CN103457224B - A kind of transmission line induced voltage suppression device based on impedance adjustment - Google Patents
A kind of transmission line induced voltage suppression device based on impedance adjustment Download PDFInfo
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Abstract
Invention describes a kind of transmission line induced voltage suppression device based on impedance adjustment, connected successively by voltage measurement module (1), automatic switchover disconnecting link (2), impedance module (3), current measurement module (4), current measurement module (4) output and voltage measurement module (1) output parallel impedance adjust the input of control system (5).The input of the output automatic switchover disconnecting link (2) of impedance adjustment control system (5).The input composition of the output termination impedance module (3) of air cooling system (6).This device: the impact that 1), automatically adjustment impedance magnitude eliminates different electric pressure, different model, different length transmission line induced voltage normally run DC de-icing device; 2), structure is simple, Maintenance free, and volume is little, cost is low; 3), without the need to manual switchover, personnel's Danger Electric shock risk is eliminated.
Description
Technical field
The invention belongs to electrical engineering technical field, relate to a kind of transmission line induced voltage suppression device based on impedance adjustment.
Background technology
From over 2008, for resisting the ice damage that transmission line meets with, China have developed the ice-melt that a large amount of DC de-icing devices drops into transmission line, to guarantee the safe and stable operation of electrical network.At present, the commutation technique that DC de-icing device adopts has uncontrollable diode rectification, controlled thyristor rectification.But because transmission line de-icing loop there is not ground connection, the DC de-icing device that the induced voltage that multiple-circuit on same tower produces causes cannot rectification.And eliminate the inhibitory effect of induced voltage to DC de-icing device commutating circuit, common way has two kinds: one same tower is total to the power failure completely of bar circuit to eliminate induced voltage, this measure is too large on operation of power networks impact, also has a strong impact on production and the life of the local masses.Another kind is the rectifier cell electric pressure promoting DC de-icing device commutating circuit, and this just makes deicing device cost double; And transmission line exists the problem of different electric pressures, model and length, this just more makes plant modification to realize.Cause domestic large quantities of DC de-icing device cannot put into operation because of this technical barrier.Therefore, for the anti-ice giving full play to DC de-icing device protects net effect, the transmission line induced voltage suppression device working out a kind of improvement has become a problem demanding prompt solution.
Summary of the invention
The technical problem to be solved in the present invention is, for the defect of prior art, design a kind of transmission line induced voltage suppression device based on impedance adjustment, can normally work when various electric pressure, wire type and different length line ice-melting to make DC de-icing device.
Technical scheme of the present invention is, designed a kind of transmission line induced voltage suppression device based on impedance adjustment, as shown in Figure 1, be made up of voltage measurement module 1, automatic switchover disconnecting link 2, impedance module 3, current measurement module 4, impedance adjustment control system 5 and air cooling system 6.Wherein said voltage measurement module 1, automatic switchover disconnecting link 2, impedance module 3, current measurement module 4 are sequentially connected in series.The input of the output termination automatic switchover disconnecting link 2 of described voltage measurement module 1; The output of this automatic switchover disconnecting link 2 connects the input of impedance module 3; And the output of this impedance module 3 connects the input of current measurement module 4.The output of this current measurement module 4 and another output of above-mentioned voltage measurement module 1 are connected in parallel the input that impedance adjusts control system 5.The output of this impedance adjustment control system 5 is then connected with another input of described automatic switchover disconnecting link 2.The output of described air cooling system 6 is also connected with another input of described impedance module 3.
Operation principle of the present invention is: when being used by a kind of transmission line induced voltage suppression device adjusted based on impedance formed above, be connected by the input of above-mentioned voltage measurement module 1 with transmission line wire.Namely voltage measurement module 1 implements the measurement to transmission line induced voltage size, according to measuring the data that obtain in addition after analytical error, transfer to impedance adjustment control system 5 by analyzing the automatic switchover disconnecting link 2 of error result through connecting successively, impedance module 3, the current measurement module 4 that obtain.Wherein the effect of automatic switchover disconnecting link 2 switches termination module by disconnecting link and realizes the adjustment of impedance magnitude.The effect of impedance module 3 eliminates induced voltage by serial connection to transmission line de-icing loop.The effect of current measurement module 4 is the size of measurement electric current and transfers to impedance adjustment control system by analyzing the error result obtained after analytical error.Impedance adjustment control system 5, then by the quantity that the analysis meter of measurement data calculates different electric pressure, different length, different conductor model need impedance module, controls automatic switchover switch operation.The effect of air cooling system 6 is coolings of impedance module 3, and its volume is little, Maintenance free.
The invention has the beneficial effects as follows:
1), adopting modularized design, by automatically adjusting impedance magnitude, eliminating different electric pressure, impact that different model, different length transmission line induced voltage normally run DC de-icing device;
2), adopt the air-cooled type of cooling, structure is simple, Maintenance free, and volume is little, cost is low;
3), adopt automatic switchover disconnecting link, without the need to manual switchover, eliminate personnel's Danger Electric shock risk.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of an a kind of transmission line induced voltage suppression device specific embodiment based on impedance adjustment of the present invention, is denoted as in figure:
1-voltage measurement module,
2-automatic switchover disconnecting link,
3-impedance module,
4-current measurement module,
5-impedance adjustment control system,
6-air cooling system.
Embodiment
This embodiment of a kind of transmission line induced voltage suppression device based on impedance adjustment of the present invention shown in Figure 1, the GDC-08 type voltage measurement module that its voltage measurement module 1 adopts Wuhan, China Guo electricity Zhong Neng Power Tech Corp. Inc. to produce; Automatic switchover disconnecting link 2 adopts Chinese Changsha Electrical Equipment Switch Co., Ltd. to produce DWHC-1.5 type switching disconnecting link; The KTZ-11 type impedance module that impedance module 3 adopts Hunan China province Xiang electricity Shi Yan Technology Co., Ltd. to produce; The HDC-10 type current measurement module that current measurement module 4 adopts Nanjing of China Zhong Xu Electronic Science and Technology Co., Ltd. to produce; The BLTZ-1.0 type impedance adjustment control system that impedance adjustment control system 5 adopts Hunan China province Xiang electricity Shi Yan Technology Co., Ltd. to produce; The FL-220 type wind-cooling heat dissipating system that air cooling system 6 adopts Hunan China province Xiang electricity Shi Yan Technology Co., Ltd. to produce.Described voltage measurement module 1, automatic switchover disconnecting link 2, impedance module 3, current measurement module 4, impedance adjustment control system 5 and air cooling system 6, by technique scheme, connect with reference to connected mode shown in accompanying drawing 1.Wherein voltage measurement module 1, automatic switchover disconnecting link 2, impedance module 3, current measurement module 4 are connected successively.The input of the output termination automatic switchover disconnecting link 2 of voltage measurement module 1; The input of the output termination impedance module 3 of automatic switchover disconnecting link 2; The input of the output termination current measurement module 4 of impedance module 3.The output of current measurement module 4 and another output of voltage measurement module 1 are connected in parallel the input that impedance adjusts control system 5.The impedance adjustment output of control system 5 is connected with another input of automatic switchover disconnecting link 2.The output of air cooling system 6 is connected with another input of impedance module 3.
The transmission line induced voltage suppression device that this example formed thus adjusts based on impedance,, Jiangxi Yingtan, Anhui red stone little at the Zhe-jiang sky over the river, the experiment of cloud field, Hunan use trial run to be proved to be respond well, safe and reliable, reach designing requirement completely, and use very convenient.
Claims (1)
1. the transmission line induced voltage suppression device based on impedance adjustment, it is characterized in that, it is by voltage measurement module (1), automatic switchover disconnecting link (2), impedance module (3), current measurement module (4), impedance adjustment control system (5) and air cooling system (6) composition, wherein said voltage measurement module (1), automatic switchover disconnecting link (2), impedance module (3), current measurement module (4) is sequentially connected in series, the input of output termination automatic switchover disconnecting link (2) of described voltage measurement module (1), the output of this automatic switchover disconnecting link (2) connects the input of impedance module (3), and the output of this impedance module (3) connects the input of current measurement module (4), the output of this current measurement module (4) and another output of above-mentioned voltage measurement module (1) are connected in parallel the input that impedance adjusts control system (5), the output of this impedance adjustment control system (5) is then connected with another input of described automatic switchover disconnecting link (2), and the output of described air cooling system (6) is connected with another input of described impedance module (3).
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| CN201310403500.5A CN103457224B (en) | 2013-09-06 | 2013-09-06 | A kind of transmission line induced voltage suppression device based on impedance adjustment |
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| CN201310403500.5A CN103457224B (en) | 2013-09-06 | 2013-09-06 | A kind of transmission line induced voltage suppression device based on impedance adjustment |
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| CN103457224B true CN103457224B (en) | 2016-01-20 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5619079A (en) * | 1995-07-28 | 1997-04-08 | The United States Of America As Represented By The Secretary Of The Navy | EMI line filter |
| CN101436768A (en) * | 2008-07-30 | 2009-05-20 | 湖南省电力公司试验研究院 | Power line DC ice-melting device |
| CN101669154A (en) * | 2007-02-16 | 2010-03-10 | 阿尔德里奇交通控制器私人有限公司 | The induced voltage suppressor that is used for traffic signal control |
| CN101697430A (en) * | 2009-11-12 | 2010-04-21 | 上海交通大学 | Power control method based CT electricity getting device of high voltage transmission line |
| CN202084928U (en) * | 2011-06-10 | 2011-12-21 | 上海雷诺尔电力自动化有限公司 | Hybrid compensation filtering cabinet |
| CN202870208U (en) * | 2012-10-18 | 2013-04-10 | 嘉兴电力局 | Anti-induction voltage power transmission line power frequency parameter testing auxiliary apparatus |
| CN203406613U (en) * | 2013-09-06 | 2014-01-22 | 国家电网公司 | Power transmission line induction voltage restraint device based on impedance adjustment |
-
2013
- 2013-09-06 CN CN201310403500.5A patent/CN103457224B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5619079A (en) * | 1995-07-28 | 1997-04-08 | The United States Of America As Represented By The Secretary Of The Navy | EMI line filter |
| CN101669154A (en) * | 2007-02-16 | 2010-03-10 | 阿尔德里奇交通控制器私人有限公司 | The induced voltage suppressor that is used for traffic signal control |
| CN101436768A (en) * | 2008-07-30 | 2009-05-20 | 湖南省电力公司试验研究院 | Power line DC ice-melting device |
| CN101697430A (en) * | 2009-11-12 | 2010-04-21 | 上海交通大学 | Power control method based CT electricity getting device of high voltage transmission line |
| CN202084928U (en) * | 2011-06-10 | 2011-12-21 | 上海雷诺尔电力自动化有限公司 | Hybrid compensation filtering cabinet |
| CN202870208U (en) * | 2012-10-18 | 2013-04-10 | 嘉兴电力局 | Anti-induction voltage power transmission line power frequency parameter testing auxiliary apparatus |
| CN203406613U (en) * | 2013-09-06 | 2014-01-22 | 国家电网公司 | Power transmission line induction voltage restraint device based on impedance adjustment |
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| CN103457224A (en) | 2013-12-18 |
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