CN207965070U - A kind of detection device of three-phase current unbalance regulating device - Google Patents
A kind of detection device of three-phase current unbalance regulating device Download PDFInfo
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- CN207965070U CN207965070U CN201820053373.9U CN201820053373U CN207965070U CN 207965070 U CN207965070 U CN 207965070U CN 201820053373 U CN201820053373 U CN 201820053373U CN 207965070 U CN207965070 U CN 207965070U
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Abstract
The utility model provides a kind of detection device of three-phase current unbalance regulating device, detection device includes inlet wire, the first air-break, current transformer, busbar, individual load module and adjusts loading module, first air-break is arranged on inlet wire, it connects busbar by current transformer, and individual load module and adjusting loading module are connect with busbar respectively.The utility model is using individual load module and adjusts two kinds of load topologys of loading module, it is non-adjustable to adjust loading module, in order to quickly examine, only pass through the i.e. adjustable individual load module of button, multiple phase-change switches in three-phase current unbalance regulating device can be detected simultaneously, detection efficiency is high.
Description
Technical field
The utility model is related to distribution network technology fields, and in particular to a kind of detection of three-phase current unbalance regulating device
Device.
Background technology
In recent years, requirement of the network system to power distribution network improves year by year, the 380V voltage class especially in power distribution network
Power distribution station, since the distribution system user side is nearly all single-phase load, and electricity consumption has asynchronism, three-phase easily occurs
Unbalanced power quality problem, degree of unbalancedness severely exceed.Three-phase imbalance problem be power distribution station can be steady in a long-term
The essential condition of operation and the precondition of transformer stable operation.And three-phase imbalance problem is from reason
The current imbalance of distribution net platform region transformer.Current three-phase current unbalance regulating device includes following three types：1)
Capacitive coupling type is put in the secondary side of taiwan area transformer, is put by the alternate capacitance between phase zero, to reach the original of taiwan area transformer
The electric current on side is equilibrium state；2) SVG types are put in the secondary side of taiwan area transformer, by the active adjusting of three-phase, in taiwan area transformer
Primary side, electric current is equilibrium state；3) phase-change switch type, with the pattern of thyristor paralleling switch, which is positioned over allocated radio
The end loads side in area, it is separate by the power supply for adjusting end loads, to balance distribution station transformer.
Three-phase current unbalance regulating device is applied widely in power distribution network " low-voltage " improvement field at present.In state
Interior, the manufacturer of three-phase current unbalance regulating device is also gradually increasing, and product yield is increasing, three-phase current unbalance tune
The quick exfactory inspection of regulating device is particularly important, especially the three-phase imbalance regulating device of phase-change switch type, a suit
It sets itself and just contains nine phase-change switches according to basic configuration, if mass production, no small work is brought to factory testing
It measures, slows down working efficiency.The detection device of three-phase current unbalance regulating device is opened for single commutation in the prior art
Close and single controller detection, including to phase-change switch its whether can correctly act, sampled data situation, communication performance, control
Sampled data, the communication performance of device processed are verified, lack to multiple phase-change switches in three-phase current unbalance regulating device into
The detection device of row batch detection, detection efficiency are low.
Utility model content
In order to overcome the shortcomings of that the above-mentioned detection efficiency of detection device in the prior art is low, the utility model provides one kind
The detection device of three-phase current unbalance regulating device, detection device include inlet wire, the first air-break, current transformer,
Busbar, individual load module and adjust loading module, can to multiple phase-change switches in three-phase current unbalance regulating device into
Row batch detection, detection efficiency are high.
To achieve the goals above, the utility model takes following scheme：
The utility model provides a kind of detection device of three-phase current unbalance regulating device, the three-phase current unbalance
Regulating device includes controller and M phase-change switch；The detection device includes inlet wire, the first air-break, Current Mutual Inductance
Device, busbar, individual load module and adjusting loading module；
First air-break is arranged on inlet wire, the electricity of three-phase voltage and zero curve the connection controller of outlet side
It is pressed into line, and it connects busbar by current transformer, the individual load module and adjusting loading module connect with busbar respectively
It connects.
The primary side of the current transformer connects the first air-break, secondary side connect the electric current of controller into
Line.
The individual load module includes the second air-break, N number of relay unit and N number of load group；
The input terminal of second air-break connects busbar, and the input terminal of N number of relay unit is all connected with the
The output end of two air-breaks, output end are connected respectively the input terminal of N number of load group, N number of load group it is defeated
Outlet connects zero curve.
The relay unit includes three relays, and three relays are respectively connected to different separate.
Individual load mould each relay unit output end in the block is correspondingly connected with a load group, each load group
Include the load of different numbers, passes through conversion terminal parallel connection between each load in each load group
First load group that individual load mould first relay unit output end in the block is correspondingly connected with include
One load, second load group that second relay unit output end is correspondingly connected with includes two loads in parallel, with this
Analogize, the n-th load group that n-th relay unit output end is correspondingly connected with includes the load of N number of parallel connection.
The adjusting loading module includes M air relay and M load cell；
The input terminal of the M air relay connects busbar, and output end passes through the first test of conversion terminal connection respectively
One end of line, the input terminal of the M phase-change switch connect the other end of the first p-wire, output end by different crocodile clips
One end of the second p-wire is connected by different crocodile clips, the other end of second p-wire connects M by conversion terminal
The output end of the input terminal of load cell, the M load cell connects zero curve.
The output end of the phase-change switch is correspondingly connected with a load group, and each load group includes the load of different numbers,
Pass through conversion terminal parallel connection in each load group between each load.
First load cell that the output end of first phase-change switch in the M phase-change switch is correspondingly connected with include
One load, second load cell that the output end of second phase-change switch is correspondingly connected with includes two loads, and third is changed
Mutually the third load cell that is correspondingly connected with of output end of switch includes three loads, and so on, m-th phase-change switch it is defeated
The m-th load cell that outlet is correspondingly connected with includes M load.
Compared with the immediate prior art, technical solution provided by the utility model has the advantages that：
The utility model provides detection device and includes inlet wire, the first air-break, current transformer, busbar, independently bears
Lotus module and adjusting loading module, the first air-break are arranged on inlet wire, and the three-phase voltage and zero curve of outlet side connect
The voltage inlet wire of controller, and its by current transformer connect busbar, individual load module and adjusting loading module respectively with
Busbar connects, and can be detected simultaneously to multiple phase-change switches in three-phase current unbalance regulating device, improves detection effect
Rate；
Detection device provided by the utility model is using individual load module and adjusts two kinds of load topologys of loading module, adjusts
It is non-adjustable to save loading module, in order to quickly examine, only by the i.e. adjustable individual load module of button, and then reaches inspection three-phase
The purpose of current imbalance regulating device；
Detection device provided by the utility model uses flexible configuration of load mode, individual load module and adjusting load
Mould different load in the block is attached by the shorting stub of conversion terminal, and can be with quick-speed plug, in phase-change switch side
By way of crocodile clip, the input/output terminal of phase-change switch can be quickly connected, saves the time that screw is unloaded in the turn of the screw；
Description of the drawings
Fig. 1 is the structure of the detecting device figure of three-phase current unbalance regulating device in the utility model embodiment 1；
Fig. 2 is phase-change switch structure chart in the utility model embodiment 1；
Fig. 3 is the structure of the detecting device figure of three-phase current unbalance regulating device in the utility model embodiment 2.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
The utility model embodiment 1 provides a kind of detection device of three-phase current unbalance regulating device, three-phase therein
Current imbalance regulating device includes controller and the M phase-change switch controlled by controller (KD1 to KDM in Fig. 1)；This reality
With the structure of the detecting device figure of the three-phase current unbalance regulating device of new embodiment offer as shown in Figure 1, in Fig. 1, KK1 tables
Show that the first air-break, KK2 indicate that individual load mould the second air-break in the block, K1A, K1B and K1C are respectively independent
The three-phase electrical relay of first relay unit in loading module, K2A, K2B and K2C are respectively second in individual load module
The three-phase electrical relay of relay unit, and so on；K1 to KM is respectively the M air-break adjusted in loading module, R tables
Show that load, CT1 indicate the current transformer being arranged between the first air-break and busbar.KD1 to KDM is respectively M and changes
It mutually switchs, as shown in Fig. 2, in Fig. 2, VTa, VTb, VTc are that (two thyristors are instead simultaneously for thyristor groups for the concrete structure of phase-change switch
Connection), KMA, KMB, KMC are switch, and CT2 is current transformer.
The detection device for the three-phase current unbalance regulating device that the utility model embodiment 1 provides includes inlet wire, first
Air-break, current transformer, busbar, individual load module and adjusting loading module；First air-break therein is set
It sets on inlet wire, the voltage inlet wire of three-phase voltage and zero curve the connection controller of the first air-break outlet side, and first is empty
Gas breaker connects busbar by current transformer, and individual load module therein and adjusting loading module connect with busbar respectively
It connects.
The primary side of above-mentioned current transformer connects the first air-break, and the secondary side of current transformer connects controller
Electric current inlet wire.
Above-mentioned individual load module includes the second air-break, N number of relay unit and N number of load group；
The input terminal of second air-break connects busbar, and the input terminal of N number of relay unit is all connected with the second air and breaks
The output end of road device, output end are connected respectively the input terminal of N number of load group, and the output end of N number of load group connects zero curve.
Each relay unit includes three relays, and three relays are respectively connected to different separate.As shown in Figure 1,
Three relays in first relay unit are respectively K1A, K1B, K1C, three relays in second relay unit
Device is respectively K2A, K2B, K2C, and so on, three relays in n-th relay unit are respectively KNA, KNB, KNC.
First load for adjusting in loading module in each load cell is replaced with lighting, more intuitively see load be powered and
Whether the lamp in commutation process is dimmed, such as the D1 to DM in Fig. 1 (D1 to DM is electric light).
Individual load mould each relay unit output end in the block is correspondingly connected with a load group, and each load group includes
It is in parallel to pass through conversion terminal in each load group for the load of different numbers between each load.Specifically, above-mentioned individual load module
In first load group being correspondingly connected with of first relay unit output end include a load, second relay unit
Second load group that output end is correspondingly connected with includes two loads in parallel, and so on, n-th relay unit output end
The n-th load group being correspondingly connected with includes the load of N number of parallel connection.
Above-mentioned adjusting loading module includes M air relay and M load cell；The input terminal of M air relay
Busbar is connected, output end connects one end of the first p-wire by conversion terminal respectively, and the input terminal of M phase-change switch passes through not
The other end of the first p-wire is connected with crocodile clip, the output end of M phase-change switch passes through the second test of different crocodile clips connection
One end of line, the other end of the second p-wire connect the input terminal of M load cell by conversion terminal, M load cell
Output end connects zero curve.
The output end of above-mentioned phase-change switch is correspondingly connected with a load group, and each load group includes the load of different numbers,
Pass through conversion terminal parallel connection in each load group between each load.Specifically, first phase-change switch in M phase-change switch is defeated
First load cell that outlet is correspondingly connected with includes a load, the output end of second phase-change switch be correspondingly connected with second
A load cell includes two loads, and the third load cell that the output end of third phase-change switch is correspondingly connected with includes three
Load, and so on, the m-th load cell that the output end of m-th phase-change switch is correspondingly connected with includes M load.
Embodiment 2
The structure of the detecting device figure such as Fig. 3 institutes for the three-phase current unbalance regulating device that the utility model embodiment 2 provides
Show there are 9 phase-change switches (KD1 to KD9 in Fig. 3) in three-phase current unbalance regulating device, 5 are equipped in individual load module
A load group and 5 relay units are adjusted negative equipped with 9 air-breaks (K1 to the K9 in Fig. 3) and 9 in loading module
Lotus unit；KK1 indicate the first air-break, KK2 indicate individual load mould the second air-break in the block, KM1A, K1B and
K1C is respectively the three-phase electrical relay of first relay unit in individual load module, and K2A, K2B and K2C are respectively independent negative
The three-phase electrical relay of second relay unit in lotus module, and so on, K5A, K5B and K5C are respectively individual load module
In the 5th relay unit three-phase electrical relay；R indicates load, it is contemplated that energy-saving, power can select very little, such as
The power of 5.1k/25W, actual use are 10W, then the power of integral load is 600W, by software to the magnitude of current of detection into
Row amplification factor achievees the purpose that verify three-phase imbalance regulating device.It will adjust in loading module in each load cell
First load is replaced with lighting, more intuitively sees whether the lamp in load energization and commutation process is dimmed, in Fig. 3
D1 to D9 (D1 to D9 is electric light).CT1 indicates the current transformer being arranged between the first air-break and busbar.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than limits it
System, those of ordinary skill in the art can still carry out specific embodiment of the present utility model with reference to above-described embodiment
Modification either equivalent replacement these without departing from any modification of the spirit and scope of the utility model or equivalent replacement, in Shen
Within the claims of the utility model that please be pending.
Claims (9)
1. a kind of detection device of three-phase current unbalance regulating device, which is characterized in that the three-phase current unbalance is adjusted
Device includes controller and M phase-change switch；The detection device includes inlet wire, the first air-break, current transformer, mother
Row, individual load module and adjusting loading module, carry out M phase-change switch by individual load module and adjusting loading module
Detection；
First air-break is arranged on inlet wire, the voltage of three-phase voltage and zero curve the connection controller of outlet side into
Line, and it connects busbar by current transformer, the individual load module and adjusting loading module are connect with busbar respectively.
2. the detection device of three-phase current unbalance regulating device according to claim 1, which is characterized in that the electric current
The primary side of mutual inductor connects the first air-break, and secondary side connects the electric current inlet wire of controller.
3. the detection device of three-phase current unbalance regulating device according to claim 1, which is characterized in that the independence
Loading module includes the second air-break, N number of relay unit and N number of load group；
The input terminal of second air-break connects busbar, and the input terminal of N number of relay unit is all connected with the second sky
The output end of gas breaker, output end are connected respectively the input terminal of N number of load group, the output end of N number of load group
Connect zero curve.
4. the detection device of three-phase current unbalance regulating device according to claim 3, which is characterized in that the relay
Device unit includes three relays, and three relays are respectively connected to different separate.
5. the detection device of three-phase current unbalance regulating device according to claim 3, which is characterized in that the independence
Each relay unit output end in loading module is correspondingly connected with a load group, and each load group includes the negative of different numbers
It is in parallel to pass through conversion terminal in each load group for lotus between each load.
6. the detection device of three-phase current unbalance regulating device according to claim 5, which is characterized in that the independence
First load group that first relay unit output end in loading module is correspondingly connected with include a load, second after
Second load group that electric appliance unit output end is correspondingly connected with includes two loads in parallel, and so on, n-th relay list
The n-th load group that first output end is correspondingly connected with includes the load of N number of parallel connection.
7. the detection device of three-phase current unbalance regulating device according to claim 1, which is characterized in that the adjusting
Loading module includes M air relay and M load cell；
The input terminal of the M air relay connects busbar, and output end connects the first p-wire by conversion terminal respectively
One end, the input terminal of the M phase-change switch connect the other end of the first p-wire by different crocodile clips, and output end passes through
Different crocodile clips connect one end of the second p-wire, and the other end of second p-wire connects M load by conversion terminal
The output end of the input terminal of unit, the M load cell connects zero curve.
8. the detection device of three-phase current unbalance regulating device according to claim 7, which is characterized in that the commutation
The output end of switch is correspondingly connected with a load group, and each load group includes the load of different numbers, each negative in each load group
Pass through conversion terminal parallel connection between lotus.
9. the detection device of three-phase current unbalance regulating device according to claim 8, which is characterized in that the M
First load cell that the output end of first phase-change switch in phase-change switch is correspondingly connected with include a load, second
Second load cell that the output end of phase-change switch is correspondingly connected with includes two loads, the output end pair of third phase-change switch
The third load cell that should be connected includes three loads, and so on, the output end of m-th phase-change switch be correspondingly connected with the
M load cell includes M load.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820053373.9U CN207965070U (en) | 2018-01-12 | 2018-01-12 | A kind of detection device of three-phase current unbalance regulating device |
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| CN201820053373.9U CN207965070U (en) | 2018-01-12 | 2018-01-12 | A kind of detection device of three-phase current unbalance regulating device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261689A (en) * | 2019-06-26 | 2019-09-20 | 爱士惟新能源技术(江苏)有限公司 | Relay test method when photovoltaic DC-to-AC converter BUS Voltage unbalance and firewire are grounded |
| CN110412390A (en) * | 2019-08-30 | 2019-11-05 | 国网宁夏电力有限公司银川供电公司 | A kind of not electricity cut-off type prepared auto restart running simulation calibration equipment |
| CN110470920A (en) * | 2019-08-23 | 2019-11-19 | 廊坊英博电气有限公司 | A kind of power grid power compensation result test platform |
-
2018
- 2018-01-12 CN CN201820053373.9U patent/CN207965070U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261689A (en) * | 2019-06-26 | 2019-09-20 | 爱士惟新能源技术(江苏)有限公司 | Relay test method when photovoltaic DC-to-AC converter BUS Voltage unbalance and firewire are grounded |
| CN110261689B (en) * | 2019-06-26 | 2021-04-20 | 爱士惟新能源技术(江苏)有限公司 | Relay detection method for photovoltaic inverter BUS voltage unbalance and live wire grounding |
| CN110470920A (en) * | 2019-08-23 | 2019-11-19 | 廊坊英博电气有限公司 | A kind of power grid power compensation result test platform |
| CN110412390A (en) * | 2019-08-30 | 2019-11-05 | 国网宁夏电力有限公司银川供电公司 | A kind of not electricity cut-off type prepared auto restart running simulation calibration equipment |
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