CN205070611U - Protection measurement and control device - Google Patents
Protection measurement and control device Download PDFInfo
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- CN205070611U CN205070611U CN201520835699.3U CN201520835699U CN205070611U CN 205070611 U CN205070611 U CN 205070611U CN 201520835699 U CN201520835699 U CN 201520835699U CN 205070611 U CN205070611 U CN 205070611U
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- transformer
- current transformer
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- protection
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Abstract
The utility model discloses a protection measurement and control device, a serial communication port, including exchanging the mutual -inductor board, be provided with the at least a set of current transformer and the at least a set of voltage transformer of collecting wire way signal respectively on the interchange mutual -inductor board, current transformer and voltage transformer output measure chip and the unit connection of AD device with DN8202B respectively. 6 current transformer devices, 6 voltage transformer devices are installed to interchange mutual -inductor board in this device, gather the measuring current signal of protection and the voltage signal on two loop line ways respectively, and each other does not influence, and all are the three -phase formula, monitoring blind spot that the scheme of having got rid of double -phase formula current transformer was brought.
Description
Technical field
The utility model relates to electric energy field, particularly relates to a kind of protection supervisory equipment.
Background technology
In current outdoor cabinet type transformer station engineering, for example in the novel energy power generation project such as photovoltaic plant, blower fan generating, when measure and control device is linked in main website, need the ethernet communication supervisor of configure dedicated, general in order to reliable communications, the mode that each communication processor adopts looped network to connect.And common protection supervisory equipment; voltage transformer can accomplish that protection is public, but current transformer can not to realize protection public, so will realize protection and measure two large functions; the scope protecting big current can not be ensured, or the precision of 0.2 grade of measurement can not be ensured.
Ensure when protection and measurement and control function particularly for the integrated two loop line roads of a table apparatus (namely protection supervisory equipment, communication processor and ring exchanger integrate) that the precision of 02. grade of big current scope and measurement is difficult to realize especially.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of measure and control device, and it achieves the protection observing and controlling function in two loops, and certainty of measurement is high, and current range is wide.
The utility model solves the technical scheme that its technical problem adopts:
A kind of protection supervisory equipment; it is characterized in that; comprise D.C mutual-inductor plate; described D.C mutual-inductor plate is provided with at least one group of current transformer gathering line signal respectively and at least one group of voltage transformer, and described current transformer is connected with DN8202B computation chip and AD device cell respectively with voltage transformer output.
As the further improvement of such scheme, described current transformer and voltage transformer have two groups respectively, and described often group current transformer and voltage measuring transformer often return line current and voltage.
As the further improvement of such scheme, described often group current transformer is three current transformers, and described current transformer is three-phase type current transformer, and often organizing voltage transformer is three voltage transformers, and described voltage transformer is three-phase type voltage transformer.
As the further improvement of such scheme, described current transformer is for protection and measure public, and model is HCT916B-1.
As the further improvement of such scheme, described AD device cell comprises 14 AD devices of 16 AD devices and the temperature acquisition calculated for the protection of value, and described 16 AD device input are connected with current transformer and voltage transformer respectively.
The beneficial effects of the utility model have:
A kind of protection supervisory equipment of the utility model; mode by adopting protection and measurement current transform er to share: the three-phase current on every loop line road converts through same group of current transformer of D.C mutual-inductor plate; secondary singal source after conversion; both as protective current Gather and input; again as the Gather and input measuring electric current, thus save the cloth board space in the design of D.C mutual-inductor plate.Low current that is 1.2 times specified below, can ensure to measure the precision of 0.2 grade of electric current, the precision that power is 0.5 grade, meanwhile, when big current 10 times of rated current, protection can also correct operation, and operation precision can reach 2.5 grades.
One block of D.C mutual-inductor plate of every table apparatus; 6 current transformer devices, 6 voltage transformer devices are installed; gather current signal and the voltage signal of the protection on two loop line roads respectively; be independent of each other; and be all three-phase type, the monitoring dead band that the scheme eliminating two-phase type current transformer is brought.
Accompanying drawing explanation
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail, wherein:
Fig. 1 is the utility model example structure block diagram.
See Fig. 1; a kind of protection supervisory equipment; it is characterized in that; comprise D.C mutual-inductor plate; described D.C mutual-inductor plate is provided with at least one group of current transformer gathering line signal respectively and at least one group of voltage transformer, and described current transformer is connected with DN8202B computation chip and AD device cell respectively with voltage transformer output.The three-phase current on every loop line road converts through same group of current transformer of D.C mutual-inductor plate; secondary singal source after conversion; both as protective current Gather and input, again as the Gather and input measuring electric current, thus the cloth board space in the design of D.C mutual-inductor plate had been saved.Adopt and measure and protect dual-purpose current transformer; and DN8202B computation chip; low current that is 1.2 times specified below; the precision of 0.2 grade measuring electric current can be ensured; the precision that power is 0.5 grade, meanwhile, when big current 10 times of rated current; protection can also correct operation, and operation precision can reach 2.5 grades.
For improving integrated level; described current transformer and voltage transformer have two groups respectively; often organizing current transformer is three current transformers; described current transformer is three-phase type current transformer; model is HCT916B-1; often organizing voltage transformer is three voltage transformers; described voltage transformer is three-phase type voltage transformer; gather current signal and the voltage signal of the protection on two loop line roads respectively; be independent of each other; and be all three-phase type, the monitoring dead band that the scheme eliminating two-phase type current transformer is brought.
AD device cell comprises 14 AD devices of 16 AD devices and the temperature acquisition calculated for the protection of value, adopts 14 AD to gather the temperature equivalent resistance of PT100 transmission, realizes two-way measuring tempeature and reach positive and negative 0.5 degree.
The above, just better embodiment of the present utility model, but the utility model is not limited to above-described embodiment, as long as it reaches technique effect of the present utility model with any same or similar means, all should belong to protection range of the present utility model.
Claims (5)
1. a protection supervisory equipment; it is characterized in that; comprise D.C mutual-inductor plate; described D.C mutual-inductor plate is provided with at least one group of current transformer gathering line signal respectively and at least one group of voltage transformer, and described current transformer is connected with DN8202B computation chip and AD device cell respectively with voltage transformer output.
2. described a kind of protection supervisory equipment according to claim 1, it is characterized in that, described current transformer and voltage transformer have two groups respectively, and described often group current transformer and voltage measuring transformer often return line current and voltage.
3. described a kind of protection supervisory equipment according to claim 1; it is characterized in that; described often group current transformer is three current transformers; described current transformer is three-phase type current transformer; often organizing voltage transformer is three voltage transformers, and described voltage transformer is three-phase type voltage transformer.
4. described a kind of protection supervisory equipment according to claim 1 and 2, is characterized in that, described current transformer is for protection and measure public, and model is HCT916B-1.
5. described a kind of protection supervisory equipment according to claim 1; it is characterized in that; described AD device cell comprises 14 AD devices of 16 AD devices and the temperature acquisition calculated for the protection of value, and described 16 AD device input are connected with current transformer and voltage transformer respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520835699.3U CN205070611U (en) | 2015-10-23 | 2015-10-23 | Protection measurement and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520835699.3U CN205070611U (en) | 2015-10-23 | 2015-10-23 | Protection measurement and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205070611U true CN205070611U (en) | 2016-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520835699.3U Active CN205070611U (en) | 2015-10-23 | 2015-10-23 | Protection measurement and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205070611U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975603A (en) * | 2019-03-19 | 2019-07-05 | 积成电子股份有限公司 | The circuit of protection, measurement and function of measuring integrated design |
| CN111555167A (en) * | 2020-04-17 | 2020-08-18 | 华为技术有限公司 | Box-type substation and photovoltaic power generation system |
-
2015
- 2015-10-23 CN CN201520835699.3U patent/CN205070611U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109975603A (en) * | 2019-03-19 | 2019-07-05 | 积成电子股份有限公司 | The circuit of protection, measurement and function of measuring integrated design |
| CN111555167A (en) * | 2020-04-17 | 2020-08-18 | 华为技术有限公司 | Box-type substation and photovoltaic power generation system |
| CN111555167B (en) * | 2020-04-17 | 2021-08-20 | 华为技术有限公司 | Box-type substation and photovoltaic power generation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Yuanshu Inventor after: Zhang Xiang Inventor after: Xia Quanxin Inventor before: Zhang Zhongyou Inventor before: Zhang Xiang Inventor before: Zhang Hao |
|
| COR | Change of bibliographic data |