CN207234405U - A kind of MEC electric imitatings frock - Google Patents
A kind of MEC electric imitatings frock Download PDFInfo
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- CN207234405U CN207234405U CN201720937101.0U CN201720937101U CN207234405U CN 207234405 U CN207234405 U CN 207234405U CN 201720937101 U CN201720937101 U CN 201720937101U CN 207234405 U CN207234405 U CN 207234405U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
A kind of MEC electric imitatings frock of the utility model, it is made of power cabinet room, reactance cabinet room and resistor box room, including output feed circuit, idle circuit system and active system circuit, feed circuit is exported to be installed in power cabinet room, idle circuit system is installed in reactance cabinet room, and active system circuit is installed in resistor box room；Output feed circuit is responsible for providing power supply and control protection; active system circuit is used for putting into or cutting off the pure active power of stainless steel resistor offer and puts into or cut off inverse parallel controllable silicon generation system harmonic wave; idle circuit system is used for putting into or cutting off current transformer generation reactive power; to simulate active and reactive, harmonic wave situation occurred in power distribution circuit, the MEC electric energy optimizings equipment of subsequent processing is put into detect the optimization regulation effect of power quality；The utility model is designed reasonably, can will common are work(, idle, harmonic problem simulated restoration in distrbution network, reliable technical support is provided to optimize the detection of equipment and optimization.
Description
Technical field
Power network monitoring technical field is the utility model is related to, is specifically related to a kind of MEC electric imitatings frock.
Background technology
In the town and country power distribution network in China, there are following several main problems：
1st, power factor is low
With the improvement of people ' s living standards with the popularization of household electrical appliance, largely set using rotations such as motor, compressors
Standby and power electronic equipment obtains extensive use, this kind equipment reactive requirement is big, and produces a large amount of higher harmonic currents, causes whole
The power factor of a low voltage electric network is very low, about between 0.65-0.70, causes line loss higher, for industrial user, by because
Power factor is low and produces extra idle fine.
2nd, rate of qualified voltage is low
Very big voltage drop can be produced on the line with the increase of radius of electricity supply, usual rural power grids terminal temperature difference voltage is low,
Equipment can not normal operation；And urban distribution network due to a large amount of uses of cable, and occurs that voltage is inclined when night load is lighter
High problem；The period load peak valley change of distribution transforming at the same time is notable to voltage influence, because load variations cause day voltage difference to surpass
Cross 50V, and the underproof major reason of voltage.
The harm of brownout ---
Equipment can not work normally, and burn motor, increase line loss, reduce conveying capacity etc.；
The harm of overtension ---
Increase distribution loss, produce harmonic wave, influence electrical equipment service life etc.；
3rd, three-phase imbalance is serious
In the town and country power distribution network in China, the main distribution system for using three-phase four-wire system, since low voltage electric network is three-phase
The supply network of productive power and single-phase load mixing electricity consumption, and the asynchronism of single-phase electricity consumption, it is provisional the problems such as, cause
The three-phase imbalance problem of low voltage electric network is very prominent always, it is difficult to is solved by way of fixed allotment load.
The presence of three-phase load unbalance and neutral current, is significantly increased circuit and distribution loss；
The presence of zero-sequence current, raises fever, the winding insulation of distribution transforming is because of overheat by the steel member local temperature for making distribution transforming
And accelerate aging, cause equipment life to reduce, transformer heating burnout is caused when serious；
Due to three-phase imbalance, transformer output is influenced, single-phase heavy overload occur, protection act, can not continue to power,
Dilatation is needed to solve；
Central point variation, causes heavily loaded phase voltage relatively low, underloading phase voltage is higher, jeopardizes equipment safety；Make at the same time
Into user side imbalance of three-phase voltage, so as to cause motor efficiency to reduce.The temperature rise of motor and reactive loss, also will be with three
The degree of unbalancedness of phase voltage and increase, motor running economy and security are greatly reduced.
4th, harmonic problem
Harmonic current produces additional high vortex iron loss, overheats transformer, reduce the defeated of transformer in transformer
Go out capacity, increase the noise of transformer, seriously affect the service life of transformer；
The Kelvin effect of harmonic current makes conducting wire representative section diminish, and increases the loss of circuit；
Harmonic voltage, electric current produce interference to neighbouring communication apparatus normal operation；
Temporary overvoltage and the transient overvoltage destruction that harmonic wave produces are apparatus insulated, trigger three-phase shortcircuit, burn transformer；
Harmonic voltage, electric current, which can cause, locally produces parallel resonance and series resonance in public electric wire net, cause major accident.
Existing China's distribution network var compensation device is most to use shunt capacitance reactor switching mode, and routine is idle
Compensating equipment, there are the following problems：
Terminal power grid operating mode is complicated, and resonance easily occurs for compensation device, and high failure rate, is particularly applicable in percent harmonic distortion and compares
High website is more prominent；Capacitor enclosed construction, weak heat-dissipating, short life, capacity attenuation speed is fast, operation expense
It is high；Reactive power is fixed or step compensation, and easy overcompensation or undercompensation, the degree of automation is low, and response speed is slow, it is difficult to adapts to use
What electric equipment was idle is widely varied.
The preferred plan to solve the above problems is the principle deferred to local compensation, administered on the spot, on 0.4kV power distribution networks,
Directly install reactive-load compensation and power quality controlling equipment additional.
But reactive-load compensation and power quality controlling equipment are before power distribution network use is put into, it is necessary to by a series of
Detection, must simulate electric energy existing a series of problems in actual use in advance, into the hand-manipulating of needle while being detected
Detection and optimization to property.
It is how that the process performance for simulating electric energy and electric energy optimizing equipment optimization is clear, targetedly it is detected and optimizes
Be present electric energy optimizing equipment production and detection process in critical process.
The content of the invention
The purpose of this utility model is to provide a kind of MEC electric imitatings frock, and simulation electric energy is normal in actual use
Active and reactive, the harmonic problem seen, for carrying out targetedly detecting and optimizing to electric energy optimizing equipment.
What the utility model was achieved through the following technical solutions：
A kind of MEC electric imitatings frock, is made of power cabinet room, reactance cabinet room and resistor box room, including output feed electricity
Road, idle circuit system and active system circuit, the output feed circuit include Switching Power Supply and main switch, the switch electricity
Source is 220 AC three-phase, four line power supply, and the Switching Power Supply includes A phase, B phase, C phase and zero curve N, the input terminal of the main switch
Pass through connection with the Switching Power Supply；The idle circuit system include the first current transformer, the second current transformer,
3rd current transformer, first branch switch, the second branch switch, the 3rd branch switch, it is first current transformer, described
Second current transformer, the input terminal of the 3rd current transformer pass through the main switch and the A phase, B phase, C phase respectively
Connection, first branch switch, the second branch switch, the input terminal of the 3rd branch switch are respectively with described first
Current transformer, second current transformer, the output terminal of the 3rd current transformer pass through connection；It is described active
Circuit system is including the first inverse parallel is silicon-controlled, the second inverse parallel is silicon-controlled, the 3rd inverse parallel is silicon-controlled, the first electric resistance of stainless
Device, the second stainless steel resistor, the 3rd stainless steel resistor, first inverse parallel is silicon-controlled, second inverse parallel is controllable
The silicon-controlled input terminal of silicon, the 3rd inverse parallel respectively with first branch switch, the second branch switch, described the
The output terminal of three branch switch is first stainless steel resistor, second stainless steel resistor, described by connection
The input terminal of 3rd stainless steel resistor is silicon-controlled with first inverse parallel respectively, second inverse parallel is silicon-controlled, described
The silicon-controlled output terminal of 3rd inverse parallel passes through connection, first stainless steel resistor, second electric resistance of stainless
Device, the output terminal of the 3rd stainless steel resistor pass through connection with the zero curve N respectively；
The output feed circuit is installed in the power cabinet room, and the idle circuit system is installed on the reactance cabinet
Interior, the active system circuit are installed in the resistor box room；The power cabinet room includes master station, the master station with
Control connection is realized in the reactance cabinet room, the resistor box room；
A kind of above-mentioned MEC electric imitatings frock, wherein, the power cabinet room is GDD low-voltage distribution cabinets；
A kind of above-mentioned MEC electric imitatings frock, wherein, first current transformer, the second current transformer, the 3rd electricity
The both sides of current transformer are parallel with ammeter respectively, and the ammeter is one kind of pointer ammeter or digital display ammeter；
A kind of above-mentioned MEC electric imitatings frock, wherein, first inverse parallel is silicon-controlled, second inverse parallel is controllable
Silicon, the 3rd inverse parallel is silicon-controlled is respectively arranged with wind-cooling heat dissipating piece；
A kind of above-mentioned MEC electric imitatings frock, wherein, the power cabinet room, the resistor box room, the reactance cabinet room point
Arrester is not installed；
A kind of above-mentioned MEC electric imitatings frock, wherein, the main switch, first branch switch, the second branch
Switch, the 3rd branch switch are breaker of plastic casing.
In use, output feed circuit is responsible for providing power supply and control protection；Active system circuit one be for
Input or excision stainless steel resistor, provide pure active power, second, utilizing inverse parallel controllable silicon using stainless steel resistor
Input or excision generation system harmonic wave, idle circuit system be used for put into or cut off current transformer produce reactive power；Instead
Should be to then showing as on three cabinet rooms, power cabinet room controls resistor box room and reactance cabinet room by master station, passes through opening for master station
Active and reactive, harmonic wave the switching of the control such as pass or knob, simulates active and reactive, harmonic wave generation in the power distribution circuit of reality
Situation, then puts into the MEC electric energy optimizings equipment of subsequent processing to detect the optimization regulation effect of power quality.
The protrusion beneficial effect of the utility model：
A kind of MEC electric imitatings frock of the utility model, is made of power cabinet room, reactance cabinet room and resistor box room, bag
Output feed circuit, idle circuit system and active system circuit are included, wherein output feed circuit is installed in power cabinet room, nothing
Work(circuit system is installed in reactance cabinet room, and active system circuit is installed in resistor box room；Output feed circuit is responsible for offer
Power supply and control protection, active system circuit one is for putting into or cutting off stainless steel resistor, carried using stainless steel resistor
For pure active power, second, being used for using the input or excision generation system harmonic wave, idle circuit system of inverse parallel controllable silicon
Input or excision current transformer produce reactive power, to simulate active and reactive, harmonic wave situation occurred in power distribution circuit, so
The MEC electric energy optimizings equipment of subsequent processing is put into afterwards to detect the optimization regulation effect of power quality；The electricity of the utility model
Road design is reasonable, work(can will be common are in distrbution network, idle, harmonic problem simulated restoration as far as possible comes out, to throw
In the optimization improvement for entering subsequent processing, reliable technical support is provided to optimize the detection of equipment and optimization.
Brief description of the drawings
Fig. 1 the utility model conceptual schemas.
The schematic circuit schematic diagram of Fig. 2 the utility model.
Embodiment
Specific embodiment of the present utility model is described in further detail below in conjunction with attached drawing, so as to this practicality
New design, the technical problem solved, the technical characteristic for forming technical solution and the technique effect that brings have further
Understanding, it is necessary to explanation, the explanation to these embodiments is schematical, is not formed to the specific of the utility model
Limit.
In case study on implementation below, the unit type difference of selection is as follows：The model AC220V/ of Switching Power Supply
DC24V, the model NM1-400S/3200 of main switch, 250/5 30II of model BH0.66 of current transformer, ammeter
Model 42L6 250A, way switch model NM1-250S/3200, the silicon-controlled model KP200A of inverse parallel
1000V（1600v）, the model ZX28-1.1 of stainless steel resistor.
A kind of MEC electric imitatings frock of the utility model, by 30 groups of power cabinet room 10, reactance cabinet room 20 and resistor box room
Into, including output feed circuit 1, idle circuit system 2 and active system circuit 3, it is electric that the output feed circuit 1 includes switch
Source AC and main switch QF, the Switching Power Supply AC are 220 AC three-phase, four line power supply, the Switching Power Supply AC include A phases, B phases,
C phases and zero curve N, the input terminal of the main switch QF pass through connection with the Switching Power Supply AC；The idle circuit system 2
Including the first current transformer TA1, the second current transformer TA2, the 3rd current transformer TA3, first branch switch QS1, the
Two branch switch QS2, the 3rd branch switch QS3, the first current transformer TA1, the second current transformer TA2, institute
The input terminal for stating the 3rd current transformer TA3 is connected by the main switch QF with the A phase, B phase, C phase respectively, and described first
Branch switch QS1, the second branch switch QS2, the 3rd branch switch QS3 input terminal respectively with first electric current
Mutual inductor TA1, the second current transformer TA2, the output terminal of the 3rd current transformer TA3 pass through connection；Institute
It is silicon-controlled including the silicon-controlled KP1 of the first inverse parallel, the silicon-controlled KP2 of the second inverse parallel, the 3rd inverse parallel to state active system circuit 3
KP3, the first stainless steel resistor R1, the second stainless steel resistor R2, the 3rd stainless steel resistor R3, first inverse parallel can
The input terminal of silicon KP1, the silicon-controlled KP2 of second inverse parallel, the silicon-controlled KP3 of the 3rd inverse parallel are controlled respectively with described first
Branch switch QS1, the second branch switch QS2, the output terminal of the 3rd branch switch QS3 are described by connection
First stainless steel resistor R1, the second stainless steel resistor R2, the input terminal difference of the 3rd stainless steel resistor R3
KP1 silicon-controlled with first inverse parallel, the silicon-controlled KP2 of second inverse parallel, the silicon-controlled KP3 of the 3rd inverse parallel it is defeated
Outlet passes through connection, the first stainless steel resistor R1, the second stainless steel resistor R2, the 3rd stainless steel
The output terminal of resistor R3 passes through connection with the zero curve N respectively；
The output feed circuit 1 is installed in the power cabinet room 10, and the idle circuit system 2 is installed on the electricity
In anti-cabinet room 20, the active system circuit 3 is installed in the resistor box room 30；The power cabinet room 10 includes master station
101, the master station 101 realizes control connection with the reactance cabinet room 20, the resistor box room 30；
A kind of above-mentioned MEC electric imitatings frock, wherein, the power cabinet room 10 is GDD low-voltage distribution cabinets；
A kind of above-mentioned MEC electric imitatings frock, wherein, the first current transformer TA1, the second current transformer TA2,
The both sides of 3rd current transformer TA3 are parallel with ammeter A respectively, and the ammeter A is pointer ammeter；
A kind of above-mentioned MEC electric imitatings frock, wherein, the silicon-controlled KP1 of first inverse parallel, second inverse parallel can
Control silicon KP2, the silicon-controlled KP3 of the 3rd inverse parallel are respectively arranged with wind-cooling heat dissipating piece；
A kind of above-mentioned MEC electric imitatings frock, wherein, the power cabinet room 10, the resistor box room 20, the reactance cabinet
Room 30 is separately installed with arrester 102；
A kind of above-mentioned MEC electric imitatings frock, wherein, the main switch QF, first branch switch QS1, described the
Two branch switch QS2, the 3rd branch switch QS3 are breaker of plastic casing.
In use, output feed circuit is responsible for providing power supply and control protection；Active system circuit one be for
Input or excision stainless steel resistor, provide pure active power, second, utilizing inverse parallel controllable silicon using stainless steel resistor
Input or excision generation system harmonic wave, idle circuit system be used for put into or cut off current transformer produce reactive power；Instead
Should be to then showing as on three cabinet rooms, power cabinet room controls resistor box room and reactance cabinet room by master station, passes through opening for master station
Active and reactive, harmonic wave the switching of the control such as pass or knob, simulates active and reactive, harmonic wave generation in the power distribution circuit of reality
Situation, then puts into the MEC electric energy optimizings equipment of subsequent processing to detect the optimization regulation effect of power quality.
The protrusion beneficial effect of the utility model：
A kind of MEC electric imitatings frock of the utility model, is made of power cabinet room, reactance cabinet room and resistor box room, bag
Output feed circuit, idle circuit system and active system circuit are included, wherein output feed circuit is installed in power cabinet room, nothing
Work(circuit system is installed in reactance cabinet room, and active system circuit is installed in resistor box room；Output feed circuit is responsible for offer
Power supply and control protection, active system circuit one is for putting into or cutting off stainless steel resistor, carried using stainless steel resistor
For pure active power, second, being used for using the input or excision generation system harmonic wave, idle circuit system of inverse parallel controllable silicon
Input or excision current transformer produce reactive power, to simulate active and reactive, harmonic wave situation occurred in power distribution circuit, so
The MEC electric energy optimizings equipment of subsequent processing is put into afterwards to detect the optimization regulation effect of power quality；The electricity of the utility model
Road design is reasonable, work(can will be common are in distrbution network, idle, harmonic problem simulated restoration as far as possible comes out, to throw
In the optimization improvement for entering subsequent processing, reliable technical support is provided to optimize the detection of equipment and optimization.
Above description is merely a prefered embodiment of the utility model, is not intended to limit the present invention, for
For those skilled in the art, various modifications and changes may be made to the present invention.It is all in the spiritual and former of the utility model
Within then, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (6)
- A kind of 1. MEC electric imitatings frock, it is characterised in that it is made of power cabinet room, reactance cabinet room and resistor box room, including it is defeated Go out feed circuit, idle circuit system and active system circuit, the output feed circuit includes Switching Power Supply and main switch, institute It is 220 AC three-phase, four line power supply to state Switching Power Supply, and the Switching Power Supply includes A phase, B phase, C phase and zero curve N, the main switch Input terminal and the Switching Power Supply pass through connection；The idle circuit system includes the first current transformer, the second electricity Current transformer, the 3rd current transformer, first branch switch, the second branch switch, the 3rd branch switch, first electric current are mutual Sensor, second current transformer, the input terminal of the 3rd current transformer pass through the main switch and the A respectively Phase, B phases, C are connected, the first branch switch, the second branch switch, the input terminal difference of the 3rd branch switch Connected with the output terminal of first current transformer, second current transformer, the 3rd current transformer by circuit Connect；The active system circuit include the first inverse parallel is silicon-controlled, the second inverse parallel is silicon-controlled, the 3rd inverse parallel is silicon-controlled, the One stainless steel resistor, the second stainless steel resistor, the 3rd stainless steel resistor, first inverse parallel is silicon-controlled, described The input terminal that two inverse parallels are silicon-controlled, the 3rd inverse parallel is silicon-controlled switchs with the first branch, is second described respectively Way switch, the output terminal of the 3rd branch switch are first stainless steel resistor, described second stainless by connection Steel resistor, the input terminal of the 3rd stainless steel resistor be silicon-controlled with first inverse parallel respectively, described second it is anti-simultaneously Join the silicon-controlled output terminal of silicon-controlled, described 3rd inverse parallel and pass through connection, first stainless steel resistor, described Two stainless steel resistors, the output terminal of the 3rd stainless steel resistor pass through connection with the zero curve N respectively；The output feed circuit is installed in the power cabinet room, and the idle circuit system is installed on the reactance cabinet room Interior, the active system circuit is installed in the resistor box room；The power cabinet room includes master station, the master station and institute State reactance cabinet room, control connection is realized in the resistor box room.
- 2. a kind of MEC electric imitatings frock according to claim 1, it is characterised in that the power cabinet room is GDD low pressure Power distribution cabinet.
- 3. a kind of MEC electric imitatings frock according to claim 1, it is characterised in that first current transformer, Two current transformers, the both sides of the 3rd current transformer are parallel with ammeter respectively, and the ammeter is pointer ammeter or number One kind of aobvious ammeter.
- A kind of 4. MEC electric imitatings frock according to claim 1, it is characterised in that first inverse parallel is silicon-controlled, Second inverse parallel is silicon-controlled, the 3rd inverse parallel is silicon-controlled is respectively arranged with wind-cooling heat dissipating piece.
- 5. a kind of MEC electric imitatings frock according to claim 1, it is characterised in that the power cabinet room, the resistance Cabinet room, the reactance cabinet room are separately installed with arrester.
- 6. a kind of MEC electric imitatings frock according to claim 1, it is characterised in that the main switch, first described Way switch, the second branch switch, the 3rd branch switch are breaker of plastic casing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720937101.0U CN207234405U (en) | 2017-07-31 | 2017-07-31 | A kind of MEC electric imitatings frock |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720937101.0U CN207234405U (en) | 2017-07-31 | 2017-07-31 | A kind of MEC electric imitatings frock |
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| CN207234405U true CN207234405U (en) | 2018-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240920A (en) * | 2017-07-31 | 2017-10-10 | 江苏振光电力设备制造有限公司 | A kind of MEC electric imitatings frock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240920A (en) * | 2017-07-31 | 2017-10-10 | 江苏振光电力设备制造有限公司 | A kind of MEC electric imitatings frock |
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