阅读说明：本技术 一种交流仪表检验装置精细化调节器 (Fine regulator of alternating current instrument testing device ) 是由 刘罡 于永滨 张羽 曾辉 王轩 吴珊 房琛 李永臣 白亮 郝新 薛丽敏 于 2020-04-20 设计创作，主要内容包括：本发明涉及电能计量电测量仪表技术领域,尤其涉及一种交流仪表检验装置精细化调节器。本发明包括精密电流互感器、补偿式电容器及调节器外壳,其中在精密电流互感器的外侧紧密包裹有调节器外壳,精密电流互感器的一次侧和二次侧接线端口裸露于调节器外壳的外部；补偿式电容器与精密电流互感器相连,精密电流互感器的一次侧和二次侧接线端口裸露于调节器外壳的外部；所述调节器输入端口和交流仪表检验装置通过连接导线并联相连,调节器输出端口和多功能标准表通过连接导线并联相连。本发明有效解决了交流仪表检验装置无法输出较小电流或电压信号的问题,具有结构简单、成本低廉、节省资金的显著特点,适宜在电力系统推广和应用,其应用前景可观。(The invention relates to the technical field of electric energy metering and measuring instruments, in particular to a fine regulator of an alternating current instrument testing device. The invention comprises a precision current transformer, a compensation capacitor and a regulator shell, wherein the regulator shell is tightly wrapped at the outer side of the precision current transformer, and primary side and secondary side wiring ports of the precision current transformer are exposed out of the regulator shell; the compensation capacitor is connected with the precision current transformer, and primary side and secondary side wiring ports of the precision current transformer are exposed outside the shell of the regulator; the input port of the regulator is connected with the alternating current instrument testing device in parallel through a connecting wire, and the output port of the regulator is connected with the multifunctional standard meter in parallel through a connecting wire. The invention effectively solves the problem that the alternating current instrument inspection device can not output smaller current or voltage signals, has the obvious characteristics of simple structure, low cost and capital saving, is suitable for popularization and application in an electric power system, and has considerable application prospect.)

1. The utility model provides an exchange instrument verifying attachment regulator that becomes more meticulous, characterized by: the device comprises a precision current transformer, a compensation capacitor and a regulator shell, wherein the regulator shell is tightly wrapped outside the precision current transformer, and primary side and secondary side wiring ports of the precision current transformer are exposed outside the regulator shell; the compensation capacitor is connected with the precision current transformer, and primary side and secondary side wiring ports of the precision current transformer are exposed outside the shell of the regulator; the input port of the regulator is connected with the alternating current instrument testing device in parallel through a connecting wire, and the output port of the regulator is connected with the multifunctional standard meter in parallel through a connecting wire.

2. The ac meter testing device refinement regulator of claim 1, wherein: when the alternating current instrument checking device outputs a small current signal, the compensating capacitor is connected with the S1 and S2 sides of the precision current transformer in parallel and is connected through a connecting wire; when the alternating current instrument checking device outputs a small voltage signal, the compensation capacitor is connected with the sides of the precision current transformers P1 and P2 in parallel and is connected through a connecting wire.

3. The ac meter testing device refinement regulator of claim 1, wherein: the primary side port of the precise current transformer is an input port of the regulator, and the secondary side port of the precise current transformer is an output port of the regulator.

4. The ac meter testing device refinement regulator of claim 1, wherein: the precision current transformer has the accuracy grade of 0.01 grade, rated primary current of 10A, rated secondary current of 1A, rated load of 5VA, offline load of 2.5VA and rated voltage of 500V; the precise current transformer iron core is made of an iron-nickel alloy coiled iron core with high magnetic conductivity.

5. The ac meter testing device refinement regulator of claim 1, wherein: the compensation capacitor adopts YC series, YC-1 type is adopted when the small current is output, and YC-0.5 type is adopted when the small voltage is output.

6. The ac meter testing device refinement regulator of claim 1, wherein: the regulator shell is made of 6060 or 6063 type aluminum alloy, and the thickness of the regulator shell is 0.5-2 mm; the whole external structure of regulator is the cuboid structure, and the regulator shell passes through the aluminum alloy parcel.

7. The ac meter testing device refinement regulator of claim 1, wherein: the output end of the alternating current instrument testing device is connected with the precise current transformer in a forward or reverse connection mode in parallel.

8. The ac meter testing device refinement regulator of claim 1, wherein: the regulating device has two modes of positive connection or negative connection according to the current or voltage signal output by the alternating current instrument testing device; the accuracy grade of the alternating current instrument testing device is 0.05 grade, and the accuracy grade of the precision current transformer is 0.01 grade.

9. The ac meter testing device refinement regulator of claim 1, wherein: when the alternating current instrument testing device outputs a small current signal, the adjusting device adopts a positive connection mode, and the output I of the alternating current instrument testing device_out+ is connected with the primary side P1 of the precision current transformer through a lead; output of AC instrument checking device I_out-connected by a wire to the primary side P2 of the precision current transformer; input of multifunctional standard watch I_in+ connected to the secondary side S1 of the precision current transformer via wire, and input I of the multifunctional standard meter_inThe secondary side S2 of the precision current transformer is connected with the secondary side S1 of the precision current transformer through a lead, and a compensation capacitor C is connected between the secondary side S2 and the secondary side S2 of the precision current transformer in parallel.

10. The ac meter testing device refinement regulator of claim 1, wherein: when the alternating current instrument testing device outputs a small voltage signal, the adjusting device adopts a reverse connection mode, and the output U of the alternating current instrument testing device_out+ connected to the primary side S1 of the precision current transformer via a wire, and the output U of the AC instrument checking device_out-connected to the primary side S2 of the precision current transformer by a wire; input U of multifunctional standard meter_in+ connected to the secondary side P1 of the precision current transformer via wire, and the input U of the multifunctional standard meter_inThe secondary side P2 of the precision current transformer is connected with the secondary side P1 of the precision current transformer through a lead, and a compensation capacitor C is connected between the P1 and the P2 in parallel.

Technical Field

The invention relates to the technical field of electric energy metering and measuring instruments, in particular to a fine regulator of an alternating current instrument testing device.

Background

According to the requirements of the standard D L/T1112-2009 verification regulations for AC and DC instrument inspection devices in the power industry,

the method for verifying or calibrating the AC meter inspection device usually adopts a direct comparison method using a multifunctional standard meter as a standard, and the multifunctional standard meter generally has higher accuracy grade and higher resolution. The alternating current instrument inspection device of the inspected equipment has low accuracy grade and low resolution due to the restriction of factors such as manufacturing process, cost and the like, and is generally difficult to output a small current or voltage signal source.

Object of the Invention

The invention provides a refined regulator of an alternating current instrument checking device, aiming at solving the problem that the alternating current instrument checking device cannot output smaller current or voltage signals.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a fine regulator of an alternating current instrument inspection device comprises a precision current transformer, a compensation capacitor and a regulator shell, wherein the regulator shell is tightly wrapped outside the precision current transformer, and primary side and secondary side wiring ports of the precision current transformer are exposed outside the regulator shell; the compensation capacitor is connected with the precision current transformer, and primary side and secondary side wiring ports of the precision current transformer are exposed outside the shell of the regulator; the input port of the regulator is connected with the alternating current instrument testing device in parallel through a connecting wire, and the output port of the regulator is connected with the multifunctional standard meter in parallel through a connecting wire.

Further, when the alternating current instrument inspection device outputs a small current signal, the compensation capacitor is connected with the sides of the precision current transformers S1 and S2 in parallel and is connected through a connecting wire; when the alternating current instrument checking device outputs a small voltage signal, the compensation capacitor is connected with the sides of the precision current transformers P1 and P2 in parallel and is connected through a connecting wire.

The primary side port of the precise current transformer is an input port of the regulator, and the secondary side port of the precise current transformer is an output port of the regulator.

The precision current transformer has the accuracy grade of 0.01 grade, rated primary current of 10A, rated secondary current of 1A, rated load of 5VA, offline load of 2.5VA and rated voltage of 500V; the precise current transformer iron core is made of an iron-nickel alloy coiled iron core with high magnetic conductivity.

The compensation capacitor adopts YC series, YC-1 type is adopted when the small current is output, and YC-0.5 type is adopted when the small voltage is output.

The regulator shell is made of 6060 or 6063 type aluminum alloy, and the thickness of the regulator shell is 0.5-2 mm; the whole external structure of regulator is the cuboid structure, and the regulator shell passes through the aluminum alloy parcel.

The output end of the alternating current instrument testing device is connected with the precise current transformer in a forward or reverse connection mode in parallel.

The regulating device has two modes of positive connection or negative connection according to the current or voltage signal output by the alternating current instrument testing device; the accuracy grade of the alternating current instrument testing device is 0.05 grade, and the accuracy grade of the precision current transformer is 0.01 grade.

When the alternating current instrument testing device outputs a small current signal, the adjusting device adopts a positive connection mode, and the output I of the alternating current instrument testing device_out+ is connected with the primary side P1 of the precision current transformer through a lead; output of AC instrument checking device I_out-connected by a wire to the primary side P2 of the precision current transformer; input of multifunctional standard watch I_in+ connected to the secondary side S1 of the precision current transformer via wire, and input I of the multifunctional standard meter_inThe secondary side S2 of the precision current transformer is connected with the secondary side S1 of the precision current transformer through a lead, and a compensation capacitor C is connected between the secondary side S2 and the secondary side S2 of the precision current transformer in parallel.

When the alternating current instrument testing device outputs a small voltage signal, the adjusting device adopts a reverse connection mode, and the output U of the alternating current instrument testing device_out+ connected to the primary side S1 of the precision current transformer via a wire, and the output U of the AC instrument checking device_out-connected to the primary side S2 of the precision current transformer by a wire; input U of multifunctional standard meter_in+ connected to the secondary side P1 of the precision current transformer via wire, and the input U of the multifunctional standard meter_inThe secondary side P2 of the precision current transformer is connected with the secondary side P1 of the precision current transformer through a lead, and a compensation capacitor C is connected between the P1 and the P2 in parallel.

The invention has the advantages and beneficial effects that:

the invention effectively solves the problem that the alternating current instrument checking device can not output smaller current or voltage signals, and has the obvious characteristics of simple structure, low cost and capital saving.

The regulator can take the forward or reverse connection circuit of the high-accuracy grade precision current transformer as a core circuit, and proportionally convert the output signal of the alternating current instrument testing device so as to achieve the purpose of outputting a smaller current or voltage signal source.

Drawings

The invention will be described in further detail with reference to the drawings and specific embodiments for facilitating understanding and practicing of the invention by those of ordinary skill in the art, but it should be understood that the scope of the invention is not limited by the specific embodiments.

FIG. 1 is a wiring diagram of the present invention for outputting a small current signal;

fig. 2 is a wiring diagram of the output small voltage signal of the present invention.

Detailed Description

The disclosure will be further explained with reference to the drawings. It is specifically intended that the following description be regarded as illustrative in nature and not as restrictive in any way, since it is intended to limit the disclosure to the precise form disclosed and illustrated. Unless specifically stated otherwise, the relative arrangement of components and steps and numerical expressions and values set forth in the embodiments do not limit the scope of the present disclosure. Additionally, techniques, methods, and apparatus known to those skilled in the art may not be discussed in detail but are intended to be part of the specification where appropriate.

The invention relates to a refined regulator of an alternating current instrument inspection device, which mainly comprises a precise current transformer, a compensation capacitor and a regulator shell. Specifically, a regulator shell is tightly wrapped on the outer side of the precision current transformer. The primary side and the secondary side wiring ports of the precise current transformer are exposed outside the shell of the regulator. When the alternating current instrument checking device outputs a small current signal, the compensation capacitor is connected with the sides of the precision current transformers S1 and S2 in parallel and is connected through a connecting wire. When the alternating current instrument checking device outputs a small voltage signal, the compensation capacitor is connected with the sides of the precision current transformers P1 and P2 in parallel and is connected through a connecting wire.

The regulator shell is made of 6060 or 6063 type aluminum alloy, the thickness is (0.5-2) mm, and the preferred value in specific implementation is 1 mm.

The overall appearance structure of the regulator is a cuboid structure. The outer box is wrapped by aluminum alloy. The primary side and the secondary side wiring ports of the precise current transformer are exposed outside the shell of the regulator. The primary side port of the precise current transformer is an input port of the regulator, and the secondary side port of the precise current transformer is an output port of the regulator. The input port of the regulator is connected with the AC instrument testing device in parallel through a connecting wire. The output port of the regulator is connected with the multifunctional standard meter in parallel through a connecting wire.

The precision current transformer adopts a Wuhan Nanrui finite responsibility company H L series precision current transformer, the accuracy grade is 0.01 grade, the rated primary current is 10A, the rated secondary current is 1A, the rated load is 5VA, the offline load is 2.5VA, and the rated voltage is 500V.

The compensation capacitor adopts YC series, YC-1 type is adopted when the small current is output, and YC-0.5 type is adopted when the small voltage is output.

The invention relates to a fine regulator of an alternating current instrument checking device, which is a precision current transformer with a forward or reverse transformation ratio of 10A/1A and a rated load of 0.2VA, which is connected in parallel at the output end of the alternating current instrument checking device, wherein the precision grade of the alternating current instrument checking device is usually 0.05 grade, so that the precision grade of the precision current transformer reaches 0.01 grade, and the material of the iron core of the precision current transformer is usually iron-nickel alloy coiled ring iron core with high magnetic conductivity. According to the output current or voltage signal of the alternating current instrument testing device, the regulator has two modes of positive connection or negative connection:

when the alternating current instrument checking device outputs a small current signal, the regulator adopts a positive connection mode, and a wiring diagram is shown in figure 1, wherein figure 1 is a wiring diagram for outputting the small current signal. Output I of the AC instrument checking device at this time_out+ is connected with the primary side P1 of the precision current transformer through a 4-square copper wire; output of AC instrument checking device I_outConnected to the primary side P2 of the precision current transformer by a 4-square copper wire. Input of multifunctional standard watch I_in+ connected to the secondary side S1 of the precision current transformer via 4 square copper wire, and input I of the multifunctional standard meter_in-by means of 4 square copper conductors andthe secondary side S2 of the precision current transformer is connected, a compensation capacitor C is connected in parallel between S1 and S2 to compensate phase errors, and the size of the compensation capacitor is usually 1 muF.

When the AC instrument checking device outputs a small voltage signal, the regulator adopts a reverse connection mode, and the wiring diagram is shown in figure 2, and figure 2 is the wiring diagram of the invention for outputting the small voltage signal. Output U of AC instrument checking device at the moment_out+ connected to the primary side S1 of the precision current transformer through 4 square copper wire, and the output U of the AC instrument tester_outConnected to the primary side S2 of the precision current transformer by a 4-square copper wire. Input U of multifunctional standard meter_in+ connected to the secondary side P1 of the precision current transformer via 4 square copper wire, and the input U of the multifunctional standard meter_inThe phase error is compensated by a compensation capacitor C connected in parallel between P1 and P2 and connected with the secondary side P2 of the precision current transformer through a 4-square copper wire, and the size of the compensation capacitor is usually 0.5 muF.

While the present disclosure has been described with reference to exemplary embodiments, it should be understood that the present disclosure is not limited to the exemplary embodiments described above. It will be apparent to those skilled in the art that the above-described exemplary embodiments may be modified without departing from the scope and spirit of the disclosure. The scope of the following claims is to be accorded the broadest interpretation so as to encompass all such modifications and equivalent structures and functions.