ES2255415B1 - SOLAR AND WIND FACILITIES TELEGESTION SYSTEM. - Google Patents

Abstract

Remote management system for solar and wind installations. It is a low-cost system comprising several sensors (1), which measure physical variables of the installation (20), an electronic control module (2) connected to all sensors (1) with the capacity to store the values that they arrive from them and generate SMS alarm messages, which acts on different elements of the facilities (20), through several actuators (13) and communicates through a modem (3) via GSM network with a data center. control (30) in which there is a computer (5) with a modem (4) and with Internet connection, which also connects with remote management centers (40) that have a personal computer (8), with connection to Internet, for remote management of facilities (20). Optionally it has a personal computer of a portable nature (10) that connects to the installation (20) for initialization or maintenance of the system.

Description

Remote management system for solar installations and wind.

Object of the invention

The present invention comprises a set of devices used to monitor and control facilities of solar and wind energy remotely.

The object of the invention is a cheap system that allows, through the use of the Internet and the GSM network, to access the user from anywhere to control and manage the installation.

Background of the invention

So far the control or management systems remote (also called telecontrol or telemanagement) to solar and wind installations are not widespread due to increase of the cost that they suppose on the installations. Can be distinguish two types of solar or wind power installations: those of small power and those of great power. In the first the Low cost of installation does not justify the addition of systems remote control. In the latter, very complex systems are used,  formed by very expensive various teams of different Manufacturers

The cost problem is largely solved measure using electronic technology and telecommunications currently available, getting costs much lower that allow to install this type of systems in facilities of almost any size.

As for the installers of the solar and wind installations, some regulations establish the Mandatory compliance of a maintenance plan of the facilities they perform. The need arises, for these companies, to offer a new service to the end user of the installations. The dispersed character of the solar and wind installations, so the costs associated with performing these maintenance and assistance tasks technique now become too high for companies.

As regards the users of the facilities, increasingly demand more information (data from operation) and management capacity (remote management) on their installations. However the cost problem mentioned previously it is a great obstacle to buy these equipment.

There are patents related to the invention which is presented: WO 95/24791, WO 94/29998 or WO 95/14976.

Description of the invention

The facilities remote management system solar and wind proposed by this invention, through the Internet use, that the user can access your installation remotely cheaply and without the need to acquire any special software An added advantage of using the Internet is its Availability almost anywhere and at any time.

The present invention, by its generic design, allows to be applied in any type of these facilities, regardless of its nature (grid connected photovoltaic, photovoltaic isolated, solar thermal, wind, wind-photovoltaic), size and design.

The system consists of a series of components located at the site of the solar or wind installation at telemanage It should be noted that the system allows telemanage many facilities, for which the aforementioned components will have to be mounted on each and every one of those installations.

Other components are located in place from where you want to centralize the remote management of all facilities, called a control center, and which you will usually use the company that performs the maintenance of the facilities.

Other elements are found from where you want to perform telemanagement in a decentralized way and that they will have to communicate with the checkpoint through Internet. In these places the users will usually be the owners of the facilities, which may be, for example, at home

Finally a control module is planned portable, optional use that works alongside the control module and It is expressly defined for installation work and maintenance. This module is used by the installer to initialize the control system during installation and to facilitate the tasks of revision or modification of the maintainer.

The components that are placed in the place of the Installation are as follows: a series of sensors that measure physical variables of the solar or wind installation desired telemanage, for example thermocouples or Pt100 probes for measurement temperature, pressure meters, electric current, of electrical voltage, electrical power, water flow, and convert into electrical values; or digital signals, such as PV inverter status, alarm signals, probes presence, gas, or water detectors, etc.

Associated with these sensors has a module electronic control, connected to all sensors, with ability to store the values that come from them, such as It is described below, and with the capacity to act on different elements of the facilities through actuators. This module is also connected to a modem through a serial port. RS232 and is able to handle it, using standard AT commands, to communicate with other devices. It also has a second serial port, through which it is able to implement a serial communication through the RS232 standard with a computer personnel, and a power supply or other supply system electric capable of supplying all the mentioned components.

On the other hand the control center incorporates the following components: a personal computer, with at least one CPU, a keyboard, a mouse, a display screen and a Internet connection, a second modem, connected to the computer personnel through the RS232 serial port and a power supply or another power supply system capable of powering the Personal computer and the second modem.

In the places from where you want to do the telemanagement only has to be a personal computer like the Previous, connected to the Internet and with any browser program installed, as well as another power supply or other system Power supply capable of powering the personal computer.

The portable control post, optional and whose use is justified in circumstances of commissioning or on-site maintenance of the installation, consists of a personal computer, which may or may not require a power supply and a cable to communicate said Computer with the control module. Said cable must be a standard cable for RS232 serial port.

The installation control module consists of a series of electrical and electronic circuits, including a microcontroller and memories, both permanent and volatile, which store the operating program and the data that arrives from the sensors placed in the installation, for example, 128K of SRAM memory and 256K of flash memory-EPROM, in addition to an analog-digital converter that convert the 0-10 Vdc analog inputs into digital, understandable by the microcontroller. The entrances and digital outputs (for example, CMOS technology) are optoisolated It also has a frequency input capable of Measure signals in frequency up to 4 MHz. Analog outputs 0-10 Vdc and digital and relay outputs provide the ability to act on the different elements of the control module installation. Complete your functionality through two standard serial communication ports RS232

The installation control module can perform at least the following functions:

one.

Read the signals sent by the sensors with a frequency determined, both analog and digital.

2.

Store them in your memories.

3.

Store operating parameters, such as the sampling frequency of the sensors and the numbers of Telephone recipients of alarm messages.

Four.

Send alarm messages, of the type SMS, through the modem connected to it to phone numbers Have it stored.

5.

Receive phone calls from the center control and, through a command language, send the data stored or the data that you read at that time from the sensors as well how to send and receive its internal configuration parameters and limit values from which the alarms

6.

Communicate with the checkpoint portable and, through a command language, send the data stored or the data that you read at that time from the sensors as well how to send and receive its internal configuration parameters and limit values from which the alarms

7.

Act on elements of the installation well through actions from algorithms own or through control slogans managed from the control center

On the other hand the personal computer of the center Control can perform at least the following functions:

one.

Call through the modem connected to he to the facility and ask for and receive the data stored in the control module, as well as send and receive the parameters of internal configuration of the control module and the values of alarm, through a command language.

2.

Call through the modem connected to him to the installation and send to the control module, well the control instructions, either directly the status of the performances.

3.

Store the data you receive from control module, for example, in a database or in files.

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Four.

Receive and store alarm messages from the installation, of the SMS type, through the modem connected to him.

5.

Serve web pages through your Internet connection with the data stored in the facilities, to a large number of computers simultaneously, located in telemanagement centers. To access from these computers to each facility you have stored will be necessary Enter a password

The personal computer of the control center has a computer program with an interface that allows the user of the control center to indicate when he wants to call the installation, to perform the functions already mentioned and visualize the data. Likewise, it will carry another program that allows it to serve web pages through its Internet connection and an application that manages the information requests of the users of the tele- centers.
management.

This personal computer can be connected to through different phone numbers, to each of the facilities every time. You can also receive alarm messages of all facilities.

On the other hand the personal computer of the post portable control can perform at least the following functions:

one.

Communicate through the RS232 standard With the installation control module, order and receive data stored in their memories, as well as send and receive internal configuration parameters of the control module and alarm values, through a command language.

2.

TO through the RS232 standard, send to the control module, either control instructions, either directly the status of the performances.

3.

Store the data you receive from control module, for example, in a database or in files.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to an example preferred practical implementation of it, is accompanied as integral part of that description, a set of drawings where with an illustrative and non-limiting nature, what has been represented next:

Figure 1.- Shows a schematic view of the remote management system for solar and wind installations.

Preferred Embodiment of the Invention

The facilities remote management system solar and wind power that constitutes the object of this invention is of application for at least one solar or wind installation (20) that It has sensors (1) that measure physical variables of the installation and an electronic control module (2) that receives the signals from the sensors (1) and acts on actuators (13) of the installation (20).

From this basic constitution the system remote management proposes the incorporation of a modem (3) connected to the control module (2) that communicates with the GSM network with a control center (30) that has management means centralized facilities (20), which will usually use the company that performs the maintenance of the facilities, to which sends and receives internal configuration data and parameters and limit values from which alarms are generated, sends alarm signals, and from which you receive control instructions that they can affect the activation of the actuators (13).

The control center (30) is located at Internet communication with telemanagement centers (40) decentralized control users who will usually be the owners of the facilities and may be, for example, at home

Optionally incorporates a checkpoint portable (50) that connects to the module (2) of the installation (20) for using the installer to initialize the system during its installation and facilitate the revision or modification tasks of the maintainer.

The control center (30) comprises:

-

a modem (4),

-

the centralized management means consisting of a computer staff (5) connected to the internet that is equipped with a serial port  RS232 for the modem (4) that receives the data stored in the control module (2), sends and receives the parameters of internal configuration of the control module (2) and the values of alarm, through a command language, sends the instructions of control or directly the status of the actions, stores the data received from the control module (2), received and stored dinner SMS type alarm messages, serves web pages through your Internet connection with the data stored in the facilities (20), and has an application that manages the requests for information from users of the centers of remote management (40),

-

a power supply (7) that feeds the computer staff (5) and modem (4).

The remote management centers (40) have a personal computer (8) connected to the Internet with access to data stored from each installation (20) by means of a password, and a power supply (9) capable of feeding the personal computer (8).

On the other hand the control module (2) located in one of the facilities (20) it comprises:

-

a analog-digital converter that converts analog inputs captured by the sensors (1) in the installation (20) in digital signals,

-

memories that store the program and operating parameters, the data that arrives from the sensors as well as phone numbers receiving messages alarm

-

a microcontroller that reads digital signals, sends outputs analog to actuators (13) acting on the different elements of the installation through actions from own algorithms, communicates with the control center (30) and with the portable checkpoint (50), through a language of commands, send the stored data or the data you read in that moment of the sensors (1), as well as sends and receives its parameters of internal configuration and limit values from which alarms are generated, and sends alarm messages, of the type SMS, via modem (3) to phone numbers stored,

-

a digital-analog converter that converts signals digital microcontroller analog, to send to the actuators (13),

-

to the minus two RS232 standard serial communication ports, one port communication to connect with a modem (3) and another to possible connections to the portable checkpoint (10).

It is contemplated that the control module (2) and the modem (3) are powered by a supply source electric (6).

The portable checkpoint (50) understands:

-

a personal computer (10) equipped with an RS232 serial port from which part a cable (12) to communicate with the control module (2) of the installation (20) to request and receive the data stored in their memories, as well as send and receive the parameters of internal configuration of the control module (2) and the values of alarm, through a command language, sends to the module control (2) the control instructions or the status of the proceedings and stores the data it receives from the control module (2).

-

a power supply (11) that feeds the computer (10)

Below is a possible protocol of communication between the control module (2) and the center of control (5) or the portable control post (10).

All commands are sent in the direction of control center (5) or portable control post (10) at control module (2). The expression "<CR>" means "car return".

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Commands

read

Syntax: read (name) <CR> or good

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leer(AlarmLimitAna,canal) < CR >

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read (AlarmLimitAna, channel) <CR>

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nombre: el nombre de la variable que se desea leerArguments:

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name: the name of the variable you want to read

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canal: número del canal analógico que se quiere configurar

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channel: analogue channel number to be configured

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AIcanalMin=valor 1

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AIcanalMax=valor2, separados por tabuladorReply:

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AIchannelMin = value 1

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AIchannelMax = value2, separated by tab

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Example:

Sent:

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leer(AI2) < CR >

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read (AI2) <CR>

Reply:

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AI2=3.45 <CR>

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AI2 = 3.45 <CR>

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to write

Syntax: write (name, value) <CR> or good

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escribir(AlarmLimitAna,canal,min,max) < CR > o bien

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write (AlarmLimitAna, channel, min, max) <CR> or

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escribir(PrioridadAlarm,canal,prioridad) < CR > o bien

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write (Priority Alarm, channel, priority) <CR> or

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escribir(fecha,año,mes,día,hora,minuto,segundo) < CR>

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write (date, year, month, day, hour, minute, second) <CR>

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nombre: el nombre de la variable que se desea escribirArguments:

 \ hskip0,2cm 

name: the name of the variable you want to write

\hskip1,2cm

valor: valor de la variable que se desea escribir

 \ hskip1,2cm 

value: value of the variable that you want to write

\hskip1,2cm

canal: número del canal analógico que se quiere configurar

 \ hskip1,2cm 

channel: analogue channel number to be configured

\hskip1,2cm

min: límite inferior de alarma

 \ hskip1,2cm 

min: lower alarm limit

\hskip1,2cm

max: límite superior de alarma

 \ hskip1,2cm 

max: upper alarm limit

\hskip1,2cm

año,mes,día,hora,minuto,segundo : valores deseados

 \ hskip1,2cm 

year, month, day, hour, minute, second: desired values

Explanation: to write several variables you need to use this command repeatedly.

Example:

write (AlarmLimitAna, 1,1.33,5.00);

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moniton

Syntax: moniton <CR >

Explanation: when installation Receive this command, send all installation values with the sampling period prefixed.

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monitoff

Syntax: monitoff < CR>

Explanation: when installation receive this command, stop sending monitoring data from the installation.

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histor

Syntax: histor <CR >

Explanation: when installation Receive this command, send a file with the following Format:

Nnnn stored data file

Number of samples: mmm

Period: pp s

Date: dd-mm-yyyy

Time: hh: mm: ss

M: 0

var1 (t = 0)

varn (t = 0)

M: 1

var1 (t = 0 + pp)

End of data

As the information about the sampling period it is sent at the beginning of the file, it is not necessary to put in each data set the time at which they were collected. If it does not have Stored historical data responds nothing.

RESET

Syntax: RESET < CR>

Explanation: delete all stored data in the module and returns all its configuration variables factory settings

Variables

The variables that are read and written with the Read and write commands are as follows:

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Name of the variable Meaning Observations periodomonit  \ begin {minipage} [t] {60mm} Monitoring period \ end {minipage}  \ begin {minipage} [t] {60mm} [0.655535] seconds. Saturates to the minimum value when it is exceeded. Satura to the maximum value when exceeded. \ end {minipage} period  \ begin {minipage} [t] {60mm} Period of sampling. \ end {minipage}  \ begin {minipage} [t] {60mm} [0.655535] seconds. Saturates the maximum value when exceeded. When you write the variable does not delete the history. \ end {minipage} canalsana  \ begin {minipage} [t] {60mm} Number of channels analog. \ end {minipage}  \ begin {minipage} [t] {60mm} [1,11] for the entrances and [12,20] for the exits. Ignore any other value. When this variable is changed, all values are deleted stored and begin to store of new. \ end {minipage} canalsdigi  \ begin {minipage} [t] {60mm} Number of channels digital. \ end {minipage}  \ begin {minipage} [t] {60mm} [0.10] for the entrances and [11,20] for the exits. Ignore any other value. When this variable is changed, all values are deleted stored and begin to store of new. \ end {minipage} Info  \ begin {minipage} [t] {60mm} Information general about the installation. \ end {minipage}  \ begin {minipage} [t] {60mm} 150 characters maximum If more than 260 characters are written it is can automatically reset the control module (2). \ End {minipage} Telalarma1  \ begin {minipage} [t] {60mm} Number of phone to which the installation sends the alarm messages. \ end {minipage}  \ begin {minipage} [t] {60mm} Just read the first 9 characters that are send. \ end {minipage} telalarma2 Idem. Idem. Telalarma3 Idem. Idem.

(Continuation)

Name of the variable Meaning Observations Date  \ begin {minipage} [t] {60mm} Date and current time of the control module (2). \ End {minipage}  \ begin {minipage} [t] {60mm} write (date, year, month, day, hours, minutes, seconds). when reading returns "date: year / month / day hour: hours: minutes: seconds". date maximum: 2048/1/15 \ end {minipage} AlarmLimitAna  \ begin {minipage} [t] {60mm} Values of triggering the alarms corresponding to the variables analog. \ end {minipage} Channel [0.11], value [± 2 ^ 31]. Alarm priority  \ begin {minipage} [t] {60mm} Priorities of the alarms corresponding to the signals analog. \ end {minipage} LimitDig  \ begin {minipage} [t] {60mm} Values of trigger of alarms corresponding to the variables analog. \ end {minipage}  \ begin {minipage} [t] {60mm} Take only the first 4 characters. Four ascii characters, whose decimal value passed to binary represents the alarm values: e.g. 23 (ascii) -> 3233 (decimal) -> 0000001100000010000000110000001 1 (binary) \ end {minipage}

Short messages

They are sent from the control modules (2) to control center (5) or mobile phones that have stored.

The content of the message must be as follows (a single line with the fields separated by tabs):

one.

For the case of alarm over analog signals in which exceeded its lower limit:

Alarm: dd / mm / yyyy hh: mm: ss Priority: dpi variable name = value 1

Lower than limit = value 2.

2.

For the case of alarm over analog signals in which exceeded its upper limit:

Alarm: dd / mmlaaaa hh: mm: ss Priority: ppp variable name = value 1

Exceeding limit = value 2.

3.

For The case of alarm over digital signals:

Alarm: dd / mm / yyyy hh: mm: ss Priority: dpi variable name = value 1

Different from limit = value 2.

Claims (6)

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1. Remote management system for solar and wind installations for at least one solar or wind installation (20) that has sensors (1) that measure physical variables of the installation, an electronic control module (2) that receives the signals of the sensors (1) and acts on the actuators (13) of the installation (20) by means of actions from own algorithms or from the control center (30) characterized in that it has a modem (3) connected to the control module (2) ) that through the GSM network it communicates with a control center (30), which has means of centralized management of the facilities (20), to which it sends and from which it receives data and internal configuration parameters and limit values to from which alarms are generated, it sends alarm signals, and from which it receives control instructions that can affect the activation of the actuators (13), and because the control center (30) is also in communication via internet with decentralized telemanagement centers (40). 2. Remote management system of solar and wind installations according to claim 1 characterized in that additionally the control module (2) of the installation (20) is connected to a portable control post (50) by means of a cable (12) for use by the installer that initializes the system during its installation and facilitates the tasks of revision or modification of the maintainer. 3. Remote management system for solar and wind installations according to claim 1, characterized in that the control center (30) comprises:

-

a modem (4),

-

the centralized management means consisting of a computer staff (5) connected to the internet, equipped with an RS232 serial port for connection with the modem (4) that receives the data stored in the control module (2) sends and receives the parameters of internal configuration of the control module (2) and the values of alarm, through a command language, sends the instructions of control or directly the status of the actions, stores the data received from the control module (2), received and stored SMS type alarm messages, serves web pages through your Internet connection with the data stored in the facilities (20), and has an application that manages the requests for information from users of the centers of remote management (40),

-

a power supply (7) that feeds the computer staff (5) and the second modem (4).

4. Remote management system of solar and wind installations according to claim 1 characterized in that the remote management centers (40) have a personal computer (8) connected to the Internet, with access to the stored data of each installation (20) by means of a password, and a power supply (9) capable of feeding the personal computer (8). 5. Remote management system for solar and wind installations according to claim 1, characterized in that the control module (2) comprises:

-

a analog-digital converter that converts analog inputs captured by the sensors (1) in the installation (20) in digital signals,

-

memories that store the program and operating parameters, the data that arrives from the sensors as well as phone numbers receiving messages alarm

-

a microcontroller that reads digital signals, sends outputs digital to some actuators (13), communicates with the center of control (30) and with the portable control post (50), through a command language, send stored data or data which reads at that time the sensors (1), as well as sends and receives its internal configuration parameters and limit values to from which alarms are generated, and sends messages from alarm, SMS type, through modem (3) to the numbers of stored phone,

-

a digital-analog converter that converts signals digital microcontroller analog, to send to the actuators (13),

-

to the minus two RS232 standard serial communication ports, one port communication to connect with the modem (3) and another to possible connections to the portable checkpoint (10).

6. Remote management system for solar and wind installations according to claim 2, characterized in that the portable control post (50) comprises:

-

a personal computer (10) equipped with an RS232 serial port from which part a cable (12) to communicate with the control module of the installation (2) to request and receive the data stored in your memories, as well as send and receive configuration parameters internal control module (2) and alarm values, through of a command language, sends the control module (2) the control instructions or the status of the actions and stores the data received from the control module (2).

-

a power supply (11) that feeds the computer (10)