Energy storage unit and APF combined system applied to microgrid and working method

A technology of energy storage unit and combined system, which is applied in the direction of electrical components, AC network circuits, AC network load balancing, etc., can solve the problems of underutilized functions and idle status, and achieve improved power quality, increased reliability, The effect of easy-to-understand software programming

Inactive Publication Date: 2016-02-17
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The installation of the energy storage unit can make the microgrid change from rigid to flexible, but its function has not been fully utilized in practical applications, and it is even in an idle state in many cases.

Method used

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  • Energy storage unit and APF combined system applied to microgrid and working method
  • Energy storage unit and APF combined system applied to microgrid and working method
  • Energy storage unit and APF combined system applied to microgrid and working method

Examples

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Embodiment

[0039] Embodiment: a combination system of energy storage unit and APF applied to microgrid (see figure 1 ), characterized in that it includes a sampling conditioning system, a DSP control system, a drive system, a main circuit system and a protection system. Wherein, the input terminal of the sampling conditioning system collects voltage and current signals in the microgrid, and its output terminal is connected with the input terminal of the DSP control system; the output terminal of the DSP control system is connected with the input terminal of the drive system; the output terminal of the drive system is connected with the input terminal of the drive system. The input terminal of the main circuit system is connected; inside the combination system, the output terminal of the main circuit system is respectively connected to the input terminals of the sampling conditioning system and the protection system; outside the combination system, the main circuit system is bidirectional...

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Abstract

The invention provides an energy storage unit and APF combined system. The energy storage unit and APF combined system is characterized by comprising a sampling and conditioning system, a DSP control system, a driving system, a main circuit system and a protection system. A working method of the energy storage unit and APF combined system includes the steps of real-time detection, signal conditioning, compensating signal transmitting, signal conversion, computing and processing, state detection and correct operation. The energy storage unit and APF combined system and the working method have the advantages that the structure is simple, and the method is easy to understand; multiple purposes are achieved through one machine, harmonic waves can be treated, and power balance can be adjusted; the stability of busbar voltage is improved; the reliability of the combined system is improved; application prospects are good, and engineering application value is high.

Description

(1) Technical field [0001] The invention belongs to the field of micro-grid power quality regulation, and relates to a combined system and working method of an energy storage unit and an APF (Active Power Filter—Active Power Filter, APF) applied to a micro-grid. (2) Background technology [0002] The microgrid can not only operate in parallel with the large power grid, but also operate independently. For the large power grid, the microgrid can be regarded as a plug-and-play controllable "plug-in", which can respond quickly in just a few seconds to meet the requirements of the transmission system. From the user's point of view, the microgrid can be used as an adjustable power supply, which can support voltage stability in a small area, enhance the reliability of power supply in local areas, and meet the diverse and personalized needs of different users. Due to the flexible and schedulable nature of the microgrid, it can not only provide important supplements to the large pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/01H02J3/28H02J3/26
CPCH02J3/01H02J3/26H02J3/28H02J3/388H02J2203/20Y02E40/20Y02E40/50
Inventor 马步云史学伟岳巍澎臧鹏王婧苏长江
Owner STATE GRID CORP OF CHINA
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