CN103234583A - Real-time monitoring system with light measuring and wind measuring functions - Google Patents

Abstract

The invention discloses a real-time monitoring system with light measuring and wind measuring functions. The real-time monitoring system comprises a plurality of wind measuring towers and a center station, wherein the wind measuring towers and the center station realize the two-way communication, the center station comprises a central processing system and network communication equipment, each wind measuring tower comprises a remote measuring station, a light measuring station, a sensor, data collecting equipment and a power supply module, the remote measuring station is communicated with network communication equipment of the center station, the light measuring station is used for collecting light energy information, the power supply module provides direct current power supply, and the light measuring station and the sensor are electrically connected onto the remote measuring station through the data collecting equipment. The real-time monitoring system has the advantages that the integrated management is convenient, the real-time performance is good, the data volume is great, the application range is wide, and the precision is high.

Description

Real-time monitoring system including photometry and wind measurement

technical field

The invention relates to the technical field of power grid system monitoring and management, in particular to a real-time monitoring system including photometry and wind measurement functions.

Background technique

At present, photometering stations are set up in areas with better light resource conditions, and the data of humidity, temperature, air pressure, wind speed and wind direction measured around the photometering stations are observed and collected for a long time, and the changes of light energy conditions in a region are obtained. This will determine the solar energy resources in the area, and provide preliminary services for the site selection and prediction of photovoltaic power plants. Similarly, set up wind measuring towers in areas with better wind resource conditions, and observe and collect wind speed and wind direction data measured at 10m, 30m, 50m, 70m and 100m away from the wind measuring towers for a long time to obtain changes in wind energy conditions in a region , and then determine the wind energy resources in the area based on this, and provide preliminary services for the construction of wind farms.

In developed countries such as Germany, Denmark, and the United States, wind and solar energy are mainly connected in a distributed manner. The main purpose of the construction of photometric stations and anemometer towers is to evaluate regional solar energy resources and wind energy resources, and provide assistance for the site selection of photovoltaic power stations and wind farms. . The construction and use of domestic photometering stations and wind measuring towers are also used by the meteorological department for the general survey of local wind and rain resources and the site selection of photovoltaic power plants and wind farms, but there are no other related applications.

Domestic and foreign researches on wind and wind resources mostly focus on large-scale national and even global wind and wind resources assessment, or small-scale research work on the micro-site selection of photovoltaic power plants and wind farms, and the site selection of individual photometer stations and wind towers. There are few works related to wind and wind resource assessment in the region, such as photometry and wind measurement network construction for wind power bases.

With the construction of photovoltaic power plants and wind power bases across the country, a single photometering station and anemometer tower have also been built around some wind farms to observe and record light energy information and wind conditions. However, for the mesoscale level of the entire photovoltaic power station and wind power base, the situation of real-time solar energy information and wind condition observation, recording and application has not been seen before.

In the process of realizing the present invention, the inventors found that the prior art at least has defects such as decentralized management, poor real-time performance, small data volume, small application range and low accuracy.

Contents of the invention

The object of the present invention is to solve the above problems and propose a real-time monitoring system including photometry and wind measurement functions, so as to realize the advantages of convenient centralized management, good real-time performance, large amount of data, wide application range and high accuracy.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A real-time monitoring system including photometry and wind measurement functions, including a plurality of wind measurement towers and a central station, the plurality of wind measurement towers are in two-way communication with the central station, and the central station includes a central processing system and network communication equipment , the wind measuring tower includes a telemetering station communicating with the network communication equipment of the central station, a photometering station for collecting light energy information, sensors and data acquisition equipment, and a power supply module providing DC power; the photometering station and The sensors are electrically connected to the telemetry station through data acquisition equipment.

Further, the sensors include anemometer, anemometer, thermohygrometer and barometer for measurement.

Further, the telemetry station and network communication equipment include a GPRS module and an antenna.

Further, the data acquisition device communicates with the remote control station through a serial port.

Further, the data acquisition equipment adopts ACS300-MM.

Further, the central processing system is a computer or a server.

The technical solution of the present invention has the following beneficial effects:

In the technical solution of the present invention, by setting photometry and wind measurement sensors, and by transmitting the collected data to the central station, the instant communication system is adopted, thereby achieving convenient centralized management, good real-time performance, large amount of data, and wide application range and high accuracy.

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a schematic structural diagram of a real-time monitoring system including photometry and wind measurement functions described in an embodiment of the present invention;

Fig. 2 is a functional block diagram of a real-time monitoring system including photometry and wind measurement functions according to an embodiment of the present invention.

In conjunction with the accompanying drawings, the reference signs in the embodiments of the present invention are as follows:

1-sensor; 2-device; 3-workstation.

Detailed ways

The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

As shown in Figure 1, a real-time monitoring system including photometry and wind measurement functions includes multiple wind measurement towers and a central station, and multiple wind measurement towers communicate with the central station in two directions. The central station includes a central processing system and a network Communication equipment, the wind measuring tower includes a telemetering station for communicating with the network communication equipment of the central station, a photometering station for collecting light energy information, sensors and data acquisition equipment, and a power module for providing DC power; the photometering station and sensors pass through The data acquisition device is electrically connected to the telemetry station.

Among them, the sensors include anemometer, wind direction, thermohygrometer and barometer measurement. Telemetry stations and network communication equipment are said to include GPRS modules and antennas. The data acquisition equipment and the remote control station communicate through the serial port. The data acquisition equipment adopts ACS300-MM. The central processing system is a computer or server. Among them, the photometering station and sensors such as anemometer, anemometer, thermohygrometer and barometer can be installed on the anemometer tower at the same time, or they can be set separately, such as only the photometer station or only the anemometer, anemometer, Sensors such as thermo-hygrometer and barometer measurements. Set it up as needed.

This technical solution is aimed at large-scale photovoltaic bases of millions of kilowatts and large-scale wind power bases of tens of millions of kilowatts, and is suitable for large-scale wind power bases with connected sites; The distance between the station/measuring tower and the construction standard of the wind and wind power field, as well as the effect of upstream and downstream effects, complete the reasonable layout of the photometering station/measuring tower to meet the wind and photometry needs of the wind and power base; the photometry and wind measurement network layout , carry out real-time transformation of the photometry station/wind measurement tower, so that the photometry station/wind measurement tower can achieve timing (such as every 1 minute) to collect and monitor real-time light energy information and wind conditions, and communicate through GPRS modules, etc. way to the central station. The real-time monitoring system including photometry and wind measurement functions can be applied to the real-time photometry/wind measurement data in the ultra-short-term forecasting system of wind and wind power, and complete the ultra-short-term wind and wind power forecast of the wind farm around the photometer station/wind tower; At the same time, the real-time photometry/wind measurement data is applied to the wind energy forecasting and forecasting system to complete the verification work of wind energy forecasting and to monitor the local solar energy information and wind conditions, which is convenient for operators to grasp the local solar energy information and wind conditions in real time .

Taking Zhangye Photovoltaic Power Station and Jiuquan Wind Power Base as examples, the specific implementation of the real-time monitoring system including photometry and wind measurement functions in the above embodiment will be illustrated below.

The real-time monitoring system can combine the planning scope of Zhangye 100 million-kilowatt-level large-scale photovoltaic base and Jiuquan 10-million-kilowatt-level wind power, and combine the construction standards of the distance between photometry stations/wind measurement towers from photovoltaic power stations and wind power bases to complete the first phase of Zhangye photovoltaic The photometry network construction of the power station and the wind measurement network construction of the Jiuquan Phase I wind power base have realized the real-time photometry network construction covering the first phase photoelectric base in Zhangye area and the real-time wind measurement network construction of the Jiuquan Phase I wind power base. Carry out real-time monitoring of local solar energy information and wind conditions, and realize real-time monitoring and statistics of solar energy information and wind conditions through communication methods such as GPRS, and apply it to several aspects of the ultra-short-term forecasting and forecasting system for wind and solar power.

However, the original photometry station/wind measurement tower is used in the light energy information and wind condition survey of the selected area and the post-evaluation work of the built photovoltaic power station or wind farm. A single photometry station/wind measurement tower can only provide the actual Light energy information and wind conditions can at most calculate the wind and wind resources in a certain area, which can be used for the construction of photovoltaic power plants and wind farms. The short-term and ultra-short-term wind power forecasting and forecasting systems require real-time wind resource data at intervals of 1 minute. In addition to collecting data at 10-minute intervals, photometer stations/wind towers only upload data twice a day. The photometric station/measuring tower is used to determine the site of the photovoltaic power station and wind farm through the general survey of wind and solar resources. The photometering station/measuring tower is located inside the wind farm, and the measured data will be affected, which cannot meet the requirements for wind power forecasting and forecasting. However, due to independence and lack of unified planning, the photometering stations/wind measuring towers built outside a single photovoltaic power station or wind farm have not formed a network, and cannot directly provide support for wind power forecasting and forecasting.

Wind resource monitoring and acquisition is through the photometer station/wind tower and its wind speed and direction sensors, thermometers, barometers, etc., to obtain the average wind speed and direction, temperature, humidity and air pressure value of the photometer station/wind tower every 10 minutes wait. The photometric station/wind tower records the average light energy information and wind condition information every 10 minutes, and records them in its memory, and sends them to the user by email twice a day, or manually go to the photometer station/wind tower for inspection Access.

This method can only complete the census and understanding of solar energy wind conditions in the area where the photometer station/measuring tower is located, and cannot meet the requirements for real-time solar energy information and wind condition acquisition, and it cannot meet the real-time requirements of the wind and solar power ultra-short-term forecasting and forecasting system. Light energy information and wind conditions are required. However, by transforming the anemometer tower and the photometry station, and installing corresponding equipment, the photometry station/anemometer tower can measure the light energy and wind condition information every 1 minute, upload it to the user terminal in time, and carry out the measurement in time. Application of optical wind data.

Through transformation, through ACS300-MM data collection, the wind speed, wind direction, air pressure and other environmental values measured every second at Zhangye photovoltaic power station and Jiuquan wind power base can be averaged for 1 minute to calculate the 1-minute average wind speed, wind direction, air pressure, etc. value, and send it to the terminal of Lanzhou Wind Power Center through the GPRS module and antenna, and record it in the application.

In order to allow ACS300-MM and GPRS modules to operate normally, they need to be powered, and batteries and solar panels are installed on the transformed photometry station/measuring tower to supply power to the system.

After transformation, the photometry station/wind tower was changed from sending photometry and wind data twice a day to sending real-time data every 5 minutes for the ultra-short-term forecasting and forecasting system of wind and power.

The modified photometry station/wind measurement tower sends photometry and wind data every 5 minutes through the GPRS communication module. The transmission takes about 1 second. After sending the photometry and wind data, the data collector enters a dormant state , to reduce power consumption. Among the photometering stations that have been built, they communicate with the central station every 5 minutes. The photometric stations/wind measuring towers that have successfully communicated with the central station perform data transmission, and the rest of the photometry stations/wind measuring towers wait temporarily. The station can only accept real-time photometry and wind data from one photometry station/measuring tower.

In photovoltaic power stations and wind farms, as well as photometry stations and wind towers in Gansu Province, photometer stations/wind towers are established in photovoltaic power station bases and wind power bases. For the planning and layout of the first phase of photovoltaic power generation bases and wind power bases in this area, the rebuilt anemometer towers and photometry stations can basically cover the real-time photometry and wind measurement needs of all photovoltaic power plants and wind farms in this area. After completing the acquisition of real-time light energy information and wind condition data around each wind power field in the first phase of the wind power base, based on the combination of real-time photometry and wind data, the wind power ultra-short-term forecasting of each wind power field can be carried out.

The photometry and wind data are transmitted from the external network to the ultra-short-term forecasting system for wind and solar power in the three areas of the intranet, and recorded in the ultra-short-term forecasting database for wind and wind power, so as to be used in the ultra-short-term forecasting and forecasting system for wind and wind power. Ultra-short-term prediction of wind and wind farms near optical stations/measuring towers. In the ultra-short-term forecasting and forecasting, if there is no nearby real-time photometering station/measuring tower for wind and solar farms, ultra-short-term forecasting and forecasting will not be possible. The ultra-short-term forecasting and forecasting system uses statistical methods to establish the corresponding relationship between real-time photometry and wind data and photovoltaic and wind power output, and then combines real-time photometry and wind data to perform ultra-short-term wind power forecasting for 0 to 4 hours.

On the real-time monitoring platform of the ultra-short-term forecasting and forecasting system for wind and solar power, the data of real-time photometry stations/wind towers are also displayed synchronously. By accessing the comprehensive display platform, dispatchers can understand the short-term and ultra-short-term forecast values of photovoltaic and wind power output, and can also check the forecast situation of wind energy, and can also compare the current wind speed and direction data with historical wind power. The situation information is used to judge the accurate situation of wind power forecasting.

After the real-time light energy information and wind condition data of the photometering station/wind measurement tower are connected to the terminal of the wind power center, they are transmitted to the wind power real-time monitoring system through transmission, and the real-time light energy information and wind condition data of each photometry station/wind measurement tower can be The display of graphics and reports is convenient for the staff to grasp the local light energy information and wind conditions in real time.

In summary, the present invention also has the following characteristics, and the differences are mainly reflected in four aspects:

(1) The present invention is aimed at large-scale photovoltaic power plants of millions of kilowatts and large-scale wind power bases of tens of millions of kilowatts. Scale wind power base;

(2) The acquisition of scenery resource data uses a real-time photometry station/wind tower, which records light energy information and wind conditions every 1 minute and transmits them to the terminal for application in real time, which is different from the original photometer station/wind tower every 10 Record photometry and wind measurement data every minute, and send them to the terminal twice a day. The data of the original photometering station/wind measuring tower is only analyzed for one year or half a year to analyze the local light energy information and wind conditions, but in the present invention, the real-time light energy information and wind condition information are collected and utilized in time;

(3) For the entire wind power base, carry out the layout of the wind resource photometry station/measuring tower, and consider the correlation and distance between the photometer station/measuring tower and the photovoltaic power station/wind farm. The layout planning of the wind tower is different from the original photometer station/wind tower, which only considers the layout of a single wind farm;

⑷The data of real-time photometering stations/wind towers are used in ultra-short-term forecasting of wind and solar power, in wind energy forecasting, and in real-time monitoring of local light energy information and wind conditions, which have not been done before. Technology.

Finally, it should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still The technical solutions recorded in the foregoing embodiments may be modified, or some technical features thereof may be equivalently replaced. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (6)

1. A real-time monitoring system comprising photometry and wind measurement functions, characterized in that it comprises a plurality of wind measurement towers and a central station, and the plurality of wind measurement towers all communicate with the central station two-way, and the central station includes a central Processing system and network communication equipment, the wind measuring tower includes a telemetry station for communicating with the network communication equipment of the central station, a photometry station for collecting light energy information, sensors and data acquisition equipment, and a power supply module for providing DC power; The photometry station and the sensor are electrically connected to the telemetry station through data acquisition equipment. 2. The real-time monitoring system comprising photometry and wind measurement functions according to claim 1, wherein the sensors include anemometer, wind direction instrument, thermo-hygrometer and barometer measurement. 3. The real-time monitoring system comprising photometry and wind measurement functions according to claim 1 or 2, characterized in that, said telemetry station and network communication equipment comprise a GPRS module and an antenna. 4. The real-time monitoring system including photometry and wind measurement functions according to claim 1, characterized in that, the data acquisition equipment and the remote control station communicate through a serial port. 5. The real-time monitoring system including photometry and wind measurement functions according to claim 1, 2 or 4, characterized in that, the data acquisition equipment adopts ACS300-MM. 6. The real-time monitoring system comprising photometry and wind measurement functions according to claim 5, wherein the central processing system is a computer or a server.

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