Mine construction scheme content
1. Project Overview
The user of this project is a mine in Spain at a latitude of 40°25'N. It is planned to build a photovoltaic power station + energy storage.
Requirements: Power generation for 10 3KW mining machines, continuous 24-hour power supply Analysis:
1. During the day, the photovoltaic power station can realize self-consumption and balance storage. In the evening, when the photovoltaic system goes dormant, the electricity demand of the mining area needs to be supplemented by energy storage.
2. According to the available information, the following information is known:
✱Solar panel: 560W, 2278*1134*35mm
✱ No land subsidence in the construction area
✱ The location of the mining machine is fixed
✱The power consumption of the mining area is relatively regular throughout the day.
2. Preliminary Scheme Design
Form: photovoltaic + energy storage + off-grid (mains complementary)
1. Photovoltaic power station: The daily electricity demand is 840KWh, and the photovoltaic power station is calculated based on 5 hours of sunshine, and a 210KW photovoltaic power station needs to be configured. Tracking bracket: middle and high latitudes are more suitable for oblique single axis 16 solar panels each, 24 units, 215KW in total Advantages of inclined single-axis: three-point support, no shaking gap between the driving device and the rotating node, higher frame stability, strong wind resistance; each group can be installed with 10 -20 solar panels, and the inclined axis is 10°-30° Tracking the azimuth of the sun can increase the power generation by about 15%-25%; the structure is compact and the linkage units are few; the combination is flexible and adaptable; Equipped with an independent weather station to sense wind speed in real time and adjust the windward side of the system.
2. Energy storage:
lead-acid battery energy storage, peak shaving and valley filling, storage of grid power during the valley power period of the mining area, and discharge during the peak power period for use by local loads
The battery can store 768KWH of electricity, and the photovoltaic panels can generate 874KWH per day based on 5 hours of sunshine. The inverter output power is 40KW. The output AC voltage is three-phase 380V or 220V. In continuous cloudy and rainy days, if the photovoltaic panel does not generate electricity or the battery voltage is low, it can automatically switch between mains power supply and generator power supply. The battery designed in this system can last for one day when the photovoltaic power station does not generate electricity and the power grid fails.
Note: 10 mining machines cannot be started at the same time, because the power of each machine will become 4~7 times at the moment of starting, and need to be started one by one before they can be used at the same time.
1. Photovoltaic power station:
2. Energy storage:
lead-acid battery energy storage, peak shaving and valley filling, storage of grid power during the valley power period of the mining area, and discharge during the peak power period for use by local loads
The battery can store 768KWH of electricity, and the photovoltaic panels can generate 874KWH per day based on 5 hours of sunshine. The inverter output power is 40KW. The output AC voltage is three-phase 380V or 220V. In continuous cloudy and rainy days, if the photovoltaic panel does not generate electricity or the battery voltage is low, it can automatically switch between mains power supply and generator power supply. The battery designed in this system can last for one day when the photovoltaic power station does not generate electricity and the power grid fails.
Note: 10 mining machines cannot be started at the same time, because the power of each machine will become 4~7 times at the moment of starting, and need to be started one by one before they can be used at the same time.
3. List of Main Equipment
Serial Number
Model Picture Parameter
Unit
Quantity 1 Inclined Single-Axis Tracking Bracket System
Drive form: independent drive/multi-linkage
Applicable components: Common components
Number of components: 10-20 pieces
Motor power: DC 24V/1.5A×1
Track energy consumption: about 3kW·h/year/unit
Horizontal state&High wind strength: up to 40m/s
The maximum working state&High wind strength is 24m/s
Tracking range: ±45°
Technical standards and certified: CE, TUV
No tracking in rainy days, reverse tracking, night return,
Wind resistance, snow resistance, rain erosion
Terrain adaptability: 0-30° slope
Adapted to the middle and high latitude regions
Power generation increased by 15%-25%
pcs 24 2 Storage Battery
Lead acid battery 2V2000AH
Connection method: 192 strings
(two-year warranty)
pcs 384 3 MPPT Controller
Maximum charging current: 100A
Battery voltage: 384VDC
Maximum photovoltaic access power: 38400W
Working voltage range: 450V-750V
Body size: 700*490*185mm
Net weight: 39 kg
pcs 6 4 Combiner Box
800V combiner box
65 photovoltaic panels. 13 photovoltaic panels connected in series,
5 groups enter the combiner box, 1 group exits and connects
mppt controller, an MPPT controller
A combiner box is connected to the top, and 65 pieces are connected to the top
Photovoltaic panels. A total of 6 combiner boxes and 6
MPPT controller, composed of six groups of connected batteries
Group
pcs 6 5 Inverter
Rated power: 40KW
Battery voltage: 384VDC
Output voltage: 380V/220V
Warranty: 2 years
pcs 1 6 MC4 connector
MC4 connector
Note: PV cables and other wire materials are purchased locally
pcs 30
| Serial Number | Model | Picture | Parameter | Unit | Quantity |
| 1 | Inclined Single-Axis Tracking Bracket System | | Drive form: independent drive/multi-linkage Applicable components: Common components Number of components: 10-20 pieces Motor power: DC 24V/1.5A×1 Track energy consumption: about 3kW·h/year/unit Horizontal state&High wind strength: up to 40m/s The maximum working state&High wind strength is 24m/s Tracking range: ±45° Technical standards and certified: CE, TUV No tracking in rainy days, reverse tracking, night return, Wind resistance, snow resistance, rain erosion Terrain adaptability: 0-30° slope Adapted to the middle and high latitude regions Power generation increased by 15%-25% | pcs | 24 |
| 2 | Storage Battery | | Lead acid battery 2V2000AH Connection method: 192 strings (two-year warranty) | pcs | 384 |
| 3 | MPPT Controller | | Maximum charging current: 100A Battery voltage: 384VDC Maximum photovoltaic access power: 38400W Working voltage range: 450V-750V Body size: 700*490*185mm Net weight: 39 kg | pcs | 6 |
| 4 | Combiner Box | | 800V combiner box 65 photovoltaic panels. 13 photovoltaic panels connected in series, 5 groups enter the combiner box, 1 group exits and connects mppt controller, an MPPT controller A combiner box is connected to the top, and 65 pieces are connected to the top Photovoltaic panels. A total of 6 combiner boxes and 6 MPPT controller, composed of six groups of connected batteries Group | pcs | 6 |
| 5 | Inverter | | Rated power: 40KW Battery voltage: 384VDC Output voltage: 380V/220V Warranty: 2 years | pcs | 1 |
| 6 | MC4 connector | | MC4 connector Note: PV cables and other wire materials are purchased locally | pcs | 30 |
