CN103033700B - Detecting device of responding wave form of dynamic reactive power compensation equipment and detecting method of the same - Google Patents
Detecting device of responding wave form of dynamic reactive power compensation equipment and detecting method of the same Download PDFInfo
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- CN103033700B CN103033700B CN201210498341.7A CN201210498341A CN103033700B CN 103033700 B CN103033700 B CN 103033700B CN 201210498341 A CN201210498341 A CN 201210498341A CN 103033700 B CN103033700 B CN 103033700B
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Abstract
The invention discloses a testing method of the responding waveform of the dynamic reactive power compensation equipment. The detecting device and the detecting method solve the problem that firsthand detected sampling information of the responding time of the dynamic reactive power compensation equipment achieved by an existing detecting device is anamorphic. The device comprises a bus (1), the dynamic reactive power compensation equipment (7) and an oscillograph (12). A breaker (3) is arranged between the bus (1) and a first integral circuit (2). A secondary side A phase of a current transformer (4) of the first integral circuit, a secondary side A phase of a current transformer (6) of the second integral circuit, a secondary side A phase of a current transformer (8) of a reactive power compensation equipment circuit and a secondary side A phase of a current transformer (10) of the low-voltage side of a transformer are connected with a current waveform input terminal of the oscillograph (12) in an electric mode. A secondary side A phase of a voltage transformer (11) is connected with a voltage waveform input terminal of the oscillograph (12) in an electric mode. The detecting device of the responding time of the dynamic reactive power compensation equipment and the detecting method of the responding time of the dynamic reactive power compensation equipment are accurate in testing and suitable for being used in power grid sites.
Description
Technical field
The present invention relates to a kind of dynamic reactive compensation device accessing to the pick-up unit of the response wave shape of disturbing source and detection method in electrical network.
Background technology
Wind energy turbine set accesses after electrical network on a large scale, and the application of large quantities of power electronic equipments has caused the extensive off-grid of new problem, particularly wind-powered electricity generation to electrical network, can electrical network be caused and be had a strong impact on, for the safe and stable operation of safeguards system.The response time of wind energy turbine set dynamic reactive compensation device has been proposed to new requirement.According to relevant requirements, the wind energy turbine set dynamic reactive compensation device response time should be in 30 milliseconds, this just need to test the response time of dynamic reactive compensation device at the scene effectively truly, and field erected wind energy turbine set dynamic reactive compensation device is evaluated.Existing method of testing is to rely on dynamic reactive compensation device self to send out pulse to simulate manufacture disturbance, can not simulate the truth of disturbing source like this, existing proving installation can not detect the coordination and response waveform of dynamic reactive compensation device various piece all sidedly in addition, causes the first-hand sample information distortion to the test of the response time of dynamic reactive compensation device.
Summary of the invention
The invention provides a kind of dynamic reactive compensation device response wave shape pick-up unit and method of testing, solved the problem to the first-hand sample information distortion of the test of the response time of dynamic reactive compensation device that prior art exists.
The present invention overcomes the above problems by following scheme:
A kind of dynamic reactive compensation device response wave shape pick-up unit, comprise bus, dynamic reactive compensation device and oscillograph, on bus, be electrically connected with respectively the first current collection circuit, the second current collection circuit, transformer, dynamic reactive compensation device and voltage transformer (VT), between bus and the first current collection circuit, be provided with isolating switch, on the first current collection circuit, be provided with the first current collection line current mutual inductor, the secondary side A phase of the first current collection line current mutual inductor is electrically connected to the first current waveform input terminal of oscillograph, on the second current collection circuit, be provided with the second current collection line current mutual inductor, the secondary side A phase of the second current collection line current mutual inductor is electrically connected to the second current waveform input terminal of oscillograph, on the line between bus and dynamic reactive compensation device, be provided with reactive power compensator connection line current transformer, the secondary side A phase of reactive power compensator connection line current transformer is electrically connected to the 3rd current waveform input terminal of oscillograph, on transformer, be provided with step down side current transformer, the secondary side A phase of step down side current transformer is electrically connected to the 4th current waveform input terminal of oscillograph, the secondary side A phase of voltage transformer (VT) is electrically connected to the voltage waveform input terminal of oscillograph.
Four voltage waveform input terminals of oscillograph are connected in parallel.
A dynamic reactive compensation device response wave shape detection method, comprises the following steps:
The first step, to select the maximum current collection circuit of load be the first current collection circuit, then to select current collection circuits for other normal operations be the second current collection circuit;
Second step, between bus and the first current collection circuit, be provided with isolating switch, the first current collection line current mutual inductor is set on the first current collection circuit, the secondary side A phase of the first current collection line current mutual inductor is electrically connected to the first current waveform input terminal of oscillograph, the second current collection line current mutual inductor is set on the second current collection circuit, the secondary side A phase of the second current collection line current mutual inductor is electrically connected to the second current waveform input terminal of oscillograph, reactive power compensator connection line current transformer is set on the line between bus and dynamic reactive compensation device, the secondary side A phase of reactive power compensator connection line current transformer is electrically connected to the 3rd current waveform input terminal of oscillograph, step down side current transformer is set on transformer, the secondary side A phase of step down side current transformer is electrically connected to the 4th current waveform input terminal of oscillograph, voltage transformer (VT) is set on bus, the secondary side A phase of voltage transformer (VT) is electrically connected to the voltage waveform input terminal of oscillograph,
The 3rd step, the Sudden Changing Rate of electric current arranges oscillograph while disconnecting according to isolating switch on the first current collection circuit, and the record ripple time is set is 100 milliseconds;
The 4th step, with isolating switch, the first current collection circuit is cut off, start timing when cutting off, cross 2-3 minute startup oscillograph, complete the sampling of response current waveform and response voltage waveform.
The present invention has the meritorious disturbance of utilization and causes the fluctuation that voltage and current is idle, System Reactive Power disturbance that is virtually reality like reality, directly can record dynamic reactive compensation device, the interlock response wave shape of perception part and capacitive part, test accurately and reliably, is particularly suitable in the on-the-spot use of electrical network.
Accompanying drawing explanation
Fig. 1 is the structural representation of testing circuit of the present invention.
Embodiment
A kind of dynamic reactive compensation device response wave shape pick-up unit, comprise bus 1, dynamic reactive compensation device 7 and oscillograph 12, on bus 1, be electrically connected with respectively the first current collection circuit 2, the second current collection circuit 5, transformer 9, dynamic reactive compensation device 7 and voltage transformer (VT) 11, between bus 1 and the first current collection circuit 2, be provided with isolating switch 3, on the first current collection circuit 2, be provided with the first current collection line current mutual inductor 4, the secondary side A phase of the first current collection line current mutual inductor 4 is electrically connected to the first current waveform input terminal of oscillograph 12, on the second current collection circuit 5, be provided with the second current collection line current mutual inductor 6, the secondary side A phase of the second current collection line current mutual inductor 6 is electrically connected to the second current waveform input terminal of oscillograph 12, on the line between bus 1 and dynamic reactive compensation device 7, be provided with reactive power compensator connection line current transformer (8), the secondary side A phase of reactive power compensator connection line current transformer 8 is electrically connected to the 3rd current waveform input terminal of oscillograph 12, on transformer 9, be provided with step down side current transformer 10, the secondary side A phase of step down side current transformer 10 is electrically connected to the 4th current waveform input terminal of oscillograph 12, the secondary side A phase of voltage transformer (VT) 11 is electrically connected to the voltage waveform input terminal of oscillograph 12.
Four voltage waveform input terminals of oscillograph 12 are connected in parallel.
A dynamic reactive compensation device response wave shape method of testing, comprises the following steps:
The first step, to select the maximum current collection circuit of load be that the rated capacity of the first current collection circuit 2, the first current collection circuits 2 requires more than 80%, then to select current collection circuits for other normal operations be the second current collection circuit 5;
Second step, between bus 1 and the first current collection circuit 2, be provided with isolating switch 3, the first current collection line current mutual inductor 4 is set on the first current collection circuit 2, the secondary side A phase of the first current collection line current mutual inductor 4 is electrically connected to the first current waveform input terminal of oscillograph 12, the second current collection line current mutual inductor 6 is set on the second current collection circuit 5, the secondary side A phase of the second current collection line current mutual inductor 6 is electrically connected to the second current waveform input terminal of oscillograph 12, reactive power compensator connection line current transformer 8 is set on the line between bus 1 and dynamic reactive compensation device 7, the secondary side A phase of reactive power compensator connection line current transformer 8 is electrically connected to the 3rd current waveform input terminal of oscillograph 12, step down side current transformer 10 is set on transformer 9, the secondary side A phase of step down side current transformer 10 is electrically connected to the 4th current waveform input terminal of oscillograph 12, voltage transformer (VT) 11 is set on bus 1, the secondary side A phase of voltage transformer (VT) 11 is electrically connected to the voltage waveform input terminal of oscillograph 12,
The 3rd step, the Sudden Changing Rate of electric current arranges oscillograph 12 while being disconnected by isolating switch 3 according to the first current collection circuit 2 place current channels, and the record ripple time is set is 100 milliseconds;
The 4th step, use isolating switch 3 cut off the first current collection circuit 2, during from cut-out, start timing, cross 2-3 minute startup oscillograph 12, complete the sampling of response current waveform and response voltage waveform.
Select the voltage of access oscillograph 12 separate separate necessary consistent with electric current, be convenient to carry out the comparison of phase place and the calculating of power.
After checking that wiring is errorless, according to be disconnected the first current collection circuit 2, dynamic reactive compensation device 7 outlet, the electric current of the second current collection circuit 5 of normal operation, the voltage change ratio of the low-pressure side electric current of transformer 9 and access oscillograph 12 is arranged.
This device and method is that connection type is simple based on conventional electric energy quality test instrument or failure wave-recording instrument, and test result is intuitively accurate.
Claims (1)
1. a dynamic reactive compensation device response wave shape method of testing, comprises the following steps:
The first step, to select the maximum current collection circuit of load be the first current collection circuit (2), then to select current collection circuits for other normal operations be the second current collection circuit (5);
Second step, between bus (1) and the first current collection circuit (2), be provided with isolating switch (3), the first current collection line current mutual inductor (4) is set on the first current collection circuit (2), the secondary side A phase of the first current collection line current mutual inductor (4) is electrically connected to the first current waveform input terminal of oscillograph (12), the second current collection line current mutual inductor (6) is set on the second current collection circuit (5), the secondary side A phase of the second current collection line current mutual inductor (6) is electrically connected to the second current waveform input terminal of oscillograph (12), on the line between bus (1) and dynamic reactive compensation device (7), reactive power compensator connection line current transformer (8) is set, the secondary side A phase of reactive power compensator connection line current transformer (8) is electrically connected to the 3rd current waveform input terminal of oscillograph (12), step down side current transformer (10) is set on transformer (9), the secondary side A phase of step down side current transformer (10) is electrically connected to the 4th current waveform input terminal of oscillograph (12), voltage transformer (VT) (11) is set on bus (1), the secondary side A phase of voltage transformer (VT) (11) is electrically connected to the voltage waveform input terminal of oscillograph (12),
The 3rd step, the Sudden Changing Rate of electric current arranges oscillograph (12) while disconnecting according to isolating switch (3) on the first current collection circuit (2), and the record ripple time is set is 100 milliseconds;
The 4th step, use isolating switch (3) cut off the first current collection circuit (2), during from cut-out, start timing, cross 2-3 minute startup oscillograph (12), complete the sampling of response current waveform and response voltage waveform.
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| CN103592532B (en) * | 2013-10-21 | 2016-03-02 | 国家电网公司 | A kind of parameter detection method of wind energy turbine set Static Var Compensator and system |
| CN103592531B (en) * | 2013-10-21 | 2016-03-02 | 国家电网公司 | A kind of parameter detection method of wind energy turbine set static reacance generator and system |
| CN103698623A (en) * | 2013-11-07 | 2014-04-02 | 国家电网公司 | Method for measuring the response time of dynamic reactive power compensation device under united time scale |
| CN105866592B (en) * | 2016-05-18 | 2018-01-02 | 国网山西省电力公司电力科学研究院 | Dynamic passive compensation response wave shape acquisition system and acquisition method |
| CN106199286B (en) * | 2016-08-20 | 2019-01-11 | 国网山西省电力公司电力科学研究院 | Wind power plant dynamic reactive compensation device response speed test method |
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