CN107390072A - SVG ageing testing methods and its device - Google Patents

SVG ageing testing methods and its device Download PDF

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Publication number
CN107390072A
CN107390072A CN201710744576.2A CN201710744576A CN107390072A CN 107390072 A CN107390072 A CN 107390072A CN 201710744576 A CN201710744576 A CN 201710744576A CN 107390072 A CN107390072 A CN 107390072A
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svg
burn
test
current
station
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CN107390072B (en
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蔡鹏�
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SHANGHAI LANRY ELECTRIC CO Ltd
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SHANGHAI LANRY ELECTRIC CO Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere

Abstract

The invention discloses a kind of SVG ageing testing methods and its device, it make it that alternately multistage is improved and cancelled out each other in real time SVG output reactive powers automatically using two SVG output current cross feedback as the instruction current of other side, meet multigroup SVG while carry out burn-in test, improve burn-in test efficiency;Export in SVG normal agings or when thering is SVG to break down in ageing process total reactive power and can reduce influence of the burn-in test to power grid quality in real time automatically close to zero;When burn-in test platform puts into or withdraws from SVG, other SVG burn-in test is still normally carried out in the case of uncomfortable whole burn-in test platform, easy to operate.

Description

SVG ageing testing methods and its device
Technical field
The present invention relates to technical field of electric power, more particularly, to a kind of SVG ageing testing methods and its device.
Background technology
In power supply system, the power factor of power network can be improved using reactive power compensation device, so as to reduce The loss of supply transformer and conveying circuit, improve power supply environment, improve the quality of power supply of power network;(static reacance occurs SVG Device) both can be with compensating power, and can filters out harmonics restraint three-phase imbalance, therefore it is at present using wide idle Compensation device.In order to ensure SVG device can stablize, reliability service, burn-in test can be carried out before dispatching from the factory, structure burn-in test is put down The key of platform is to avoid exporting the problem of substantial amounts of reactive power causes power factor of electric network to reduce during degradation.And with The a large amount of of product SVG to come into operation, improve burn-in test efficiency and also seem further important.
SVG burn-in tests means have two kinds at present, and a kind of is that traditional SVG band industrial frequency reactors are loaded and sent out to power network Send the aging techniques of part inductive reactive power.Another kind is patent CN103487675A《A kind of silent oscillation dynamic reactive-load adjusting device Senile experiment system》In method:Two SVG and in switch cubicle, a SVG send capacitive reactive power electric current, observe switch cubicle Current value, when it reaches rated capacity current value in factory, another SVG of control makes it send lagging reactive power, and observation is opened The current value of cabinet is closed, when it is close to 0, continues to increase the capacitive reactive power electric current that First SVG is sent;Repeat above step Suddenly, until two SVG run to rated current.
SVG with industrial frequency reactor load and to power network transmitting portion inductive reactive power aging techniques in factory power network it is specified Under the limitation of capacity and reactive load, it is impossible to meet the SVG of more high-power grade burn-in test.Patent CN103487675A 《A kind of senile experiment system of silent oscillation dynamic reactive-load adjusting device》Method, although can solve in factory net capacity with And in the case of the presence limitation of reactive load electric current the problem of SVG rated power agings, but adjusted according to the current value of switch cubicle The process that two SVG of section send the size of reactive current needs to have come by the third party such as artificial regulation or software module regulation Into;And SVG, in burn-in test, two SVG output current is according to switch cubicle electric current rather than the output according to other side Electric current is adjusted, therefore wherein a SVG breaks down, and another SVG continues to send reactive power, produce be more than it is specified in factory The reactive power of capacity, the problem of influenceing power factor of electric network.
The content of the invention
The purpose of the present invention is exactly to solve the above problems, there is provided a kind of SVG ageing testing methods and its device.
In order to solve the above technical problems, the invention provides a kind of SVG ageing testers, it includes N number of detection unit, Each detection unit has two stations, and the circuit that each station is connected to switch cubicle is provided with breaker, and each station is set There is the Current Transmit for detecting SVG output currents, each station is provided with the indicator lamp that instruction burn-in test is completed.
Present invention also offers a kind of SVG ageing testing methods, Current Transmit detects the defeated of the SVG on two stations Go out electric current, two SVG of cross feedback output current, by negative gain (be less than -1, and close to -1) finger as other side afterwards Electric current is made, realizes that two SVG output current automatic multi-steps alternately improve, until SVG runs to rated current;When SVG is exported After the cumulative time of rated current of the electric current more than 90% reaches the burn-in test stipulated time, the automatic aging for disconnecting corresponding station Breaker on measurement circuit, while the indicator lamp on corresponding station is lighted, and indicates that the SVG on the station completes burn-in test.
Compared with prior art, the present invention makes two SVG output current cross feedback as the instruction current of other side Obtaining SVG output reactive powers, alternately multistage is improved and cancelled out each other in real time automatically, is met multigroup SVG while is carried out aging survey Examination, improve burn-in test efficiency;In SVG normal agings or output total idle when thering is SVG to break down in ageing process Power can reduce influence of the burn-in test to power grid quality in real time automatically close to zero;When burn-in test platform is put into or is removed When going out SVG, other SVG burn-in test is still normally carried out in the case of uncomfortable whole burn-in test platform, easy to operate.
Brief description of the drawings
Fig. 1 is SVG burn-in test platform schematic diagrames;
Fig. 2 is burn-in test working platform flow chart.
Embodiment
In order that the technical means, the inventive features, the objects and the advantages of the present invention are easy to understand, tie below Specific embodiment is closed, the present invention is expanded on further.
A kind of SVG ageing testing methods, it uses two SVG of cross feedback output current to go to control SVG outputs idle The new equipment that automatic multi-step is improved, mutually compensated for, is first connected to the grid using two static reacance generators as one group;Again by setting Feedback oscillator is put less than -1 and close to -1 instruction current for removing two SVG of cross-over control;Then SVG situations are normally being started Under, by SVG instruction current amplitude ceiling restriction to export electric current during rated reactive power capacity, finally add up SVG outputs The time of rated current of the electric current more than 90%, if being more than the burn-in test stipulated time, mark aging is completed.
SVG ageing testing methods are illustrated with reference to Fig. 1, the SVG ageing testing methods include following flow:
S1:Station 1 and station 2 are respectively placed in using two static reacance generators SVG1, SVG2 as one group, closure is disconnected Road device CB1, CB2;
S2:The absolute value lower limit amplitude limit of SVG instruction currents is arranged to the 5% of its rated current to start SVG;
S3:Current Transmit detects SVG1, SVG2 output current I1、I2, intersect respectively after feedback oscillator k and make For SVG2, SVG1 instruction current, i.e.,:I1f=kI2, I2f=kI1
S4:Set feedback oscillator k values for less than -1 and close to -1 value, so as to fluctuate it is less in the case of it is automatic gradual Increase the idle power output of two static reacance generators until SVG runs to rated reactive power value;
S5:By the absolute value upper limit amplitude limit of two SVG instruction current be arranged to export rated reactive power capacity when Electric current;
S6:The time of accumulative rated current of the SVG output currents more than 90%, when it reaches the burn-in test stipulated time Afterwards, the breaker on the automatic burn-in test circuit for disconnecting corresponding station, while the indicator lamp on corresponding station is lighted, mark is old Change test to complete.
From the discussion above it is seen that, the reactive power that SVG is sent when carrying out burn-in test is offset in real time so that SVG It can reach in the case of any one SVG breaks down in ageing process in normal aging or one group and export always idle Power in real time automatically close to zero effect, reduce influence of the burn-in test to power grid quality;Aging platform can meet more Group SVG carries out burn-in test simultaneously, improves burn-in test efficiency;The setting of burn-in test complement mark conveniently can judge aging Test whether to complete;When burn-in test platform is put into or when withdrawing from SVG, in the case of uncomfortable whole burn-in test platform other SVG burn-in test is still normally carried out, easy to operate, is realized simple.
Referring to Fig. 2, SVG ageing testers, it includes N number of detection unit, shown in figure the first detection unit P1 with And N detection unit Pn, each detection unit have two stations, the circuit that each station is connected to switch cubicle is provided with open circuit Device, each station are provided with the Current Transmit for detecting SVG output currents, and each station is provided with instruction burn-in test The indicator lamp of completion.
Ageing tester detects the SVG output currents on two stations, two SVG of cross feedback by current transformer Output current, the instruction current as other side after bearing gain, realize that two SVG output current automatic multi-steps alternately carry Height arrive rated current, adds up the time that SVG output currents are more than 90% rated current, when reaching the burn-in test stipulated time Afterwards, indicate that burn-in test is completed.Two SVG are one group, pass through two SVG of cross feedback output current, automatic multi-step alternating Output current is improved, aging can be carried out to multigroup SVG simultaneously;It can guarantee that any one SVG is carrying out ageing process in one group In when breaking down, the reactive power that another SVG is sent can be reduced to 0 automatically;It can also meet that burn-in test platform is in office The meaning moment can put into or cut out one or more groups of SVG;Burn-in test is improved while power factor of electric network is not influenceed Efficiency.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention, And in actual applications, can to it, various changes can be made in the form and details, without departing from the spirit and scope of the present invention.

Claims (2)

1. a kind of SVG ageing testers, it is characterised in that it includes N number of detection unit, and each detection unit has two works Position, the circuit that each station is connected to switch cubicle are provided with breaker, and each station is provided with for detecting SVG output currents Current Transmit, each station are provided with the indicator lamp that instruction burn-in test is completed.
2. a kind of SVG ageing testing methods, it is characterised in that this method includes:
S1:Station 1 and station 2, close circuit breaker are respectively placed in using two static reacance generators SVG1, SVG2 as one group CB1,CB2;
S2:The absolute value lower limit amplitude limit of SVG instruction currents is arranged to the 5% of its rated current to start SVG;
S3:Current Transmit detects SVG1, SVG2 output current I1、I2, intersect conduct respectively after feedback oscillator k SVG2, SVG1 instruction current, i.e.,:I1f=kI2, I2f=kI1
S4:Set feedback oscillator k values for less than -1 and close to -1 value, so as to fluctuate it is less in the case of automatic gradually increase The idle power output of two static reacance generators runs to rated reactive power value until SVG;
S5:The absolute value upper limit amplitude limit of two SVG instruction current is arranged to export to electric current during rated reactive power capacity;
S6:The time of accumulative rated current of the SVG output currents more than 90%, after it reaches the burn-in test stipulated time, from Dynamic circuit breaker opens the breaker on the burn-in test circuit of corresponding station, while lights the indicator lamp on corresponding station, and mark aging is surveyed Examination is completed.
CN201710744576.2A 2017-08-25 2017-08-25 SVG aging test method and device Active CN107390072B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110389270A (en) * 2019-05-14 2019-10-29 深圳市禾望电气股份有限公司 A kind of grid adaptability test method of reacance generator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101262850B1 (en) * 2008-12-05 2013-05-22 한국전자통신연구원 SVG image output apparatus using caching techniques and method thereof
CN103487675A (en) * 2013-07-03 2014-01-01 东方日立(成都)电控设备有限公司 Ageing experiment system and method for static dynamic reactive power adjusting devices
CN203720284U (en) * 2014-01-17 2014-07-16 海南金盘电气有限公司 Testing system of static var generator
CN104538975A (en) * 2014-12-26 2015-04-22 西安爱科赛博电气股份有限公司 Reactive compensation method and device having transformer reactive current real-time compensation function
CN206258525U (en) * 2016-11-28 2017-06-16 上海希形科技有限公司 SVG aging circuits

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101262850B1 (en) * 2008-12-05 2013-05-22 한국전자통신연구원 SVG image output apparatus using caching techniques and method thereof
CN103487675A (en) * 2013-07-03 2014-01-01 东方日立(成都)电控设备有限公司 Ageing experiment system and method for static dynamic reactive power adjusting devices
CN203720284U (en) * 2014-01-17 2014-07-16 海南金盘电气有限公司 Testing system of static var generator
CN104538975A (en) * 2014-12-26 2015-04-22 西安爱科赛博电气股份有限公司 Reactive compensation method and device having transformer reactive current real-time compensation function
CN206258525U (en) * 2016-11-28 2017-06-16 上海希形科技有限公司 SVG aging circuits

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110389270A (en) * 2019-05-14 2019-10-29 深圳市禾望电气股份有限公司 A kind of grid adaptability test method of reacance generator

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