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Renewable energy power generation and storage control device for reverse flow prevention type self-consumption

a technology of renewable energy and power generation, which is applied in the integration of power network operation systems, transportation and packaging, and reduction of greenhouse gas, etc., to achieve the effect of quick supply and easy chang

Active Publication Date: 2021-03-11
MATSUO CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0010]By the first aspect of the invention, it is possible to operate generated renewable energy power that easily changes depending on weather conditions as efficiently as possible within a range of not causing a reverse flow, and the setting value of the demand control device that changes depending on renewable energy power generation can be automatically set according to the amount of renewable energy power generation, so that an optimal demand control is enabled.
[0011]Moreover, by the second and third aspects of the invention, it is possible to automatically charge only surplus electricity according to the amount of generated renewable energy power subjected to suppression control into the energy storage equipment.
[0012]Further, by the fourth aspect of the invention, electricity can be automatically and quickly supplied from the storage battery or the like only to the on-site load within a range of not causing a reverse flow when renewable energy power generation is not performed.

Problems solved by technology

However, because of limitations related to the power grid connection capacity of the commercial power system and the voltage frequency adjustment range due to renewable energy fluctuations, shutdown of renewable power generation equipment in accordance with “output suppression regulations” has been carried out on holidays.

Method used

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  • Renewable energy power generation and storage control device for reverse flow prevention type self-consumption
  • Renewable energy power generation and storage control device for reverse flow prevention type self-consumption
  • Renewable energy power generation and storage control device for reverse flow prevention type self-consumption

Examples

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example 1

[0038]Description will be given of a renewable energy power generation and storage control device for reverse flow prevention type self-consumption according to Example 1 of the present invention by use of FIGS. 1A-B to FIG. 23.

[0039]As shown in FIGS. 1A-B, the renewable energy power generation and storage control device for reverse flow prevention type self-consumption according to the present example is configured by including a flow detecting unit 10, a flow control unit 20, a power generation control unit 30, a charge / discharge determining unit 40, a charge amount control unit 50, a discharge amount control unit 60, a setting value calculating unit 70, a demand control unit 80, renewable energy power generation equipment (in the present example, provided as photovoltaic power generation equipment of 500 kW) 110, and energy storage equipment (a storage battery device for surplus generated renewable energy power) 120.

[0040]The flow detecting unit 10 has a function of detecting ins...

example 2

[0135]Description will be given of a renewable energy power generation and storage control device for reverse flow prevention type self-consumption according to Example 2 by use of FIGS. 24A-C. The present example is different mainly in the configuration of renewable energy power generation equipment 110 and energy storage equipment 120 compared with Example 1 described above. Other configurations are generally the same, and in the following, constituents that provide the same effects as those described in Example 1 are denoted by the same reference signs to omit overlapping descriptions, and description will be given mainly of the differences from Example 1.

[0136]In the present example, because renewable energy power generation has an example that generates electricity initially as a direct current as photovoltaic power generation does, the renewable energy power generation equipment 110 (solar panels 111) is connected to a storage battery 121 via components having a directional fu...

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Abstract

A control device including a power generation amount detector, a flow detecting unit which detects an amount of flow power and outputs the flow power amount as a flow signal, a flow control unit which compares a preset target value with the flow signal and outputs a flow operation amount, a power generation control unit which outputs an amount of generated power, an instantaneous power transmitter which detects instantaneous power and outputs the instantaneous power as an instantaneous power signal, a demand control unit which outputs a demand operation amount, and a setting value calculating unit which obtains a demand target value, outputs the demand operation amount according to the result of a comparison of the demand target value with the instantaneous power signal, and determines whether to change a setting value according to the amount of power being output from the power conditioner for power generation.

Description

TECHNICAL FIELD[0001]The present invention relates to a renewable energy power generation and storage control device for reverse flow prevention type self-consumption which enables electrical grid stabilization, automatic charging and discharging of a storage battery, demand control, and energy conservation.BACKGROUND ART[0002]At present, most domestic renewable energy plans are directed toward the introduction of the full-scale purchasing scheme (FIT: Feed-in Tariff). However, because of limitations related to the power grid connection capacity of the commercial power system and the voltage frequency adjustment range due to renewable energy fluctuations, shutdown of renewable power generation equipment in accordance with “output suppression regulations” has been carried out on holidays. On the other hand, however, the government has also indicated its future intention to introduce renewable energy at nearly twice the current size of renewable energy based on the Kyoto Protocol.[000...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H02J3/14H02J3/46H02J3/24H02J3/32H02J3/38H02J7/35
CPCH02J3/14H02J3/46H02J3/24H02J2300/24H02J3/381H02J7/35H02J3/32Y02E70/30Y02P90/50Y04S20/222Y02B70/3225H02J2300/22H02J3/144H02J2310/58Y02E10/56Y02P80/20
Inventor MATSUO, TETSUGOFUJIYOSHI, NOBUHIROKENKI, SINICHITANAKA, HIDEAKISHIMA, TOSHIYUKI
Owner MATSUO CONSTR