Distributed photovoltaic power station energy management system and method
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An energy management system, distributed photovoltaic technology, applied in photovoltaic power generation, system integration technology, information technology support system, etc., can solve the problems of remote monitoring and management of distributed photovoltaic power plants.
Active Publication Date: 2018-10-23
唐榆东 +1
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[0004] The purpose of the present invention is to provide an energy management system and method for distributed photovoltaic power plant
Method used
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Embodiment 1
[0038] See figure 1 , this embodiment discloses an energy management system for a distributed photovoltaic power station, including an on-site monitoring module, a control module, an inverter monitoring module, and a grid dispatching module.
[0039] The on-site monitoring module is used to obtain the power generation set value information of each power plant photovoltaic system and send it to the control module; it is also used to receive the distribution information fed back by the control module, including the distribution power value, and set the power value , and finally send the set value to the control module, and the control module performs power distribution;
[0040] The control module receives the power setting value information of the photovoltaic system of each power station and sums it up, distributes power for the inverters of each unit, and uses the PID algorithm to realize power distribution; receives the actual output power of the inverters of each unit throu...
Embodiment 2
[0046] See figure 2 , this embodiment discloses an energy management method for a distributed photovoltaic power station, which is implemented by applying the above-mentioned system and using a PID algorithm, and specifically includes the following steps:
[0047] Obtain the power generation set value information of each power plant photovoltaic system and summarize the summation;
[0048] Allocate power to inverters of each unit according to the set value;
[0049] Obtain the output power information of the grid-connected point of the inverters of each unit after passing through the local load, and summarize and sum them;
[0050] Calculate the difference between the actual output power of the inverters of each unit and the set value;
[0051] Send control information to the general dispatching of the photovoltaic system of the power station according to the obtained difference;
[0052] Obtain the power increase and decrease scheduling information of the general scheduli...
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Abstract
The invention discloses a distributed photovoltaic power station energy management system comprising a field monitoring module for acquiring the generated power set value information of each power station photovoltaic system, receiving the allocation information of a control module, and setting a power value; the control module for allocating power to each unit inverter, receiving the power set value information of a grid scheduling module, and sending the power set value information to a field monitoring module; an inverter monitoring module for monitoring the power information of each unit inverter and returning the power information to the control module; and the grid scheduling module for sending a total power set value to the control module for global allocation, and sends the grid scheduling information to the control module. The invention also discloses a distributed photovoltaic power station energy management method. The distributed photovoltaic power station energy managementsystem and method can obtain the operating state of a distributed photovoltaic power station and performs management control, achieve in-station management of the distributed photovoltaic power station, and upload the relevant data to a scheduler. The scheduler issues an active power value such that the distributed photovoltaic power station can correctly execute operations.
Description
technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to an energy management system and method for a distributed photovoltaic power station. Background technique [0002] Photovoltaic power generation is a technology that directly converts light energy into electrical energy by using the photovoltaic effect at the semiconductor interface. It is mainly composed of three parts: solar panels, controllers and inverters. Distributed photovoltaic power generation system, also known as distributed power generation or distributed energy supply, refers to a small photovoltaic power supply system configured at the user site or near the power consumption site. Under the condition of solar radiation, the solar cells of the photovoltaic power generation system The module array converts the output power from solar energy into the DC power distribution cabinet through the DC combiner box, and converts it into AC power by the g...
Claims
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