Automatic control method and device for DC side equipment of photovoltaic power generation system
A photovoltaic power generation system, DC side technology, applied in photovoltaic power generation, circuit devices, electrical components, etc., can solve the problems of high implementation cost, increased hardware cost and construction cost of multi-level photovoltaic power generation system, etc.
Active Publication Date: 2018-12-28
SUNGROW POWER SUPPLY CO LTD
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Problems solved by technology
[0003] In order to realize the fully automatic control of the DC-side equipment of the photovoltaic power generation system, the DC-side equipment of the photovoltaic power generation system is usually equipped with communication modules (such as Wi-Fi modules, RS-485 communication modules, etc.), but the implementation cost is too high. In a level photovoltaic power generation system, each photovoltaic module is individually configured with a photovoltaic junction box used to cut off and access the photovoltaic module from the photovoltaic string where the photovoltaic module is located. The photovoltaic junction box can be configured in the communication module In some cases, the corresponding actions are automatically executed according to the control commands issued by the host computer; however, a multi-level photovoltaic power generation system often has many photovoltaic junction boxes. If each photovoltaic junction box is equipped with a communication module, it will lead to Substantial increase in hardware costs and construction costs
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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0030] see figure 1 , the embodiment of the present invention discloses an automatic control method for the DC side equipment of the photovoltaic power generation system, so as to realize the fully automatic control of the DC side equipment of the photovoltaic power generation system, and the implementation cost is low. The method includes:
[0031] Step 101: When the multi-level photovoltaic power generation system is in standby state, determine whether it is...
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The invention discloses an automatic control method and apparatus of a photovoltaic power generation system DC side device, wherein the method comprises the step of modulating an electrical parametric signal on a DC / DC input side into a signal that can control the photovoltaic power generation system DC side device to perform corresponding operation if the photovoltaic power generation system DC side device shall be adjusted and controlled when a multistage photovoltaic power generation system is in a standby state. In this way, the fully automated control of the photovoltaic power generation system DC side device is realized, and the cost is low.
Description
technical field [0001] The invention relates to the technical field of photovoltaic power generation, and more specifically, to an automatic control method and device for DC side equipment of a photovoltaic power generation system. Background technique [0002] The DC side equipment of the photovoltaic power generation system (such as DC combiner box, photovoltaic junction box, DC power distribution cabinet, etc.), photovoltaic modules, DC / DC converters, DC / AC converters, etc. are important components of the multi-level photovoltaic power generation system. The monitoring and maintenance of working conditions are crucial to the safe and stable operation of multi-level photovoltaic power generation systems. [0003] In order to realize the fully automatic control of the DC-side equipment of the photovoltaic power generation system, the DC-side equipment of the photovoltaic power generation system is usually equipped with communication modules (such as Wi-Fi modules, RS-485 co...
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IPC IPC(8): H02J3/38
CPCH02J3/383Y02E10/56
Inventor 俞雁飞倪华代尚方杨宗军
Owner SUNGROW POWER SUPPLY CO LTD