System for distributing locally generated energy to multiple load units

A technology of load cells, power measurement, applied in the direction of load balancing in DC networks, information technology support systems, AC networks with the same frequency from different sources, etc.

Active Publication Date: 2019-03-15
SMA SOLAR TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The installation, operation and maintenance of such a central control mechanism is associated with expenses and costs

Method used

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  • System for distributing locally generated energy to multiple load units
  • System for distributing locally generated energy to multiple load units
  • System for distributing locally generated energy to multiple load units

Examples

Experimental program
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Embodiment Construction

[0026] figure 1 An exemplary configuration of the system 1 according to the invention is shown schematically. The load units 3 , 3 ′, 3 ″ are connected to the power grid 10 at the grid connection 9 . This can be, for example, a low-voltage distribution network of the public AC voltage network, which is usually provided by the grid operator and is usually polyphase Implementation. The load units 3, 3', 3" may be different dwellings of a multi-family house, floors of a building or a factory or other sub-units. Furthermore, the load units 3, 3', 3" are connected to a direct current distribution device 12, to which is also connected a common direct current source 2. The direct current source 2 can be for example a photovoltaic installation on the roof of a multi-family house. In this case, typically a DC / DC regulator (not shown) is also arranged between the PV generator and the direct current distribution device 12, the DC / DC regulator regulating the PV generator to its maximum p...

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PUM

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Abstract

The invention relates to a system (1) for distributing locally generated energy from at least one renewable direct-current source (2) to multiple local load units (3, 3', 3'') of the system (1), comprising, for each load unit (3, 3', 3''), an inlet (4) which is configured to be connected to an integrated network (10), an outlet (5) which is configured to be connected to at least one load (11, 11',11''), an inverter (6) having an inverter inlet (7) and an inverter outlet (8), wherein the inverter inlet (7) is connected to the direct-current source (2) and the inverter outlet (8) is connected to the inlet (4) and the outlet (5) of the respective load unit (3, 3', 3''), and wherein the inverter (6) converts a direct current at the inverter inlet (7) into an alternating current at the inverter outlet (8), as well as a power meter (13) having a power meter inlet (14) that is connected to the inlet (4) of the respective load unit (3, 3', 3'') in order to determine a current performance fromthe integrated network (10), and having a power meter outlet (15) that is connected to the inverter (6) of the respective load unit (3, 3', 3'') in order to transfer data relating to the current performance from the integrated network (10) to the inverter (6). The inverter (6) of the respective load unit (3, 3', 3'') determines an input DC voltage applied at the inverter inlet (7), and determinesa current power to be converted from the applied input DC voltage and the transferred performance data. The system can form part of a retrofitting kit for an electrical distributer.

Description

technical field [0001] The invention relates to a system for better distribution of locally generated energy. The system has a plurality of local load units, and locally generated energy can be supplied by means of a commonly used renewable DC power supply. Furthermore, the invention also relates to a retrofit kit for a switchboard. Background technique [0002] If several households or groups of consumers are to use a common local energy source, but at the same time also be connected to a power grid, for example a public energy grid, then, for example in the case of multi-family houses, problems arise with the distribution of locally generated energy. The distribution of energy flows to customer groups, the detection of the respective consumed energy quantities and the management regulation by the grid operator make the common use of decentralized, especially renewable energy sources expensive and consequently cost-intensive. So far, either local energy generating plants ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/14H02J3/38H02J3/00
CPCH02J2203/20H02J2310/12H02J2300/24H02J3/381H02J3/14Y02E10/56Y02E60/00Y04S40/20H02J1/002H02J1/14H02J3/08H02J3/38H02J3/388
Inventor C·阿勒特V·瓦亨费尔德A-S·布克维克-舍费尔
Owner SMA SOLAR TECH AG
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