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System protection device, circuit switching device and power supply system

A technology for system protection and power supply, applied in safety/protection circuits, emergency protection circuit devices, emergency protection devices with automatic disconnection, etc.

Active Publication Date: 2019-03-26
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, from the point of view of protecting the power system, since there are currently no regulations on cooperation between electric vehicles (external power sources) equipped with secondary batteries and commercial power systems, it is necessary to avoid direct damage to the commercial power system by the output current of the external power source. influences

Method used

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  • System protection device, circuit switching device and power supply system
  • System protection device, circuit switching device and power supply system
  • System protection device, circuit switching device and power supply system

Examples

Experimental program
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Embodiment Construction

[0036] 1. Structure

[0037] 1.1 Basic example

[0038] The power supply system of this embodiment includes figure 1The configuration shown is used by each customer who is supplied with commercial electric power by a power company.

[0039] The power supply system of the present embodiment includes a switchboard 1 , an external power source 2 , a connection cable 3 , a system protection device 4 ( 4A), and a circuit switching device 5 as main components.

[0040] The main line circuit W1 connected to the secondary side of the pole-mounted transformer Tr1 is introduced into the consumer side such as houses, factories, and offices to supply commercial power, and the main line circuit W1 is branched into a plurality of branch circuits W2 by the switchboard 1 in the consumer side.

[0041] The main line circuit W1 is a single-phase three-wire 200V / 100V power system, including two voltage lines (first electric line) L1, L2 and a neutral line (second electric line) N1. In additio...

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Abstract

A system protection device according to the present invention includes a transformer having a primary winding and a secondary winding electrically insulated from each other. The primary winding is connected to a first circuit connected to an external power supply supplied with AC power from a secondary battery to receive the AC power from the external power supply. The secondary winding is connected to a second circuit connected to a power supply path that supplies power to a load from a commercial power system.

Description

technical field [0001] The invention relates to a system protection device, a circuit switching device and a power supply system. Background technique [0002] Research is underway on a technology for emergency power supply from an electric vehicle equipped with a secondary battery when power infrastructure is cut off due to a disaster or the like. Specifically, electric vehicles such as electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) are connected to power wiring (hereinafter referred to as indoor wiring) installed on demand sides such as houses, factories, offices, etc. The vehicle's secondary battery supplies power to the wiring in the house. This in-house wiring is usually supplied with commercial power from a commercial power system. [0003] For example, when power is supplied from a secondary battery of an electric vehicle to indoor wiring such as a HEMS (Home Energy Management System) of a house, a device installed between a charger and dischar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06H02J7/00H02H7/26B60L53/16H02H3/32H02H3/08H02H3/24H02H3/20
CPCH02H3/08H02H3/20H02H3/24H02H3/32H02H7/26B60L3/0069B60L3/04Y02T90/14Y02T10/7072H02J7/0063B60L53/16H02J7/0031H02J7/00304Y02T10/70H02J7/00308H02J7/00714H02J7/007182H02J9/068H02J9/06
Inventor 神田雅隆上野哲山口健二
Owner PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD