Remote alarm communication device for low-voltage electric leakage reclosing switch of comprehensive distribution box

Abstract

The utility model discloses a remote alarm communication device for a low-voltage electric leakage reclosing switch of a comprehensive distribution box. Comprising an inlet wire knife fuse switch QS, current transformers 1LHa-c, current transformers 2LHa-c, a residual current operated circuit breaker QF1, a residual current operated circuit breaker QF2, a residual current operated circuit breaker QF3, a capacitor molded case circuit breaker QF4, a surge protector SPD, an intelligent power distribution terminal BK, an intelligent capacitor C1, an intelligent capacitor C2, an intelligent capacitor C3 and lightning arresters 1FAa-c. The remote control system can support four-remote functions of remote signaling, remote measurement, remote control and remote regulation, supports a DL / T645 protocol and a Modbus protocol, supports on-line remote upgrading, and is convenient to maintain and upgrade.

Description

Technical Field

[0001] The utility model relates to the technical field of remote alarm communication devices for low-voltage leakage reclosing switches, in particular to the technical field of remote alarm communication devices for low-voltage leakage reclosing switches in comprehensive distribution boxes.

Background Art

[0002] Electric power resources are an important energy source for economic construction and people's livelihood. With the continuous development of China's economy, the power gap is also getting larger and larger. It is necessary to accurately understand the operation status of each circuit breaker in the current distribution box. Firstly, the load can be reasonably distributed in a timely manner according to the current operation status. Secondly, in case of emergencies, pre-inspections can be carried out based on its real-time data, such as maintenance, faults, etc.

Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems in the prior art and propose a remote alarm communication device for a low-voltage leakage reclosing switch in a comprehensive distribution box, which can support the four remote functions of remote signaling, remote measurement, remote control, and remote adjustment, support the DL / T645 protocol and the Modbus protocol, and support online remote upgrade, facilitating maintenance and upgrade.

[0004] To achieve the above purpose, the utility model proposes a remote alarm communication device for a low-voltage leakage reclosing switch in a comprehensive distribution box, including an incoming line knife-fuse switch QS, current transformers 1LHa-c, current transformers 2LHa-c, residual current operated circuit breakers QF1, residual current operated circuit breakers QF2, residual current operated circuit breakers QF3, capacitor molded case circuit breakers QF4, surge protectors SPD, intelligent distribution terminals BK, intelligent capacitors C1, intelligent capacitors C2, intelligent capacitors C3, and lightning arresters 1FAa-c. One end of the incoming line knife-fuse switch QS is connected to the current transformers 1LHa-c, the current transformers 1LHa-c are connected to the cable incoming line, the other end of the incoming line knife-fuse switch QS is connected to the current transformers 2LHa-c, the current transformers 2LHa-c are respectively connected to the residual current operated circuit breakers QF1, residual current operated circuit breakers QF2, residual current operated circuit breakers QF3, capacitor molded case circuit breakers QF4, surge protectors SPD, and intelligent distribution terminals BK. The capacitor molded case circuit breakers QF4 are respectively connected to the intelligent capacitors C1, intelligent capacitors C2, intelligent capacitors C3, and lightning arresters 1FAa-c. The intelligent distribution terminals BK are respectively connected to the intelligent capacitors C1, intelligent capacitors C2, intelligent capacitors C3, and the cable incoming line. The residual current operated circuit breakers QF1, residual current operated circuit breakers QF2, residual current operated circuit breakers QF3, intelligent capacitors C1, intelligent capacitors C2, and intelligent capacitors C3 are all internally provided with remote communication modules.

[0005] Preferably, the current transformers 1LHa-c are connected to the concentrator JZQ and the watt-hour meter KHB.

[0006] Preferably, the residual current operated circuit breakers QF1, QF3 and QF2 are arranged in parallel with each other.

[0007] Preferably, the intelligent capacitors C1 and C2 are hybrid compensation intelligent capacitors, and the intelligent capacitor C3 is a shunt compensation intelligent capacitor.

[0008] Preferably, the intelligent power distribution terminal BK is connected to the leakage recloser body. The leakage recloser body includes a tripping point 3, a closing point 4, a common point 5, communication A, communication B, signal auxiliary 6 and signal auxiliary 7. The tripping point 3, the closing point 4, the common point 5, communication A, communication B, signal auxiliary 6 and signal auxiliary 7. The communication A and the communication B are respectively connected to the communication line 485A and the communication line 485B, and the communication line 485A and the communication line 485B are connected to the terminal block.

[0009] Advantages of the utility model: By integrating the incoming line knife fuse switch QS, current transformers 1LHa-c, current transformers 2LHa-c, residual current operated circuit breaker QF1, residual current operated circuit breaker QF2, residual current operated circuit breaker QF3, capacitor molded case circuit breaker QF4, surge protector SPD, intelligent power distribution terminal BK, intelligent capacitors C1, C2, C3 and lightning arrester 1FAa-c, through experimental optimization, a high-performance 32-bit ARM microprocessor is adopted for real-time signal processing and intelligent control, with LCD Chinese / English display, friendly human-machine interface and easy operation; residual current (leakage) protection, the residual current gear can be set online, with reclosing function; real-time monitoring and tracking of the residual current in the line, automatic adjustment of the gear to ensure the commissioning rate and reliability of the product, long-delay, short-delay and instantaneous three-stage protection, using electronic tripping, independent of the power supply voltage; with high breaking capacity to ensure the reliability of line short-circuit protection, overvoltage protection, undervoltage protection, open-phase protection, open-neutral protection; protection functions and parameters can be set and modified online; real-time display of the residual current in the line, three-phase power supply voltage and load current; real-time measurement of parameters such as active power, reactive power, apparent power and power factor; identification, display, storage, query and deletion of tripping types (residual current, blocking, overload, undervoltage, overvoltage, open-phase, open-neutral, etc.); support for four remote functions of remote signaling, remote measurement, remote control and remote adjustment; HPLC pluggable module and micro-power Bluetooth wireless communication; metering accuracy from 0.05In to 1.2In can reach class 1.0; real-time monitoring of the temperature of the incoming line terminal busbar (optional); cumulative three-phase active power consumption; time control, cost control and other modes are available, with better flexibility in application; support for DL / T645 protocol and Modbus protocol, and automatic identification; support for online remote upgrade, facilitating maintenance and upgrade; accuracy level: the accuracy of current and voltage can reach up to 0.5s level at most; the accuracy of active and reactive power can reach up to class 1 at most, and the accuracy of residual current can reach up to class 2 at most, meeting the requirements of national standards and domestic power companies for remote monitoring, alarm and communication.

[0010] The features and advantages of the utility model will be described in detail through embodiments in conjunction with the accompanying drawings.

Description of the Drawings

[0011] Figure 1 is the circuit structure diagram of a remote alarm communication device for a low-voltage leakage reclosing switch of a comprehensive distribution box of the utility model;

[0012] Figure 2 is the circuit structure diagram of the leakage reclosing switch body of a remote alarm communication device for a low-voltage leakage reclosing switch of a comprehensive distribution box of the utility model.

Detailed Embodiment

[0013] Refer to Figure 1 and Figure 2, a remote alarm communication device for a low-voltage leakage reclosing switch of a comprehensive distribution box of the utility model, includes an incoming line knife fuse switch QS, current transformers 1LHa-c, current transformers 2LHa-c, residual current operated circuit breakers QF1, residual current operated circuit breakers QF2, residual current operated circuit breakers QF3, capacitor molded case circuit breakers QF4, surge protectors SPD, intelligent distribution terminals BK, intelligent capacitors C1, intelligent capacitors C2, intelligent capacitors C3 and lightning arresters 1FAa-c. One end of the incoming line knife fuse switch QS is connected to the current transformers 1LHa-c, the current transformers 1LHa-c are connected to the cable incoming line, the other end of the incoming line knife fuse switch QS is connected to the current transformers 2LHa-c, the current transformers 2LHa-c are respectively connected to the residual current operated circuit breakers QF1, residual current operated circuit breakers QF2, residual current operated circuit breakers QF3, capacitor molded case circuit breakers QF4, surge protectors SPD and intelligent distribution terminals BK, the capacitor molded case circuit breakers QF4 are respectively connected to the intelligent capacitors C1, intelligent capacitors C2, intelligent capacitors C3 and lightning arresters 1FAa-c, the intelligent distribution terminals BK are respectively connected to the intelligent capacitors C1, intelligent capacitors C2, intelligent capacitors C3 and the cable incoming line. The residual current operated circuit breakers QF1, residual current operated circuit breakers QF2, residual current operated circuit breakers QF3, intelligent capacitors C1, intelligent capacitors C2 and intelligent capacitors C3 are all built-in with remote communication modules. The current transformers 1LHa-c are connected to the concentrator JZQ and the electric energy meter KHB. The residual current operated circuit breakers QF1, residual current operated circuit breakers QF3 and residual current operated circuit breakers QF2 are arranged in parallel with each other. The intelligent capacitors C1 and intelligent capacitors C2 are hybrid compensation intelligent capacitors, the intelligent capacitor C3 is a common compensation intelligent capacitor. The intelligent distribution terminal BK is connected to the leakage reclosing body. The leakage reclosing body includes a tripping point 3, a closing point 4, a common point 5, communication A, communication B, a remote signal auxiliary 6 and a remote signal auxiliary 7. The tripping point 3, the closing point 4, the common point 5, communication A, communication B, the remote signal auxiliary 6 and the remote signal auxiliary 7. The communication A and the communication B are respectively connected to the communication line 485A and the communication line 485B. The communication line 485A and the communication line 485B are connected to the terminal block.

[0014] The utility model combines an incoming line knife fuse switch QS, current transformers 1LHa-c, current transformers 2LHa-c, residual current operated circuit breakers QF1, QF2, QF3, a capacitor molded case circuit breaker QF4, a surge protector SPD, an intelligent power distribution terminal BK, intelligent capacitors C1, C2, C3 and lightning arresters 1FAa-c. Through experimental optimization, it adopts a high-performance 32-bit ARM microprocessor to perform signal processing and intelligent control in real time, with liquid crystal Chinese / English display, a user-friendly man-machine interface and simple operation; residual current (leakage) protection, the residual current gear can be set online, and it has a reclosing function; it can monitor and track the residual current of the line in real time, automatically adjust the gear to ensure the commissioning rate and reliability of the product, with long-delay, short-delay and instantaneous three-stage protection, using electronic tripping, independent of the power supply voltage; it has a high breaking capacity to ensure the reliability of line short-circuit protection, overvoltage protection, undervoltage protection, open-phase protection, open-neutral protection; the protection functions and parameters can be set and modified online; the residual current of the line, three-phase power supply voltage and load current are displayed in real time; parameters such as active power, reactive power, apparent power and power factor are measured in real time; the tripping type (residual current, blocking, overload, undervoltage, overvoltage, open-phase, open-neutral, etc.) can be identified, displayed, and stored, queried and deleted; it supports four remote functions of remote signaling, remote measurement, remote control and remote adjustment; an HPLC pluggable module and a micro-power Bluetooth wireless communication; the metering accuracy can reach 1.0 level from 0.05In to 1.2In; the temperature of the incoming line terminal busbar is monitored in real time (optional); the three-phase active power consumption is accumulated; time control, cost control and other modes are optional, and the application is more flexible; it supports DL / T645 protocol and Modbus protocol and can automatically identify them; it supports online remote upgrade for easy maintenance and upgrade; accuracy level: the accuracy of current and voltage can reach up to 0.5s level at most; the accuracy of active and reactive power can reach up to 1 level at most, and the residual current can reach up to 2 levels at most, meeting the requirements of national standards and domestic power companies for remote monitoring, alarm and communication.

[0015] The above embodiments are illustrative of the present utility model rather than restrictive thereof, and any simple transformation of the present utility model falls within the protection scope of the present utility model.

Claims

1. A remote alarm communication device for a low-voltage leakage reclosing switch of an integrated distribution box, characterized in that: The invention comprises an incoming knife fuse switch QS, a current transformer 1LHa~c, a current transformer 2LHa~c, a residual current operated circuit breaker QF1, a residual current operated circuit breaker QF2, a residual current operated circuit breaker QF3, a capacitor molded case circuit breaker QF4, a surge protector SPD, an intelligent power distribution terminal BK, an intelligent capacitor C1, an intelligent capacitor C2, an intelligent capacitor C3 and a lightning arrester 1FAa~c, wherein one end of the incoming knife fuse switch QS is connected to the current transformer 1LHa~c, and the current transformer 1LHa~c is connected to the cable incoming line, and the other end of the incoming knife fuse switch QS is connected to the current transformer 2LHa~c, and the current transformer 2LHa~c is respectively connected to the residual current operated circuit breaker QF1, the residual current operated circuit breaker QF2, the residual current operated circuit breaker QF3, the capacitor molded case circuit breaker QF4, the surge protector SPD, the intelligent power distribution terminal BK, the intelligent capacitor C1, the intelligent capacitor C2, the intelligent capacitor C3 and the lightning arrester 1FAa~c. The circuit breaker QF1, the residual current operated circuit breaker QF2, the residual current operated circuit breaker QF3, the capacitor molded case circuit breaker QF4, the surge protector SPD and the intelligent distribution terminal BK are connected. The capacitor molded case circuit breaker QF4 is respectively connected to the intelligent capacitor C1, the intelligent capacitor C2, the intelligent capacitor C3 and the lightning arrester 1FAa~c. The intelligent distribution terminal BK is respectively connected to the intelligent capacitor C1, the intelligent capacitor C2, the intelligent capacitor C3 and the cable incoming line. The residual current operated circuit breaker QF1, the residual current operated circuit breaker QF2, the residual current operated circuit breaker QF3, the intelligent capacitor C1, the intelligent capacitor C2 and the intelligent capacitor C3 all have built-in remote communication modules.

2. A remote alarm communication device for low-voltage leakage reclosing switch of an integrated distribution box as claimed in claim 1, characterized in that: The current transformer 1LHa~c is connected to the concentrator JZQ and the electric energy meter KHB.

3. A remote alarm communication device for low-voltage leakage reclosing switch of an integrated distribution box as claimed in claim 1, characterized in that: The residual current operated circuit breaker QF1, the residual current operated circuit breaker QF3 and the residual current operated circuit breaker QF2 are arranged in parallel with each other.

4. A remote alarm communication device for low-voltage leakage reclosing switch of an integrated distribution box as claimed in claim 1, characterized in that: The smart capacitor C1 and the smart capacitor C2 are mixed-compensation smart capacitors, and the smart capacitor C3 is a co-compensation smart capacitor.

5. A remote alarm communication device for low-voltage leakage reclosing switch of an integrated distribution box as claimed in claim 1, characterized in that: The intelligent distribution terminal BK is connected to the leakage reclosing switch body, and the leakage reclosing switch body includes an opening point 3, a closing point 4, a common point 5, communication A, communication B, remote signaling auxiliary 6 and remote signaling auxiliary 7. The opening point 3, the closing point 4, the common point 5, communication A, communication B, remote signaling auxiliary 6 and remote signaling auxiliary 7, the communication A and communication B are respectively connected to the communication line 485A and the communication line 485B, and the communication line 485A and the communication line 485B are connected to the terminal block.

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