CN206400006U

CN206400006U - A kind of online mains by harmonics monitoring device

Info

Publication number: CN206400006U
Application number: CN201621474386.0U
Authority: CN
Inventors: 张锐; 张恒煜
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2017-06-21
Filing date: 2017-06-21
Publication date: 2017-08-11
Anticipated expiration: 2027-06-21

Abstract

The utility model is related to a kind of online mains by harmonics monitoring device, by waveform acquisition module, analysis and processing module and the part of power module three composition.Waveform acquisition module and analysis and processing module parallel connection, power module is the two module for power supply.Surfed the Net using the Ethernet interfaces of RJ 45 or GPRS connections, harmonic data can be sent in remote data base by network, and can in current device in reading database other nodes harmonic data, the work of engineer can be enormously simplify with the data analysis harmonic problem of the other nodes of use so at a certain node.

Description

A kind of online mains by harmonics monitoring device

Technical field

The utility model is specifically related to a kind of online mains by harmonics monitoring device, belongs to energy monitor field.

Background technology

As China's industrialized level constantly improves, increasing nonlinear-load is linked into power network, especially all Such as IGCT, the use of rectification converter plant makes the current waveform of power network occur Severe distortion, to other electrical equipment of same node Impact.Using Harmonic Detecting Device, harmonic wave can be monitored, protection power network is normally run.

At present, the Harmonic Detecting Device that in the market occurs, disclosure satisfy that certain requirement, but still have the following disadvantages：

Worked independently under every monitoring device line, the data monitored are simply stored in its memory, it is impossible to passed through Network Real-Time Sharing.When analyzing some electric energy problems, we are generally required at the monitoring point for occurring problem with regard to energy The harmonic information of other monitoring points is consulted, Real-Time Sharing of all node datas in arbitrary node is realized.

Although some large-scale monitoring systems have central control board to integrate all nodal informations, but all analyzing and processing all exist Central control board is carried out, it is impossible to pass through the other nodal informations of node visit, it has not been convenient to in-situ processing problem, and system complex, It is with high costs.

The content of the invention

The purpose of this utility model is to provide a kind of online mains by harmonics monitoring device simple in construction, easy to use, both Mains by harmonics can be monitored in real time on device, the harmonic data of other monitoring points on network can be checked on device again, at certain With regard to case study can be carried out using the data of all monitoring points at individual monitoring point, the work of engineer is facilitated.Each monitoring point The time synchronized being all used as by the GPS information of oneself between differentiation, monitoring point is synchronous also by GPS time services.

In order to realize function above, the utility model proposes technical scheme be：

A kind of online mains by harmonics monitoring device, is made up of three modules：Waveform acquisition module, analysis and processing module and electricity Source module.Waveform acquisition module and analysis and processing module parallel connection, power module is the two module for power supply.

The analysis and processing module, in core status, including consisting of part：S5PV210 main control modules, SD card Module, GPS module, RJ-45 Ethernet interfaces, GPRS module, touch screen.

Waveform acquisition module can monitor the shape information of four road voltage and currents simultaneously, and its part includes：CT electricity Stream isolation, PT voltages Isolation and amplifying circuit and A/D7606.

Four road current and voltage signals pass through current transformer respectively（CT is galvanically isolated）And voltage transformer（PT voltages every From）, filtering enter with amplifying circuit, A/D7606 in S5PV210, harmonic information is obtained after treatment, by GPRS module or RJ-45 Ethernet interfaces are stored in network data base, and are backuped in local SD card.Harmonic wave is also included in harmonic information Temporal information and geographical location information during generation.The geographical position of device is provided by GPS module, and the time of device opens in device It is synchronous by GPS time signals when dynamic.The current harmonic information or network data of display can be operated according to user by touching screen The harmonic information of other nodes in storehouse.

Beneficial effect：

Without CSRC platform, the data of all monitoring points can be just consulted at some monitoring point so as to problem analysis, Facilitate scene investigation during mains by harmonics generation problem, device is simple, and reliability and cost performance are high.

The time unification of all monitoring points makes all harmonic datas stored in network data base have system by GPS time services One time reference, problem will not be produced in process problem because of time error.

Mark of the every equipment in database is uniquely determined by the equipment GPS position information, other easy-to-look-up nodes Data.

Local data is backed up using SD card, and data can be taken by SD card and are used in other platforms.

Two kinds of networking modes of GPRS and common RJ-45 are provided, user can voluntarily select according to network condition.

Brief description of the drawings：

A kind of overall block diagram for online mains by harmonics monitoring device that Fig. 1 provides for the utility model；

Fig. 2 is filtering and amplifying circuit；

Fig. 3 is the electrical block diagram of SD card module；

Fig. 4 is the electrical block diagram of GPS module；

Fig. 5 is GPRS module electrical block diagram；

Fig. 6 is RJ-45 ethernet interface circuit structural representations.

Embodiment

With reference to Figure of description, the utility model is described in further detail.

As shown in figure 1, online mains by harmonics monitoring device, is made up of three modules：Waveform acquisition module, analyzes and processes mould Block and power module.Waveform acquisition module and analysis and processing module parallel connection, power module is the two module for power supply.Analysis Processing module, in core status, including consisting of part：S5PV210 main control modules, SD card module, GPS module, RJ- 45 Ethernet interfaces, GPRS module, touch screen.Waveform acquisition module can monitor the waveform letter of four road voltage and currents simultaneously Breath, its part includes：CT is galvanically isolated, PT voltages Isolation and amplifying circuit and A/D7606.

Fig. 2 is filtering and amplifying circuit.For handling the signal that voltage current transformer is obtained, higher hamonic wave is filtered.

Fig. 3 is the electrical block diagram of SD card module, for harmonic information to be locally stored.

Fig. 4 is the electrical block diagram of GPS module, for obtaining temporal information and positional information.

Fig. 5 is GPRS module electrical block diagram, and Fig. 6 is RJ-45 ethernet interface module electrical block diagrams, is led to Cross them and connect network data base, by harmonic information storage into database.And can be by Ethernet interface from database The middle harmonic information for reading other nodes.

Claims

1. a kind of online mains by harmonics monitoring device, described device mainly includes three modules, waveform acquisition module, analyzing and processing Module and power module；Waveform acquisition module and analysis and processing module parallel connection, power module is the two module for power supply；Ripple The shape information of shape acquisition module collection voltages and electric current；Its composition includes：CT is galvanically isolated, PT voltage Isolations are with putting Big circuit and A/D7606；Analysis and processing module, the shape information that main responsible processing waveform acquisition module is collected, including with Lower part：S5PV210 main control modules, SD card module, GPS module, RJ-45 Ethernet interfaces, GPRS module, touch-screen Curtain.

2. online mains by harmonics monitoring device as claimed in claim 1, it is characterised in that offer RJ-45 Ethernet interfaces, Two kinds of network accesses of GPRS module, user can select different networking modes according to the actual requirements.