CN107222089A - A kind of power model voltage-stabilized power supply of chain type current transformer - Google Patents

A kind of power model voltage-stabilized power supply of chain type current transformer Download PDF

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Publication number
CN107222089A
CN107222089A CN201710393492.9A CN201710393492A CN107222089A CN 107222089 A CN107222089 A CN 107222089A CN 201710393492 A CN201710393492 A CN 201710393492A CN 107222089 A CN107222089 A CN 107222089A
Authority
CN
China
Prior art keywords
power
power supply
supply
voltage
stabilized
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.)
Pending
Application number
CN201710393492.9A
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Chinese (zh)
Inventor
苟锐锋
孙广星
陈干
杨晓平
杨涛
江戈
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China XD Electric Co Ltd
Original Assignee
China XD Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China XD Electric Co Ltd filed Critical China XD Electric Co Ltd
Priority to CN201710393492.9A priority Critical patent/CN107222089A/en
Publication of CN107222089A publication Critical patent/CN107222089A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/0067Converter structures employing plural converter units, other than for parallel operation of the units on a single load
    • H02M1/0077Plural converter units whose outputs are connected in series

Abstract

The present invention discloses a kind of power model voltage-stabilized power supply of chain type current transformer, including the first isolation voltage-stabilized power supply, the second isolation voltage-stabilized power supply, an external input power end and an outside out-put supply end;The input of first isolation voltage-stabilized power supply terminates to the DC capacitor two ends of power model, and its output end and the second output end for isolating voltage-stabilized power supply connect together, and provide control power supply for power model, and be connected to outside out-put supply end;The input of second isolation voltage-stabilized power supply is connected to external input power end, after power model hinders for some reason to be bypassed, power model can obtain power supply from the control power supply of adjacent power model, so that realizing that bypass is possibly realized using the power semiconductor of H bridge power models, mechanical bypass switch is eliminated.

Description

A kind of power model voltage-stabilized power supply of chain type current transformer
Technical field
The invention belongs to field of electric automatization equipment, it is related to a kind of power model voltage-stabilized power supply of chain type current transformer.
Background technology
Chain type current transformer (also known as H bridges series converter) is in series by the exchange output of multiple power models, Chang Ying For in the electronic power conversion devices such as chain static synchronous compensator (also known as chain type STATCOM or chain type SVG).
Because chain type current transformer is usually used in application scenario (3kV-35kV) of the output compared with high alternating voltage, wherein power mould The control power supply of block is general to be obtained from DC capacitor.If fault power module is because cost reason does not use mechanical by-pass and adopts Bypass is realized with the semiconductor switch in its H bridge, because power model is bypassed possible dead electricity (such as chain type SVG of rear DC capacitor DC bus capacitor) so as to cause bypass to fail, therefore the power model of failure needs to obtain control from adjacent power model Power supply.It is, thus, sought for a kind of control power supply power supply mode of mutual power taking.
The content of the invention
To overcome the deficiency of prior art, the purpose of the present invention is to propose to a kind of power model voltage stabilizing of chain type current transformer electricity Source, using the control power supply power supply mode of the mutual power taking of adjacent power module, solves power model and hinders the control after being bypassed for some reason Power loss problem.
To achieve the above object, the present invention uses following technical scheme:
A kind of power model voltage-stabilized power supply of chain type current transformer, each power model includes the first isolation voltage-stabilized power supply, the Two isolation voltage-stabilized power supplies, an external input power end and an outside out-put supply end;The input of first isolation voltage-stabilized power supply The DC capacitor two ends of power model are terminated to, its output end and the second output end for isolating voltage-stabilized power supply connect together, and are Power model provides control power supply, and is connected to outside out-put supply end;The input of second isolation voltage-stabilized power supply is connected to outer Portion's input supply terminal;
Two adjacent power models, wherein the outside out-put supply end of the first power model is connected to the second power model External input power end, the external input power end of the first power model is connected to the outside out-put supply of the second power model End, so as to form mutual power taking.
Further, the first described isolation voltage-stabilized power supply and second isolation voltage-stabilized power supply all isolated DC inversion of direct current are switched Voltage-stabilized power supply.
The power model voltage-stabilized power supply of the chain type current transformer of the present invention, control power supply of the power model from adjacent power model Obtain power supply so that even if DC capacitor dead electricity can also maintain control power supply after power model failure, can use in H bridges Power semiconductor realize bypass, mechanical bypass switch is saved, so as to save power model cost.
Brief description of the drawings
Fig. 1 is the circuit diagram of the power model voltage-stabilized power supply of chain type current transformer in the present invention
Embodiment
With reference to embodiment, the invention will be described in further detail.
The power model voltage-stabilized power supply of the chain type current transformer of the present invention, including the first isolation voltage-stabilized power supply, the second isolation are surely The outside out-put supply end of voltage source, an external input power end and one;The input of first isolation voltage-stabilized power supply terminates to work( The output end of the DC capacitor two ends of rate module, its output end and the second isolation voltage-stabilized power supply connects together, and is power model Control power supply is provided, and is connected to outside out-put supply end;The input of second isolation voltage-stabilized power supply is connected to outside input electricity Source.
In above-mentioned power model voltage-stabilized power supply, described the first isolation voltage-stabilized power supply and the second isolation voltage-stabilized power supply is all used Conventional isolated DC inversion of direct current switching power supply.
Present disclosure is discussed in detail below in conjunction with accompanying drawing.
Shown in Fig. 1, the adjacent power model 1 and power model 2 in a phase chain type current transformer is illustrated.In Fig. 1, partly lead Body switching device SLA1, SLB1, SRA1, SRB1 and its anti-paralleled diode, electric capacity C1 constitute the main circuit of power model 1, half Conductor switching device SLA2, SLB2, SRA2, SRB2 and its anti-paralleled diode, electric capacity C2 constitute the main circuit of power model 2. In Fig. 1, the isolation voltage-stabilized power supply 1 in power model 1 obtains DC supply input from the DC capacitor C1 two ends of power model 1, And constant voltage dc source VC1+/VC1- is exported, as the control power supply of power model 1, while being connected to the outside of power model 1 Out-put supply end VO1+/VO1-;The input of the isolation voltage-stabilized power supply 2 of power model 1 is connected to the outside input of power model 1 Power end VI1+/VI1-, the output end of isolation voltage-stabilized power supply 2 is parallel-connected to VC1+/VC1-.The isolation voltage stabilizing of power model 2 Power supply 1 obtains DC supply input from the DC capacitor C2 two ends of power model 2, and exports constant voltage dc source VC2+/VC2-, As the control power supply of power model 2, while being connected to the outside out-put supply end VO2+/VO2- of power model 2;Power model The input of 2 isolation voltage-stabilized power supply 2 is connected to the external input power end VI2+/VI2- of power model 2, isolates voltage-stabilized power supply 2 output end is parallel-connected to VC2+/VC2-.The outside that the outside out-put supply end of power model 1 is connected to power model 2 is defeated Enter power end, and the external input power end of power model 1 is connected to the outside out-put supply end of power model 2, so as to be formed Mutual power taking.
Isolation voltage-stabilized power supply 2 is by the 15V direct currents on adjacent power unit by one by UCC3807 power supply control chip groups Into forward conversion circuit isolation and amplifier after be used as back-up source.Isolate the also output supply isolation voltage stabilizing all the way of voltage-stabilized power supply 1 The clamp that does of power supply 1 is used;
When power model 1 hinders for some reason to be needed to be bypassed, SLB1 and SRB1 is simultaneously turned on or SLA1 and SRA1 is simultaneously turned on, So as to form the ac output end bypass of power model 1.But after being bypassed, DC capacitor C1 cannot get charger meeting, so that meeting 0 voltage is discharged into, the isolation voltage-stabilized power supply 1 of power model 1 can not continue as power model 1 and provide control power supply, power afterwards The isolation voltage-stabilized power supply 2 of module 1 obtains DC supply input from the control power supply VC2+/VC2- of power model 2, so as to be power Module 1 continues to provide control power supply, it is ensured that SLB1/SRB1 or SLA1/SRA1 gate pole conducting drive signal.
Although the above-mentioned embodiment to the present invention is described, not to the limit of the scope of the present invention System, the art personnel should be understood that on the basis of technical scheme those skilled in the art need not pay Go out various modifications or deform still within protection scope of the present invention that creative work can make.

Claims (2)

1. a kind of power model voltage-stabilized power supply of chain type current transformer, it is characterised in that:It is steady that each power model includes the first isolation Voltage source, the second isolation voltage-stabilized power supply, an external input power end and an outside out-put supply end;First isolation voltage stabilizing electricity The input in source terminates to the DC capacitor two ends of power model, and its output end and the second output end for isolating voltage-stabilized power supply are attempted by Together, control power supply is provided for power model, and is connected to outside out-put supply end;The input of second isolation voltage-stabilized power supply connects It is connected to external input power end;
Two adjacent power models, wherein the outside out-put supply end of the first power model is connected to the outer of the second power model Portion's input supply terminal, the external input power end of the first power model is connected to the outside out-put supply end of the second power model, So as to form mutual power taking.
2. the power model voltage-stabilized power supply of chain type current transformer according to claim 1, it is characterised in that:Described first every From voltage-stabilized power supply and the second isolation voltage-stabilized power supply all isolated DC inversion of direct current switching power supplies.
CN201710393492.9A 2017-05-27 2017-05-27 A kind of power model voltage-stabilized power supply of chain type current transformer Pending CN107222089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710393492.9A CN107222089A (en) 2017-05-27 2017-05-27 A kind of power model voltage-stabilized power supply of chain type current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710393492.9A CN107222089A (en) 2017-05-27 2017-05-27 A kind of power model voltage-stabilized power supply of chain type current transformer

Publications (1)

Publication Number Publication Date
CN107222089A true CN107222089A (en) 2017-09-29

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Application Number Title Priority Date Filing Date
CN201710393492.9A Pending CN107222089A (en) 2017-05-27 2017-05-27 A kind of power model voltage-stabilized power supply of chain type current transformer

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203562783U (en) * 2013-09-27 2014-04-23 思源清能电气电子有限公司 High voltage SVG system with chain type composition
CN203775064U (en) * 2014-01-08 2014-08-13 张家港智电西威变流技术有限公司 Modular multilevel converter converting module device with short circuit protection
US9130404B2 (en) * 2012-04-17 2015-09-08 Dar Yun Energy Science Technology Co., Ltd. Multiple redundant solar power system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9130404B2 (en) * 2012-04-17 2015-09-08 Dar Yun Energy Science Technology Co., Ltd. Multiple redundant solar power system
CN203562783U (en) * 2013-09-27 2014-04-23 思源清能电气电子有限公司 High voltage SVG system with chain type composition
CN203775064U (en) * 2014-01-08 2014-08-13 张家港智电西威变流技术有限公司 Modular multilevel converter converting module device with short circuit protection

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Application publication date: 20170929

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