CN105203905A - Electric energy measuring secondary circuit rapid line inspection instrument - Google Patents

Electric energy measuring secondary circuit rapid line inspection instrument Download PDF

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Publication number
CN105203905A
CN105203905A CN201510603421.8A CN201510603421A CN105203905A CN 105203905 A CN105203905 A CN 105203905A CN 201510603421 A CN201510603421 A CN 201510603421A CN 105203905 A CN105203905 A CN 105203905A
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emitting diode
light emitting
transmitter
receiver
signal
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王立
李志刚
乔社路
袁安徽
王妍
杨明
李继英
谷学民
姬少奇
陈弈明
申振平
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State Grid Corp of China SGCC
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
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State Grid Corp of China SGCC
Handan Power Supply Co of State Grid Hebei Electric Power Co Ltd
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Abstract

本发明涉及一种电能计量二次回路快速查线仪,属于电能计量装置技术领域,包括独立设置的信号发射机和信号接收机,信号发射机包括电源模块、方波发射元件、脉冲分配元件、发射机发光二极管及带有第一线夹的第一导线,信号接收机包括接收机发光二极管及带有第二线夹的第二导线,将信号发射机和信号接收机分别连接在二次回路的两端,通过信号发射机向回路逐次释放脉冲,发射机发光二极管和接收机发光二极管能够同时顺序亮起,说明二次回路的连接是正常的,如果发射机发光二极管中有不亮者,即表示相对应的线路不通,如果接收机发光二极管非顺序点亮,则表示线路连接顺序有误,该查线仪能够简化程序,缩短检查时间,检查的准确性和安全性有明显提高。

The invention relates to a quick line checking instrument for a secondary circuit of electric energy metering, which belongs to the technical field of electric energy metering devices, and includes a signal transmitter and a signal receiver independently arranged. The signal transmitter includes a power supply module, a square wave transmitting element, a pulse distribution element, The transmitter light-emitting diode and the first wire with the first clamp, the signal receiver includes the receiver light-emitting diode and the second wire with the second clamp, and the signal transmitter and the signal receiver are respectively connected to the secondary circuit At both ends, the signal transmitter releases pulses to the circuit successively, and the transmitter LED and the receiver LED can light up sequentially at the same time, indicating that the connection of the secondary circuit is normal. It means that the corresponding line is not connected. If the light-emitting diodes of the receiver are not lit sequentially, it means that the line connection sequence is wrong. The line checking instrument can simplify the procedure, shorten the inspection time, and significantly improve the accuracy and safety of the inspection.

Description

一种电能计量二次回路快速查线仪A fast line checking instrument for the secondary circuit of electric energy metering

技术领域technical field

本发明属于电能计量装置技术领域,涉及电能计量装置的安装检测仪器,具体涉及一种电能计量二次回路快速查线仪。The invention belongs to the technical field of electric energy metering devices, and relates to an installation and detection instrument of the electric energy metering device, in particular to a quick line checking instrument for a secondary circuit of electric energy metering.

背景技术Background technique

电能计量装置在进行装表接电时包括电能计量装置的新装、增容,电能计量回路的故障处理工作都要对电能计量二次回路进行检查,确保接线准确无误,计量二次回路检查的工作量较大、检查周期长,三相三线的电能表计量二次回路接线有7根,三相四线的电能表计量二次回路接线有10根,如果是新站投运、分路较多时,工作量会更大;传统方法测量计量二次回路时,是让互感器侧和电能表侧的对应线端接地,通过大地形成回路来测量线的通断,若遇柜体的接地点老化等问题,则无法形成可靠回路,用万用表来测量回路通断时准确度不高;在检查二次回路时点击端子次数较多,三相三线时为53次,三相四线时为81次,点击端子的次数越多,误碰其他回路的次数会增多,这使得现场作业的安全风险增高。When the electric energy metering device is installed and connected to electricity, including the new installation and capacity increase of the electric energy metering device, and the fault handling work of the electric energy metering circuit, the secondary circuit of the electric energy metering should be checked to ensure that the wiring is correct, and the work of checking the secondary circuit of the metering The quantity is large and the inspection period is long. There are 7 wires for the secondary circuit of the three-phase three-wire electric energy meter measurement, and 10 wires for the secondary circuit measurement of the three-phase four-wire electric energy meter. If the new station is put into operation and there are many branches , the workload will be greater; the traditional method of measuring the secondary circuit is to ground the corresponding line terminals on the transformer side and the electric energy meter side, and measure the continuity of the line through the earth to form a loop. If the grounding point of the cabinet is aging If there are other problems, a reliable circuit cannot be formed, and the accuracy of measuring the on-off of the circuit with a multimeter is not high; when checking the secondary circuit, the number of clicks on the terminal is more, 53 times for three-phase three-wire, and 81 times for three-phase four-wire , the more times you click on the terminal, the more times you touch other circuits by mistake, which increases the safety risk of on-site operations.

综上所述可以发现,传统方法对电能计量二次回路的检查程序繁琐且耗时耗力,易出现纰漏,而且安全风险高,因此需要研制一种电能计量二次回路快速查线仪。In summary, it can be found that the inspection procedure of the secondary circuit of electric energy metering by the traditional method is cumbersome, time-consuming and labor-intensive, prone to mistakes, and has high safety risks. Therefore, it is necessary to develop a fast line inspection instrument for the secondary circuit of electric energy metering.

发明内容Contents of the invention

本发明克服了电能计量二次回路的传统检查方法中存在的缺点和不足,提供了一种电能计量二次回路快速查线仪,该仪器能够简化操作步骤,缩短检查周期,减少点击端子次数,降低现场作业安全风险。The invention overcomes the shortcomings and deficiencies in the traditional inspection method of the secondary circuit of electric energy measurement, and provides a quick line inspection instrument for the secondary circuit of electric energy measurement, which can simplify the operation steps, shorten the inspection period, and reduce the number of clicks on terminals Reduce on-site operation safety risks.

一种电能计量二次回路快速查线仪,关键点是,该查线仪包括独立设置的信号发射机和信号接收机,信号发射机包括安装在第一壳体中的电源模块、信号发射元件、一组输出连接机构及相对应的一组发射机发光二极管,发射机发光二极管与相对应的输出连接机构相接,电源模块与信号发射元件的输入端连接,输出连接机构一端与信号发射元件的输出端连接,另一端穿过第一壳体向外伸出,信号接收机包括安装在第二壳体中的一组输入连接机构及相对应的一组接收机发光二极管,输入连接机构一端与接收机发光二极管连接,另一端穿过第二壳体向外伸出,接收机发光二极管与发射机发光二极管的数量相同且一一对应,所述的发射机发光二极管和接收机发光二极管在电路中的连接导通方向与信号发射方向相同。A fast line checking instrument for a secondary circuit of electric energy metering, the key point is that the line checking instrument includes an independently set signal transmitter and a signal receiver, and the signal transmitter includes a power supply module installed in a first housing, a signal transmitting element 1. A set of output connection mechanisms and a corresponding set of transmitter light-emitting diodes, the transmitter light-emitting diodes are connected to the corresponding output connection mechanisms, the power supply module is connected to the input end of the signal emission element, and one end of the output connection mechanism is connected to the signal emission element The output end is connected, and the other end protrudes outward through the first casing. The signal receiver includes a set of input connection mechanisms installed in the second casing and a corresponding set of receiver light-emitting diodes. One end of the input connection mechanism It is connected with the receiver light-emitting diode, and the other end protrudes outward through the second housing. The number of the receiver light-emitting diode and the transmitter light-emitting diode is the same and corresponds one by one. The transmitter light-emitting diode and the receiver light-emitting diode are in The connection conduction direction in the circuit is the same as the signal emission direction.

所述的信号发射元件包括相连的方波发生器NE555和脉冲分配器CD4017,发射机发光二极管为4组并且分别与脉冲分配器CD4017的输出端连接,4组发射机发光二极管分别为LED1、LED2、LED3、LED4,相对应的接收机发光二极管分别为LED5、LED6、LED7、LED8。The signal emitting element includes a connected square wave generator NE555 and a pulse distributor CD4017. The transmitter light-emitting diodes are 4 groups and are respectively connected to the output terminals of the pulse distributor CD4017. The 4 groups of transmitter light-emitting diodes are LED1 and LED2 respectively. , LED3, LED4, and the corresponding receiver light-emitting diodes are LED5, LED6, LED7, LED8 respectively.

所述的所有发射机发光二极管和接收机发光二极管均并联有一个单向二极管,单向二极管的导通方向与信号发射方向相反。All the transmitter light emitting diodes and receiver light emitting diodes are connected in parallel with a one-way diode, and the conduction direction of the one-way diode is opposite to the direction of signal transmission.

所述的信号发射机中还设置有与电源模块连接的开关提示机构,开关提示机构为一个发光二极管LED0和一个保护电阻串联组成。The signal transmitter is also provided with a switch prompting mechanism connected to the power module, and the switch prompting mechanism is composed of a light emitting diode LED0 and a protection resistor connected in series.

所述的发光二极管LED0的颜色与发射机发光二极管及接收机发光二极管的颜色不相同。The color of the light emitting diode LED0 is different from the color of the transmitter light emitting diode and the receiver light emitting diode.

所述的发射机发光二极管与接收机发光二极管的颜色相同。The color of the transmitter light-emitting diode is the same as that of the receiver light-emitting diode.

所述的输出连接机构包括第一导线和第一线夹,第一导线一端与信号发射元件的输出端连接,另一端穿过第一壳体向外伸出并与第一线夹连接,所述的输入连接机构包括第二导线和第二线夹,第二导线一端与接收提示机构连接,另一端穿过第二壳体向外伸出并与第二线夹连接。The output connection mechanism includes a first wire and a first wire clip, one end of the first wire is connected to the output end of the signal emitting element, and the other end extends outward through the first housing and is connected to the first wire clip, so The above-mentioned input connection mechanism includes a second wire and a second wire clip, one end of the second wire is connected to the receiving prompt mechanism, and the other end extends outward through the second housing and is connected to the second wire clip.

本发明采用信号发射机和信号接收机进行相对应的信号传输,通过相对应的发射机发光二极管和接收机发光二极管的亮起情况进行线路连接检查,所有发光二极管连接导通方向与信号发射方向相同,将信号发射机与信号接收机分别连接在二次回路两端进行检测形成回路时,能够通过同一线路上的发射机发光二极管和接收机发光二极管的亮起情况判断该路是否连接正常,检测程序较之传统的检查方式大大简化,检测时间明显缩短,并且不易出现检查错误,检查的准确度也得到了保证,为后续的正常使用奠定了良好的基础。The present invention adopts the signal transmitter and the signal receiver to carry out the corresponding signal transmission, and checks the line connection through the light-up conditions of the corresponding transmitter light-emitting diodes and receiver light-emitting diodes, and all the light-emitting diodes are connected to the conduction direction and the signal transmission direction Similarly, when the signal transmitter and the signal receiver are respectively connected to the two ends of the secondary circuit for detection to form a circuit, it can be judged whether the circuit is connected normally by the light-up of the transmitter LED and the receiver LED on the same line. Compared with the traditional inspection method, the inspection procedure is greatly simplified, the inspection time is significantly shortened, and inspection errors are not easy to occur, and the accuracy of the inspection is also guaranteed, laying a good foundation for subsequent normal use.

附图说明Description of drawings

图1是本发明中信号发射机的电路原理示意图。Fig. 1 is a schematic diagram of the circuit principle of the signal transmitter in the present invention.

图2是本发明中信号接收机的电路原理示意图。Fig. 2 is a schematic diagram of the circuit principle of the signal receiver in the present invention.

图3是本发明中信号发射机和信号接收机与二次回路连接后的电路原理图。Fig. 3 is a circuit schematic diagram after the signal transmitter and the signal receiver are connected with the secondary circuit in the present invention.

具体实施方式Detailed ways

本发明涉及一种电能计量二次回路快速查线仪,该查线仪包括独立设置的信号发射机和信号接收机,信号发射机包括安装在第一壳体中的电源模块、信号发射元件、一组输出连接机构及相对应的一组发射机发光二极管,发射机发光二极管与相对应的输出连接机构连接,电源模块与信号发射元件的输入端连接,输出连接机构一端与信号发射元件的输出端连接,另一端穿过第一壳体向外伸出,信号接收机包括安装在第二壳体中的一组输入连接机构及相对应的一组接收机发光二极管,输入连接机构一端与接收机发光二极管连接,另一端穿过第二壳体向外伸出,接收机发光二极管与发射机发光二极管的数量相同且一一对应,所述的发射机发光二极管和接收机发光二极管在电路中的连接导通方向与信号发射方向相同。The invention relates to a quick line checking instrument for a secondary circuit of electric energy metering. The line checking instrument includes a signal transmitter and a signal receiver which are independently arranged, and the signal transmitter includes a power supply module installed in a first housing, a signal transmitting element, A set of output connection mechanisms and a corresponding set of transmitter light-emitting diodes, the transmitter light-emitting diodes are connected to the corresponding output connection mechanisms, the power supply module is connected to the input end of the signal emission element, and one end of the output connection mechanism is connected to the output of the signal emission element One end is connected, and the other end protrudes outward through the first casing. The signal receiver includes a set of input connection mechanisms installed in the second casing and a corresponding set of receiver light-emitting diodes. One end of the input connection mechanism is connected to the receiver The light-emitting diodes of the transmitter are connected, and the other end protrudes outward through the second housing. The number of the light-emitting diodes of the receiver and the light-emitting diodes of the transmitter are the same and correspond one by one. The light-emitting diodes of the transmitter and the light-emitting diodes of the receiver are in the circuit The conduction direction of the connection is the same as the signal transmission direction.

具体实施例,如图1和图2所示,所述的信号发射元件包括相连的方波发生器NE555和脉冲分配器CD4017,发射机发光二极管为4组并且分别与脉冲分配器CD4017的输出端连接,4组发射机发光二极管分别为LED1、LED2、LED3、LED4,接收机发光二极管分别为LED5、LED6、LED7、LED8,所有发射机发光二极管和接收机发光二极管均并联有一个单向二极管,单向二极管的导通方向与信号发射方向相反,发射机发光二极管相对应的单向二极管分别为VD1、VD2、VD3、VD4,接收机发光二极管相对应的单向二极管分别为VD5、VD6、VD7、VD8,单向二极管能够在线路中电流过大时进行分流作用,保护所对应的发光二极管不受损坏,信号发射机中还设置有与电源模块连接的开关提示机构,开关提示机构为一个发光二极管LED0和一个保护电阻串联组成,开关提示机构中发光二极管LED0的颜色与发射机发光二极管及接收机发光二极管的颜色不相同,发光二极管LED0选用直径为5mm的红色发光管,发射机发光二极管与接收机发光二极管的颜色相同,均采用直径为3mm的绿色发光管。Concrete embodiment, as shown in Fig. 1 and Fig. 2, the described signal transmitting element comprises the connected square wave generator NE555 and the pulse distributor CD4017, and the transmitter light-emitting diodes are 4 groups and respectively connected with the output ends of the pulse distributor CD4017 Connection, 4 groups of transmitter LEDs are LED1, LED2, LED3, LED4, receiver LEDs are LED5, LED6, LED7, LED8, all transmitter LEDs and receiver LEDs are connected in parallel with a one-way diode, The conduction direction of the one-way diode is opposite to the direction of signal transmission. The one-way diodes corresponding to the transmitter light-emitting diodes are VD1, VD2, VD3, and VD4, and the one-way diodes corresponding to the receiver light-emitting diodes are VD5, VD6, and VD7. , VD8, the one-way diode can shunt when the current in the line is too large, and protect the corresponding light-emitting diode from damage. The signal transmitter is also equipped with a switch prompt mechanism connected to the power module. The switch prompt mechanism is a light-emitting Diode LED0 and a protective resistor are connected in series. The color of the light-emitting diode LED0 in the switch prompt mechanism is different from the color of the transmitter light-emitting diode and the receiver light-emitting diode. The light-emitting diode LED0 is a red light-emitting tube with a diameter of 5mm. The color of the light-emitting diodes of the receiver is the same, and the green light-emitting tubes with a diameter of 3mm are used.

在三相三线电能表中使用本发明涉及的查线仪时,如图3所示,信号发射机和信号接收机接入二次回路后的电路原理图,信号接收机中的输入连接机构包括第二导线和第二线夹,第二导线一端与接收提示机构连接,另一端穿过第二壳体向外伸出并与第二线夹连接,用信号接收机中发光二极管LED5所对应的第二线夹将电能计量回路的互感器侧A、C相电流进出线夹住,信号发射机中的输出连接机构包括第一导线和第一线夹,第一导线一端与信号发射元件的输出端连接,另一端穿过第一壳体向外伸出并与第一线夹连接,用信号发射机中发光二极管LED1所对应的第一线夹将电能表侧A、C相电流进出线夹住,依次类推,其他线夹也根据相发射机发光二极管和接收机发光二极管的对应关系与二次回路其他被测回路进行连接,启动信号发射机的电源模块为方波发生器NE555提供9V电源,NE555得电工作,产生方波,LED0红色发光管闪亮,其方波上升沿触发CD4017的CP端,各Y端有译码输出,而输出端只有一个高电平循环出现,其余均为低电平,构成如下的回路:发光管LED1→被测二次回路第一根→副机电路中发光管LED5→VD6至VD8之一→另一根被测二次回路→主机VD2至VD4之一,这样,如果主机电路中的LED1被点亮,副机中的LED5也被点亮,则表示被测二次回路第一根线为“通”,其他线路的检查原理相同,对二次回路进行检测时,如果LED1-LED4有不亮者,即表示此路不通,如果LED5-LED8非顺序点亮,则表示线序有误。When using the line checking instrument involved in the present invention in the three-phase three-wire electric energy meter, as shown in Figure 3, the circuit schematic diagram after the signal transmitter and the signal receiver are connected to the secondary circuit, the input connection mechanism in the signal receiver includes The second wire and the second wire clip, one end of the second wire is connected to the receiving prompt mechanism, the other end passes through the second housing and is connected to the second wire clip, and the second wire corresponding to the light-emitting diode LED5 in the signal receiver The clip clamps the A and C phase current incoming and outgoing wires of the transformer side of the electric energy metering circuit. The output connection mechanism in the signal transmitter includes a first wire and a first wire clip. One end of the first wire is connected to the output end of the signal transmitting element. The other end protrudes outward through the first housing and is connected to the first wire clip, and the first wire clip corresponding to the light-emitting diode LED1 in the signal transmitter is used to clamp the A and C phase current incoming and outgoing wires on the side of the electric energy meter, and then By analogy, other clamps are also connected to other measured circuits of the secondary circuit according to the corresponding relationship between the phase transmitter LED and the receiver LED, and the power module of the start signal transmitter provides 9V power for the square wave generator NE555, and NE555 gets Electric work, generate a square wave, LED0 red light-emitting tube is shining, the rising edge of the square wave triggers the CP terminal of CD4017, each Y terminal has a decoding output, and only one output terminal has a high level cycle, and the rest are low level , forming the following circuit: luminous tube LED1 → the first one of the secondary circuit under test → the luminous tube LED5 in the auxiliary machine circuit → one of VD6 to VD8 → another secondary circuit under test → one of the main machine VD2 to VD4, so , if the LED1 in the host circuit is lit, and the LED5 in the auxiliary machine is also lit, it means that the first line of the secondary circuit under test is "on". The inspection principle of other lines is the same, and the secondary circuit is tested. At this time, if LED1-LED4 is not lit, it means that the road is blocked, if LED5-LED8 lights up in non-sequence, it means that the line sequence is wrong.

本发明采用的快速查线仪通过线夹将信号发射机和信号接收机连接在二次回路两端,简化了操作程序,缩短了查线的周期时间,传统的查线方式应用在三相三线电能表回路和三相四线电能表回路时的查线时间分别为12分钟和16分钟,应用本发明后的查线时间均缩短到2分钟,而且应用本发明中的快速查线仪无需接地线,判断回路中接线的连接情况是利用其它线形成回路后进行判断的,避开了接地线老化对差线准确性的影响,提高了查线的准确性,此外,该快速查线仪将线夹夹在相对应回路中,大大减少了点击端子的次数,这样就降低了误碰其他回路的安全风险。The fast wire checking instrument adopted in the present invention connects the signal transmitter and the signal receiver at both ends of the secondary circuit through wire clips, which simplifies the operation procedure and shortens the cycle time of wire checking. The traditional wire checking method is applied to three-phase three-wire The wire checking time of the electric energy meter circuit and the three-phase four-wire electric energy meter circuit are respectively 12 minutes and 16 minutes. After applying the invention, the wire inspection time is shortened to 2 minutes, and the fast wire inspection instrument of the present invention does not need to be grounded The connection of the wiring in the circuit is judged by using other lines to form a circuit, which avoids the influence of the aging of the grounding wire on the accuracy of the differential line, and improves the accuracy of the line inspection. In addition, the fast line inspection instrument will The wire clip is clamped in the corresponding circuit, which greatly reduces the number of clicks on the terminal, thus reducing the safety risk of accidentally touching other circuits.

Claims (7)

1. an electric energy metering secondary fast line inspection instrument, it is characterized in that: this wire searcher comprises signal transmitter and the signal receiver of independent setting, signal transmitter comprises the power module be arranged in the first housing, signal radiated element, one group exports bindiny mechanism and corresponding one group of transmitter light emitting diode, transmitter light emitting diode connects with corresponding output bindiny mechanism, power module is connected with the input end of signal radiated element, export bindiny mechanism one end to be connected with the output terminal of signal radiated element, the other end is protruding through the first housing, signal receiver comprises a group of being arranged in the second housing and inputs bindiny mechanism and corresponding one group of receiver light emitting diode, input bindiny mechanism one end is connected with receiver light emitting diode, the other end is protruding through the second housing, receiver light emitting diode and one_to_one corresponding identical with the quantity of transmitter light emitting diode, described transmitter light emitting diode and receiver light emitting diode connection conducting direction is in circuit identical with signal transmit direction.
2. a kind of electric energy metering secondary fast line inspection instrument according to claim 1, it is characterized in that: described signal radiated element comprises connected square-wave generator NE555 and pulsqe distributor CD4017, transmitter light emitting diode is 4 groups and is connected with the output terminal of pulsqe distributor CD4017 respectively, 4 groups of transmitter light emitting diodes are respectively LED1, LED2, LED3, LED4, and corresponding receiver light emitting diode is respectively LED5, LED6, LED7, LED8.
3. a kind of electric energy metering secondary fast line inspection instrument according to claim 1, it is characterized in that: described all transmitter light emitting diodes and receiver light emitting diode are all parallel with a unilateral diode, and the conducting direction of unilateral diode is contrary with signal transmit direction.
4. a kind of electric energy metering secondary fast line inspection instrument according to claim 1; it is characterized in that: be also provided with the switch prompting mechanism be connected with power module in described signal transmitter, switch prompting mechanism is that a LED 0 and a protective resistance are composed in series.
5. a kind of electric energy metering secondary fast line inspection instrument according to claim 4, is characterized in that: the color of described LED 0 is not identical with the color of transmitter light emitting diode and receiver light emitting diode.
6. a kind of electric energy metering secondary fast line inspection instrument according to claim 1, is characterized in that: described transmitter light emitting diode is identical with the color of receiver light emitting diode.
7. a kind of electric energy metering secondary fast line inspection instrument according to claim 1, it is characterized in that: described output bindiny mechanism comprises the first wire and the first wire clamp, first wire one end is connected with the output terminal of signal radiated element, the other end is protruding and be connected with the first wire clamp through the first housing, described input bindiny mechanism comprises the second wire and the second wire clamp, second wire one end is connected with reception prompting mechanism, and it is protruding and be connected with the second wire clamp that the other end passes the second housing.
CN201510603421.8A 2015-09-21 2015-09-21 Electric energy measuring secondary circuit rapid line inspection instrument Pending CN105203905A (en)

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CN113933759A (en) * 2021-10-25 2022-01-14 国网山东省电力公司临沂供电公司 Quick Wire Check Tool for Meter Installation and Wiring

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