently, China's low-voltage network all matches net mode using three-phase four-wire system substantially, almost all of distribution transforming all exists
The phenomenon that three-phase imbalance, and energy imbalance has seriously affected the regular supply of electric energy close to absolutely, so that low pressure is certainly
Dynamic phase selection load equalizer large-scale application in power grid, three-phase imbalance phenomenon to be adjusted.
Currently, there are three uneven adjustings of some devices in the low pressure automatic phase selecting load equalizer to come into operation
The problems such as testing staff requires, precision is poor and failure rate is higher is not achieved in effect, causes many economic damages to power grid enterprises
It loses.Due to automatic phase selecting balancing device at the scene installation and operation when, it usually needs carry out the performance of automatic phase selecting balancing device, function
Energy and system testing, and then need to carry out under power-off condition when testing automatic phase selecting balancing device, by artificial
It is tested, can thus greatly increase the power failure amount of power supply enterprise, influence the normal operation of power supply enterprise；If with electrical measurement
If examination, operator will have electric shock risk, not have due guarantee to personal safety.
Therefore, the detection device for needing to invent a kind of low pressure automatic phase selecting load equalizer, in low pressure automatic phase selecting
Before load equalizer comes into operation, it can realize and the performance, function and system of device are tested.
Summary of the invention
It is low to solve this application provides the detection device and detection method of a kind of low pressure automatic phase selecting load equalizer
Press the test problems of automatic phase selecting load equalizer.
In order to solve the above-mentioned technical problem, the embodiment of the invention discloses following technical solutions:
The embodiment of the invention provides a kind of detection devices of low pressure automatic phase selecting load equalizer, for testing low pressure
Automatic phase selecting load equalizer, the low pressure automatic phase selecting load equalizer include phase-controlled device and phase line switching switch
Case, phase-controlled device and phase line switching switch-box are electrically connected, which is characterized in that the detection device includes isolating transformer, low
Crimp tentaculum, detection control apparatus and load, wherein
The input terminal of the isolating transformer be connected to low pressure 380V platform become outlet, the isolating transformer it is on high-tension side
Wiring group be the wiring group of triangle and low-pressure side be it is star-like, the output end of the isolating transformer connects three-phase and four-line
System；
Parallel connection accesses in the three-phase line of three-phase four wire system respectively for one end of three contacts of the lv contactor, institute
The other end for stating three contacts is electrically connected with phase line switching switch-box respectively, described phase line switching switch-box one end and three-phase and four-line
The zero curve of system is electrically connected, the load end series connection load of the phase line switching switch；
The detection control apparatus is electrically connected with the lv contactor, phase line switching switch-box and phase-controlled device respectively
It connects.
Preferably, the detection control apparatus includes contactor control module, controller control module, calculates analysis mould
Block, switch-box control module and functional performance detect control module, wherein
Functional performance detection control module respectively with the controller control module, computation analysis module and switch-box
Control module electrical connection, the computation analysis module are electrically connected with the contactor control module；
The contactor control module is electrically connected to the lv contactor, and the controller control module is electrically connected to institute
Phase-controlled device is stated, the switch-box control module is electrically connected to the phase line switching switch-box.
Preferably, the load is load or burden without work, and the load or burden without work is made of capacitor and reactor.
A method of detection low pressure automatic phase selecting load equalizer is applied to low pressure automatic phase selecting load equalizer
Detection device, wherein low pressure automatic phase selecting load equalizer include electrical connection phase-controlled device and phase line switching switch
Case, the detection device include isolating transformer, lv contactor, detection control apparatus and load, which is characterized in that the side
Method includes:
Detection control apparatus receives the phase selection Type Control instruction that testing staff sends, and the phase selection Type Control is referred to
Order is sent to phase-controlled device, so that phase-controlled device phase line according to the Type Control of control instruction switches switch-box
Select automatic mode phase-controlled or manual mode phase-controlled；
If the phase selection Type Control instruction is that manual phase-controlled instructs, the phase-controlled device controls the phase line and cuts
Switch-box locking is changed, and judges whether the phase line switching switch-box acts；
If the phase line switching switch-box movement, determines that the low pressure automatic phase selecting load equalizer is unqualified；
If the phase line switching switch-box is failure to actuate, it is uneven that detection control apparatus receives the three-phase current that testing staff sends
Weighing apparatus degree threshold value and default three-phase current unbalance angle value, by the detection control apparatus according to the default three-phase current unbalance
Angle value controls the corresponding contact closure of lv contactor, so that wherein phase line accesses load all the way in three-phase line；
The phase line switching switch-box carries out degree of unbalancedness adjusting by testing staff according to the current value of access, and will be manual
Three-phase current unbalance angle value after adjusting is sent to detection control apparatus by phase-controlled device；
The detection control apparatus manually adjusted according to after three-phase current unbalance angle value and the three-phase current
Degree of unbalancedness threshold value judges whether the low pressure automatic phase selecting load equalizer is qualified；
If the phase selection Type Control instruction is automatic phase selecting control instruction, the detection control apparatus, which receives, comes from phase line
Switch the three-phase current unbalance angle value of switch-box feedback；
Detection control apparatus controls phase line switching switch-box movement according to the three-phase current unbalance angle value of the feedback, by
Phase line switches switch-box and carries out degree of unbalancedness adjusting to three-phase current automatically, and by the three-phase current unbalance degree after automatic adjustment
Value is sent to detection control apparatus by the phase-controlled device；
Detection control apparatus receives the three-phase current unbalance angle value after the automatic adjustment, and according to the automatic adjustment
Three-phase current unbalance angle value and three-phase current unbalance degree threshold value afterwards, judge the low pressure automatic phase selecting load equalizer
It is whether qualified.
It is preferably, described to judge whether the low pressure automatic phase selecting load equalizer is qualified, comprising:
Whether the three-phase current unbalance angle value after manually adjusting described in judgement is less than the three-phase current unbalance degree threshold
Value；
If it is described manually adjust after three-phase current unbalance angle value or automatic adjustment after three-phase current unbalance angle value
Less than the three-phase current unbalance degree threshold value, it is determined that detected low pressure automatic phase selecting load equalizer is qualified；Otherwise,
It is unqualified.
Preferably, the detection control apparatus includes contactor control module, controller control module, calculates analysis mould
Block, switch-box control module and functional performance detect control module, wherein the detection control apparatus receives testing staff and sends
Default three-phase current unbalance angle value, controlled by the detection control apparatus according to the default three-phase current unbalance angle value
The corresponding contact closure of lv contactor, comprising:
Functional performance detects control module and receives the default three-phase current unbalance angle value that testing staff sends, and will be described
Default three-phase current unbalance angle value is transmitted to computation analysis module；
Computation analysis module generates contactor according to the default three-phase current unbalance angle value and controls signal, and is sent to
The contactor control module；
The contactor control module controls signal according to the contactor and generates contactor control instruction, and is sent to institute
Lv contactor is stated, so that the lv contactor controls corresponding contact closure.
Preferably, the computation analysis module generates contactor control letter according to the default three-phase current unbalance angle value
Number, comprising:
The uneven angle value of three-phase current is the difference and maximum phase current value of maximum phase current value and minimum phase current values
Than；
After the load access phase line, there is fixed current value in corresponding phase line, the computation analysis module is by calculating
Determine maximum phase current value and minimum phase current values, so that it is determined that it is maximum mutually with the minimum phase load to be accessed, it is maximum mutually silent
Think that A phase line, minimum are mutually defaulted as B phase line or C phase line, the contact closure that the lv contactor is concatenated with A, B or C phase line is then
Load accesses in corresponding phase line, and the computation analysis module generates contactor and controls signal.
Compared with prior art, the invention has the benefit that three-phase electricity can be arranged by detection control apparatus in this equipment
Degree of unbalancedness threshold value and default three-phase current unbalance angle value are flowed, and each lv contactor is controlled by detection control apparatus and is moved
Make, adjusts three-phase and access load, three-phase current unbalance angle value is adjusted to default three-phase current unbalance angle value, is then led to
It crosses detection control apparatus and sends phase selection Type Control and instruct and give phase-controlled device, to realize the manual mode of phase line switching switch-box
It adjusts or the selection of automatic mode adjusting, the three-phase imbalance angle value after manually adjusting or automatically adjusting can pass through phase-controlled device
Detection control apparatus is fed back to, is compared with the three-phase current unbalance degree threshold value set, not if it is less than three-phase current
Degree of balance threshold value, then the degree of unbalancedness regulatory function of low pressure automatic phase selecting load equalizer is qualified, otherwise, unqualified, originally sets
It is standby to carry out the detection of performance function before low pressure automatic phase selecting load equalizer comes into operation, avoid some unqualified productions
Product come into operation, to cause unnecessary economic loss, avoid using traditional detection mode, to avoid influencing power supply enterprise
The normal operation of industry is prevented operator from being got an electric shock using traditional approach, guarantees the safety of operator.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of the detection device of low pressure automatic phase selecting load equalizer provided by the present application；
Fig. 2 is a kind of experiment process figure of the detection device of low pressure automatic phase selecting load equalizer provided by the present application.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
Referring to Fig. 1, Fig. 1 is a kind of structure of the detection device of low pressure automatic phase selecting load equalizer provided by the present application
Schematic diagram, this equipment include isolating transformer, lv contactor, detection control apparatus and load, the isolating transformer of equipment
Input terminal is connected to low pressure 380V platform and becomes outlet, and the on high-tension side wiring group of isolating transformer is triangle and low-pressure side
Wiring group be it is star-like, high pressure can be isolated in isolating transformer, to realize protection to each module of equipment, isolating transformer it is defeated
Outlet connects three-phase four wire system.
Respectively in the three-phase line of access three-phase four wire system in parallel, three are touched for one end of three contacts of lv contactor
The other end of head is electrically connected with phase line switching switch-box respectively, and phase line switches the zero curve electricity of switch-box one end and three-phase four wire system
Connection, the load end series load of phase line switching switch；One in three contacts of closed low contactor, then load can be connect
Enter the corresponding phase line concatenated with respective contacts, is easy to implement the adjusting to default three-phase current unbalance degree.
Detection control apparatus includes contactor control module, controller control module, computation analysis module, switch-box control
Module and functional performance detect control module, functional performance detect control module respectively with the controller control module, calculate
Analysis module and the electrical connection of switch-box control module, computation analysis module are electrically connected with contactor control module；Contactor control
Module is electrically connected to lv contactor, and controller control module is electrically connected to phase-controlled device, the electrical connection of switch-box control module
Switch switch-box to phase line.
Load is load or burden without work, and load or burden without work is made of capacitor and reactor, and load or burden without work is not done work.
Referring to fig. 2, Fig. 2 is a kind of system of the detection device of low pressure automatic phase selecting load equalizer provided by the present application
Low pressure automatic phase selecting load equalizer is accessed detection device by experiment process figure.
S101: manual phase-controlled instruction is inputted.
Functional performance detects control module and receives the manual phase-controlled instruction that testing staff sends, and by manual phase selection control
System instruction is sent to phase-controlled device by controller control module, and phase-controlled device controls phase line switching switch-box automatic adjustment
Mode locking.
S102: whether tested device acts.
Judge whether phase line switching switch-box acts, if phase line switching switch-box movement, it is determined that phase-controlled device and phase
The logical instruction that line switches switch-box is abnormal, and the instruction that automatic adjustment mode can not be latched by phase-controlled device passes to phase line switching and opens
Case is closed, then it is unqualified to be tested low pressure automatic phase selecting load equalizer.
S103: setting three-phase current unbalance degree threshold value is 20%.
If phase line switching switch-box is failure to actuate, functional performance detection control apparatus receives the three-phase current that testing staff sends
Degree of unbalancedness threshold value, three-phase current unbalance degree threshold value are set as 20%, and three-phase current unbalance degree threshold value is for determining to be tested
Whether low pressure automatic phase selecting load equalizer is qualified.
S104: inputting default three-phase current unbalance degree is the arbitrary value greater than 20% less than 100%.
Functional performance detects control module and receives the default three-phase imbalance angle value of testing staff, presets three-phase imbalance angle value
It may be set to the arbitrary value less than 100% greater than 20%, by detection control apparatus according to default three-phase current unbalance angle value
The corresponding contact closure of lv contactor is controlled, so that wherein phase line accesses load all the way in three-phase line；
S105: degree of unbalancedness analytical calculation.
Functional performance detects control module and default three-phase current unbalance angle value is transmitted to computation analysis module, calculates and divides
It analyses and generates contactor control signal after module is calculated according to preset three-phase current unbalance angle value；
The uneven angle value of three-phase current is the difference and maximum phase current value of maximum phase current value and minimum phase current values
Than, after load accesses corresponding phase line by some contact of lv contactor, fixed current value is generated in corresponding phase line,
Computation analysis module determines maximum phase current value and minimum phase current values by calculating, so that it is determined that maximum will mutually connect with minimum phase
The load entered, maximum are mutually defaulted as A phase line, and minimum is mutually defaulted as B phase line or C phase line, lv contactor and A, B or C phase line string
The contact closure connect, then load accesses in corresponding phase line, and computation analysis module accordingly generates contactor control signal.
S106: contactor control module receives the contactor that computation analysis module is sent and controls signal.
S107: the control instruction of lv contactor reception contactor control module.
After lv contactor receives control instruction, corresponding contact closure makes wherein phase line access all the way in three-phase line
Load adjusts three-phase current unbalance degree to default three-phase current unbalance angle value.
S108: load adjustment result returns to functional performance and detects control module.
Phase-controlled device switches switch-box by phase line and reads the three-phase current unbalance angle value after adjusting, and passes through control
Device control module feeds back to functional performance detection control module.
S109: testing staff carries out manual mode adjusting.
In process S101, the automatic adjustment mode of tested low pressure automatic phase selecting load equalizer has been latched, and is detected
Testing staff can switch switch-box by manually adjusting phase line, default three-phase current unbalance degree to be adjusted.
S110: input automatic phase selecting control instruction.
Functional performance detects control module and receives the automatic phase selecting control instruction that testing staff sends, and passes through controller control
Automatic phase selecting control instruction is sent to phase-controlled device by molding block, and phase-controlled device controls the manual tune of phase line switching switch-box
The locking of section mode.Phase-controlled device receives the three-phase current unbalance angle value of phase line switching switch-box feedback, and by three-phase current
Uneven angle value feeds back to functional performance by controller control module and detects control module.
S111: tested device movement.
Functional performance detects control module and passes through the control of switch-box control module according to the three-phase current unbalance angle value of feedback
Phase line switching switch-box movement processed, is automatically adjusted three-phase current unbalance degree by phase line switching switch-box.
S112: the result of the action returns to functional performance and detects control module.
Phase-controlled device can read the three-phase current unbalance angle value after manually adjusting and automatically adjusting respectively, and pass through control
Three-phase current unbalance angle value after adjusting is fed back to functional performance detection control module by device control module processed.
S113: judge whether the result of the action is less than three-phase current unbalance degree threshold value 20%.
Judge the three-phase current unbalance angle value after manually adjusting or the three-phase current unbalance angle value after automatic adjustment is
It is no to be less than three-phase current unbalance degree threshold value；
If the three-phase current unbalance angle value after three-phase current unbalance angle value or automatic adjustment after manually adjusting is less than
Three-phase current unbalance degree threshold value, it is determined that detected low pressure automatic phase selecting load equalizer is qualified；Otherwise, unqualified.
It should be noted that, in this document, the terms "include", "comprise" or its any other variant are intended to non-row
His property includes, so that the process, method, article or equipment for including a series of elements not only includes those elements, and
And further include other elements that are not explicitly listed, or further include for this process, method, article or equipment institute it is intrinsic
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including institute
State in the process, method, article or equipment of element that there is also other identical elements.
The above is only a specific embodiment of the invention, is made skilled artisans appreciate that or realizing this hair
It is bright.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (5)
1. a kind of detection device of low pressure automatic phase selecting load equalizer, for testing low pressure automatic phase selecting balancing the load dress
It sets, the low pressure automatic phase selecting load equalizer includes that phase-controlled device and phase line switch switch-box, phase-controlled device and phase
Line switches switch-box electrical connection, which is characterized in that the detection device includes isolating transformer, lv contactor, detection control
Device and load, wherein
The input terminal of the isolating transformer is connected to low pressure 380V platform and becomes outlet, the on high-tension side wiring of the isolating transformer
Group be the wiring group of triangle and low-pressure side be it is star-like, the output end of the isolating transformer connects three-phase four wire system；
Parallel connection accesses in the three-phase line of three-phase four wire system respectively for one end of three contacts of the lv contactor, and described three
The other end of a contact is electrically connected with phase line switching switch-box respectively, described phase line switching switch-box one end and three-phase four wire system
Zero curve electrical connection, the load end of phase line switching switch connects the load；
The detection control apparatus is electrically connected with the lv contactor, phase line switching switch-box and phase-controlled device respectively；
The detection control apparatus includes contactor control module, controller control module, computation analysis module, switch-box control
Module and functional performance detect control module, wherein
The functional performance detection control module is controlled with the controller control module, computation analysis module and switch-box respectively
Module electrical connection, the computation analysis module are electrically connected with the contactor control module；
The contactor control module is electrically connected to the lv contactor, and the controller control module is electrically connected to the choosing
Phase control device, the switch-box control module are electrically connected to the phase line switching switch-box；
The load is load or burden without work, and the load or burden without work is made of capacitor and reactor.
2. a kind of method for detecting low pressure automatic phase selecting load equalizer, applied to low pressure automatic phase selecting load equalizer
Detection device, wherein low pressure automatic phase selecting load equalizer includes the phase-controlled device and phase line switching switch-box of electrical connection,
The detection device includes isolating transformer, lv contactor, detection control apparatus and load, which is characterized in that the method
Include:
Detection control apparatus receives the phase selection Type Control instruction that testing staff sends, and the phase selection Type Control is instructed and is sent out
It send to phase-controlled device, so that phase-controlled device phase line according to the Type Control of control instruction switching switch-box selection
Automatic mode phase-controlled or manual mode phase-controlled；
If the phase selection Type Control instruction is that manual phase-controlled instructs, the phase-controlled device controls the phase line switching and opens
Case locking is closed, and judges whether the phase line switching switch-box acts；
If the phase line switching switch-box movement, determines that the low pressure automatic phase selecting load equalizer is unqualified；
If the phase line switching switch-box is failure to actuate, detection control apparatus receives the three-phase current unbalance degree that testing staff sends
Threshold value and default three-phase current unbalance angle value, by the detection control apparatus according to the default three-phase current unbalance angle value
The corresponding contact closure of the lv contactor is controlled, so that wherein phase line accesses load all the way in three-phase line；
The phase line switching switch-box carries out degree of unbalancedness adjusting by testing staff according to the current value of access, and will manually adjust
Three-phase current unbalance angle value afterwards is sent to detection control apparatus by phase-controlled device；
The detection control apparatus manually adjusted according to after three-phase current unbalance angle value and the three-phase current it is uneven
Weighing apparatus degree threshold value judges whether the low pressure automatic phase selecting load equalizer is qualified；
If the phase selection Type Control instruction is automatic phase selecting control instruction, the detection control apparatus is received to be switched from phase line
The three-phase current unbalance angle value of switch-box feedback；
Detection control apparatus controls phase line switching switch-box movement according to the three-phase current unbalance angle value of the feedback, by phase line
Switch switch-box and degree of unbalancedness adjusting is carried out to three-phase current automatically, and the three-phase current unbalance angle value after automatic adjustment is led to
It crosses the phase-controlled device and is sent to detection control apparatus；
Detection control apparatus receives the three-phase current unbalance angle value after the automatic adjustment, and according to the automatic adjustment after
Whether three-phase current unbalance angle value and three-phase current unbalance degree threshold value, judge the low pressure automatic phase selecting load equalizer
It is qualified.
3. according to the method described in claim 2, it is characterized in that, the judgement low pressure automatic phase selecting load equalizer
It is whether qualified, comprising:
Three-phase current unbalance angle value after manually adjusting described in judgement or the three-phase current unbalance angle value after automatic adjustment are
It is no to be less than the three-phase current unbalance degree threshold value；
If it is described manually adjust after three-phase current unbalance angle value or automatic adjustment after three-phase current unbalance angle value be less than
The three-phase current unbalance degree threshold value, it is determined that detected low pressure automatic phase selecting load equalizer is qualified；Otherwise, do not conform to
Lattice.
4. according to the method described in claim 2, it is characterized in that, the detection control apparatus include contactor control module,
Controller control module, computation analysis module, switch-box control module and functional performance detect control module, wherein the inspection
It surveys control device and receives the default three-phase current unbalance angle value that testing staff sends, as the detection control apparatus according to
Default three-phase current unbalance angle value controls the corresponding contact closure of lv contactor, comprising:
Functional performance detects control module and receives the default three-phase current unbalance angle value that testing staff sends, and will be described default
Three-phase current unbalance angle value is transmitted to computation analysis module；
Computation analysis module generates contactor according to the default three-phase current unbalance angle value and controls signal, and is sent to described
Contactor control module；
The contactor control module controls signal according to the contactor and generates contactor control instruction, and is sent to described low
Tentaculum is crimped, so that the lv contactor controls corresponding contact closure.
5. according to the method described in claim 4, it is characterized in that, the computation analysis module is according to the default three-phase current
Uneven angle value generates contactor and controls signal, comprising:
The uneven angle value of three-phase current is the difference of maximum phase current value and minimum phase current values and the ratio of maximum phase current value；
After the load access phase line, there is fixed current value in corresponding phase line, the computation analysis module is determined by calculating
Maximum phase current value and minimum phase current values, so that it is determined that maximum phase and the minimum phase load to be accessed；Wherein, setting is maximum
It is mutually defaulted as A phase line, minimum is mutually defaulted as B phase line or C phase line, and the contact that the lv contactor is concatenated with A, B or C phase line closes
It closes then load to access in corresponding phase line, the computation analysis module generates contactor and controls signal.
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