CN203674786U - Voltage parallel cabinet AC voltage output apparatus - Google Patents

Voltage parallel cabinet AC voltage output apparatus Download PDF

Info

Publication number
CN203674786U
CN203674786U CN201320773508.6U CN201320773508U CN203674786U CN 203674786 U CN203674786 U CN 203674786U CN 201320773508 U CN201320773508 U CN 201320773508U CN 203674786 U CN203674786 U CN 203674786U
Authority
CN
China
Prior art keywords
voltage
power supply
intermediate relay
auxiliary relay
group
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201320773508.6U
Other languages
Chinese (zh)
Inventor
李云秋
李云陟
赵阳
张锦标
袁泉
刘航
王海洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
State Grid Liaoning Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Liaoning Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201320773508.6U priority Critical patent/CN203674786U/en
Application granted granted Critical
Publication of CN203674786U publication Critical patent/CN203674786U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

Disclosed is a voltage parallel cabinet AC voltage output apparatus including: a voltage parallel apparatus and a first set of DC power supplies which is connected to a power supply terminal of the voltage parallel apparatus by an intermediate relay 1DK. The voltage output apparatus is characterized in that an intermediate relay 1ZJ is connected to the first set of DC power supplies; and the output apparatus is also provided with a second set of DC power supplies which is connected to the power supply terminal of the voltage parallel apparatus by an intermediate relay 2DK and normally closed contacts 1ZJ-1 and 1ZJ-2 of the intermediate relay 1ZJ in series. The second set of DC power supplies is connected to an intermediate relay 2ZJ; and the normally open contact 1ZJ1 of the intermediate relay 1ZJ for prompting the working status, the normally open contact 2ZJ1 of the intermediate relay 2ZJ and the normally open contact 2ZJ2 of the intermediate relay 2ZJ for providing the alarm signal are connected in the signal loop in series separately. The voltage parallel apparatus is capable of working in a stable and continuous state. The reliability of the power supply of the AC voltage output apparatus is ensured and the necessary conditions of the correct motion of the protective apparatus and the automatic safety apparatus are provided.

Description

Voltage cabinet alternating voltage arranged side by side output device
Technical field
The utility model relates to the voltage cabinet alternating voltage arranged side by side output device that a kind of transformer station is used.
Background technology
At present; in transformer station, voltage parallel device is only connected to a road DC power supply; if DC power supply breaks down; voltage parallel device is by cisco unity malfunction; I, II section bus that substation connects are by decompression; will there is tripping in the line protective devices such as pilot protection, distance protection relevant with voltage in transformer station, the accidents such as backup auto-activating device malfunction simultaneously and low all device trippings also can occur.The malfunction of protection makes troubles to user's normal electricity consumption; the tripping of device can make to protect overstep tripping, expands power failure area, when the most serious situation, can make mains breakdown; bring tremendous influence to the people's daily life, bring huge economic loss to power consumer.Meanwhile, also can bring very large impact to the metering device of transformer station, the precision of metering is reduced, directly affect economic benefit.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of voltage cabinet alternating voltage arranged side by side output device, ensures that voltage parallel device can be stablized, continuous output secondary voltage, for the correct operation of protective device and automatic safety device provides necessary condition.
The voltage cabinet alternating voltage arranged side by side output device that the utility model relates to, comprise voltage parallel device, be connected on first group of DC power supply of voltage parallel device power end by auxiliary relay 1DK, its special character is: in first group of DC power supply, be connected to auxiliary relay 1ZJ, this output device is also provided with second group of DC power supply, described second group of DC power supply is by the auxiliary relay 2DK of series connection and the normally-closed contact 1ZJ-1 of auxiliary relay 1ZJ, 1ZJ-2 is connected with voltage parallel device power end, in second group of DC power supply, be connected to auxiliary relay 2ZJ, be used for the normally opened contact 1ZJ1 of the auxiliary relay 1ZJ that points out operating state, the normally opened contact 2ZJ1 of auxiliary relay 2ZJ and be serially connected in respectively signal circuit for the normally opened contact 2ZJ 2 that alarm signal is provided.
The beneficial effects of the utility model are: the in the situation that of first group of DC supply interruption; automatically switch by relay; directly second group of DC power supply come into operation; make voltage parallel device in stable, continuous operating state; ensure the reliability of alternating voltage output device power supply, for the correct operation of protective device and automatic safety device provides necessary condition.Normally opened contact 2ZJ 2 closures of auxiliary relay 2ZJ, send alarm signal simultaneously, notify operations staff to process in time.
Brief description of the drawings
Fig. 1 is circuit structure diagram of the present utility model.
Embodiment
As shown in the figure, the utility model comprises voltage parallel device, the first group of DC power supply BM1 that is connected on voltage parallel device power end by auxiliary relay 1DK and fuse is connected to auxiliary relay 1ZJ on first group of DC power supply BM1, and this output device is also provided with second group of DC power supply BM 2, described second group of DC power supply BM 2normally-closed contact 1ZJ-1, the 1ZJ-2 of auxiliary relay 2DK, fuse and auxiliary relay 1ZJ by series connection is connected with voltage parallel device power end, at second group of DC power supply BM 2on be connected to auxiliary relay 2ZJ, for point out operating state auxiliary relay 1ZJ normally opened contact 1ZJ1, auxiliary relay 2ZJ normally opened contact 2ZJ1 and be serially connected in respectively signal circuit for the normally opened contact 2ZJ 2 that alarm signal is provided.

Claims (1)

1. voltage cabinet alternating voltage arranged side by side output device, comprise voltage parallel device, be connected on first group of DC power supply of voltage parallel device power end by auxiliary relay 1DK, it is characterized in that: in first group of DC power supply, be connected to auxiliary relay 1ZJ, this output device is also provided with second group of DC power supply, described second group of DC power supply is by the auxiliary relay 2DK of series connection and the normally-closed contact 1ZJ-1 of auxiliary relay 1ZJ, 1ZJ-2 is connected with voltage parallel device power end, in second group of DC power supply, be connected to auxiliary relay 2ZJ, be used for the normally opened contact 1ZJ1 of the auxiliary relay 1ZJ that points out operating state, the normally opened contact 2ZJ1 of auxiliary relay 2ZJ and be serially connected in respectively signal circuit for the normally opened contact 2ZJ 2 that alarm signal is provided.
CN201320773508.6U 2013-12-02 2013-12-02 Voltage parallel cabinet AC voltage output apparatus Active CN203674786U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320773508.6U CN203674786U (en) 2013-12-02 2013-12-02 Voltage parallel cabinet AC voltage output apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320773508.6U CN203674786U (en) 2013-12-02 2013-12-02 Voltage parallel cabinet AC voltage output apparatus

Publications (1)

Publication Number Publication Date
CN203674786U true CN203674786U (en) 2014-06-25

Family

ID=50971038

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320773508.6U Active CN203674786U (en) 2013-12-02 2013-12-02 Voltage parallel cabinet AC voltage output apparatus

Country Status (1)

Country Link
CN (1) CN203674786U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305793B6 (en) * 2015-04-20 2016-03-16 České vysoké učení technické v Praze, Fakulta dopravní Circuit arrangement for permanent feeding of electronic units in a network disconnected from a power supply unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ305793B6 (en) * 2015-04-20 2016-03-16 České vysoké učení technické v Praze, Fakulta dopravní Circuit arrangement for permanent feeding of electronic units in a network disconnected from a power supply unit

Similar Documents

Publication Publication Date Title
CN204681157U (en) A kind of intelligent double-power control system
CN205123236U (en) Distribution lines protection device
CN103311889A (en) Manual switching protection circuit for dual power supplies
CN203674786U (en) Voltage parallel cabinet AC voltage output apparatus
CN203760864U (en) Automatic distribution-network pole-mounted switch cabinet capable of remote monitoring
CN204030294U (en) A kind of user side Intelligent operation control device of switch cabinet
CN103151830A (en) Emergency power supply automatic operation device of inner bridging line converting station
CN203660492U (en) Microcomputer comprehensive protection device having active/passive automatic switching function
CN205029421U (en) Power supply switching device
CN201717670U (en) Dual-power-supply switching device with overvoltage protection
CN203722328U (en) Apparatus capable of automatically switch power frequency electric supply in case of UPS own faults
CN204794329U (en) Single -phase electric dual supply automatic switching control equipment
CN203434595U (en) Dual power supply manual switch protection circuit
CN203967819U (en) A kind of accident lighting system
CN202872456U (en) Control device enabling automatic switching on of mains electricity supply after UPS failure in ingot casting production process
CN203233139U (en) Transformer neutral-wire break protection device
CN206804748U (en) A kind of FTU online simulations experimental rig
CN202886898U (en) Intelligent synchronous switch controller
CN201937341U (en) Non-voltage recovery device of remote monitoring type distribution room
CN204315472U (en) Safe voltage transfer relay
CN204258298U (en) A kind of low-pressure energy-saving stable-pressure device
CN104362578B (en) Can reclosing RCCB
CN204046044U (en) A kind of intelligent protection watch-dog
CN204374393U (en) Detect the warning device that instantaneous ac scurries into straight-flow system
CN203895953U (en) 220V earth leakage protection and overvoltage protection audible-visual alarm

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant