CN106921286A - Distribution line failure simulation system power supply circuit - Google Patents
Distribution line failure simulation system power supply circuit Download PDFInfo
- Publication number
- CN106921286A CN106921286A CN201710212961.2A CN201710212961A CN106921286A CN 106921286 A CN106921286 A CN 106921286A CN 201710212961 A CN201710212961 A CN 201710212961A CN 106921286 A CN106921286 A CN 106921286A
- Authority
- CN
- China
- Prior art keywords
- phase
- power supply
- mains
- commutation bridge
- time relay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
Abstract
A kind of distribution line failure simulation system power supply circuit, is related to technical field of power systems, and what is solved is technical problem when reducing upper electricity to power surges.The circuit includes three phase mains, exchange time relay, three-phase ac contactor, three-phase commutation bridge；The control coil of the exchange time relay is connected to the uniline in three phase mains, and the control coil of three-phase ac contactor is connected to the uniline in three phase mains by the contact of sound all the way of exchange time relay；The output of the three-phase commutation bridge is terminated with filter capacitor；Each three-phase firewire that three phase mains is coupled with through a negative tempperature coefficient thermistor of the three-phase input end of three-phase commutation bridge, and each contact of sound all the way through three-phase ac contactor of three-phase input end of three-phase commutation bridge is coupled with the three-phase firewire of three phase mains.The circuit that the present invention is provided is low to power supply capacity requirement.
Description
Technical field
The present invention relates to power system technology, more particularly to a kind of skill of distribution line failure simulation system power supply circuit
Art.
Background technology
In recent years, distribution automation is developed rapidly, used as the indicating fault of power distribution automation important component
Device obtains large-scale application, to ensure product quality, it is necessary to pass through distribution line failure simulation system right in laboratory environments
Fault detector is tested.The distribution line of simulated field is needed due to distribution line failure simulation system, its electric current is very big,
Need to be powered using large power supply, it is higher to power supply capacity requirement, and in system electrification to the impact of power supply compared with
Greatly, air switch tripping operation is easily caused, the normal work in laboratory is influenceed.
The content of the invention
For defect present in above-mentioned prior art, the technical problems to be solved by the invention are to provide in a kind of system
Impact when electric to power supply is small, and the distribution line failure simulation system power supply circuit low to power supply capacity requirement.
In order to solve the above-mentioned technical problem, a kind of distribution line failure simulation system power supply circuit provided by the present invention,
It is characterized in that：Including three phase mains, exchange time relay, three-phase ac contactor, three-phase commutation bridge；
The control coil of the exchange time relay is connected to the uniline in three phase mains, the control of three-phase ac contactor
Coil is connected to the uniline in three phase mains by the contact of sound all the way of exchange time relay；
The output of the three-phase commutation bridge is terminated with filter capacitor；The three-phase input end of three-phase commutation bridge is each through a negative temperature coefficient
Thermistor is coupled with the three-phase firewire of three phase mains, and the three-phase input end of three-phase commutation bridge is each through three-phase alternating current contact
The contact of sound all the way of device is coupled with the three-phase firewire of three phase mains.
The distribution line failure simulation system power supply circuit that the present invention is provided, adopts the Surge suppression that has access to electricity, time delay bypass, three
The measures such as commutating phase, impact when can avoid initial power-on by negative tempperature coefficient thermistor to power supply, and in exchange
Between under relay, the cooperation of three-phase ac contactor, normal operation mode can be automatically switched to after working stability, with system
The characteristics of impact when upper electric to power supply is small, and low to power supply capacity requirement.
Brief description of the drawings
Fig. 1 is the circuit diagram of the distribution line failure simulation system power supply circuit of the embodiment of the present invention.
Specific embodiment
Embodiments of the invention are described in further detail below in conjunction with brief description of the drawings, but the present embodiment is not used to limit
The system present invention, it is every to use similar structure of the invention and its similar change, protection scope of the present invention all should be listed in, the present invention
In pause mark represent the relation of sum.
As shown in figure 1, a kind of distribution line failure simulation system power supply circuit that the embodiment of the present invention is provided, its feature
It is：Including three phase mains, exchange time relay JD1, three-phase ac contactor JD2, three-phase commutation bridge D1；
The control coil of the exchange time relay JD1 is connected to the uniline in three phase mains, three-phase ac contactor JD2
Control coil uniline in three phase mains is connected to by the contact of sound all the way of exchange time relay JD1；
The output of the three-phase commutation bridge D1 is terminated with filter capacitor C1；The three-phase input end of three-phase commutation bridge D1 is each through a subzero temperature
Degree coefficient resistance（RT1、RT2、RT3）It is coupled with three-phase firewire Ua, Ub, Uc of three phase mains, and three-phase commutation bridge
Each contact of sound all the way through three-phase ac contactor JD2 of the three-phase input end of D1 is coupled with the three-phase firewire of three phase mains
Ua、Ub、Uc。
The operation principle of the embodiment of the present invention is as follows：
During initial power-on, the control coil of exchange time relay JD1 obtains electric, because the time delay of exchange time relay JD1 is made
With three phase mains first passes through powerful negative tempperature coefficient thermistor RT1, RT2, RT3, and three-phase commutation bridge D1 to filtered electrical
Hold C1 charge, due to the characteristic of negative tempperature coefficient thermistor, its in low temperature with certain resistance value, on limiting
Electric surge current, with self-heating, resistance value reduction, so that protect itself be not burned, according to laboratory power supply capacity need
The negative tempperature coefficient thermistor of suitable resistance is selected, can be by upper electric surge current limitation within the acceptable range；
After exchange time relay JD1 delay times are arrived, the sound closing of contact of exchange time relay applies alternating current
Onto the control coil of three-phase ac contactor JD2, so that the three tunnel sound closings of contact of three-phase ac contactor, now match somebody with somebody
Line fault simulation system enters normal operating condition, suitable according to negative tempperature coefficient thermistor, filter capacitor selection
Delay time constant, it is ensured that when the time relay is acted, filter capacitor is filled with, so as to avoid the impact to power supply.
The two ends of filter capacitor C1 are directly taken from the power supply of distribution line failure simulation system, because high power three-phase is whole
Stream, super capacitor filtering, its dc source output stabilization, and system power needs can be met.
Claims (1)
1. a kind of distribution line failure simulation system power supply circuit, it is characterised in that：Including three phase mains, exchange time relay
Device, three-phase ac contactor, three-phase commutation bridge；
The control coil of the exchange time relay is connected to the uniline in three phase mains, the control of three-phase ac contactor
Coil is connected to the uniline in three phase mains by the contact of sound all the way of exchange time relay；
The output of the three-phase commutation bridge is terminated with filter capacitor；The three-phase input end of three-phase commutation bridge is each through a negative temperature coefficient
Thermistor is coupled with the three-phase firewire of three phase mains, and the three-phase input end of three-phase commutation bridge is each through three-phase alternating current contact
The contact of sound all the way of device is coupled with the three-phase firewire of three phase mains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212961.2A CN106921286A (en) | 2017-04-01 | 2017-04-01 | Distribution line failure simulation system power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710212961.2A CN106921286A (en) | 2017-04-01 | 2017-04-01 | Distribution line failure simulation system power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106921286A true CN106921286A (en) | 2017-07-04 |
Family
ID=59568587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710212961.2A Withdrawn CN106921286A (en) | 2017-04-01 | 2017-04-01 | Distribution line failure simulation system power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106921286A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201937465U (en) * | 2010-12-28 | 2011-08-17 | 芜湖国睿兆伏电子股份有限公司 | Soft start control device |
| JP2011182568A (en) * | 2010-03-02 | 2011-09-15 | Hanshin Electric Co Ltd | Rush current suppression device |
| CN203368015U (en) * | 2013-07-18 | 2013-12-25 | 江苏省黑马高科技发展有限责任公司 | A surge inhibition current protective device |
| CN203415950U (en) * | 2013-08-15 | 2014-01-29 | 深圳市金威源科技股份有限公司 | Electricity-using device input soft start resistor protection circuit |
| CN206650578U (en) * | 2017-04-01 | 2017-11-17 | 上海紫通信息科技有限公司 | Distribution line failure simulation system power supply circuit |
-
2017
- 2017-04-01 CN CN201710212961.2A patent/CN106921286A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011182568A (en) * | 2010-03-02 | 2011-09-15 | Hanshin Electric Co Ltd | Rush current suppression device |
| CN201937465U (en) * | 2010-12-28 | 2011-08-17 | 芜湖国睿兆伏电子股份有限公司 | Soft start control device |
| CN203368015U (en) * | 2013-07-18 | 2013-12-25 | 江苏省黑马高科技发展有限责任公司 | A surge inhibition current protective device |
| CN203415950U (en) * | 2013-08-15 | 2014-01-29 | 深圳市金威源科技股份有限公司 | Electricity-using device input soft start resistor protection circuit |
| CN206650578U (en) * | 2017-04-01 | 2017-11-17 | 上海紫通信息科技有限公司 | Distribution line failure simulation system power supply circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170704 |
|
| WW01 | Invention patent application withdrawn after publication |