1 Scope
This standard specifies the technical requirements for site selection, measurement elements, measurement equipment performance, installation and maintenance, measurement data transmission, and measurement data consolidation for real-time monitoring of solar energy resources in photovoltaic power stations.
This standard applies to grid-connected photovoltaic power stations.
2 Terms and Definitions
The following terms and definitions apply to this document.
2.1
Photovoltaic power station photovoltaic (PV) power station
Utilizing the photovoltaic effect of photovoltaic cells, power generation systems that convert solar radiation energy directly into electrical energy generally include transformers, inverters, and photovoltaic arrays, as well as associated auxiliary facilities.
2.2
Total radiation
The sum of direct solar radiation and scattered radiation received by a horizontal surface within a 2Ï€ solid angle.
2.3
Direct radiation
The radiation emitted from the surface of the sun and its surroundings in a small solid angle.
Note: In general, direct solar radiation is measured by an instrument with an angle of field of about 5°. Therefore, it includes some scattered radiation around the sun's surface, that is, solar radiation.
2.4
Normal direct radiation
Direct radiation received on a plane perpendicular to the sun's rays.
2.5
Scattered radiation
Solar radiation is reflected by the atmosphere or reflected by clouds, and the radiation from the sky 2Ï€ solid angle reaches the ground in the form of short waves.
2.6
Irradiance irradiance
The radiant energy received by an object in unit time and unit area.
2.7
Total solar energy global solar irradiance
Hemispherical irradiance formed by total solar radiation on the horizontal plane.
2.8
Direct irradiance direct irradiance
Directly irradiates the irradiance formed on any given plane.
2.9
Normal direct irradiance
The irradiance directly irradiated on a plane perpendicular to the beam, also known as normal direct irradiance.
2.10
Scattered radiation irradiance; diffuse irradiance; diffuse irradiance;
Hemispherical irradiance formed by scattered radiation in a given plane.
2.11
Total solar energy global solar irradiance
Hemispherical irradiance formed by total solar radiation on the horizontal plane.
2.12
Sunshine duration
The direct solar radiation irradiance is greater than or equal to the sum of the 120W/m2 time period, also known as the actual hours.
2.13
Duration of possible sunshine
In the absence of any shielding, the Sun Center goes from the eastern horizon of a certain place to the western horizon and the time it takes for the light to reach the ground.
3 measurement site requirements
The location of the meteorological monitoring equipment should be located within the scope of the photovoltaic power station, which is easy for the observers to arrive, and can better reflect the characteristics of the local meteorological elements.
4 measurement element requirements
Real-time monitoring parameters should include total irradiance (level and inclination), sunshine hours, average wind speed, average wind direction, ambient temperature, and relative humidity, and should include normal direct irradiance, scattered irradiance, and barometric pressure.
5 measurement data requirements
5.1 Measurement requirements for total irradiance data:
a) Spectral range: 280nm-3000nm;
b) Measurement accuracy: 5%.
5.2 Measurement accuracy of wind speed data: ±0.5m/s (3m/s-30m/s).
5.3 Measurement accuracy of wind direction data: ±5°.
5.4 Measurement accuracy of temperature data: ±0.5°C.
5.5 Measurement accuracy of relative humidity data: ±8%.
5.6 Measurement accuracy of air pressure data: ±0.3 hPa.
5.7 Measurement requirements for direct irradiance data:
a) Spectral range: 280nm-3000nm;
b) Measurement accuracy: 5%.
5.8 Measurement requirements for scattered irradiance data:
a) Spectral range: 280nm-3000nm;
b) Measurement accuracy: 5%.
6 measurement data transmission requirements
6.1 The transmission of measurement data should adopt wired or wireless transmission mode, and the transmission data transmission rate should not be lower than 95%.
6.2 The measurement data transmission interval should be no more than 5min, and the time delay should be less than 1min.
7 measurement data finishing requirements
7.1 The downloaded measurement data should be saved and backed up as the original original data.
7.2 No changes shall be made to the original data.
7.3 Check the data and judge the operation of the equipment.
7.4 Judging the integrity and rationality of the data, eliminating unreal data due to instrument failures, transmission errors, and other reasons.
About high speed Door Accessories:
1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box
2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light
For some main accessories, here is detain introduction:
1).24G radar sensor:
Brand: Hofic
Technology: Microwave processor
Maintain time: 0.5s
Protection: IP54
Transmitting frequency: 24.125GHz
Maximum installation height: <5meter
Transmitting power density: <5mw/cm2
Power consumption: <1W(VA)
Installation angle: 0-90°(lengthways) -30-30°(crosswise)
Supply voltage: AC&DC 12V-30V
2).Photocell:
Approval CE & ISO9001
Power supply AC/DC 12-30V
Static current 25A
Action current 40mA
Mounting distance Max 10m
NO or NC contact Done by NO./NC. contact selection
Working environment temperature -42℃ to +45℃
Working environment humidity 10 to 90%RH
Appearance dimensions( controller) 123*50*32mm(L*W*H)
Appearance dimensions(Magic eye head) 19*13mm(L*D)
3). Remote control
Operating Voltage: AC220V/50HZ+-20%
Transmit power:≤100mW;Super regenerative module, strong anti-interference
Operating temperature:-30℃-+70℃
Working frequency: 433MHZ;transmitter 1527, millions of encoding chip
Accept sensitivity:≤110dB
Manipulation method: electric remote control
Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip
Configure the function: Up, down, stop, anti-lock full-featured reproduction
4). Magnetic loop
Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V
Power: <2VA
Continued electrical output: 7A / 250V AC
Frequency range: 20 to 200K Hz
Response time: infinity (factory setting) or adjust maintain time
Sensitivity: 0.01% to 0.1% divided into 3 levels
Protection level: IP30
Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2
Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH
Operating temperature: -25 ℃ to 70 ℃
Storage temperature: -40 ℃ to 85 ℃
Relative humidity: <90% non-condensing
Temperature compensation: automatic compensation up to 50 ℃ / h
Connection type: 11 pin DIN rail socket
Dimensions: 41 * 78 * 85 mm (width * height * length)
Weight: 250 grams
5). manual push button
This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.
Door Exit Button Push To Exit Switch Door Opener For Access Control Security
Main Feature
Fashionable appearance
Made of ABS Plastic
Easy to install and operate
Used for access control
Specification
Mechanical Life: 500,000 test
Material: Plastic
6). Limit switch encoder
Voltage: DC5V-24V
Output voltage: high voltage≥85%Vcc, low voltage≤0.5V
Maximum mechanical speed:6000rpm
Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.
Current consumption:≤30mA
Response frequency: 0-100KHZ
Protection: waterproof,oil proof,dust prevention, IP54
The output code system: binary code
Operating life: MTBF≥30000(+25℃,2000rpm)
Rotational inertia:4.0x10-8kgm²
Maximum load:radial direction20N
Axial direction:10N
Weight: about 0.4kg
High Speed Door Accessories,High Speed Door,Electronic High Speed Door Accessories
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffreezerdoor.com