CN203734382U - High voltage CT self-power hardware platform - Google Patents
High voltage CT self-power hardware platform Download PDFInfo
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- CN203734382U CN203734382U CN201320806941.5U CN201320806941U CN203734382U CN 203734382 U CN203734382 U CN 203734382U CN 201320806941 U CN201320806941 U CN 201320806941U CN 203734382 U CN203734382 U CN 203734382U
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- protective circuit
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Abstract
The utility model discloses a high voltage CT self-power hardware platform. High voltage CT self-power utilizes the electromagnetic induction principle. An energy taking coil induces an AC voltage from a high voltage bus or a line, and supplies power for n electronic circuit at the high voltage side via a rectification circuit, a filter circuit and a DC/DC voltage stabilizing circuit. In order to allow the system to provide a stable voltage output and a large power application within the short zero load time period of the high voltage bus, the platform is additionally provided with a super capacitor. The power supply output of the super capacitor is connected to an electric power user or an electric part. A pre-stage protective circuit and a post-stage protective circuit utilize TVS tubes. The specifications of the super capacitor are 5 V and 10 F. The pre-stage protective circuit and the post-stage protective circuit utilize TVS tubes, so that discharging speed is higher, and more reliable protection and low cost are achieved. The high efficiency DC/DC module is used for reducing electric energy loss in a power supply circuit and then reducing a starting current.
Description
Technical field
The utility model relates to a kind of hardware unit for high-side devices power supply, is specifically related to a kind of for the self-powered hardware unit of high pressure CT.
Background technology
High-pressure side measuring system powerup issue is a difficult point of current power engineering, obtains power supply stable, reliable, low-power consumption and has very important realistic meaning.Existing high-side devices supply power mode is mainly dividing potential drop electric capacity power taking method and laser energy supply method.
Dividing potential drop electric capacity power taking method utilizes high-voltage conducting wires and grading ring and grading ring distributed capacitance over the ground to obtain electric weight.This kind of method not only needs to isolate power-supply circuit and follow-up work circuit, humiture, and the various factorss such as stray capacitance also can affect the performance of electricity getting device.And the method power output is limited.
Laser energy supply method mainly utilizes optical fiber that luminous energy is sent to high-pressure side from earth terminal, then is electric energy by photoconverter by transform light energy.The method is difficult to be applied on the electricity getting device of long-term field work.The shortcomings such as photoconverter efficiency is low, the life-span is short also can hinder its application in electric power system.
Utility model content
For the above problem of power supply of high-pressure side measuring system, of the present utility modelly provide a kind of self-power supply device based on high pressure CT.High pressure CT confession electrical method utilizes instrument transformer principle that the power conversion on part high-voltage conducting wires is become to electric energy output, and power supply can provide stable output within the scope of wire normal current, can self-protection under short circuit and impulse current, can long-term work, and energy consumption is low.Through operation examination on site, the self-power supply device of this high pressure CT is stable and reliable for performance, can effectively solve the power issue of high-pressure side active electronic equipment.
For reaching above-mentioned purpose, the technical scheme that the utility model adopts is:
A kind of high pressure CT self-powered hardware platform, comprises and gets energy CT(open C T) and CT power taking box, described CT power taking box comprises prime protective circuit, rectification circuit, filter circuit, rear class protective circuit, DC/DC voltage stabilizing circuit, ultracapacitor.
Being somebody's turn to do the self-power supply device based on high pressure CT, utilizing electromagnetic induction principle, can respond to alternating voltage from high voltage bus or circuit by coil by getting, then pass through rectification circuit, filter circuit, DC/DC voltage stabilizing circuit, is high-pressure side power electronics.
Described ultracapacitor power supply output, connects power consumer or electricity consumption device.
For ensureing the reliability of system, prime protective circuit, rear class protective circuit are increased.Described prime protective circuit and rear class protective circuit adopt TVS pipe.The velocity of discharge is faster, protects more reliable.
Described rectification circuit adopts Schottky barrier diodes.Oppositely voltage endurance capability is lower but forward conduction voltage drop is very little, makes the power that consumes on rectifier bridge less, is conducive to further reduce starting current.
The DC-DC device that DC/DC voltage stabilizing circuit uses is DC-DC switching device of a efficient, high pressure, voltage-dropping type, is output voltage 5V, and maximum output current can reach l A, can bear the input voltage up to 80 V.
For making system that stable Voltage-output and high-power applications is provided within the short time of high voltage bus zero load, increase ultracapacitor.
Ultracapacitor specification is 5V10F.The energy storage flash-over characteristic of super capacitor is suitable for the application scenario of high-power power supply.
In sum, the utility model has the advantages that: 1, prime protective circuit and rear class protective circuit adopt TVS pipe, and the velocity of discharge is faster, the more reliable cost of protection is low; 2, adopt high efficiency DC
/ 2thereby DC module can reduce power circuit electric energy loss and reduce starting current; 3, the use of super capacitor has solved the problem of current power transmission line status on-line monitoring system high-power power supply of moment, and its cryogenic property is superior, has avoided a difficult problem for lithium battery low temperature charging, and circuit and maintenance are simple.
Brief description of the drawings
Fig. 1 is the structured flowchart of the utility model high pressure CT self-power supply device.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
The utility model is a kind of high pressure CT self-powered hardware platform, as shown in Figure 1, comprises open C T and CT power taking box.
The open C T of hardware platform, its unshakable in one's determination nanocrystalline magnetic material that uses, can improve initial permeability greatly, and have advantages of lightweight, cost is low, good stability.
The CT power taking box of hardware platform comprises prime protective circuit, rectification circuit, filter circuit, rear class protective circuit, DC/DC voltage stabilizing circuit and ultracapacitor.
Being somebody's turn to do the self-power supply device based on high pressure CT, utilizing electromagnetic induction principle, can respond to alternating voltage from high voltage bus or circuit by coil by getting, then pass through rectification circuit, filter circuit, DC/DC voltage stabilizing circuit, is high-pressure side power electronics.
Described ultracapacitor power supply output, connects power consumer or electricity consumption device.
For ensureing the reliability of system, prime protective circuit, rear class protective circuit are increased.Described prime protective circuit and rear class protective circuit adopt TVS pipe.The velocity of discharge is faster, protects more reliable.
Described rectification circuit adopts Schottky barrier diodes.Oppositely voltage endurance capability is lower but forward conduction voltage drop is very little, makes the power that consumes on rectifier bridge less, is conducive to further reduce starting current.
The DC-DC device that DC/DC voltage stabilizing circuit uses is DC-DC switching device of a efficient, high pressure, voltage-dropping type, is output voltage 5V, and maximum output current can reach l A, can bear the input voltage up to 80 V.Device adopts the conversion regime of pulse-width modulation (PWM), and inside comprises low on-resistance, N-channel MOS FET, has saved outer member.Not only simplify Power Management Design but also can obtain higher conversion efficiency (more than 90%).This device inside comprises under-voltage latch, short-circuit protection and hot turn-off function, has simplified external circuit design.
For making system that stable Voltage-output and high-power applications is provided within the short time of high voltage bus zero load, increase ultracapacitor.Ultracapacitor specification is 5V10F.The energy storage flash-over characteristic of super capacitor is suitable for the application scenario of high-power power supply.
Although by reference to the accompanying drawings embodiment of the present utility model is described in detail, should not be construed as the restriction of the protection range to this patent.In the described scope of claims, the various amendments that those skilled in the art can make without creative work and distortion still belong to the protection range of this patent.
Claims (1)
1. a high pressure CT self-powered hardware platform, comprises open C T and CT power taking box, it is characterized in that: described CT power taking box comprises prime protective circuit, rectification circuit, filter circuit, rear class protective circuit, DC/DC voltage stabilizing circuit, ultracapacitor; Described ultracapacitor power supply output, connects power consumer or electricity consumption device; Described prime protective circuit and rear class protective circuit adopt TVS pipe; Described rectification circuit adopts Schottky barrier diodes; Described ultracapacitor specification is 5V10F; Described DC/DC voltage stabilizing circuit inside comprises low on-resistance and N-channel MOS FET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806941.5U CN203734382U (en) | 2013-12-10 | 2013-12-10 | High voltage CT self-power hardware platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806941.5U CN203734382U (en) | 2013-12-10 | 2013-12-10 | High voltage CT self-power hardware platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203734382U true CN203734382U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320806941.5U Expired - Fee Related CN203734382U (en) | 2013-12-10 | 2013-12-10 | High voltage CT self-power hardware platform |
Country Status (1)
| Country | Link |
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| CN (1) | CN203734382U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483367A (en) * | 2016-10-19 | 2017-03-08 | 广东电网有限责任公司电力科学研究院 | A kind of Intruding wave current/voltage integration monitoring device |
| CN112816753A (en) * | 2020-08-07 | 2021-05-18 | 苏州市清易传感电力电子有限公司 | Novel self-energy-taking voltage sensor |
| CN113959488A (en) * | 2021-10-09 | 2022-01-21 | 国网天津市电力公司 | High-voltage transmission line on-line monitoring method |
-
2013
- 2013-12-10 CN CN201320806941.5U patent/CN203734382U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483367A (en) * | 2016-10-19 | 2017-03-08 | 广东电网有限责任公司电力科学研究院 | A kind of Intruding wave current/voltage integration monitoring device |
| CN112816753A (en) * | 2020-08-07 | 2021-05-18 | 苏州市清易传感电力电子有限公司 | Novel self-energy-taking voltage sensor |
| CN113959488A (en) * | 2021-10-09 | 2022-01-21 | 国网天津市电力公司 | High-voltage transmission line on-line monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20151210 |
|
| EXPY | Termination of patent right or utility model |