CN102121957B - Performance testing system of large-capacity reactive power dynamic compensating device - Google Patents
Performance testing system of large-capacity reactive power dynamic compensating device Download PDFInfo
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- CN102121957B CN102121957B CN2010106049615A CN201010604961A CN102121957B CN 102121957 B CN102121957 B CN 102121957B CN 2010106049615 A CN2010106049615 A CN 2010106049615A CN 201010604961 A CN201010604961 A CN 201010604961A CN 102121957 B CN102121957 B CN 102121957B
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Abstract
The invention discloses a performance testing system of a large-capacity reactive power dynamic compensating device, comprising a detected reactive power dynamic compensating device, wherein the performance of the dynamic compensating device is to be detected. The performance testing system is characterized by also comprising an electric energy quality analyzer, a high-voltage switch cabinet, an active load and an inactive load, wherein the active load is externally connected with a power grid by the high-voltage switch cabinet and is connected with the dynamic reactive power compensating device in parallel; and the inactive load provides adjustably capacitive or inductive reactive power having the property opposite to the property of the reactive power generated by the detected reactive power dynamic compensating device. The performance testing system has the beneficial effect that a full load test and a system performance test are carried out for the large-capacity reactive power dynamic compensating device by smaller-capacity power grids in factories or laboratories. The quality problem possibly existing in the device is easier to find to ensure that the device is successively put into operation once on the scene.
Description
Technical field
The present invention relates to a kind of system that realization is tested high capacity reactive power dynamic compensation device performance in the low capacity electrical network, belong to technical field of power systems.
Background technology
At present, in order to improve the quality of power supply and to lower line loss, energy-conservation economize on electricity, high capacity reactive power dynamic compensation dress
Put at the electric system transmission and distribution network and obtain increasing application.The high capacity reactive power dynamic compensation is adorned at present
Putting the static passive compensation device (SVC-static Var compensator) that mainly contains based on thyristor valve reaches
Advanced static reacance generator (ASVG-Advanced Static Var Generator) based on power transistor
Also the someone is referred to as static phase modifier (STATCOM-Static Condenser), and their common characteristic are
The reactive power capacity that can produce is big, generally at several Mvar to tens Mvar even to Mvar up to a hundred.
Therefore, make with research department will be in factory or laboratory to the high capacity reactive power dynamic compensation device
Carrying out full-load test and performance test thereof will have serious consequences to consumer networks, if factory or laboratory
Net capacity less (for example hundreds of KVA) carries out the full load examination to the high capacity reactive power dynamic compensation device
Test and the test of performance system will be difficult to carry out.For example at State Standard of the People's Republic of China " GB/T
The Power Electronic Technique static passive compensation device of 20995-2007 electrical power trans mission/distribution systems is with the examination of thyristor valve
Test " only stipulate the critical component thyristor valve in the static passive compensation device is carried out delivery test, and complete machine
Test can only adopt field testing procedure (to see State Standard of the People's Republic of China " GB/T 20297-2006
Static passive compensation device (SVC) site test ").Manufacturing plant that power supply capacity is less or laboratory because
When dispatching from the factory, can't carry out full-load test and its performance is carried out to the high capacity reactive power dynamic compensation device
The test of system, thus be difficult to the quality problems of finding that device possibly exist, also be difficult to make device at the scene once
Put into operation successfully.
Summary of the invention
Be technical deficiency more than solving, the invention provides and a kind ofly can carry out the high capacity reactive power dynamic compensation device Performance Test System that the high capacity reactive power dynamic compensation device carries out full-load test and performance is tested to existing less manufacturing plant or the laboratory of power supply capacity.
A kind of high capacity reactive power dynamic compensation device Performance Test System that the present invention proposes; The tested reactive power dynamic compensation device that comprises performance to be measured also comprises power quality analyzer, high-tension switch cabinet and the active load that is in parallel through the high-tension switch cabinet outside electric power network and with tested reactive power dynamic compensation device and provides and the incompatible adjustable capacitive of reactive power that tested reactive power dynamic compensation device produces or the reactive load of lagging reactive power;
Be provided with the voltage transformer pt summation current transformer CT1 of outside electric power network in the said high-tension switch cabinet; Said tested reactive power dynamic compensation device string has current transformer CT2; The voltage signal input end of said power quality analyzer connects voltage transformer pt secondary side output terminal, and the current signal input end of said power quality analyzer connects the secondary side output terminal of current transformer CT1 or current transformer CT2 through change-over switch K;
For the ease of experimental implementation, above-mentioned reactive load preferentially adopts another and the identical reactive power dynamic compensation device of tested reactive power dynamic compensation device performance.
In when test, the reactive power close in value of above-mentioned tested reactive power dynamic compensation device and reactive load and and the general power of active load less than the capacity of outside electric power network.
Be provided with overcurrent protection in the above-mentioned high-tension switch cabinet; Be used for the setting valve that the control circuit total current is no more than overcurrent protection; Guarantee when breaking down or maloperation takes place; Isolating switch in the high-tension switch cabinet will trip rapidly, cut off being connected of tested reactive power dynamic compensation device and load and electrical network, avoid the impact of super-high-current to electrical network.
The invention has the beneficial effects as follows: avoided making with research department factory or laboratory the high capacity reactive power dynamic compensation device carried out full-load test and performance test thereof will bring consumer networks tight after
Really, realized the high capacity reactive power dynamic compensation being adorned at the less electrical network of capacity (for example hundreds of KVA)
Put the test of carrying out full-load test and performance system thereof, thereby than the matter that is easier to find that device possibly exist
The amount problem has guaranteed device once putting into operation successfully at the scene.
Description of drawings
Fig. 1 is that circuit of the present invention connects synoptic diagram.
Among the figure: 1 high-tension switch cabinet, 2 tested reactive power dynamic compensation devices, 3 reactive loads, 4 active loads, 5 power quality analyzers, 6 overcurrent protections.
Embodiment
Elaborate in the face of embodiments of the invention down, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
As shown in Figure 1, high capacity reactive power dynamic compensation device Performance Test System of the present invention, can realize that this test macro comprises to full-load test of high capacity reactive power dynamic compensation device and performance test at the low capacity electrical network:
The high-tension switch cabinet 1 of belt fuser DL1, voltage transformer pt summation current transformer CT1 inserts electrical network outward; The tested reactive power dynamic compensation device 2 of the high capacity of performance to be measured, its series connection isolating switch DL2 summation current transformer CT2; Through high-tension switch cabinet 1 outside electric power network and with tested reactive power dynamic compensation device 2 mutually and the low capacity active load 4 that connects with provide and the incompatible adjustable capacitive of reactive power that tested reactive power dynamic compensation device 2 produces or the reactive load 3 of lagging reactive power.Reactive load 3 can preferentially adopt another high capacity reactive power dynamic compensation device that has identical performance with tested high capacity reactive power dynamic compensation device 2.
Specifically, high-tension switch cabinet 1 input end links to each other with 6/10KV low capacity electrical network, and high-tension switch cabinet 1 its output terminal links to each other with the high capacity reactive power dynamic compensation device input end of performance to be measured through isolating switch DL2, current transformer CT2 respectively; Link to each other through isolating switch DL3, current transformer CT3 and reactive load 3 input ends that can produce adjustable capacitive or lagging reactive power; Link to each other with active load 4 input ends of the low capacity of fixing through isolating switch DL4.
Its principle of work is:
The principle of complementarity that adopts during according to test; Make reactive load 3 produce the idle incompatibility of idle character and 2 generations of tested reactive power dynamic compensation device; And the two size is approaching; Should progressively regulate when tested reactive power dynamic compensation device 2 changes with reactive load 3 its reactive power numerical value, make general power that tested reactive power dynamic compensation device 2 and reactive load 3 and active load 4 produce all the time less than the capacity of electrical network.
Its high-tension switch cabinet 1 of controlling tested reactive power dynamic compensation device 2 and load is provided with reliable overcurrent protection 6; The overcurrent protection setting valve should be chosen according to the capacity of electrical network; To guarantee when breaking down or maloperation takes place; When in case the total current through tested reactive power dynamic compensation device 2 and load surpasses the setting valve of overcurrent protection 6; Isolating switch in the high-tension switch cabinet 1 will trip rapidly, cut off being connected of tested reactive power dynamic compensation device 2 and load and electrical network, avoid the impact of super-high-current to electrical network.Current transformer CT2 summation current transformer CT3 can measure the electric current on tested reactive power dynamic compensation device branch road and the reactive load branch road.
Below be the test macro implementation step that the present invention proposes in the performance test of low capacity electrical network realization high capacity reactive power dynamic compensation device:
Let power quality analyzer 5 current signals provide by current transformer CT2; Let the high capacity reactive power dynamic compensation device and the reactive load 3 of performance to be measured all place given command status near zero current (zero reactive power) output; Successively close isolating switch DL1, DL2, DL3; DL4 puts system into operation.
Let reactive load 3 export lagging reactive powers earlier through manual or automatic given way; Its big I is from increasing to for example 100Kvar near zero reactive power; Also let the high capacity reactive power dynamic compensation device of performance to be measured export capacitive reactive power subsequently through manual or automatic given way; Its big I is from for example increasing to-150Kvar near zero reactive power; This set-point can by power quality analyzer 5 read the corresponding applied power S of high capacity reactive power dynamic compensation device of performance to be measured, active power P, parameters such as reactive power Q and active current, reactive current, total current, total harmonic current aberration rate THDi.
Progressively increase the high capacity reactive power dynamic compensation device output capacitive reactive power of reactive load 3 output lagging reactive powers and performance to be measured by 100Kvar grade (looking net capacity can increase or reduce); Each set-point all can by power quality analyzer 5 read the corresponding applied power S of high capacity reactive power dynamic compensation device of performance to be measured; Active power P; Parameters such as the harmonic wave resultant distortion rate THDi of reactive power Q and active current, reactive current, total current, electric current are exported capacitive reactive power until the high capacity reactive power dynamic compensation device of performance to be measured and are reached ratings.
Repeat above test; But let reactive load 3 export capacitive reactive powers earlier through manual or automatic given way; Its big I is from for example increasing to-100Kvar near zero reactive power; Also let the high capacity reactive power dynamic compensation device output lagging reactive power of performance to be measured through manual or automatic given way subsequently, its big I is from for example increasing to+150Kvar near zero reactive power, this set-point can by power quality analyzer 5 read the corresponding applied power S of high capacity reactive power dynamic compensation device of performance to be measured; Active power P, parameters such as the harmonic wave resultant distortion rate THDi of reactive power Q and active current, reactive current, total current, electric current.More than test can reach ratings to the high capacity reactive power dynamic compensation device output lagging reactive power of performance to be measured.
When above test because of adopting complementation progressively to regulate principle; The idle incompatibility that character that load generating is idle and tested reactive power dynamic compensation device 2 produce; And the two size is approaching; Thereby the total reactive power that guarantees tested reactive power dynamic compensation device 2 and load generating has realized in the full power test of low capacity electrical network to high capacity reactive power dynamic compensation device performance all the time less than the capacity of electrical network.
For the high capacity reactive power dynamic compensation device to performance to be measured is tested the performance of electric system transmission and distribution network power factor dynamic adjustments; Let power quality analyzer 5 its current signals provided by current transformer CT1, at this moment power quality analyzer 5 will detect the power factor value through the total current of tested high capacity reactive power dynamic compensation device and load.Let the high capacity reactive power dynamic compensation device target power factor of performance to be measured adjust before the test earlier a certain value (for example 0.95); Close isolating switch DL4 then; Active load 4 is put into operation earlier; Close isolating switch DL3 and let the idle value of a certain perception of reactive load 3 output that (for example+150Kvar), closing isolating switch DL2 again lets the high capacity reactive power dynamic compensation device of the performance to be measured back of putting into operation under the control of controller, export a certain size capacitive reactive power automatically because of value according to the target power of setting in advance.The target power that can confirm actual power factor value and setting by the reading of power quality analyzer 5 is because of the error between the value.Change the high capacity reactive power dynamic compensation device reactive-load compensation curve that reactive load 3 idle value sizes of output and character can obtain performance to be measured.
The foregoing description is said to be in order to specify this patent; Though describe through specific term in the literary composition; But can not limit the protection domain of this patent with this; The personage who is familiar with this technical field can change or revise it after the spirit of understanding this patent and principle and reach equivalent purpose, and this equivalence change and modification all should be covered by the claim scope and define in the category.
Claims (2)
1. high capacity reactive power dynamic compensation device Performance Test System; Comprise the tested reactive power dynamic compensation device of performance to be measured, it is characterized in that: also comprise power quality analyzer, high-tension switch cabinet and the active load that is in parallel through the high-tension switch cabinet outside electric power network and with tested reactive power dynamic compensation device and provide and the incompatible adjustable capacitive of reactive power that tested reactive power dynamic compensation device produces or the reactive load of lagging reactive power;
Be provided with the voltage transformer pt summation current transformer CT1 of outside electric power network in the said high-tension switch cabinet; Said tested reactive power dynamic compensation device string has current transformer CT2; The voltage signal input end of said power quality analyzer connects voltage transformer pt secondary side output terminal, and the current signal input end of said power quality analyzer connects the secondary side output terminal of current transformer CT1 or current transformer CT2 through change-over switch K; Reactive load adopts and the identical device of tested reactive power dynamic compensation device performance; In when test, the reactive power close in value of said tested reactive power dynamic compensation device and reactive load and and the general power of active load less than the capacity of outside electric power network.
2. according to the said high capacity reactive power dynamic compensation device of claim 1 Performance Test System, it is characterized in that: be provided with overcurrent protection in the said high-tension switch cabinet, be used for the setting valve that the control circuit total current is no more than overcurrent protection.
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| CN2010106049615A CN102121957B (en) | 2010-12-25 | 2010-12-25 | Performance testing system of large-capacity reactive power dynamic compensating device |
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| CN102435881A (en) * | 2011-09-22 | 2012-05-02 | 绍兴电力局 | Test circuit of dynamic reactive power compensation and harmonic control device and test method thereof |
| CN102591319B (en) * | 2011-12-08 | 2014-02-19 | 中电普瑞科技有限公司 | Test device and test method for STATCOM (Static Synchronous Compensator) controller |
| CN102818949B (en) * | 2012-07-17 | 2015-03-04 | 杭州银湖电气设备有限公司 | Full-load testing device for magnetically controlled reactors |
| CN102780234B (en) * | 2012-08-08 | 2014-03-19 | 中国二十二冶集团有限公司 | High-voltage electric debugging method for power generation project |
| CN103267914B (en) * | 2013-05-07 | 2016-09-21 | 国家电网公司 | The method for loss reduction effect reality testing of transformer reactive compensation |
| CN103267917B (en) * | 2013-06-06 | 2016-03-30 | 新风光电子科技股份有限公司 | A kind of method and apparatus of high-capacity reactive compensation device full-load test |
| CN103616581B (en) * | 2013-11-15 | 2016-04-27 | 国网河南省电力公司平顶山供电公司 | The method of without disconnecting power lead test reactive power compensator |
| CN103986133B (en) * | 2014-05-30 | 2016-08-17 | 上海交通大学 | The time delay over-current guard method started based on reactive power Sudden Changing Rate |
| CN107015084A (en) * | 2017-05-12 | 2017-08-04 | 国网上海市电力公司 | A kind of distribution reactive power compensator analogue test platform |
| CN107329023A (en) * | 2017-08-11 | 2017-11-07 | 杭州得诚电力科技股份有限公司 | The detecting system and detection method of a kind of reactive power compensator |
| CN109617117B (en) * | 2018-12-05 | 2022-02-11 | 国网北京市电力公司 | Protection system and method for SUC parallel operation full power test |
| CN110412377A (en) * | 2019-05-14 | 2019-11-05 | 深圳市禾望电气股份有限公司 | A kind of voltage failure of static reactive generator passes through test method |
| 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 |
| CN112600213B (en) * | 2020-12-08 | 2023-03-03 | 深圳供电局有限公司 | Optimal configuration method of non-energy-storage dynamic voltage restorer |
| TWI745203B (en) * | 2020-12-28 | 2021-11-01 | 國家中山科學研究院 | Split-phase active power adjustment method for static synchronous compensator |
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