Acrel Distributed Photovoltaic Monitoring System: Promoting Efficient Development of Green Energy
In response to the pollution and resource scarcity associated with traditional energy sources, distributed photovoltaic generation has emerged as a key solution. The Acrel-1000DP distributed photovoltaic monitoring system integrates solar power forecasting technology to enhance generation stability, facilitating the efficient use of clean energy in the 8.3MW rooftop photovoltaic project of Shanghai Automotive Gearbox Co., Ltd.
Project Highlights
– **Scale and Model**: The system has a capacity of 8.3MW and operates on a “self-use, surplus electricity connected to the grid” model, allowing for revenue generation from surplus power sold to the grid.
– **Intelligent Grid Connection**: A new 10kV switching station has been established, with two connection points (3.6MW and 2.976MW), linking 527 sets of photovoltaic modules through five box transformers for flexible energy distribution.
Core Technologies
1. **Safety Protection**:
– **Fault Isolation**: Quickly disconnects from the grid during short circuits or overloads to ensure power supply continuity.
– **Anti-Islanding Protection**: Cuts off the photovoltaic source within 0.2 seconds after grid failure to prevent safety hazards.
– **Power Quality Monitoring**: Continuously analyzes harmonics and voltage fluctuations to optimize power output.
2. **Solar Power Forecasting**: Utilizes meteorological data and weather forecasts to predict short-term generation, aiding in grid scheduling and mitigating fluctuations’ impact on the grid.
3. **Data Security**: Implements vertical encryption and isolation devices to ensure data transmission remains unaltered and protected from cyberattacks.
System Architecture
– **Station Control Layer**: Centralized monitoring and data analysis, supporting intelligent scheduling.
– **Communication Layer**: Fiber optic ring network ensures stable data transmission, adaptable to various network scenarios.
– **Device Layer**: Sensors and inverters collect real-time data and execute commands.
Core Functions
– **Real-Time Monitoring**: Displays station voltage, current, power, and equipment status, enabling quick anomaly detection.
– **Generation Forecasting**: Utilizes algorithms to generate ultra-short-term and short-term power curves, enhancing scheduling efficiency.
– **Power Optimization**: Monitors voltage distortion and imbalance to ensure power quality.
– **Secure Upload**: Encrypts critical data transmission to the central control system, ensuring information reliability.
Application Value
The Acrel system integrates monitoring, forecasting, and safety protection, reducing the impact of photovoltaic generation on the grid and increasing energy utilization efficiency. The project is expected to significantly reduce carbon emissions annually while generating stable revenue through surplus power sales, exemplifying a win-win scenario for both economic and environmental goals, thus providing a benchmark for the development of distributed photovoltaics.
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Acrel Distributed Photovoltaic Monitoring System Solutions – Susie Zhou
During the 14th Five-Year Plan period, the introduction and gradual implementation of “dual carbon” goals are expected to significantly accelerate the already robust development of distributed photovoltaics. According to Tao Ye, Deputy Director of the Renewable Energy Development Center at the National Development and Reform Commission, the “dual carbon” target signifies an adjustment in national industrial structure, with new energy installations expected to maintain an annual growth rate exceeding 110GW over the next decade, encompassing both centralized and distributed photovoltaic power plants.
Distributed Photovoltaic Generation Monitoring System Solutions – New Energy/Solar
The photovoltaic generation system primarily consists of solar modules, controllers, inverters, batteries, and other components. These systems can be categorized as off-grid or grid-connected based on their dependence on the public grid. Off-grid systems operate independently and utilize batteries to ensure stable power supply, even during non-sunny periods or insufficient generation conditions.
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Acrel Distributed Photovoltaic Monitoring System – acrel15821596221
Hainan Agricultural Reclamation Group, initially part of the Hainan Provincial Agricultural Reclamation Bureau, is one of the three major reclamation areas directly under the central government. The group operates multiple livestock farms in Hainan, including projects such as the Honghua Pig Farm and the Honghua Cattle Breeding Farm. By installing distributed photovoltaics on the rooftops of these facilities, they aim to utilize generated power on-site while selling any surplus to the grid. The installed capacity at the Honghua Pig Farm and Honghua Cattle Breeding Farm is 5.5MW and 1.39MW, respectively, while the total capacity at the Bangxi Town Cattle Industry Poverty Alleviation Breeding Farm in Baisha County is 1.45MW.
Application of Acrel Distributed Photovoltaic Monitoring System in Livestock Farms
A 10kV busbar as a critical node should be equipped with fault isolation devices capable of real-time monitoring of bus frequency and voltage. Upon detecting abnormalities (such as frequency deviation or excessive voltage fluctuations), the device will promptly execute emergency control measures, automatically tripping the circuit breaker (typically a dedicated switch connecting the photovoltaic system to the grid). This effectively prevents the escalation of faults or anomalies, ensuring the safety of the grid and user equipment. In the event of a short circuit in the grid connection of a distributed photovoltaic project, the protection system should immediately activate to identify the fault and trigger action, instantaneously disconnecting the circuit breaker associated with the fault point, thereby minimizing the impact on the grid and ensuring the rapid and reliable elimination of the fault to protect the normal operation of unaffected areas.
Use self-generated power to save on electricity costs, and sell surplus energy for stable income! The Acrel Distributed Photovoltaic Monitoring System leads the future of green energy.
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The photovoltaic station installs a micro meteorological station locally to collect data on total irradiance, wind speed, wind direction, temperature, relative humidity, and atmospheric pressure. The solar power forecasting system utilizes real-time meteorological conditions, weather forecasts, and dynamic solar resource changes to predict the output power of photovoltaic stations in the short and ultra-short term. This assists power scheduling departments in rationally arranging generation plans, optimizing grid operation, and reducing the risk of instability caused by solar power fluctuations, thereby improving the grid integration efficiency and economic benefits of photovoltaic generation. The anti-islanding device monitors the grid status in real-time and, upon detecting a grid outage, can swiftly disconnect the distributed power source from the grid within the prescribed time, ensuring the safe operation of the grid and the safety of maintenance personnel.
Application of Acrel Distributed Photovoltaic Monitoring System in Haikou Group Livestock Farm Distributed Photovoltaic Project
A 10kV busbar as a critical node should be equipped with advanced fault isolation devices capable of real-time monitoring of bus frequency and voltage. Upon detecting anomalies (such as frequency deviation or excessive voltage fluctuations), the system will immediately execute emergency control measures, automatically tripping the dedicated circuit breaker connecting the photovoltaic system to the grid. This effectively prevents the escalation of faults or anomalies, ensuring the safety of the grid and user equipment. For example, the distributed photovoltaic project at the Honghua Pig Farm utilizes rooftop photovoltaic systems, with generated power utilized on-site and surplus energy sold to the grid. The power generated is boosted to 10kV via inverters and box transformers before connecting to the existing 10kV grid lines.
Distributed Photovoltaic Energy Storage Instrument: ACR10R-D24TE4 Reverse-Flow Monitoring, Efficient Energy Saving Application
The ACR10R-D24TE4 distributed photovoltaic energy storage instrument is a highly integrated and multifunctional tool that plays a significant role in enhancing energy efficiency, ensuring stable operation of distributed photovoltaic systems, and meeting power demand-side management requirements. When using this product, it is essential to follow the product instructions.
Distributed Photovoltaic Energy Storage Instrument Reverse-Flow Monitoring Meter ACR10R-D24TE4 is designed specifically for high-energy-consuming industries and distributed photovoltaic grid-connected systems. This instrument employs external Rogowski coils and split-core transformers to accurately measure and monitor harmonics, power, and current in the grid.
Research Plan on the Design and Application of Information Collection Systems for Small Capacity Distributed Photovoltaic Stations
The implementation of information collection systems for small distributed photovoltaic stations connects the collected data to monitoring platforms, presenting it clearly to users or grid enterprises. This system provides grid enterprises with data on photovoltaic station integration, eliminating the “blind tuning” phenomenon in photovoltaic generation, aiding grid operation analysis and decision-making, and promoting the safe and stable operation of the grid. This document introduces a small capacity distributed photovoltaic station information collection system with good openness and interactivity, based on the actual situation of the photovoltaic station integration in Jiaxing, Zhejiang, for reference.
Application of Acrel Meters in the New Energy Photovoltaic Energy Storage Industry Measurement Solutions
In the new energy sector, particularly in the photovoltaic energy storage industry, energy measurement solutions play a critical role. In summary, Acrel meters are instrumental in the measurement solutions for the new energy photovoltaic energy storage sector. Their advanced features and flexible applicability significantly promote the efficient utilization and sustainable development of clean energy.
Distributed Photovoltaic Monitoring Systems in the New Energy Sector and Their Applications
Acrel’s protection and measurement control products are primarily applied in distributed photovoltaic monitoring systems. This system visually displays the operational status of photovoltaic stations through distribution diagrams and monitors various electrical parameters such as voltage, current, and output power of each inverter in real time. Additionally, the system offers a comprehensive dashboard, providing insights into the overall performance.
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