CN206387898U - A kind of DC voltage transformer transient response checked for characteristics device - Google Patents

A kind of DC voltage transformer transient response checked for characteristics device Download PDF

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Publication number
CN206387898U
CN206387898U CN201621365486.XU CN201621365486U CN206387898U CN 206387898 U CN206387898 U CN 206387898U CN 201621365486 U CN201621365486 U CN 201621365486U CN 206387898 U CN206387898 U CN 206387898U
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voltage
collector
main controller
signal
transient response
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Inventor
朱梦梦
何兆磊
朱全聪
翟少磊
刘清蝉
罗强
林聪�
田鑫萃
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Electric Power Research Institute of Yunnan Power System Ltd
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Electric Power Research Institute of Yunnan Power System Ltd
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Abstract

The utility model discloses a kind of DC voltage transformer transient response checked for characteristics device, normal voltage input interface connection normal voltage divider obtains the voltage signal of normal voltage divider;Stream voltage transformer is aligned by the connection of school control source interface, the voltage signal for being aligned stream voltage transformer is obtained;Analog voltage signal collector and digital voltage signal collector in voltage collector gather analog signal and data signal respectively;Voltage signal is sent to main controller again;The detection, the comparison of rise time and voltage error for carrying out step response to the voltage signal of acquisition by the voltage step detector in main controller, timing comparator and voltage comparator are calculated, and are finally obtained a result.Finally the result of timing comparator and the result of voltage comparator are shown over the display.The device that the utility model is provided realizes the test to the transient response characteristic of DC voltage transformer, improves the ability of DC voltage transformer field test.

Description

A kind of DC voltage transformer transient response checked for characteristics device
Technical field
The utility model is related to DC voltage transformer technical field, and more particularly to a kind of DC voltage transformer transient state is rung Answer checked for characteristics device.
Background technology
Voltage transformer and transformer are very alike, are all the voltage on conversion line.But transformer voltage of transformation Purpose be that, in order to convey electric energy, therefore capacity is very big, be typically all using kilovolt-ampere or megavolt-ampere as unit of account;And voltage is mutual The purpose of sensor voltage of transformation, is primarily used to power to measuring instrumentss and protective relaying device, for the voltage of measurement circuitry, Power and electric energy, or for the expensive equipment in the protection circuit in line failure, motor and transformer, therefore voltage The capacity very little of transformer, typically all only has several volt-amperes, tens volt-amperes, maximum is also no more than one kilovolt-ampere.
Voltage transformer be high voltage in proportion relation transformation into the mutual of 100V or the standard secondary voltage of more inferior grade Sensor, the standard secondary voltage after conversion is used for protection, metering and metering device.Meanwhile, can be by using voltage transformer High voltage is isolated with electrician.Secondary Circuit of Potential Transformer is high impedance loop, and the size of secondary current is by loop Impedance determine.When secondary load impedence reduces, secondary current increase so that primary current is automatically increased one-component to expire Electromagnetic balance relation between sufficient primary side and secondary side.It is defined structure it can be said that voltage transformer is one and uses shape The special transformer of formula, it must have good transient response characteristic, it is ensured that measurement accuracy meets HVDC transmission system Control the requirement of protection.
But, the relay protection for DC voltage transformer is usually and carried out in type approval test at present, and without special Transient characterisitics test pill and transient state tester.And the relay protection of In situ DC voltage transformer lacking due to equipment and code Weary, each present DianKeYuan does not all carry out this business.
Utility model content
The purpose of this utility model is to provide a kind of DC voltage transformer transient response checked for characteristics device, improved directly Flow the ability of voltage transformer field test.
According to embodiment of the present utility model there is provided a kind of DC voltage transformer transient response checked for characteristics device, Including:Normal voltage input interface, by school control source interface, voltage collector and main controller;
The main controller includes:Voltage step detector, timing comparator and voltage comparator;
The voltage step detector is connected with the timing comparator;
The voltage step detector is connected with the voltage collector;
The voltage comparator is connected with the voltage collector;
The normal voltage input interface and described it is connected respectively with the voltage collector by school control source interface.
Preferably, the voltage collector includes:Analog voltage signal collector and digital voltage signal collector;
The analog voltage signal collector is connected with the main controller;
The digital voltage signal collector is connected with the main controller.
Preferably, the analog voltage signal collector includes:High precision electro pressure sensor and analog-digital converter;
The high precision electro pressure sensor, the analog-digital converter and the main controller are sequentially connected in series.
Preferably, described device also includes:Clock synchronizer;
The clock synchronizer connects with the main controller, the analog-digital converter and digital voltage signal collector respectively Connect.
Preferably, the clock synchronizer is connected with the DC voltage transformer.
Preferably, described device also includes:Display;
The display is connected with the main controller.
From above technical scheme, the utility model provides a kind of DC voltage transformer transient response checked for characteristics dress Put, including:Normal voltage input interface, by school control source interface, voltage collector and main controller;The main controller includes: Voltage step detector, timing comparator and voltage comparator;In use, by voltage collector respectively from standard DC voltage point Depressor and be aligned stream voltage transformer obtain voltage signal, be sent to main controller, by the voltage step detector in main controller, Timing comparator and voltage comparator carry out detection, the comparison of rise time and the voltage of step response to the voltage signal of acquisition Error calculation, finally obtains a result.The device that the utility model is provided realizes the transient response characteristic to DC voltage transformer Test, improve DC voltage transformer field test ability.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only of the present utility model Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is to be illustrated according to a DC voltage transformer transient response checked for characteristics apparatus structure for being preferable to carry out exemplifying Figure;
Fig. 2 is to be preferable to carry out the structural representation of main controller that exemplifies according to one;
Fig. 3 is to be preferable to carry out the structural representation of voltage collector that exemplifies according to one;
Fig. 4 is to be preferable to carry out the structural representation of analog voltage signal collector that exemplifies according to one.
Illustrate:
Wherein:1- normal voltage input interfaces;2- is by school control source interface;3- voltage collectors;4- main controllers;5- moulds Intend voltage signal collector;6- digital voltage signal collectors;7- high precision electro pressure sensors;8- analog-digital converters;9- voltages Step detector;10- timing comparators;11- voltage comparators;12- clock synchronizers;13- displays.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clear, complete description, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belongs to the scope of the utility model protection.
As shown in figure 1, the utility model provides a kind of DC voltage transformer transient response checked for characteristics device, including: Normal voltage input interface 1, by school control source interface 2, voltage collector 3 and main controller 4;
As shown in Fig. 2 the main controller 4 includes:Voltage step detector 9, timing comparator 10 and voltage comparator 11;
The voltage step detector 9 is connected with the timing comparator 10;
The voltage step detector 9 is connected with the voltage collector 3;
The voltage comparator 11 is connected with the voltage collector 3;
The normal voltage input interface 1 and described connected respectively with the voltage collector 3 by school control source interface 2 Connect.
The normal voltage input interface 1 connects normal voltage divider, obtains the voltage signal of normal voltage divider; It is described that stream voltage transformer is aligned by the connection of school control source interface 2, obtain the voltage signal for being aligned stream voltage transformer; The collection voltages signal of voltage collector 3 and make after corresponding processing, the voltage signal after processing is sent to main controller 4; The step response of the voltage signal after the 9 pairs of processing of voltage step detector in main controller 4 is detected, obtains the rise time; The rise time detected is compared by timing comparator 10 with the default standard time, obtains a result;Voltage comparator 11 Error calculation directly is carried out to voltage signal, obtained a result.
From above technical scheme, the utility model provides a kind of DC voltage transformer transient response checked for characteristics dress Put, including:Normal voltage input interface 1, by school control source interface 2, voltage collector 3 and main controller 4;The main controller 4 Including:Voltage step detector 9, timing comparator 10 and voltage comparator 11;In use, by voltage collector 3 respectively from mark Quasi- DC voltage divider obtains voltage signal with stream voltage transformer is aligned, and main controller 4 is sent to, in main controller 4 The detection for the voltage signal progress step response that 11 pairs of voltage step detector 9, timing comparator 10 and voltage comparator are obtained, The comparison of rise time and voltage error are calculated, and are finally obtained a result.The device that the utility model is provided is realized to DC voltage The test of the transient response characteristic of transformer, improves the ability of DC voltage transformer field test.
Further, as shown in figure 3, the voltage collector 3 includes:Analog voltage signal collector 5 and digital voltage Signal picker 6;The analog voltage signal collector 5 is connected with the main controller 4;The digital voltage signal collector 6 It is connected with the main controller 4.Because the voltage signal obtained from normal voltage input interface 1 is analog signal, so voltage is adopted In storage 3 analog voltage signal collector 5 should be set to be acquired analog signal;Due to being obtained from by school control source interface 2 The voltage taken is data signal, so in voltage collector 3 digital voltage signal collector 6 should be set to adopt data signal Collection;The voltage signal after collection is sent to the processing that main controller 4 carries out next step again, makes DC voltage transformer transient response The use of checked for characteristics device is more prone to realize.
Further, as shown in figure 4, the analog voltage signal collector 5 includes:High precision electro pressure sensor 7 and mould Number converter 8;The high precision electro pressure sensor 7, the analog-digital converter 8 and the main controller 4 are sequentially connected in series.Due to simulation What voltage signal collector 5 was gathered is analog signal, and what digital voltage signal collector 6 was gathered is data signal, analog signal It is sent in main controller 4 and can not be together handled with data signal, it is necessary to analog signal before main controller 4 is sent to Handled;Analog voltage signal is gathered out by high precision electro pressure sensor 7, analog-digital converter 8 to analog signal at Reason, is converted analog signals into after data signal, then the data signal gathered with digital voltage signal collector 6 is together transmitted To main controller 4, main controller 4 is facilitated to carry out the processing of next step, further, high precision electro pressure sensor 7 will can be simulated Voltage signal is converted to small voltage signal, it is ensured that the accuracy of the voltage signal of normal voltage divider.
Further, as shown in figure 1, described device also includes:Clock synchronizer 12;The clock synchronizer 12 respectively with The main controller 4, the analog-digital converter 8 and digital voltage signal collector 6 are connected.Analog voltage signal collector 5 is to mould Intend signal be acquired and digital voltage signal collector 6 be to the process that data signal is acquired it is synchronous, i.e., each time The analog signal and data signal of collection are corresponding, set clock synchronizer 12, are consistent to ensure to gather the moment, Ensure the correctness of DC voltage transformer transient response checked for characteristics device detection.
Further, the clock synchronizer 12 is also connected with the DC voltage transformer.Will during due to collection signal Ensure that the collection moment is consistent, so clock synchronizer 12 is connected on tested DC voltage transformer, synchronizing signal is transmitted To tested DC voltage transformer, it is ensured that the data signal of collection and the analog signal from the collection of standard DC voltage divider Gather the moment consistent, it is ensured that data signal is corresponding with analog signal, ensure DC voltage transformer transient response checked for characteristics The correctness of device detection.
Further, as shown in figure 1, described device also includes:Display 13;The display 13 and the main controller 4 Connection.Normal voltage input interface 1 connects normal voltage divider, obtains the voltage signal of normal voltage divider;The quilt The connection of school control source interface 2 is aligned stream voltage transformer, obtains the voltage signal for being aligned stream voltage transformer;Voltage is adopted The collection voltages signal of storage 3 and make after corresponding processing, voltage signal is sent to main controller 4;Voltage in main controller 4 Step detector 9 is detected to the step response of voltage signal, obtains the rise time;Timing comparator 10 is upper by what is detected The time of liter is compared with the default standard time, obtains a result;Voltage comparator 11 directly carries out error meter to voltage signal Calculate, obtain a result.Finally the result of timing comparator 10 and the result of voltage comparator 11 are shown on the monitor 13, The result for detecting DC voltage transformer transient response checked for characteristics device is more directly perceived.
Further, operation interface is additionally provided with the display 13, is used for man-machine interaction, make DC voltage transformer The use of transient response checked for characteristics device is simpler quick.
Further, the main controller 4 can also carry out the drafting of waveform, drawn waveform to the voltage signal collected Afterwards, waveform is analyzed, ultimately generates report;Main controller 4 also has the recording function of high-speed sampling, makes DC voltage mutual inductance Device transient response checked for characteristics device has more exploitativeness.
From above technical scheme, the utility model provides a kind of DC voltage transformer transient response checked for characteristics dress Put, in use, normal voltage input interface 1 connects normal voltage divider, obtain the voltage signal of normal voltage divider;Institute State and stream voltage transformer is aligned by the connection of school control source interface 2, obtain the voltage signal for being aligned stream voltage transformer;Electricity Analog voltage signal collector 5 in pressure collector 3 is acquired to analog signal;Digital voltage letter in voltage collector 3 Number collector 6 is acquired to data signal;The voltage signal after collection is sent to the place that main controller 4 carries out next step again Reason;Voltage step detector 9 in main controller 4 is detected to the step response of voltage signal, obtains the rise time;Timing ratio The rise time detected is compared with the default standard time compared with device 10, obtained a result;Voltage comparator 11 is directly right Voltage signal carries out error calculation, obtains a result.Finally the result of the result of timing comparator 10 and voltage comparator 11 is existed Shown on display 13.The device that the utility model is provided realizes the survey to the transient response characteristic of DC voltage transformer Examination, improves the ability of DC voltage transformer field test.
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice utility model disclosed herein New other embodiments.The application is intended to any modification of the present utility model, purposes or adaptations, these Modification, purposes or adaptations follow general principle of the present utility model and including undocumented skill of the utility model Common knowledge or conventional techniques in art field.Description and embodiments be considered only as it is exemplary, it is of the present utility model True scope and spirit are pointed out by following claim.
It should be appreciated that the accurate knot that the utility model is not limited to be described above and is shown in the drawings Structure, and various modifications and changes can be being carried out without departing from the scope.Scope of the present utility model only will by appended right Ask to limit.

Claims (6)

1. a kind of DC voltage transformer transient response checked for characteristics device, it is characterised in that including:Normal voltage input interface (1), by school control source interface (2), voltage collector (3) and main controller (4);
The main controller (4) includes:Voltage step detector (9), timing comparator (10) and voltage comparator (11);
The voltage step detector (9) is connected with the timing comparator (10);
The voltage step detector (9) is connected with the voltage collector (3);
The voltage comparator (11) is connected with the voltage collector (3);
The normal voltage input interface (1) and it is described by school control source interface (2) respectively with the voltage collector (3) even Connect.
2. a kind of DC voltage transformer transient response checked for characteristics device according to claim 1, it is characterised in that institute Stating voltage collector (3) includes:Analog voltage signal collector (5) and digital voltage signal collector (6);
The analog voltage signal collector (5) is connected with the main controller (4);
The digital voltage signal collector (6) is connected with the main controller (4).
3. a kind of DC voltage transformer transient response checked for characteristics device according to claim 2, it is characterised in that institute Stating analog voltage signal collector (5) includes:High precision electro pressure sensor (7) and analog-digital converter (8);
The high precision electro pressure sensor (7), the analog-digital converter (8) and the main controller (4) are sequentially connected in series.
4. a kind of DC voltage transformer transient response checked for characteristics device according to claim 3, it is characterised in that institute Stating device also includes:Clock synchronizer (12);
The clock synchronizer (12) respectively with the main controller (4), the analog-digital converter (8) and the digital voltage signal Collector (6) is connected.
5. a kind of DC voltage transformer transient response checked for characteristics device according to claim 4, it is characterised in that institute Clock synchronizer (12) is stated to be connected with the DC voltage transformer.
6. a kind of DC voltage transformer transient response checked for characteristics device according to claim 1, it is characterised in that institute Stating device also includes:Display (13);
The display (13) is connected with the main controller (4).
CN201621365486.XU 2016-12-13 2016-12-13 A kind of DC voltage transformer transient response checked for characteristics device Active CN206387898U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107369544A (en) * 2017-09-04 2017-11-21 云南电网有限责任公司电力科学研究院 A kind of GIS formulas of band electromagnetic shielding are from the standard potential transformer that boosts
CN107422212A (en) * 2017-08-23 2017-12-01 国网电力科学研究院武汉南瑞有限责任公司 A kind of electronic direct current transformer transient characterisitics experimental rig and control method
CN107589390A (en) * 2017-10-25 2018-01-16 国家电网公司 A kind of aobvious control implementation method of DC electronic transformer step response test system
CN110161446A (en) * 2019-04-25 2019-08-23 国网电力科学研究院武汉南瑞有限责任公司 Relay protection device for high-voltage dc voltage mutual inductor
CN111025219A (en) * 2019-11-29 2020-04-17 中国电力科学研究院有限公司 Device and method for testing transient response of direct-current voltage transformer
CN111239666A (en) * 2020-02-07 2020-06-05 云南电网有限责任公司电力科学研究院 Transient characteristic test system of far-end module box
CN113267743A (en) * 2021-06-30 2021-08-17 广东电网有限责任公司 Method and instrument for checking DC voltage transformer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107422212A (en) * 2017-08-23 2017-12-01 国网电力科学研究院武汉南瑞有限责任公司 A kind of electronic direct current transformer transient characterisitics experimental rig and control method
CN107422212B (en) * 2017-08-23 2023-08-08 国网电力科学研究院武汉南瑞有限责任公司 Transient characteristic test device and control method for electronic direct current transformer
CN107369544A (en) * 2017-09-04 2017-11-21 云南电网有限责任公司电力科学研究院 A kind of GIS formulas of band electromagnetic shielding are from the standard potential transformer that boosts
CN107369544B (en) * 2017-09-04 2023-09-15 云南电网有限责任公司电力科学研究院 GIS type self-boosting standard voltage transformer with electromagnetic shielding
CN107589390A (en) * 2017-10-25 2018-01-16 国家电网公司 A kind of aobvious control implementation method of DC electronic transformer step response test system
CN110161446A (en) * 2019-04-25 2019-08-23 国网电力科学研究院武汉南瑞有限责任公司 Relay protection device for high-voltage dc voltage mutual inductor
CN111025219A (en) * 2019-11-29 2020-04-17 中国电力科学研究院有限公司 Device and method for testing transient response of direct-current voltage transformer
CN111239666A (en) * 2020-02-07 2020-06-05 云南电网有限责任公司电力科学研究院 Transient characteristic test system of far-end module box
CN113267743A (en) * 2021-06-30 2021-08-17 广东电网有限责任公司 Method and instrument for checking DC voltage transformer

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