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Simplified distributed power receiving and providing optimized interoperate method

An interoperable and distributed technology, applied in the fields of photovoltaic power generation, AC network circuits, electrical components, etc., to achieve the effect of simplified expression and agreed working voltage, convenient design, and simple structure

Active Publication Date: 2018-10-09
SG MICRO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Solved technical problems: adopting the form of agreeing on several voltage ranges avoids the use of complex communication control and centralized controllers to achieve power transfer optimization and interoperability, reducing fault links and engineering links

Method used

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  • Simplified distributed power receiving and providing optimized interoperate method
  • Simplified distributed power receiving and providing optimized interoperate method
  • Simplified distributed power receiving and providing optimized interoperate method

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Embodiment Construction

[0047] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0048] Such as figure 1 and Figure 3-5 As shown in the present invention, a simplified distributed power receiving and optimization interoperability method includes five types of equipment, a DC bus that allows different equipment to be connected, and different types of equipment that constrain themselves according to the voltage of the connected bus Behavioral agreement. These devices include:

[0049] Limited power generation equipment (LPG): specifically refers to the equipment whose power generation capacity is limited by objective and subjective conditions, and which cooperates with solar cells, wind power or hydropower power generation.

[0050] Elastic load equipment (EL): The load can be controlled within a certain range and used in accordance with the characteristics of the power supply. Such as cold storage, heat storage equipment, and storable...

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Abstract

The invention relates to a simplified distributed power receiving and providing optimized interoperate method. A limited power generation device, an elastic load device, a rigid load device, a power grid gateway, an inversion device and an energy storage device are hung in the same DC bus, and all the devices are connected in parallel; according to the line loss voltage difference related to the current and resistance of the DC bus of each device, 3 voltage points and 3 time parameters are determined, and 4 voltage regions are obtained by dividing according to the 3 voltage points; and the working condition of each device is determined according to the 3 voltage points, 3 time points and 4 voltage regions. The devices are independent from one another, optimization needs of the limited source and the inverter are considered respectively, the interchangeability is easy to realize, and the structure is simple; the voltage expression and working voltage convention of the limited source andthe inverter are simplified; and the conventional device types and behaviors are used to simplify interoperation of a micro energy grid composed of the limited source and the inverter, and the manufacturing and engineering cost of the system is reduced.

Description

technical field [0001] The invention relates to the technical field of photovoltaic power generation, in particular to a simplified method for optimizing interoperability of distributed power receiving and receiving. Background technique [0002] Photovoltaic optimizer: such as figure 1 As shown, there are many links that may need to be optimized in a photovoltaic inverter system; figure 1 In the middle, the left side is the photovoltaic module, the small box in the middle is the optimizer of the photovoltaic module, the upper right is the inverter, and the lower right is the controller that controls these devices for optimization. Optimization includes the optimization of the maximum output power of photovoltaic modules. If each photovoltaic module cooperates with the optimizer, there will be the optimization of the highest output of photovoltaic cells made by the optimizer, and the inverter link will have the optimization of the highest inverter efficiency. [0003] Inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/12
CPCH02J3/383H02J3/12Y02E10/56
Inventor 谭磊
Owner SG MICRO