CN213461142U - Automatic switching device for voltage loop of acquisition terminal - Google Patents
Automatic switching device for voltage loop of acquisition terminal Download PDFInfo
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- CN213461142U CN213461142U CN202022163795.1U CN202022163795U CN213461142U CN 213461142 U CN213461142 U CN 213461142U CN 202022163795 U CN202022163795 U CN 202022163795U CN 213461142 U CN213461142 U CN 213461142U
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Abstract
The utility model discloses an automatic switching device of a voltage loop of an acquisition terminal, which is characterized in that the switching device comprises main transformer equipment and standby transformer equipment; the device comprises a three-phase three-wire form and a three-phase four-wire form; the three-phase three-wire system comprises a three-phase wire switching relay, a main power indicator lamp, a control relay primary switch KM1 and a control relay primary switch KM2, wherein the three-phase wire comprises an A-phase wire switching relay, a B-phase wire switching relay and a C-phase wire switching relay; the three-phase four-wire type switching relay comprises four phase line switching relays of an A phase, a B phase, a C phase and an N phase, a main power indicator lamp, and primary switches KM1 and KM2 of a control relay. The utility model discloses not only can guarantee each specialty to the application of special public transformer power consumption information acquisition data, satisfy the needs of the normal monitoring of electric energy quality on-line system, can also obviously improve special public transformer user's data acquisition quality, whole promotion collection system's operational reliability.
Description
Technical Field
The utility model relates to a voltage circuit automatic switching control equipment technical field, more specifically the saying so relates to collection terminal voltage circuit automatic switching control equipment.
Background
Due to the limitation of the operation mode of a primary system, the acquisition terminal and the acquisition terminal of the standby metering point are in a power failure state of equipment in the operation mode of primary system and standby system, so that the acquisition system is in a data missing reading state, and the line loss calculation and other professional data application are influenced. At present, equipment can only be restarted by manual field, and the transmission of real-time data of acquisition terminal equipment and an acquisition terminal cannot be ensured.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims to provide an acquisition terminal voltage return circuit automatic switching control equipment, it not only can guarantee each specialty to the application of special public transformer power consumption information acquisition data, satisfies the needs of the normal monitoring of electric energy quality on-line system, can also obviously improve special public transformer user's data acquisition quality, whole promotion collection system's operational reliability.
In order to achieve the above object, the utility model provides a following technical scheme:
the automatic switching device for the voltage loop of the acquisition terminal is characterized by comprising main transformer equipment and standby transformer equipment; the device comprises a three-phase three-wire form and a three-phase four-wire form; the three-phase three-wire system comprises a three-phase wire switching relay, a main power indicator lamp, a control relay primary switch KM1 and a control relay primary switch KM2, wherein the three-phase wire comprises an A-phase wire switching relay, a B-phase wire switching relay and a C-phase wire switching relay; the three-phase four-wire type switching relay comprises four phase line switching relays of an A phase, a B phase, a C phase and an N phase, a main power indicator lamp, and primary switches KM1 and KM2 of a control relay.
Preferably, in the automatic switching device for the voltage loop of the acquisition terminal, when the operation mode is that the incoming line load of the main transformer operates and the incoming line of the standby transformer is in a no-load hot standby state, the voltage of the secondary loop of the main acquisition terminal is electrified, the excitation open contact of the coil of the relay is controlled to be switched on, the locking loop of the switching relay is switched on by the KM2 to switch on the KM1 excitation loop of the switching relay, and the KM1 open contact is switched on the voltage from the secondary loop of the main transformer and outputs the voltage to the voltage loop of the main acquisition terminal and the voltage loop of the standby acquisition terminal, so that the voltage is simultaneously available at the main acquisition terminal; when the operation mode is standby transformer incoming line load operation and main transformer incoming line no-load hot standby state, the voltage of the secondary loop of the standby acquisition terminal is electrified, the closed contact of the relay is controlled to be switched on, the closed loop of the switching relay is switched on by KM1 to be switched on by KM2 to switch the excitation loop of the relay, the open contact of KM2 is switched on the voltage from the secondary loop of the standby transformer, the voltage is output to the voltage loop of the main acquisition terminal and the voltage loop of the standby acquisition terminal, and the voltage of the main acquisition terminal and the voltage of the standby acquisition terminal are simultaneously obtained when.
Preferably, in the above automatic switching apparatus for voltage loops of the collection terminals, when the voltage of the secondary loop of the primary incoming line is charged, the relay is controlled to be excited, the open contact of the relay is controlled to be closed and connected, the KM1 excitation loop is connected through the KM2 closed contact, the KM1 closed contact opens the locked standby voltage excitation loop, at this time, the standby switching relay KM2 is not excited no matter whether the voltage of the secondary loop of the standby incoming line is charged, and the open contact of the standby voltage loop is in an open state, so that the voltage incoming lines of the secondary loops of the two collection terminals come from the input of the voltage of the secondary loop of the primary incoming line no matter whether the voltage of the standby incoming line is charged, and the voltage locking of the standby; when the voltage of the secondary loop of the standby incoming line is electrified, the control relay is not excited, the closed contact of the control relay is connected, the KM2 excitation loop is connected through the KM1 closed contact, the KM2 closed contact opens and locks the primary voltage excitation loop, and at the moment, the primary switching relay KM1 is not excited and the open contact of the primary voltage loop is opened, so that whether the primary voltage incoming line is electrified or not is ensured, the voltage incoming lines of the secondary loops of the two acquisition terminals come from the input of the voltage of the secondary loop of the standby incoming line, and the voltage of the primary secondary loop of the standby secondary loop is locked.
Preferably, in the automatic switching device for the voltage loop of the acquisition terminal, when the operation mode is a main transformer inlet wire load operation state and a standby transformer inlet wire no-load hot standby state; the voltage of a primary acquisition terminal secondary loop is electrified, the excitation open contact of a relay coil is controlled to be connected, a KM1 switching relay excitation loop is connected through a KM2 switching relay latching loop, the KM1 open contact is connected with the voltage from the primary transformer secondary loop, the secondary loop electrification of the acquisition terminal is realized through a 100V or 380V voltage change-over switch, the voltage is output to a primary acquisition terminal voltage loop and a standby acquisition terminal voltage loop, and the voltage of the primary acquisition terminal and the voltage of the standby acquisition terminal are simultaneously realized when the secondary voltage of a standby incoming line does not exist; when the operation mode is standby transformer incoming line load operation and main transformer incoming line no-load hot standby state, the voltage of a secondary loop of a standby acquisition terminal is electrified, a relay closed contact is controlled to be connected, a KM1 switching relay closed loop is connected to a KM2 switching relay excitation loop, a KM2 opening contact is connected to the voltage from the secondary loop of the standby transformer, the electrification of the secondary loop of the acquisition terminal is realized through a 100V or 380V voltage change-over switch, the voltage is output to a voltage loop of the main acquisition terminal and a voltage loop of the standby acquisition terminal, and the voltage of the main acquisition terminal and the voltage of the standby acquisition terminal are simultaneously realized when the main incoming line has no secondary.
Preferably, in the above automatic switching apparatus for voltage loops of the collection terminals, when the voltage of the secondary loop of the main incoming line is charged, the relay is controlled to be excited, the open contact of the relay is controlled to be closed and connected, the KM1 excitation loop is connected through the KM2 closed contact, the KM1 closed contact opens the locked standby voltage excitation loop, at this time, the standby switching relay KM2 is not excited no matter whether the voltage of the secondary loop of the standby incoming line is charged, and the open contact of the standby voltage loop is in an open state, so that it is ensured that the voltage incoming lines of the secondary loops of the two collection terminals come from the input of the voltage of the secondary loop of the main incoming line no matter whether the voltage of; when the voltage of the secondary loop of the standby incoming line is electrified, the control relay is not excited, the closed contact of the control relay is connected, the KM2 excitation loop is connected through the KM1 closed contact, the KM2 closed contact opens and locks the primary voltage excitation loop, and at the moment, the primary switching relay KM1 is not excited and the open contact of the primary voltage loop is opened no matter whether the voltage of the secondary loop of the primary incoming line is electrified or not, so that the voltage incoming lines of the secondary loops of the two acquisition terminals come from the input of the voltage of the secondary loop of the standby incoming line.
According to the technical scheme, compared with the prior art, the utility model discloses can solve the voltage electrification problem of collection terminal and district examination table under public transformer district owner one-by-one operation mode, guarantee the normal transmission of district examination table data; the problem of online communication between the standby metering point acquisition terminal and the acquisition terminal in a one-master-multi-standby operation mode of a special transformer user can be solved, and normal transmission of acquired data is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic diagram of a three-phase three-wire structure of the present invention.
Fig. 2 is a schematic diagram of a three-phase four-wire structure according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 and 2, for the utility model discloses an automatic switching device for voltage loop of collection terminal, specifically includes:
the switching device comprises main transformer equipment and standby transformer equipment; the device comprises a three-phase three-wire form and a three-phase four-wire form; the three-phase three-wire system comprises a three-phase wire switching relay, a main power indicator lamp, a control relay primary switch KM1 and a control relay primary switch KM2, wherein the three-phase wire comprises an A-phase wire switching relay, a B-phase wire switching relay and a C-phase wire switching relay; the three-phase four-wire type switching relay comprises four phase line switching relays of an A phase, a B phase, a C phase and an N phase, a main power indicator lamp, and primary switches KM1 and KM2 of a control relay.
In order to further optimize the technical scheme, when the operation mode is that the incoming line load of the main transformer operates and the incoming line of the standby transformer is in a no-load hot standby state, the voltage of a secondary loop of the main acquisition terminal is electrified, the excitation open contact of a coil of the relay is controlled to be switched on, the KM1 switching relay excitation loop is switched on through a KM2 switching relay locking loop, the KM1 open contact is switched on the voltage from the secondary loop of the main transformer and outputs the voltage to the voltage loop of the main acquisition terminal and the voltage loop of the standby acquisition terminal, and the purpose that the main acquisition terminal and the standby acquisition terminal are simultaneously electrified when the standby; when the operation mode is standby transformer incoming line load operation and main transformer incoming line no-load hot standby state, the voltage of the secondary loop of the standby acquisition terminal is electrified, the closed contact of the relay is controlled to be switched on, the closed loop of the switching relay is switched on by KM1 to be switched on by KM2 to switch the excitation loop of the relay, the open contact of KM2 is switched on the voltage from the secondary loop of the standby transformer, the voltage is output to the voltage loop of the main acquisition terminal and the voltage loop of the standby acquisition terminal, and the voltage of the main acquisition terminal and the voltage of the standby acquisition terminal are simultaneously obtained when.
In order to further optimize the technical scheme, when the voltage of a primary incoming line secondary loop is electrified, the relay is controlled to be excited, the open contact of the relay is controlled to be closed and connected, the KM1 excitation loop is connected through the KM2 closed contact, the KM1 closed contact opens the locked standby voltage excitation loop, at the moment, the standby switching relay KM2 is not excited no matter whether the voltage of the standby incoming line secondary loop is electrified or not, the open contact of the standby voltage loop is in an open state, the secondary loop voltage incoming lines of two acquisition terminals are ensured to be from the input of the voltage of the primary incoming line secondary loop, and the voltage of the primary secondary loop is locked; when the voltage of the secondary loop of the standby incoming line is electrified, the control relay is not excited, the closed contact of the control relay is connected, the KM2 excitation loop is connected through the KM1 closed contact, the KM2 closed contact opens and locks the primary voltage excitation loop, and at the moment, the primary switching relay KM1 is not excited and the open contact of the primary voltage loop is opened, so that whether the primary voltage incoming line is electrified or not is ensured, the voltage incoming lines of the secondary loops of the two acquisition terminals come from the input of the voltage of the secondary loop of the standby incoming line, and the voltage of the primary secondary loop of the standby secondary loop is locked.
In order to further optimize the technical scheme, when the operation mode is the main transformer inlet wire load operation and the standby transformer inlet wire no-load hot standby state; the voltage of a primary acquisition terminal secondary loop is electrified, the excitation open contact of a relay coil is controlled to be connected, a KM1 switching relay excitation loop is connected through a KM2 switching relay latching loop, the KM1 open contact is connected with the voltage from the primary transformer secondary loop, the secondary loop electrification of the acquisition terminal is realized through a 100V or 380V voltage change-over switch, the voltage is output to a primary acquisition terminal voltage loop and a standby acquisition terminal voltage loop, and the voltage of the primary acquisition terminal and the voltage of the standby acquisition terminal are simultaneously realized when the secondary voltage of a standby incoming line does not exist; when the operation mode is standby transformer incoming line load operation and main transformer incoming line no-load hot standby state, the voltage of a secondary loop of a standby acquisition terminal is electrified, a relay closed contact is controlled to be connected, a KM1 switching relay closed loop is connected to a KM2 switching relay excitation loop, a KM2 opening contact is connected to the voltage from the secondary loop of the standby transformer, the electrification of the secondary loop of the acquisition terminal is realized through a 100V or 380V voltage change-over switch, the voltage is output to a voltage loop of the main acquisition terminal and a voltage loop of the standby acquisition terminal, and the voltage of the main acquisition terminal and the voltage of the standby acquisition terminal are simultaneously realized when the main incoming line has no secondary.
In order to further optimize the technical scheme, when the voltage of the primary incoming line secondary loop is electrified, the relay is controlled to be excited, the open contact of the relay is controlled to be closed and connected, the KM1 excitation loop is connected through the KM2 closed contact, the KM1 closed contact opens the locked standby voltage excitation loop, at the moment, the standby switching relay KM2 is not excited no matter whether the voltage of the standby incoming line secondary loop is electrified or not, and the open contact of the standby voltage loop is in an open state, so that the voltage incoming lines of the secondary loops of the two acquisition terminals are from the input of the voltage of the primary incoming line secondary loop; when the voltage of the secondary loop of the standby incoming line is electrified, the control relay is not excited, the closed contact of the control relay is connected, the KM2 excitation loop is connected through the KM1 closed contact, the KM2 closed contact opens and locks the primary voltage excitation loop, and at the moment, the primary switching relay KM1 is not excited and the open contact of the primary voltage loop is opened no matter whether the voltage of the secondary loop of the primary incoming line is electrified or not, so that the secondary loop voltage incoming lines of the two acquisition terminals come from the input of the voltage of the secondary loop of the standby incoming line
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. The automatic switching device for the voltage loop of the acquisition terminal is characterized by comprising main transformer equipment and standby transformer equipment; the device comprises a three-phase three-wire form and a three-phase four-wire form; the three-phase three-wire system comprises a three-phase wire switching relay, a main power indicator lamp, a control relay primary switch KM1 and a control relay primary switch KM2, wherein the three-phase wire comprises an A-phase wire switching relay, a B-phase wire switching relay and a C-phase wire switching relay; the three-phase four-wire type switching relay comprises four phase line switching relays of an A phase, a B phase, a C phase and an N phase, a main power indicator lamp, and primary switches KM1 and KM2 of a control relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022163795.1U CN213461142U (en) | 2020-09-28 | 2020-09-28 | Automatic switching device for voltage loop of acquisition terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022163795.1U CN213461142U (en) | 2020-09-28 | 2020-09-28 | Automatic switching device for voltage loop of acquisition terminal |
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| Publication Number | Publication Date |
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| CN213461142U true CN213461142U (en) | 2021-06-15 |
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| CN202022163795.1U Active CN213461142U (en) | 2020-09-28 | 2020-09-28 | Automatic switching device for voltage loop of acquisition terminal |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cang Sheng Inventor after: Wang Zhongguang Inventor after: Li Qiang Inventor after: Li Gang Inventor after: Wei Yong Inventor after: Zhu Wenjing Inventor after: Liu Yong Inventor after: Wang Guang Inventor after: Cheng Dongzhuo Inventor after: Chen Ziqiang Inventor before: Cang Sheng Inventor before: Li Qiang Inventor before: Li Gang Inventor before: Wei Yong Inventor before: Zhu Wenjing Inventor before: Liu Yong Inventor before: Wang Guang Inventor before: Cheng Dongzhuo Inventor before: Chen Ziqiang |
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| CB03 | Change of inventor or designer information |