CN106570948A - Transformer substation intelligent meter reading system provided with portable device - Google Patents

Abstract

The invention discloses a transformer substation intelligent meter reading system provided with a portable device. The meter reading system includes a portable client and a remote terminal. The remote terminal includes a camera module, a storage module, a computing and processing module and a wireless communication module. The camera module is used for photographing meters in a transformer substation and storing the photograph of the meters into the storage module; the storage module is used for storing data sent by the camera module; the computing and processing module is used for reading the data in the storage module, processing the photograph of the meters, calculating the read numbers, and carrying out communication with the portable client by means of the wireless communication module; the wireless communication module is used for communication between the computing processing module and the portable client. The meter reading system is high in inspection efficiency and is low in manpower cost.

Description

A kind of intelligent substation kilowatt meter reading-out system for being equipped with portable equipment

Technical field

The present invention relates to intelligent substation patrol field, more particularly to a kind of intelligent substation for being equipped with portable equipment Kilowatt meter reading-out system.

Background technology

Transformer station is the core hinge of electrical networks at different levels, is played an important role in electric energy transmission and voltage stabilization, right It is the key technology means for ensureing electric power netting safe running that station equipment routine is patrolled and examined.With rapid development of economy, power system Scale constantly expands, and the requirement of system stability is improved constantly.Existing manual inspection pattern high labor intensive, detection quality point Dissipate, it is big by vile weather interference, it is more difficult to meet above-mentioned needs.As machine intelligence patrols and examines the appearance of technology, it can replace manually Undertake that operation difficulty is big, the work that required precision is high, it is more and more of interest for industrial circle.In order to complete in transformer station The monitoring of primary equipment running status, needs to carry out regularly examination and maintenance to transformer station.At present, make an inspection tour main by artificial Mode carries out the qualitative judgement of sense organ to equipment or librarian use instrument is measured.At the scene the equipment of carrying out is patrolled operations staff Depending on, it is main by seeing, touching, listening, smelling etc. that sense organ or instrument go to realize, and compare with accumulating experience, so as to judge that its runs shape Condition.Can the defect or hidden danger of equipment be found in time, except the professional qualities personal with tour personnel, working attitude and work Lack failure modes, system after state is relevant, and the equipment and method of work for also using with tour personnel is relevant, and accident occurs Analysis, responsibility are unclear, are so difficult the requirement that increasingly improves to power supply quality of satisfaction, at the same high pressure, terrible weather environment and Under the conditions of equipment irregular operation, not only personal safety is threatened, and the safe and stable operation to electrical network is buried necessarily Hidden danger.Simultaneously the most still mechanical indicating pointer instrument of the instrument of Generic Substation, is shown by hand of dial, the artificial precision for reading Low, poor reliability is stronger to the subjective judgment dependency of people.And under transformer station's current device, numeral is carried out to instrumentation Auto upgrading is huge due to cost, and technical requirements are higher, there is certain difficulty.

The content of the invention

Goal of the invention：In order to overcome the high problem of inefficiency, human cost present in existing substation inspection, this It is bright to propose a kind of intelligent substation kilowatt meter reading-out system for being equipped with portable equipment.

Technical scheme：To reach this purpose, the present invention is employed the following technical solutions：

The intelligent substation kilowatt meter reading-out system for being equipped with portable equipment of the present invention, including athe portable client and long-range Terminal, remote terminal includes photographing module, memory module, calculates processing module and wireless communication module, wherein：

Photographing module：For shooting converting station instrument photo, and instrument photo is stored into memory module；

Memory module：For storing the data of photographing module transmission；

Calculate processing module：Data in for reading memory module, are processed instrument picture, calculate reading, with And communicated with athe portable client by wireless communication module；

Wireless communication module：For realizing calculating the communication between processing module and athe portable client.

Further, the calculating processing module is processed instrument picture by the following method, calculates reading：

S1：The position of fixation and recognition dial plate in instrument picture；

S2：Cutting correction is carried out to dial plate image；

S3：Gray proces, gaussian filtering, binaryzation and edge detection process are carried out to dial plate image, to project pointer position Put；

S4：In the image that edge detection process is obtained, using Hough transformation detection of straight lines algorithm, positioning pointer position with Angle, calculates total indicator reading.

Further, in step S4, total indicator reading r is calculated according to formula (1)：

In formula (1), θ_pointerFor angle value of the pointer in Hough transformation coordinate system, θ₀It is zero graduation line in Hough transformation Angle value in coordinate system, θ_fullFor angle value of the full scale line in Hough transformation coordinate system, R is instrument range value.

Beneficial effect：Compared with prior art, the present invention has following beneficial effect：

1) convenience degree of regional substation inspection work of having inconvenient traffic is improve, patrol officer only need to sit in the controlling The heart, you can patrol and examine work by what the system completed instrument；

2) human cost patrolled and examined is reduced, one patrol officer can be responsible for one or even multiple transformer stations by the system Interior instrument patrols and examines work, reduces the manpower burden patrolled and examined in work；

3) speed for patrolling and examining work is improve, the condition adjudgement of equipment instrument can be completed by software, suspicious feelings is occurring Again by patrol officer's actual inspection during condition, original patrol mode work efficiency is compared higher；

4) other information reforming mode is compared, it is simple to operate with being more easy to the characteristics of the system has miniaturization low cost The characteristics of popularization.

Description of the drawings

Fig. 1 is the system schematic of the specific embodiment of the invention；

Fig. 2 is the system architecture diagram of the specific embodiment of the invention；

Fig. 3 is the algorithm flow chart of the calculating meter reading of the specific embodiment of the invention.

Specific embodiment

Technical scheme is further introduced with reference to specific embodiment.

This specific embodiment discloses a kind of intelligent substation kilowatt meter reading-out system for being equipped with portable equipment, such as Fig. 1 and Fig. 2 It is shown, including athe portable client and remote terminal.Remote terminal is erected at meter location to be inspected, is selected by athe portable client Selecting property logs in respective handling module, issues control instruction and obtains instrumented data.Remote terminal include photographing module, memory module, Processing module and wireless communication module are calculated, wherein：

Athe portable client：Optional cell phone platform, builds SSH services, using SSH simultaneously in mobile phone terminal and remote terminal Service can patrol and examine operation with Telnet remote terminal, concurrent cloth instruction control.

Photographing module：For shooting converting station instrument photo, and instrument photo is stored into memory module.It is main to select The CSI interface photographing module that american semiconductor company (Omnivision) provides.Photographing module selects OV5647 sensitive chips.

Memory module：For storing the data of photographing module transmission.The storage medium of optional TF cards form, TF cards have Small volume, widely used advantage.

Calculate processing module：Data in for reading memory module, are processed instrument picture, calculate reading, with And communicated with athe portable client by wireless communication module.Calculating processing module can mainly select Botong BCM2837 tetra- Core processor, and it is equipped with 1G internal memories, wireless blue tooth and WIFI module.BCM2837 chips are a based on ARM Cortex-A53 The product of the core processors of 1.2Ghz tetra-, the calculating for being responsible for Hough transformation is processed, and processor host frequency is up to 1.2GHz and ensure that calculation The real-time of method and the stability of system.

Wireless communication module：For realizing calculating the communication between processing module and athe portable client.

As shown in figure 3, calculate processing module processing instrument picture by the following method, reading is calculated：

S1：The position of fixation and recognition dial plate in instrument picture.

S2：Cutting correction is carried out to dial plate image.

S3：Gray proces, gaussian filtering, binaryzation and edge detection process are carried out to dial plate image, to project pointer position Put.Wherein, gray proces and filtering are for the coloured image that details is enriched is converted to into single gray level image, gray level image It is the image of each pixel only one of which sample color, this kind of image is typically shown as from most furvous to most bright white ash Degree, reduces redundant details in picture, retains crucial information to be identified.Binary conversion treatment is then further by greyscale image transitions For black and white image, other redundant image informations are left out, so as to farthest ensure algorithm process it is efficient with it is real-time Property.Conventional Binarization methods have Two-peak method, P parametric methods, iterative method and maximum variance between clusters etc..The purpose of rim detection is The obvious point of brightness flop in reference numbers image.Significant changes in image attributes generally reflect attribute critical event and Change.Rim detection can significantly reduce data volume, and eliminate it is considered that incoherent information, remains figure As important structure attribute.Conventional edge detection algorithm have Roberts operator detection methods, Prewitt operator detection methods, Sobel operators detection method and Canny detection methods.

S4：In the image that edge detection process is obtained, using Hough transformation detection of straight lines algorithm, positioning pointer position with Angle, calculates total indicator reading.Hough transformation can preferably reduce noise jamming.

In step S4, total indicator reading r is calculated according to formula (1)：

In formula (1), θ_pointerFor angle value of the pointer in Hough transformation coordinate system, θ₀It is zero graduation line in Hough transformation Angle value in coordinate system, θ_fullFor angle value of the full scale line in Hough transformation coordinate system, R is instrument range value.

Claims (3)

1. a kind of intelligent substation kilowatt meter reading-out system for being equipped with portable equipment, it is characterised in that：Including athe portable client and far Journey terminal, remote terminal includes photographing module, memory module, calculates processing module and wireless communication module, wherein：

Photographing module：For shooting converting station instrument photo, and instrument photo is stored into memory module；

Memory module：For storing the data of photographing module transmission；

Calculate processing module：Data in for reading memory module, are processed instrument picture, calculate reading, Yi Jitong Cross wireless communication module to be communicated with athe portable client；

Wireless communication module：For realizing calculating the communication between processing module and athe portable client.

2. the intelligent substation kilowatt meter reading-out system for being equipped with portable equipment according to claim 1, it is characterised in that：The meter Calculate processing module by the following method to process instrument picture, calculate reading：

S1：The position of fixation and recognition dial plate in instrument picture；

S2：Cutting correction is carried out to dial plate image；

S3：Gray proces, gaussian filtering, binaryzation and edge detection process are carried out to dial plate image, to project pointer position；

S4：In the image that edge detection process is obtained, using Hough transformation detection of straight lines algorithm, positioning pointer position and angle Degree, calculates total indicator reading.

3. the intelligent substation kilowatt meter reading-out system for being equipped with portable equipment according to claim 2, it is characterised in that：The step In rapid S4, total indicator reading r is calculated according to formula (1)：

$r=\frac{{\mathrm{\θ}}_{\mathrm{pointer}}-{\mathrm{\θ}}_0}{{\mathrm{\θ}}_{\mathrm{full}}-{\mathrm{\θ}}_0}\×R---\left(1\right)$

In formula (1), θ_pointerFor angle value of the pointer in Hough transformation coordinate system, θ₀It is zero graduation line in Hough transformation coordinate Angle value in system, θ_fullFor angle value of the full scale line in Hough transformation coordinate system, R is instrument range value.