阅读说明：本技术 电能表无损更换装置及其更换方法 (Nondestructive replacement device and method for electric energy meter ) 是由 于志勇 柳天霞 张钦明 姜涛 姚锡军 庞庆艳 汪欧雨 滕显明 张文刚 张宏斌 柳 于 2019-09-06 设计创作，主要内容包括：电能表无损更换装置及其更换方法,属于电力设备技术领域,本发明为解决现有多功能电能表更换时无法计量电量,导致供电企业损失的问题。本发明所述更换方法将运行电能表回路进行二次电流的分流,第一电能表安装插件和第二电能表安装插件并联安装在二次电流回路中,两个电能表安装插件分别用于安装待换电能表和被换电能表,更换电能表过程中,通过两个电能表安装插件交替安装待换电能表和被换电能表,断开其中一个电能表的二次电流运行回路,另一个电能表的二次运行回路与运行电能表回路连接,实现不间断计量,从而实现无损更换。本发明用于更换多功能电能表。(the invention discloses an electric energy meter nondestructive replacement device and a replacement method thereof, belongs to the technical field of power equipment, and aims to solve the problem that the loss of a power supply enterprise is caused because the electric quantity cannot be measured when an existing multifunctional electric energy meter is replaced. According to the replacing method, secondary current is shunted in an operating electric energy meter loop, a first electric energy meter mounting plug-in and a second electric energy meter mounting plug-in are installed in the secondary current loop in parallel, the two electric energy meter mounting plug-ins are respectively used for installing an electric energy meter to be replaced and a replaced electric energy meter, in the process of replacing the electric energy meters, the electric energy meter to be replaced and the replaced electric energy meter are alternately installed through the two electric energy meter mounting plug-ins, a secondary current operating loop of one electric energy meter is disconnected, a secondary operating loop of the other electric energy meter is connected with the operating electric energy meter loop, uninterrupted metering is achieved, and therefore lossless replacement is achieved. The invention is used for replacing the multifunctional electric energy meter.)

1. The device for lossless replacement of the electric energy meter is characterized by comprising a first electric energy meter mounting plug-in, a second electric energy meter mounting plug-in and a connector,

the connector is used for being connected with a loop of the running electric energy meter;

the first electric energy meter installation plug-in and the second electric energy meter installation plug-in are respectively used for installing an electric energy meter to be replaced and an electric energy meter to be replaced;

The connector is respectively provided with a secondary current loop connection point and a secondary voltage loop connection point;

the secondary current loop of the first electric energy meter installation plug-in is connected with the secondary current loop connection point, and the secondary current loop of the second electric energy meter installation plug-in is connected with the secondary current loop of the first electric energy meter installation plug-in parallel;

The secondary voltage loop of the first electric energy meter installation plug-in is connected with the secondary voltage loop connection point, and the secondary voltage loop of the second electric energy meter installation plug-in is connected with the secondary voltage loop of the first electric energy meter installation plug-in parallel.

2. the device for the nondestructive replacement of an electric energy meter according to claim 1, further comprising two panel meters, the two panel meters being connected in series in the secondary current circuit of the first electric energy meter mounting plug and in the secondary current circuit of the second electric energy meter mounting plug, respectively.

3. The device for lossless replacement of an electric energy meter according to claim 2, wherein the panel meter displays current, voltage and phase.

4. The method is characterized in that a circuit of an operating electric energy meter is divided into secondary currents, a first electric energy meter installation plug-in and a second electric energy meter installation plug-in are installed in the secondary current circuit in parallel, the two electric energy meter installation plug-ins are respectively used for installing the electric energy meter to be replaced and the electric energy meter to be replaced, the electric energy meter to be replaced and the electric energy meter to be replaced are alternately installed through the two electric energy meter installation plug-ins in the process of replacing the electric energy meters, the secondary current operation circuit of one electric energy meter is disconnected, the secondary operation circuit of the other electric energy meter is connected with the circuit of the operating electric energy meter, uninterrupted metering is realized, and accordingly, lossless replacement is realized.

5. The nondestructive replacement method for the electric energy meter according to claim 4, characterized in that the specific process for realizing the nondestructive replacement method is as follows:

S1, connecting a connector of the lossless replacing device of the electric energy meter into a loop of the running electric energy meter;

s2, installing the electric energy meter to be changed on the first electric energy meter installation plug-in unit;

s3, detaching a switched electric energy meter in the running electric energy meter loop, and installing the switched electric energy meter on a second electric energy meter installation plug-in unit;

and S4, detaching the electric energy meter to be replaced on the first electric energy meter installation plug-in unit, and installing the electric energy meter to be replaced in the operation electric energy meter loop.

Technical Field

The invention relates to a nondestructive replacement device and a replacement method for an electric energy meter, and belongs to the technical field of power equipment.

background

With the rapid development of economy, the demand of various industries on electricity is increasing day by day, and the phenomenon of unbalanced electricity consumption at different times is also becoming more serious. In order to relieve the increasingly sharp power supply and demand contradiction, adjust the load curve, improve the phenomenon of unbalanced power consumption, comprehensively implement a peak, average and valley time-sharing electricity price system, carry out peak clipping and valley filling, improve the national power utilization efficiency, reasonably utilize power resources, provide a multifunctional electric energy meter, and carry out time-sharing charging on the power consumption of users so as to improve the power utilization rate and improve the power consumption quality of residents. Different time periods and different charging standards are adopted for the power users. Power consumption during the valley period is encouraged.

The multifunctional electric energy meter is an electric energy meter which has more than two functions of time sharing, demand measurement and the like besides active (reactive) measurement, and can display, store and output data.

For the replacement of the multifunctional electric energy meter, the traditional replacement mode is to short circuit a secondary circuit of a current transformer, disconnect the secondary circuit of a voltage transformer, remove an old running meter, replace a new meter and then carry out field test. Throughout the replacement process, skilled operators will require approximately 30 minutes, and unskilled operators will require approximately 40 minutes. In the replacement process, the electric energy meter cannot measure due to the short circuit of the secondary circuit of the current transformer and the disconnection of the secondary circuit of the voltage transformer at the electric energy meter, and the network loss and the line loss are increased and distorted when a measuring point is checked, so that the checking and analysis of the line loss are influenced, and the considerable loss can be caused to a power supply enterprise when the electric quantity of the measuring point is settled.

disclosure of Invention

the invention aims to solve the problem that the loss of a power supply enterprise is caused by incapability of measuring the electric quantity during replacement of the conventional multifunctional electric energy meter, and provides a lossless replacement device and a replacement method of the lossless replacement device.

the invention relates to a nondestructive replacement device for an electric energy meter, which comprises a first electric energy meter installation plug-in unit, a second electric energy meter installation plug-in unit and a connector,

the connector is used for being connected with a loop of the running electric energy meter;

The first electric energy meter installation plug-in and the second electric energy meter installation plug-in are respectively used for installing an electric energy meter to be replaced and an electric energy meter to be replaced;

The connector is respectively provided with a secondary current loop connection point and a secondary voltage loop connection point;

The secondary current loop of the first electric energy meter installation plug-in is connected with the secondary current loop connection point, and the secondary current loop of the second electric energy meter installation plug-in is connected with the secondary current loop of the first electric energy meter installation plug-in parallel;

the secondary voltage loop of the first electric energy meter installation plug-in is connected with the secondary voltage loop connection point, and the secondary voltage loop of the second electric energy meter installation plug-in is connected with the secondary voltage loop of the first electric energy meter installation plug-in parallel.

Preferably, the electric energy meter further comprises two panel meters, and the two panel meters are respectively connected in series in the secondary current loop of the first electric energy meter mounting plug-in unit and the secondary current loop of the second electric energy meter mounting plug-in unit.

Preferably, the panel meter displays current, voltage and phase.

the invention relates to a lossless replacement method of an electric energy meter, which divides a loop of an operating electric energy meter into secondary currents, wherein a first electric energy meter installation plug-in and a second electric energy meter installation plug-in are installed in the secondary current loop in parallel, the two electric energy meter installation plug-ins are respectively used for installing the electric energy meter to be replaced and the electric energy meter to be replaced, in the process of replacing the electric energy meter, the electric energy meter to be replaced and the electric energy meter to be replaced are alternately installed through the two electric energy meter installation plug-ins, a secondary current operation loop of one electric energy meter is disconnected, and a secondary operation loop of the other electric energy meter is connected with the loop of the operating electric energy meter, so that uninterrupted metering is realized, and lossless.

preferably, the specific process for realizing the nondestructive replacement method is as follows:

S1, connecting a connector of the lossless replacing device of the electric energy meter into a loop of the running electric energy meter;

s2, installing the electric energy meter to be changed on the first electric energy meter installation plug-in unit;

s3, detaching a switched electric energy meter in the running electric energy meter loop, and installing the switched electric energy meter on a second electric energy meter installation plug-in unit;

and S4, detaching the electric energy meter to be replaced on the first electric energy meter installation plug-in unit, and installing the electric energy meter to be replaced in the operation electric energy meter loop.

The invention has the advantages that: the nondestructive replacement device provided by the invention adopts the connector to be connected with the operating electric energy meter loop, the nondestructive replacement device is adopted to shunt the secondary current of the operating electric energy meter loop, the shunted secondary current loop is respectively connected into the loops of the first electric energy meter installation plug-in and the second electric energy meter installation plug-in, the secondary current loops of the two electric energy meter installation plug-ins run in parallel, the two electric energy meter installation plug-ins are respectively used for installing an electric energy meter to be replaced and an electric energy meter to be replaced, in the process of replacing the electric energy meter, the electric energy meters to be replaced and the replaced electric energy meters are alternately installed through the two electric energy meter installation plug-in units, the secondary current operation loop of one electric energy meter is disconnected, the secondary operation loop of the other electric energy meter is connected with the operation electric energy meter loop, the risk of opening a circuit of the secondary loop of the current transformer does not exist, the other electric energy meter realizes uninterrupted metering, and lossless replacement is realized through an alternate replacement mode.

The lossless replacing device provided by the invention can meet the requirement of meter replacing work of the electric energy meter, can achieve the purpose of lossless replacing, avoids loss caused by loss of metering in the electric energy meter replacing link to enterprises, and ensures the authenticity of network loss and line loss assessment results and the fairness and justness of metering.

drawings

FIG. 1 is a schematic diagram of the device for lossless replacement of an electric energy meter according to the present invention;

FIG. 2 is a schematic diagram of nondestructive replacement by using the nondestructive replacement device for electric energy meters.

Detailed Description

the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.