Cloud tracking
First Claim
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1. A cloud tracking system for a photovoltaic power plant comprising:
- a plurality of cloud shadow sensors arranged in at least two concentric rings called the outer detection perimeter and the inner detection perimeter positioned around the photovoltaic power plant,wherein the distance of the inner detection perimeter from the photovoltaic power plant is determined based at least in part on a rated capacity of the photovoltaic power plant, historical cloud speed data, and a maximum permissible ramp rate of the photovoltaic power plant, anda data collecting and process module configured to collect data from the sensors,wherein the outer detection perimeter and the inner detection perimeter are used in coordination to determine the direction and speed of cloud cover for ramp up and ramp down control of the photovoltaic array by comparing data gathered at the outer detection perimeter and the inner detection perimeter.
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Abstract
A cloud tracking system for photovoltaic power plant is disclosed. The cloud tracking system for photovoltaic power plant can include plurality of cloud shadow sensors positioned on the perimeter of the photovoltaic power plant.
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Citations
25 Claims
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1. A cloud tracking system for a photovoltaic power plant comprising:
- a plurality of cloud shadow sensors arranged in at least two concentric rings called the outer detection perimeter and the inner detection perimeter positioned around the photovoltaic power plant,
wherein the distance of the inner detection perimeter from the photovoltaic power plant is determined based at least in part on a rated capacity of the photovoltaic power plant, historical cloud speed data, and a maximum permissible ramp rate of the photovoltaic power plant, and a data collecting and process module configured to collect data from the sensors, wherein the outer detection perimeter and the inner detection perimeter are used in coordination to determine the direction and speed of cloud cover for ramp up and ramp down control of the photovoltaic array by comparing data gathered at the outer detection perimeter and the inner detection perimeter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a plurality of cloud shadow sensors arranged in at least two concentric rings called the outer detection perimeter and the inner detection perimeter positioned around the photovoltaic power plant,
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14. A method of tracking a cloud for a photovoltaic power plant comprising:
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positioning a plurality of cloud shadow sensors in two concentric rings called an outer detection perimeter and an inner detection perimeter around the photovoltaic power plant, wherein the inner detection perimeter is positioned at a distance from the photovoltaic power plant that is determined based at least in part on a rated capacity of the photovoltaic power plant, historical cloud speed data, and a maximum permissible ramp rate of the photovoltaic power plant; and collecting and processing signals from the sensors, wherein the outer detection perimeter and the inner detection perimeter are used in coordination to determine the direction and speed of cloud cover for ramp up and ramp down control of the photovoltaic array by comparing data gathered at the outer detection perimeter and the inner detection perimeter. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification