阅读说明：本技术 一种配电网单相接地报警系统及方法 (Single-phase grounding alarm system and method for power distribution network ) 是由 毕宏伟 李文波 郝晓军 郑野 周都利 刘娇健 毛耀红 于 2021-09-08 设计创作，主要内容包括：本发明提供一种配电网单相接地报警系统,包括智能配电网单相接地综合保护装置、http服务器、无线通信模块、终端app,云服务平台,无线通信模块用于智能配电网单相接地综合保护装置和云服务平台之间数据传输,http服务器连接云服务平台且终端app连接http服务器。本发明通过智能配电网单相接地综合保护装置控制对应相开关合闸与故障点形成并联,转移电流,消除了故障点的电弧,进而避免了事故,同时通过终端app及时获取配电网单相接地信息,便于快速及时解决故障,保障设备和人身安全。(The invention provides a power distribution network single-phase grounding alarm system which comprises an intelligent power distribution network single-phase grounding comprehensive protection device, an http server, a wireless communication module, a terminal app and a cloud service platform, wherein the wireless communication module is used for data transmission between the intelligent power distribution network single-phase grounding comprehensive protection device and the cloud service platform, the http server is connected with the cloud service platform, and the terminal app is connected with the http server. According to the intelligent power distribution network single-phase grounding comprehensive protection device, the corresponding phase switch is controlled to be switched on and connected in parallel with the fault point through the intelligent power distribution network single-phase grounding comprehensive protection device, current is transferred, electric arcs of the fault point are eliminated, accidents are further avoided, single-phase grounding information of the power distribution network is timely acquired through the terminal app, faults are conveniently and timely solved, and equipment and personal safety are guaranteed.)

1. The power distribution network single-phase grounding alarm system is characterized by comprising an intelligent power distribution network single-phase grounding comprehensive protection device, an http server, a wireless communication module, a terminal app and a cloud service platform, wherein the wireless communication module is used for data transmission between the intelligent power distribution network single-phase grounding comprehensive protection device and the cloud service platform, the http server is connected with the cloud service platform, and the terminal app is connected with an http server;

the intelligent power distribution network single-phase grounding comprehensive protection device is used for signal generation, collection and resetting, and adopts a parallel shunt principle to protect;

the wireless communication module is used for collecting fault signals sent by the intelligent power distribution network single-phase grounding comprehensive protection device and uploading the fault signals to a cloud service platform;

the terminal app is used for receiving fault signals, alarming, storing and inquiring fault information, reporting operation logs, managing personnel and binding equipment;

the http server is used for providing an http interface for the terminal app to be connected with the cloud service platform;

the cloud service platform is used for fault data storage, equipment management data storage, personnel information storage and log storage.

2. The power distribution network single-phase grounding alarm system according to claim 1, wherein when a single-phase grounding fault occurs, the intelligent power distribution network single-phase grounding comprehensive protection device controls the corresponding phase switch to be switched on and connected with a grounding network, and the intelligent power distribution network single-phase grounding comprehensive protection device is connected with a fault point in parallel.

3. The power distribution network single-phase grounding alarm system as claimed in claim 2, wherein the intelligent power distribution network single-phase grounding comprehensive protection device is provided with an arc extinction device, the arc extinction device is used for eliminating an arc at a fault point, and the arc extinction device diverts current which originally passes through the fault point.

4. The power distribution network single-phase grounding alarm system as claimed in claim 2, wherein the intelligent power distribution network single-phase grounding comprehensive protection device is connected with a low impedance transformer, the low impedance transformer is provided with a signal generator, the signal generator injects a special signal for fault location and fault automatic recovery, and an intermediate signal generated by fault location is uploaded to a cloud service platform through the wireless communication module.

5. The power distribution network single-phase grounding alarm system of claim 1, wherein the cloud service platform adopts a Springboot + mybatisPlus technology to realize two-in-one of an http interface service and a socket communication service, the http service and the socket communication service are arranged in a project frame and are started to operate simultaneously by one key, and the socket communication service is used for establishing connection between the wireless communication module and the cloud service platform.

6. The power distribution network single-phase grounding alarm system of claim 5, wherein data stored in the cloud service platform is cleaned regularly and the time interval is three months, and the terminal app obtains data from the current time to the previous day through the http interface.

7. The power distribution network single-phase grounding alarm system of claim 1, wherein the terminal app is developed by adopting a constant voltage loss android, the terminal app is provided with a network setting function, a message information automatic adding function and the like, and the terminal app can also view a signal standard list and a data statistical chart.

8. The single-phase grounding alarm system for the power distribution network of claim 7, wherein the terminal app is provided with a message pushing function and a reminding function, and the reminding function is provided with a warning tone and a vibration alarm.

9. The system of claim 1, wherein the terminal app writes a code layer using MVC technology, the terminal app adds a signal protocol, signals of the terminal app are classified and counted automatically, and signal data are displayed on the terminal app.

10. An operation mode of the single-phase grounding alarm system of the power distribution network according to claim 1, characterized by comprising the following specific operation steps:

s1, the single-phase grounding alarm system injects a special frequency signal into the system through the signal generator, the low-impedance transformer is connected with the dual-frequency power supply, and the terminal app is provided with a heartbeat inquiry acquisition data, and the heartbeat frequency is once every 10 seconds;

s2, when the single-phase grounding fails, fault location is carried out on a special frequency signal sent by the signal generator, the wireless communication module collects an intermediate signal generated by locating the fault, fault point information is uploaded to the cloud service platform through socket communication service, and the cloud service platform analyzes and stores data;

s3, opening the terminal app, acquiring signal data by the terminal app through http polling and analyzing and processing the signal data, and if the signal data is an instantaneous fault, recording fault information and forming a log report by the terminal app; if the fault is permanent, the terminal app pushes a fault message and pops up an unread message mark at the upper right corner of the terminal app;

s4, when the terminal app pushes the fault information and is not read, the terminal app sends out a ring alarm or a vibration alarm until the fault information is read and the terminal app touches the alarm;

and S5, processing when the operator reaches a fault point according to the fault information, sending fault removing information after the single-phase grounding alarm system monitors and clears the fault in real time, or sending ring alarm or vibration alarm by the terminal app at regular time.

Technical Field

The invention relates to the technical field of intelligent power distribution network safety, in particular to a power distribution network single-phase grounding alarm system and method.

Background

The single-phase earth fault is the most common fault of a power distribution system, accounts for more than 80% of the total number of power distribution network accidents, and mostly occurs in humid and rainy weather. Due to a plurality of factors such as tree obstacles, single-phase breakdown of insulators on distribution lines, single-phase line breakage, small animal harm and the like. The single-phase grounding not only influences the normal power supply of users, but also can generate overvoltage, burn out equipment and even cause interphase short circuit to enlarge accidents.

At present, the development pace of the power industry in China is accelerated continuously, the structure of the power distribution network is more complex, and the scale is increased continuously, so that the probability of single-phase earth faults of the power distribution network is further increased. Under such background, how to carry out single-phase earth fault location fast, accurately, reduce regional power failure scope, in time resume the distribution network power supply, improve distribution network power supply stability and reliability and have important meaning.

In the prior art, a ground fault indicator is generally used, but a single-phase ground fault of a power grid often occurs, but the ground fault indicator does not react, so that the problem of power distribution network fault location cannot be satisfactorily solved, and the rapid processing of the single-phase ground fault is influenced.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides a power distribution network single-phase grounding alarm system and a power distribution network single-phase grounding alarm method.

The invention provides the following technical scheme:

the power distribution network single-phase grounding alarm system comprises an intelligent power distribution network single-phase grounding comprehensive protection device, an http server, a wireless communication module, a terminal app and a cloud service platform, wherein the wireless communication module is used for data transmission between the intelligent power distribution network single-phase grounding comprehensive protection device and the cloud service platform, the http server is connected with the cloud service platform, and the terminal app is connected with the http server;

the intelligent power distribution network single-phase grounding comprehensive protection device is used for signal generation, collection and resetting, and adopts a parallel shunt principle to protect;

the wireless communication module is used for collecting fault signals sent by the intelligent power distribution network single-phase grounding comprehensive protection device and uploading the fault signals to a cloud service platform;

the terminal app is used for receiving fault signals, alarming, storing and inquiring fault information, reporting operation logs, managing personnel and binding equipment;

the http server is used for providing an http interface for the terminal app to be connected with the cloud service platform;

the cloud service platform is used for fault data storage, equipment management data storage, personnel information storage and log storage.

Preferably, when a single-phase earth fault occurs, the intelligent distribution network single-phase earth comprehensive protection device controls the corresponding phase switch to be switched on to be connected with the earth network, and the intelligent distribution network single-phase earth comprehensive protection device is connected with a fault point in parallel.

Preferably, the intelligent power distribution network single-phase grounding comprehensive protection device is provided with an arc extinction device, the arc extinction device is used for eliminating arcs at fault points, and the arc extinction device transfers current passing through the fault points originally.

Preferably, the intelligent power distribution network single-phase grounding comprehensive protection device is connected with a low-impedance transformer, the low-impedance transformer is provided with a signal generator, the signal generator injects a special signal for fault location and fault automatic recovery, and an intermediate signal generated by locating a fault is uploaded to a cloud service platform through a wireless communication module.

Preferably, the cloud service platform adopts a Springboot + mybatisPlus technology to realize two unifications of http interface service and socket communication service, the http service and the socket communication service are arranged on an item frame and are started to operate simultaneously by one key, and the socket communication service is used for establishing the connection between the wireless communication module and the cloud service platform.

Preferably, the data stored in the cloud service platform is cleaned regularly, the time interval is three months, and the terminal app acquires the data from the current time to the previous day through the http interface.

Preferably, the terminal app is developed by adopting constant voltage loss android, is provided with a network setting function, a message information automatic adding function and the like, and can also view a signal standard list and a data statistical chart.

Preferably, the terminal app has a message pushing function and a reminding function, and the reminding function is provided with a warning tone and a vibration alarm.

Preferably, the terminal app writes a code layer by using an MVC technology, the terminal app can add a signal protocol, signals of the terminal app are automatically classified and counted, and signal data are displayed on the terminal app.

An operation mode of a preferable power distribution network single-phase grounding alarm system is characterized by comprising the following specific operation steps:

s1, the single-phase grounding alarm system injects a special frequency signal into the system through the signal generator, the low-impedance transformer is connected with the dual-frequency power supply, and the terminal app is provided with a heartbeat inquiry acquisition data, and the heartbeat frequency is once every 10 seconds;

s2, when the single-phase grounding fails, fault location is carried out on a special frequency signal sent by the signal generator, the wireless communication module collects an intermediate signal generated by locating the fault, fault point information is uploaded to the cloud service platform through socket communication service, and the cloud service platform analyzes and stores data;

s3, opening the terminal app, acquiring signal data by the terminal app through http polling and analyzing and processing the signal data, and if the signal data is an instantaneous fault, recording fault information and forming a log report by the terminal app; if the fault is permanent, the terminal app pushes a fault message and pops up an unread message mark at the upper right corner of the terminal app;

s4, when the terminal app pushes the fault information and is not read, the terminal app sends out a ring alarm or a vibration alarm until the fault information is read and the terminal app touches the alarm;

and S5, processing when the operator reaches a fault point according to the fault information, sending fault removing information after the single-phase grounding alarm system monitors and clears the fault in real time, or sending ring alarm or vibration alarm by the terminal app at regular time.

The invention has the beneficial effects that:

the intelligent distribution network single-phase grounding comprehensive protection device adopts a parallel shunt principle, has special signal frequency to a main body of a power grid system through a signal generator, controls corresponding phase switches to be switched on when a fault is detected and a fault point is positioned, enables an arc extinction device and the fault point to be connected into the power grid in parallel, and enables the arc extinction device to be used as a connecting point to form a grounding loop with the power grid, so that arc extinction and overvoltage protection effects are achieved;

the terminal app is connected with the cloud service platform, receives fault information uploaded by the intelligent power distribution network single-phase grounding comprehensive protection device through the wireless communication module, makes corresponding operation according to fault types, and gives out a ringtone and a vibration alarm when the fault is serious, and the alarm is not released until the fault is eliminated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a diagram of a single-phase earth protection system architecture of a power distribution network;

fig. 2 is a system work flow diagram.

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.

As shown in fig. 1, the power distribution network single-phase grounding alarm system comprises an intelligent power distribution network single-phase grounding comprehensive protection device, an http server, a wireless communication module, a terminal app and a cloud service platform, wherein the wireless communication module is used for data transmission between the intelligent power distribution network single-phase grounding comprehensive protection device and the cloud service platform, the http server is connected with the cloud service platform, and the terminal app is connected with the http server;

the intelligent power distribution network single-phase grounding comprehensive protection device is used for signal generation, collection and resetting and adopts a parallel shunt principle to protect; when the single-phase earth fault occurs, the intelligent distribution network single-phase earth comprehensive protection device controls the corresponding phase switch to be switched on to be connected with the earth network, and the intelligent distribution network single-phase earth comprehensive protection device is connected with the fault point in parallel. The intelligent power distribution network single-phase grounding comprehensive protection device is provided with an arc extinction device, the arc extinction device is used for eliminating arcs at fault points, and the arc extinction device transfers current passing through the fault points originally. The intelligent power distribution network single-phase grounding comprehensive protection device is connected with a low-impedance transformer, the low-impedance transformer is provided with a signal generator, the signal generator injects special signals for fault location and fault automatic reset, and intermediate signals generated by locating faults are uploaded to a cloud service platform through a wireless communication module.

The wireless communication module is used for collecting fault signals sent by the intelligent power distribution network single-phase grounding comprehensive protection device and uploading the fault signals to the cloud service platform;

the terminal app is used for receiving fault signals, alarming, storing and inquiring fault information, reporting operation logs, managing personnel and binding equipment; the terminal app is provided with a message pushing function and a reminding function, and the reminding function is provided with a warning tone and a vibration alarm.

The http server is used for providing an http interface for the terminal app to be connected with the cloud service platform;

and the cloud service platform is used for storing fault data, equipment management data, personnel information and logs. The cloud service platform adopts a Springboot + mybatisPlus technology to realize two-in-one of http interface service and socket communication service, the http service and the socket communication service are arranged in a project frame, and are started and operated simultaneously by one key, and the socket communication service is used for establishing connection between the wireless communication module and the cloud service platform.

As shown in fig. 2, the operation method of the power distribution network single-phase grounding alarm system specifically comprises the following steps:

s1, the single-phase grounding alarm system injects a special frequency signal into the system through the signal generator, the low-impedance transformer is connected with the dual-frequency power supply, and the terminal app is provided with a heartbeat inquiry acquisition data, and the heartbeat frequency is once every 10 seconds;

s2, when the single-phase grounding fails, fault location is carried out on a special frequency signal sent by the signal generator, the wireless communication module collects an intermediate signal generated by locating the fault, fault point information is uploaded to the cloud service platform through socket communication service, and the cloud service platform analyzes and stores data;

s3, opening the terminal app, acquiring signal data by the terminal app through http polling and analyzing and processing the signal data, and if the signal data is an instantaneous fault, recording fault information and forming a log report by the terminal app; if the fault is permanent, the terminal app pushes a fault message and pops up an unread message mark at the upper right corner of the terminal app;

s4, when the terminal app pushes the fault information and is not read, the terminal app sends out a ring alarm or a vibration alarm until the fault information is read and the terminal app touches the alarm;

and S5, processing when the operator reaches a fault point according to the fault information, sending fault removing information after the single-phase grounding alarm system monitors and clears the fault in real time, or sending ring alarm or vibration alarm by the terminal app at regular time.

When the intelligent distribution network single-phase grounding comprehensive protection device utilizes the low-impedance transformer to inject special frequency signals, and a fault is detected, the intelligent distribution network single-phase grounding comprehensive protection device uploads detected fault information data to the cloud service platform through the wireless communication module. And the cloud service platform analyzes and processes the received data, judges whether the fault exists all the time within the set time length and divides the fault according to the analysis result. If the fault is an instantaneous fault, the cloud service platform records and processes the fault information and does not send a control instruction to the intelligent power distribution network single-phase grounding comprehensive protection device; if the fault is a permanent fault, the cloud service platform stores fault information data, and meanwhile the cloud service platform sends an operation instruction to the intelligent distribution network single-phase grounding comprehensive protection device through the wireless communication module, so that the intelligent distribution network single-phase grounding comprehensive protection device controls corresponding phase switches to be switched on and is connected with a fault point in parallel, the arc extinction device is connected with the fault point in parallel, current of the fault point is transferred, and arc elimination and voltage protection are achieved.

In addition, the terminal app acquires signal data by using http polling, pushes fault information, and sends out ring alarm or vibration alarm according to set timing. And until the fault is eliminated, the intelligent power distribution network single-phase grounding comprehensive protection device uploads the information data monitored in real time, the fault is analyzed, processed and verified through the cloud service platform, fault contact information is sent, and the terminal app relieves the alarm.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.