CN102025360A - High-voltage thyristor valve string triggered energy gaining circuit device - Google Patents
High-voltage thyristor valve string triggered energy gaining circuit device Download PDFInfo
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- CN102025360A CN102025360A CN2009102722482A CN200910272248A CN102025360A CN 102025360 A CN102025360 A CN 102025360A CN 2009102722482 A CN2009102722482 A CN 2009102722482A CN 200910272248 A CN200910272248 A CN 200910272248A CN 102025360 A CN102025360 A CN 102025360A
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Abstract
The invention relates to a high-voltage thyristor valve string triggered energy gaining circuit device and belongs to the technical field of power electronics. The invention mainly solves the problems of large volume, high process requirement, a large number of high-voltage cables used by each phase, high interference, severe corona effect and the like in the traditional high-voltage straight-through current transformer energy gaining mode. The device comprises low-voltage current transformers, trigger circuit boards electrically connected with thyristors, and a low-voltage single-phase transformer; the current transformers and the trigger circuits are integrated into a whole and then arranged on the side of a corresponding thyristor; all current transformers are connected in series with the primary sides through a high-voltage cable and then are connected with the secondary side of the low-voltage single-phase transformer; and the primary side of the transformer is connected with a low-voltage single-phase power supply. A low-voltage power supply is effectively coupled to various trigger circuits through only one high-voltage cable, and good voltage isolation is achieved between the low-voltage power supply and the high-voltage cable; the volume of the current transformer can be reduced by the method; the installation process is simple; the number of high-voltage cables is small; and the mutual interference and corona can be effectively eliminated.
Description
Technical field
Type of the present invention belongs to electric and electronic technical field, is applied to the triggering energy taking device of high-pressure thyristor valve string specifically
Background technology
At present, the getting of triggering system that is applied in high-pressure system mesohigh thyristor valve string can mode generally adopt the high voltage through type current transformer to get the energy mode.This mode is that low-voltage power supply and high pressure triggering are kept apart by electromagnetic coupled, gets the energy problem to solve high-low pressure.Its concrete mode is that the high voltage through type current transformer adopts concentrated being positioned on the cabinet body frame, and a high-tension cable passes all current transformers and is connected with a low-tension transformer secondary, and the former limit of transformer is AC220V, and secondary is linked in triggering system.But the problem brought of mode is a lot of thus: (1) takes high-tension current inductor, and its volume is big, the technological requirement height; (2) current transformer is every mutually much and longer to the triggering system service cable, and is high-tension cable, has increased the system risk that system cost and cable failure are brought; (3) current transformer is distributed in the cabinet to the triggering system service cable, and distributed capacitance and the coupled signal that brings thereof are bigger to the interference of triggering system; (4) system's voltage-withstand test process, current transformer has very strong corona phenomenon over the ground to triggering system service cable and current transformer itself, adopts to improve voltage withstand class or improve wiring topology all can not well address this problem.
Summary of the invention
The objective of the invention is at a plurality of supporting deficiencies of getting the energy mode of conventional high-tension straight-through current transformer, and a kind of volume that provides is little, installation is simple, and efficient height, the low pressure straight-through current transformer that cost is low become to extract the high-pressure thyristor valve string triggering of energy mode and get the energy circuit arrangement.
Technical solution of the present invention is: the high-pressure thyristor valve string triggers to be got and can comprise low pressure single phase poaer supply transformer, one group of current transformer and the circuits for triggering plate that is electrically connected with brilliant valve pipe by circuit arrangement, it is characterized in that: be installed in corresponding thyristor side after current transformer and circuits for triggering plate are integrated; The former limit of all current transformers is connected the single-phase low-tension supply of former edge joint of transformer by a high-tension cable series connection back with single phase poaer supply transformer secondary.
Current transformer described in the technical solution of the present invention is the low pressure straight-through current transformer.
Distance between integrated back of low-voltage current mutual inductor described in the technical solution of the present invention and circuits for triggering plate and the corresponding thyristor is installed on the insulation board less than 80 millimeters.
The present invention adopts a high-tension cable can effectively low-tension supply be coupled to each circuits for triggering, and good voltage isolation is arranged each other, its advantage is: 1, utilize low-voltage current mutual inductor to carry out high pressure and get energy, make get can the loop apparatus volume little, install simple, the efficient height, cost reduces; 2, get and can place nearby with corresponding circuits for triggering plate by instrument transformer, both connecting lines are very short, and fail safe improves greatly; 3, get and to place nearby with corresponding circuits for triggering plate, thyristor by instrument transformer, improved the integrated level of product, shortened the wiring length of high voltage control cable greatly, improved the reliability of whole device.
Description of drawings
Fig. 1 is that energy circuit arrangement electrical schematic diagram is got in high-pressure thyristor valve string triggering of the present invention
Fig. 2 is that energy circuit arrangement structural representation is got in high-pressure thyristor valve string triggering of the present invention
Fig. 3 is that energy circuit arrangement structure side diagrammatic sketch is got in high-pressure thyristor valve string triggering of the present invention
Embodiment
As shown in Figure 1, thyristor valve string is divided into three-phase, whenever is made up of many groups anti-parallel thyristor 8, and every group of thyristor 8 be supporting a circuits for triggering plate 5 and low-voltage current mutual inductor 3, all is placed on the insulation board 1; Low-voltage current mutual inductor 3 adopts the low pressure straight-through current transformer, circuits for triggering plate (5) is connected the side that is installed in thyristor 8 after integrated with the secondary of current transformer 3 by connecting line 4, promptly the distance between corresponding thyristor 8 is installed on the insulation board 1 less than 80 millimeters, because current transformer 3 and circuits for triggering plate 5 are placed nearby, connecting line 4 between current transformer 3 secondary and the circuits for triggering plate 5 is very short, has guaranteed the reliability of device; Current transformer 3 adopts the former limit series connection of the mode of punching with all current transformers 3 of three-phase by a single-core high-voltage cable 2, cable 2 two ends are connected with the secondary closure of the low-voltage, high-current transformer of placing separately 6, and transformer 6 former limits connect single-phase low-tension supply; Circuits for triggering plate 5 is electrically connected with thyristor, therefore when the valve string work, its with high-tension electricity can be incorporated on the circuits for triggering plate 5, be electrically connected owing to current transformer 3 and circuits for triggering plate 5 equally, current transformer 3 also can have high potential; High-tension cable 2 is connected with low-tension transformer 6, therefore cable 2 inside are low pressure energized circuits, whole withstand voltage insulation of getting energy is determined by high-tension cable 2, during actual type selecting as long as at different electric pressure valve string systems, select corresponding voltage withstand class cable to get final product, the model of selecting as the 10KV high-tension cable is JGG-35/10.
Fig. 2 is a structure scheme of installation of the present invention, all get and can connect on current transformer 3 former limits a single-core high-voltage cable 2 with three-phase by the punching mode, cable 2 two ends are connected with the secondary of the low-tension transformer of placing separately 6, and transformer 6 former limits are connected with single-phase low-tension supply.
Fig. 3 is a structure installation side diagrammatic sketch of the present invention, and the high-pressure thyristor valve string triggers gets the two ends that the energy circuit arrangement is connected the thyristor 8 that is fixed on the thyristor fixed head 7.
Claims (3)
1. a high-pressure thyristor valve string triggers and gets the energy circuit arrangement, comprise low pressure single phase poaer supply transformer (6), one group of current transformer (3) and with the circuits for triggering plate (5) that brilliant valve pipe is electrically connected, it is characterized in that: current transformer (3) is installed in corresponding thyristor side with circuits for triggering plate (5) after integrated; The former limit of all current transformers (3) is connected the single-phase low-tension supply of former edge joint of transformer (6) by a high-tension cable (2) series connection back with single phase poaer supply transformer (6) secondary.
2. high-pressure thyristor valve string as claimed in claim 1 triggers gets the energy circuit arrangement, it is characterized in that described current transformer (3) is the low pressure straight-through current transformer.
3. high-pressure thyristor valve string as claimed in claim 1 or 2 triggers gets the energy circuit arrangement, it is characterized in that the distance between integrated back of described low-voltage current mutual inductor (3) and circuits for triggering plate (5) and the corresponding thyristor (8) is installed on the insulation board (1) less than 80 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102722482A CN102025360A (en) | 2009-09-22 | 2009-09-22 | High-voltage thyristor valve string triggered energy gaining circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102722482A CN102025360A (en) | 2009-09-22 | 2009-09-22 | High-voltage thyristor valve string triggered energy gaining circuit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102025360A true CN102025360A (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102722482A Pending CN102025360A (en) | 2009-09-22 | 2009-09-22 | High-voltage thyristor valve string triggered energy gaining circuit device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377253A (en) * | 2011-11-14 | 2012-03-14 | 湖北三环发展股份有限公司 | Energy acquiring and electromagnetic triggering system of high-voltage thyristor valve bank |
| CN102931664A (en) * | 2012-10-26 | 2013-02-13 | 株洲变流技术国家工程研究中心有限公司 | Chain type SVG (static var generator) device low-pressure power supply system |
| CN103683533A (en) * | 2013-11-27 | 2014-03-26 | 国家电网公司 | Long-distance magnetic-circuit power transmission system |
| CN109378907A (en) * | 2018-11-27 | 2019-02-22 | 国网辽宁省电力有限公司经济技术研究院 | High potential isolated power supply in semiconductor high pressure valve application circuit |
-
2009
- 2009-09-22 CN CN2009102722482A patent/CN102025360A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377253A (en) * | 2011-11-14 | 2012-03-14 | 湖北三环发展股份有限公司 | Energy acquiring and electromagnetic triggering system of high-voltage thyristor valve bank |
| CN102931664A (en) * | 2012-10-26 | 2013-02-13 | 株洲变流技术国家工程研究中心有限公司 | Chain type SVG (static var generator) device low-pressure power supply system |
| CN102931664B (en) * | 2012-10-26 | 2015-07-22 | 株洲变流技术国家工程研究中心有限公司 | Chain type SVG (static var generator) device low-pressure power supply system |
| CN103683533A (en) * | 2013-11-27 | 2014-03-26 | 国家电网公司 | Long-distance magnetic-circuit power transmission system |
| CN109378907A (en) * | 2018-11-27 | 2019-02-22 | 国网辽宁省电力有限公司经济技术研究院 | High potential isolated power supply in semiconductor high pressure valve application circuit |
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Application publication date: 20110420 |