CN204858747U - Long -range combined floodgate system of earth leakage protection circuit breaker is qualified for next round of competitions in platform district - Google Patents

Abstract

The utility model discloses a long -range combined floodgate system of earth leakage protection circuit breaker is qualified for next round of competitions in platform district, including concentrator, earth leakage protection circuit breaker, its characterized in that: still include a single -phase intelligent ammeter, this single -phase intelligent ammeter passes through RS485 bus connection with the concentrator, an order of closing a floodgate for receiving the main website sends, the power terminal outgoing lines that perhaps single -phase intelligent ammeter is connected respectively to single -phase intelligent ammeter's double bounce floodgate control contact foot and two closing contact feet of earth leakage protection circuit breaker and the power incoming wire terminal of earth leakage protection circuit breaker are connected, a separating brake or combined floodgate for controlling the earth leakage protection circuit breaker, the position sigual foot of earth leakage protection circuit breaker is through remote signalling line access concentrator's remote signalling terminal, be used for reporting the main website with the information of shifting. The utility model discloses the platform can be realized and the long -range combined floodgate of earth leakage protection circuit breaker of being qualified for the next round of competitions is distinguished.

Description

Remote Closing System of Leakage Protection Circuit Breaker for Outgoing Lines in Taiwan Area

technical field

The utility model relates to a remote closing system of an outlet leakage protection circuit breaker in a station area.

Background technique

The leakage protection circuit breaker in the agricultural station area trips frequently, and most of the trips are caused by short-term ground faults. At present, we can only passively rely on the 95598 phone to understand the trip situation, and the emergency repair work is often completed by the agricultural electrician on site. , The main time is delayed on the road, prolonging the power outage time and reducing the reliability of power supply.

In response to this problem, some companies have developed a dedicated control system and installed a dedicated control terminal on site. The control terminal collects the working status of the leakage protection circuit breaker through the 485 interface, and sends a tripping and closing command through the 485 interface to realize leakage protection. The remote control of the circuit breaker has the following disadvantages in this way:

1. It is necessary to establish a special control system, which requires a large investment;

2. The on-site space is small, and it is difficult to install a control terminal;

3. The operation of the control terminal requires additional communication fees;

4. Controlling the leakage protection circuit breaker through the 485 interface involves the analysis of the communication protocol. The leakage protection circuit breakers of different manufacturers have different communication protocols. Some early leakage protection circuit breakers have no communication interface, so they have poor adaptability.

Utility model content

The purpose of the utility model is to provide a small investment, low operating cost and strong adaptability remote closing system of the outlet leakage protection circuit breaker.

The utility model provides the remote closing system of the outlet leakage protection circuit breaker, including a concentrator, a leakage protection circuit breaker, and a single-phase smart energy meter, which is connected to the concentrator through the RS485 bus. It is used to receive the closing command from the main station, and the two tripping control contact pins of the single-phase smart energy meter are respectively connected with the two closing contact pins of the leakage protection circuit breaker or the power outlet terminal of the single-phase smart energy meter is connected to the leakage current terminal. The power input terminal of the protection circuit breaker is connected to control the leakage protection circuit breaker. The position signal pin of the leakage protection circuit breaker is connected to the remote signal terminal of the concentrator through the remote signal line, and is used to report the displacement information to the master station.

A leakage protection circuit breaker is equipped with a single-phase smart energy meter. The number of remote signaling terminals of the concentrator shall not be less than the number of leakage protection circuit breakers.

The leakage protection circuit breaker is an integrated leakage protection circuit breaker, and the two trip control contact pins of the single-phase smart energy meter are respectively connected with the two closing contact pins of the leakage protection circuit breaker.

The leakage protection circuit breaker is a split type leakage protection circuit breaker, the split type leakage protection circuit breaker is composed of a leakage relay and an AC contactor, the power input terminal is on the leakage relay, and the working power of the AC contactor is provided by the leakage relay, The position signal pin is controlled by an AC contactor.

The utility model makes full use of the existing electric energy information collection system, and each leakage protection circuit breaker is equipped with a single-phase intelligent electric energy meter, and the leakage protection circuit breaker is controlled by controlling the on-off of the corresponding single-phase intelligent meter through the electric energy information collection system. Closing, so as to achieve the purpose of remote closing. The utility model has the following advantages:

1. Relying on the existing power information collection system, there is no additional communication fee;

2. Only add single-phase smart energy meters according to the number of leakage protection circuit breakers, small size, low investment, simple construction and direct control of closing with electrical nodes, no need to analyze communication protocols, which improves the adaptability to different types of leakage protection circuit breakers on site sex;

3. The smart meter only controls the closing node of the leakage protection circuit breaker, and does not control the tripping node. Therefore, remote operation will not cause tripping, ensuring the safety of the operation;

4. The acquisition system is mature and stable in controlling the opening and closing of the smart meter, which ensures the reliability of the control of the leakage protection circuit breaker.

Description of drawings

Fig. 1 is a circuit block diagram of Embodiment 1 of the present utility model.

Fig. 2 is a connection diagram of each terminal in Fig. 1 .

Fig. 3 is a circuit block diagram of Embodiment 2 of the present utility model. Fig. 2 is a connection diagram of each terminal in Fig. 1 .

Fig. 4 is a connection diagram of each terminal in Fig. 3 .

Fig. 5 is a circuit block diagram of Embodiment 3 of the present utility model.

Reference signs: concentrator Ⅰ, leakage protection circuit breaker Ⅱ, single-phase smart energy meter Ⅲ, AC contactor Ⅴ, leakage relay Ⅳ.

Detailed ways

Embodiment 1: Figure 1 and Figure 2 reflect the structure of Embodiment 1 of the present utility model. It can be seen from these two figures that the present invention has a concentrator I, a leakage protection circuit breaker II, and a single-phase smart energy meter III. In this embodiment, the leakage protection circuit breaker II adopts an integrated leakage protection circuit breaker. The 29 pins and 30 pins of the RS485 interface of the concentrator Ⅰ are connected with the 11 pins and 12 pins of the RS485 interface of the single-phase smart energy meter through the RS485 bus, and the remote signal terminals 13 and 14 of the concentrator Ⅰ are connected with the leakage protection circuit breaker through the remote signal line The position signal pin of II is connected, and the two tripping control contact pins 5 and 6 of the single-phase smart energy meter III are respectively connected with the two closing contact pins of the leakage protection circuit breaker II. The master station sends the opening command to the concentrator Ⅰ, and the concentrator Ⅰ transmits the opening command to the single-phase smart energy meter through the 29-pin and 30-pin RS485 bus; Point 5 and 6 pins are closed. The master station sends the switch-on command again, and after the command is transmitted to the single-phase smart energy meter III, its trip control contact pin 5 and pin 6 are disconnected, and the jump signal is sent to the switch-on contact of the leakage protection circuit breaker to trigger the leakage The protective circuit breaker is closed; the position signal pin of the leakage protection circuit breaker is connected to the remote signal terminals 13 and 14 of the concentrator through the remote signal line. After the concentrator I detects the remote signal displacement, it will actively report the displacement information to the acquisition master stand. So as to achieve remote closing.

Embodiment 2: FIG. 3 and FIG. 4 reflect the circuit structure of another embodiment of the present invention. It can be seen from these two figures that this embodiment still has a concentrator I, a leakage protection circuit breaker II, and a single-phase smart energy meter III. The difference from the embodiment is that the leakage protection circuit breaker II uses a split type leakage protection circuit breaker Split type leakage protection circuit breaker has leakage relay Ⅳ and AC contactor Ⅴ, the power input terminal is on leakage relay Ⅳ, the working power of AC contactor Ⅴ is provided by leakage relay Ⅳ, and the position signal pin is controlled by AC contactor. The 29 pins and 30 pins of the RS485 interface of the concentrator Ⅰ and the 11 pins and 12 pins of the RS485 interface of the single-phase smart energy meter are still connected through the RS485 bus, and the remote signal terminals 13 and 14 of the concentrator Ⅰ are in contact with the AC through the remote signal line The position signal pin on the device Ⅴ is connected, the power outlet terminal of the single-phase smart energy meter Ⅲ is connected to the power input terminal of the leakage protection circuit breaker Ⅱ, the power input terminal of the leakage protection circuit breaker Ⅱ is on the leakage relay Ⅳ, and the leakage relay The power outlet on IV is connected to AC contactor V to provide working power for AC contactor V. The master station sends the opening command to the concentrator, and the concentrator transmits the opening command to the electric energy meter through the 485 bus of terminals 29 and 30. After the energy meter receives the switch-off command, its power outlet terminal 2 and 4 pins lose power, cut off the power supply of the leakage relay Ⅳ, and trip the split-type leakage protection circuit breaker Ⅱ. The master station sends a closing command again, and after the command is transmitted to the single-phase smart energy meter III, its power outlet terminal 2 and terminal 4 are powered on, and the leakage relay resumes power supply. Terminal 4 and terminal 5 of the leakage relay output 5V DC power, which triggers the closing of the AC contactor. The position signal of the AC contactor is connected to the remote signal input terminal 13 and terminal 14 of the concentrator I through the remote signal line. After the concentrator I detects the displacement of the remote signal, it will actively report the displacement information to the acquisition master station. So as to achieve remote closing.

Implementation Mode 3: This is an implementation mode for remote closing of two outlets at the same time. As shown in Figure 5, a leakage protection circuit breaker must be equipped with a one-way smart energy meter, and the number of remote signaling terminals of the concentrator must not exceed Less than the number of leakage protection circuit breakers, leakage protection circuit breakers can be either integrated or split. For the concentrator, the current 13 editions have four remote signal inputs, so the remote closing of four circuits can be realized at present with the utility model system.

Claims (7)

1. A remote closing system for a leakage protection circuit breaker in a station area, comprising a concentrator and a leakage protection circuit breaker, characterized in that it also includes a single-phase smart energy meter, which is connected to the concentrator through the RS485 bus, It is used to receive the opening or closing command from the master station, and the two tripping control contact pins of the single-phase smart energy meter are respectively connected to the two closing contact pins of the leakage protection circuit breaker or the power outlet of the single-phase smart energy meter The terminal is connected with the power input terminal of the leakage protection circuit breaker, and is used to control the opening or closing of the leakage protection circuit breaker. The displacement information is reported to the master station. 2. The remote closing system of the leakage protection circuit breaker for outgoing lines in the station area according to claim 1, characterized in that one leakage protection circuit breaker is equipped with a single-phase smart energy meter. 3. The remote closing system of leakage protection circuit breakers for outgoing lines in the station area according to claim 1 or 2, characterized in that the number of remote signaling terminals of the concentrator is not less than the number of leakage protection circuit breakers. 4. According to claim 1 or 2, the remote closing system of the leakage protection circuit breaker for outgoing lines in the station area is characterized in that the leakage protection circuit breaker is an integrated leakage protection circuit breaker, and the two tripping control contacts of the single-phase smart energy meter The point pins are respectively connected with the two closing contact pins of the leakage protection circuit breaker. 5. According to claim 1 or 2, the remote closing system of the leakage protection circuit breaker for outgoing lines in the station area is characterized in that the leakage protection circuit breaker is a split type leakage protection circuit breaker, and the split type leakage protection circuit breaker is composed of a leakage relay Composed with an AC contactor, the power input terminal is on the leakage relay, the working power of the AC contactor is provided by the leakage relay, and the AC contactor controls the position signal pin. 6. The remote closing system of the leakage protection circuit breaker for outgoing lines in the station area according to claim 3, characterized in that the leakage protection circuit breaker is an integrated leakage protection circuit breaker, and the two tripping control contact pins of the single-phase smart energy meter They are respectively connected to the two closing contact pins of the leakage protection circuit breaker. 7. The remote closing system of the leakage protection circuit breaker for outgoing lines in the station area according to claim 3, characterized in that the leakage protection circuit breaker is a split type leakage protection circuit breaker, and the split type leakage protection circuit breaker is composed of a leakage relay and an AC The contactor is composed of the power input terminal on the leakage relay, the working power of the AC contactor is provided by the leakage relay, and the AC contactor controls the position signal pin.