CN112904134B - Backup automatic switching device uninterrupted power check device, backup automatic switching device and backup automatic switching method - Google Patents
Backup automatic switching device uninterrupted power check device, backup automatic switching device and backup automatic switching method Download PDFInfo
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- CN112904134B CN112904134B CN202110217845.6A CN202110217845A CN112904134B CN 112904134 B CN112904134 B CN 112904134B CN 202110217845 A CN202110217845 A CN 202110217845A CN 112904134 B CN112904134 B CN 112904134B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/003—Environmental or reliability tests
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model discloses a spare power automatic switching device does not have a power failure verifying attachment, spare power automatic switching device and method, include: the three-phase voltage source is connected with the bus and the single-phase voltage source is connected with the incoming line; a resistor is connected in series between the single-phase voltage source and the current inlet of the incoming line; and a closing button is connected to a normally closed contact of the incoming line breaker, and a breaking button is connected to a normally open contact of the incoming line breaker. By adding a voltage source and a current source on the bus and the incoming line and automatically controlling an incoming line breaker on the incoming line, the uninterrupted power check of the spare power automatic switching device is realized.
Description
Technical Field
The disclosure relates to a backup automatic switching device uninterrupted power supply verification device, a backup automatic switching device and a backup automatic switching method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The automatic switching device for standby power is a device for automatically and rapidly switching the standby power after the working power trips due to faults.
When a newly built transformer substation is completed, the whole station has no power supply and load, the automatic backup switching device can be debugged and checked, but after the transformer substation is put into operation, the transformer substation cannot power off all incoming line power supplies, and the automatic backup switching transmission test cannot meet test conditions, so that the reliability of the automatic backup switching device cannot be confirmed, after a certain incoming line is disconnected, the other incoming line cannot be closed, and the problem of power failure of the whole station is caused, and the result is very serious.
Disclosure of Invention
In order to solve the problems, the invention provides a backup automatic switching device uninterrupted power supply verification device, a backup automatic switching device and a backup automatic switching method.
In order to achieve the above purpose, the present disclosure adopts the following technical scheme:
in one or more embodiments, a backup power automatic switching device blackout verification device is provided, including:
the three-phase voltage source is connected with the bus and the single-phase voltage source is connected with the incoming line;
a resistor is connected in series between the single-phase voltage source and the current inlet of the incoming line;
and a closing button is connected to a normally closed contact of the incoming line breaker, and a breaking button is connected to a normally open contact of the incoming line breaker.
In one or more embodiments, a spare power automatic switching device is provided, including a plurality of power supply lines, every power supply line all includes the generating line, the inlet wire of being connected with the generating line sets up the inlet wire circuit breaker on the inlet wire, and the generating line of adjacent power supply line passes through the female circuit breaker to be connected, all installs a spare power automatic switching device uninterrupted power check-up device on every power supply line.
In one or more embodiments, a method for checking a spare power automatic switching device is provided, including:
combining the bus-bar circuit breaker between the bus bar #1 and the bus bar # 2;
closing the isolating switch on the #1 inlet wire, and opening the isolating switch on the #1 inlet wire;
all three-phase voltage sources are connected with a single-phase voltage source;
pressing a closing button on a #1 incoming line, wherein the #1 incoming line has current;
and (3) all the single-phase voltage sources are disconnected, the incoming line circuit breakers on the #1 incoming line are separated, and the incoming line circuit breakers on the #1 incoming line are delayed to be combined.
Compared with the prior art, the beneficial effects of the present disclosure are:
1. according to the automatic switching device, the three-phase voltage source is added on the bus of the automatic switching device, the single-phase voltage source is connected to the incoming line, the current source is connected to the incoming line, and the incoming line breaker on the incoming line is controlled, so that uninterrupted power check of the automatic switching device is realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
Fig. 1 is a substation wiring diagram of embodiment 1 of the present disclosure;
FIG. 2 is a schematic diagram of a voltage loop according to embodiment 1 of the present disclosure;
FIG. 3 is a schematic diagram of a current loop of embodiment 1 of the present disclosure;
fig. 4 is a schematic diagram of a signal control loop according to embodiment 1 of the present disclosure.
The specific embodiment is as follows:
the disclosure is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, are merely relational terms determined for convenience in describing structural relationships of the various components or elements of the present disclosure, and do not denote any one of the components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.
In the present disclosure, terms such as "fixedly coupled," "connected," and the like are to be construed broadly and refer to either a fixed connection or an integral or removable connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the disclosure may be determined according to circumstances, and should not be interpreted as limiting the disclosure, for relevant scientific research or a person skilled in the art.
Example 1
The automatic switching device comprises a plurality of power lines, each power line comprises a bus, an incoming line connected with the bus, an incoming line breaker is arranged on the incoming line, the buses of adjacent power lines are connected through the bus-bar breaker, the structure is as shown in fig. 1, and in order to achieve the uninterrupted power check of the automatic switching device, the uninterrupted power check device of the automatic switching device is connected to each power line.
The embodiment discloses a spare power automatic switching device uninterrupted power supply verifying attachment includes:
the three-phase voltage source is connected with the bus and the single-phase voltage source is connected with the incoming line;
a resistor is connected in series between the single-phase voltage source and the current inlet of the incoming line;
and a closing button is connected to a normally closed contact of the incoming line breaker, and a breaking button is connected to a normally open contact of the incoming line breaker.
Further, a normally closed contact of the incoming line circuit breaker is connected with the closing coil, and a normally open contact of the incoming line circuit breaker is connected with the opening coil.
Further, a normally closed contact of the incoming line circuit breaker is connected with the split indicating lamp, and a normally open contact of the incoming line circuit breaker is connected with the split indicating lamp.
Further, a circuit breaker is respectively connected between the three-phase voltage source and the bus and between the single-phase voltage source and the incoming line.
Further, when the normally open contact of the incoming circuit breaker is closed and the normally closed contact is opened, the KKJ of the incoming circuit breaker outputs positive potential, and the incoming circuit breaker is in a closed state;
when the normally open contact of the incoming circuit breaker is opened and the normally closed contact is closed, the TWJ of the incoming circuit breaker outputs a positive potential.
Further, normally closed contacts of the incoming line circuit breaker are connected with outlets 1 and 2 of the backup power automatic switching device uninterrupted power supply checking device, normally open contacts of the incoming line circuit breaker are connected with outlets 3 and 4 of the backup power automatic switching device uninterrupted power supply checking device, and KKJ and TWJ of the incoming line circuit breaker are respectively connected with outlets 5 and 6 of the backup power automatic switching device uninterrupted power supply checking device.
Further, when the incoming line circuit breaker is in the on-state, current is present on the incoming line.
The uninterrupted power supply verification device of the automatic power supply switching device is described in detail by taking the automatic power supply switching of the bridge connection line inlet wire in the 35kV transformer substation as an example shown in fig. 1.
The spare power automatic switching requirement of bridge connection inlet wire in 35kV transformer substation: when the 35kV I and II buses lose voltage, the #1 incoming line is free of current, the #2 incoming line is under voltage, the incoming line circuit breaker on the #1 incoming line is jumped, and after the incoming line circuit breaker on the #1 incoming line is confirmed to be jumped, the incoming line circuit breaker on the #2 incoming line is closed.
The utility model provides a spare power automatic switching device does not have a power failure verifying attachment, including voltage return circuit, current return circuit and signal control return circuit, the voltage return circuit structure is as shown in figure 2, including two three-phase alternating current power supply and two single-phase voltage source, be three-phase alternating current voltage source U1 respectively, three-phase alternating current voltage source U2, single-phase voltage source U3 and single-phase voltage source U4, the phase voltage of all voltage sources is 57.7V, with three-phase alternating current voltage source U1 and #1 generating line connection, provide voltage for #1 generating line, with three-phase alternating current voltage source U2 and #2 generating line connection, provide single-phase voltage for #2 generating line connection with single-phase alternating current voltage source U3 and #1 inlet wire connection, provide single-phase voltage for #1 with single-phase alternating current voltage source U4 and #2 inlet wire connection, provide single-phase voltage for # 2.
A breaker QF1 is connected between a three-phase alternating current voltage source U1 and a #1 bus, a breaker QF2 is connected between a three-phase alternating current voltage source U2 and a #2 bus, a breaker QF3 is connected between a single-phase alternating current voltage source U3 and a #1 inlet, a breaker QF4 is connected between a single-phase alternating current voltage source U4 and a #2 inlet, and whether voltage sources on the #1, #2 bus and the #1, #2 inlet are connected can be adjusted through opening and closing of the breakers QF1, QF2, QF3 and QF 4.
The two current loops are respectively communicated with the current inlets of the #1 wire and the #2 wire, are respectively connected with the #1 wire and the #2 wire in series, and are respectively connected with auxiliary contacts of the #1 wire and the #2 wire in series, as shown in fig. 3, and each current loop comprises a resistor connected with a single-phase voltage source in series.
The signal control loop comprises a closing button and a split indicating lamp which are connected with a normally-closed contact of the incoming line circuit breaker, and a split button and a split indicating lamp which are connected with a normally-open contact of the incoming line circuit breaker, wherein the normally-closed contact of the incoming line circuit breaker is connected with a closing coil of the incoming line circuit breaker, and the normally-open contact of the incoming line circuit breaker is connected with a split coil of the incoming line circuit breaker.
The principle is shown in fig. 4:
(1) The switching-on loop principle. When the incoming line breaker 1DL on the #1 incoming line is required to be switched on, a switching-on button HA is pressed, a switching-on coil HQ is electrified, a normally open contact of a switching-on relay is closed, the switching-on relay coil is electrified, the normally open contact of the # 1DL is closed, a normally closed contact is opened, a normally open contact is closed, a switching-on indicator lamp HW is on, and a switching-off indicator lamp FW is off. 1DL (junction 6) outputs a positive potential.
(2) The principle of a brake separating loop. When 1DL opening is needed, an opening button TA is pressed, an opening coil TQ is electrified, a tripping relay normally-closed contact TQ is opened, a closing relay coil 1DL is powered off, a 1DL normally-open contact is opened, a normally-closed contact is closed, an opening indicator light FW is on, and a TWJ (contact 5) of 1DL outputs a positive potential.
As shown in fig. 1, the transformer substation has three transformer substation operation modes, and four spare power automatic switching modes are respectively:
operation mode one of the transformer substation: the #1 wire inlet circuit breaker is combined, the female circuit breaker is combined, and the #2 wire inlet circuit breaker is separated.
And a transformer substation operation mode II: the #1 wire inlet circuit breaker is combined, the female circuit breaker is combined, and the #2 wire inlet circuit breaker is separated.
And the operation mode of the transformer substation is three: the #1 wire inlet circuit breaker is combined, the #2 wire inlet circuit breaker is combined, and the female-connection circuit breaker is separated.
Backup mode 1: the power supply is suitable for running of the power supply 1, and standby wire inlet or main transformer backup power supply of the power supply 2.
Charging conditions: the two sections of buses are both larger than the pressed fixed value, if the power supply 2 voltage is required to be larger than the pressed fixed value when the power supply 2 voltage is checked, the bus-bar circuit breaker is at the closing position, the power supply 1 wire-incoming circuit breaker is at the closing position, the power supply 2 wire-incoming circuit breaker is at the opening position, and other locking conditions are not generated.
Discharge conditions: when the position of the incoming line breaker is abnormal, the hand-jumping/shaking-jumping locking is performed, the voltage of the power supply 2 is lower than a voltage fixed value, the standby power automatic switching on/off is performed, and the incoming line breaker of the power supply 2 on the standby power automatic switching on/off is 1, the on-off position of the incoming line breaker of the power supply 1 is 0 or the on-off position of the bus-bar breaker is 0, and the like.
Action conditions: the voltage of the two sections of buses is lower than a constant value without voltage, the #1 incoming line is free of current, the voltage of the power supply 2 is required to be larger than the constant value with voltage when the power supply 2 voltage is switched on, the power supply 1 incoming line breaker is jumped through the power supply 1 tripping time, and the power supply 2 incoming line breaker is closed through the power supply 2 incoming line breaker with the power supply standby power supply time delay after the power supply 1 incoming line breaker is confirmed to be jumped off.
Backup mode 2: the power supply is suitable for running of the power supply 2, and the standby wire inlet or main transformer backup power supply of the power supply 1 is adopted.
Charging conditions: the two sections of buses are both larger than the pressed fixed value, if the power supply 1 voltage is required to be larger than the pressed fixed value when the power supply 1 voltage is checked, the bus-bar circuit breaker is at the closing position, the power supply 2 wire-incoming circuit breaker is at the closing position, the power supply 1 wire-incoming circuit breaker is at the opening position, and other locking conditions are not generated.
Discharge conditions: when the position of the incoming line breaker is abnormal, the hand-jumping/shaking-jumping locking is performed, the voltage of the power supply 1 is lower than the voltage fixed value, the standby power automatic switching on/off is performed, the power supply 1 incoming line breaker is closed, the closing position of the power supply 1 incoming line breaker is 0, or the closing position of the bus-bar breaker is 0 and the like.
Action conditions: the voltage of the two sections of buses is lower than a constant value without voltage, the #2 incoming line is free of current, the voltage of the power supply 1 is required to be larger than the constant value with voltage when the power supply 1 voltage is switched on, the power supply 2 incoming line breaker is jumped over by the power supply 2 tripping time, and the power supply 1 incoming line breaker is closed by the power supply 1 incoming line breaker after the power supply 2 incoming line breaker is confirmed to be jumped over by the power supply 2 tripping time.
Backup mode 3: the method is suitable for running of two power supplies, jump of a section (an inner bridge), incoming line of I bus voltage loss or main transformer backup power supply.
Charging conditions: the voltage of the two sections of buses is larger than the voltage fixed value, the bus-bar circuit breaker is at the opening position, the two incoming line circuit breakers are at the closing position, and no other locking conditions exist.
Discharge conditions: the position of the incoming line breaker is abnormal, the hand-jumping/hand-shaking locking is performed, the voltage of the two bus sections is lower than a voltage fixed value, the locking spare power automatic switching on/off is performed, the bus-bar breaker is closed when the 'closing position access' is 1, the closing position of the incoming line breaker of the power supply 1 is 0, or the closing position of the incoming line breaker of the power supply 2 is 0, and the like.
Action conditions: the voltage of the power supply 1 is lower than the constant value without voltage, the incoming line of the power supply 1 is not current, the voltage of the power supply II is high, and the incoming line circuit breaker of the power supply 1 is jumped through time delay, so that the circuit breaker of the power supply 1 is combined through time delay after the circuit breaker of the incoming line of the power supply 1 is jumped.
Backup mode 4: the method is suitable for running of two power supplies, jump of a section (an inner bridge), incoming line of voltage loss of a bus II or main transformer backup power supply.
Charging conditions: the voltage of the two sections of buses is larger than the voltage fixed value, the bus-bar circuit breaker is at the opening position, the two incoming line circuit breakers are at the closing position, and no other locking conditions exist.
Discharge conditions: the position of the incoming line breaker is abnormal, the hand-jumping/hand-shaking locking is performed, the voltage of the two bus sections is lower than a voltage fixed value, the locking spare power automatic switching on/off is performed, the bus-bar breaker is closed when the 'closing position access' is 1, the closing position of the incoming line breaker of the power supply 1 is 0, or the closing position of the incoming line breaker of the power supply 2 is 0, and the like.
Action conditions: the voltage of the power supply 2 is lower than the constant value without voltage, the incoming line of the power supply 2 is not current, the voltage of the power supply I is high, and after the incoming line circuit breaker of the power supply 2 is confirmed to be tripped through the delay trip, the delay trip busbar circuit breaker is closed.
The principle of the uninterrupted power check device of the automatic backup power switching device is described by combining the first operation mode and the backup power switching mode 1 of the transformer substation, and the automatic backup power switching requirement is as follows: 35kV#1 incoming line with total station load, incoming line breaker 1DL on #1 incoming line closes the position, bus-bar breaker 3DL between #1 busbar and #2 busbar closes the position, incoming line breaker 2DL on #2 incoming line divides the position
(1) System wiring: firstly, measures for preventing the complete stop of the transformer substation (mainly adopting tripping release pressing plates or tripping outlet wires) are taken. U1, U2, U3 and U4 in the backup automatic switching device uninterrupted power supply verification device are respectively connected to a bus #1, a bus #2, a bus #1 and a bus #2 of the backup automatic switching device, current loops I1 and I2 are respectively connected to a bus #1 and a current inlet of the bus #2 of the backup automatic switching device, outlets 1 and 2 of the backup automatic switching device uninterrupted power supply verification device are connected to normally closed contacts of a backup automatic switching device 1DL, outlets 3 and 4 are connected to normally open contacts of the backup automatic switching device 1DL, and outlets 5 and 6 are respectively connected to KKKJ and TWJ of the backup automatic switching device 1 DL.
(2) The test steps are as follows: the isolation disconnecting link at two sides of the incoming line breaker 2DL of the #2 incoming line is pulled open when the incoming line breaker 2DL is in the split position; QF1, QF2, QF3 and QF4 of a spare power automatic switching device uninterrupted power check device are respectively closed, so that the pressure of 35kV #1 and #2 buses is ensured, and the pressure of #1 and #2 wires is ensured; pressing a closing button HA, opening a normally closed contact of 1DL, closing a normally open contact of 1DL, lighting a closing indicator lamp HW, and lighting a standby automatic switching device according to a mode 1 after charging the indicator lamp with current in a #1 wire; the QF1 and the QF2 are disconnected to ensure that 35kV#1 and #2 buses lose voltage, the #1 incoming line I1 is free from current, the #2 incoming line U4 is pressurized, the spare power automatic switching device operates according to a mode 1, 3 and 4 contacts of the spare power automatic switching device, which are not powered off, of the checking device are closed, a tripping coil TQ is electrified, a 1DL normally open contact is opened, a normally closed contact is closed, a split indicator light FW is on, TWJ (contact 6) of 1DL outputs positive potential, TWJ of 1DL in the spare power automatic switching device is 1, after confirming that 1DL is tripped, a wire incoming breaker (2 DL) on the #1 incoming line is delayed to be closed, and the spare power automatic switching mode 1 operates correctly.
The standby mode 2 and the standby mode 3 are similar to the standby mode 4 in debugging and checking mode.
Example 2
The embodiment discloses a spare power automatic switching device, including a plurality of power supply lines, every power supply line all includes the generating line, the inlet wire of being connected with the generating line sets up the inlet wire circuit breaker on the inlet wire, and the generating line of adjacent power supply line passes through the female circuit breaker to be connected, all installs the spare power automatic switching device uninterrupted power check-up device that embodiment 1 disclosed on every power supply line.
Further, isolating switches are arranged at two ends of the incoming line breaker on the incoming line.
Example 3
The embodiment discloses a method for checking a spare power automatic switching device, which comprises the following steps:
combining the bus-bar circuit breaker between the bus bar #1 and the bus bar # 2;
closing the isolating switch on the #1 inlet wire, and opening the isolating switch on the #1 inlet wire;
all three-phase voltage sources are connected with a single-phase voltage source;
pressing a closing button on a #1 incoming line, wherein the #1 incoming line has current;
and (3) all the single-phase voltage sources are disconnected, the incoming line circuit breakers on the #1 incoming line are separated, and the incoming line circuit breakers on the #1 incoming line are delayed to be combined.
The foregoing is merely a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and variations may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (5)
1. The utility model provides a spare power automatic switching device does not have a power failure verifying attachment which characterized in that includes:
the three-phase voltage source is connected with the bus and the single-phase voltage source is connected with the incoming line; the circuit breakers are respectively connected between the three-phase voltage source and the bus and between the single-phase voltage source and the incoming line;
a resistor is connected in series between the single-phase voltage source and the current inlet of the incoming line;
a closing button is connected to a normally closed contact of the incoming line breaker, and a breaking button is connected to a normally open contact of the incoming line breaker; the normally closed contact of the incoming line breaker is connected with the closing coil, and the normally open contact of the incoming line breaker is connected with the opening coil;
when the normally open contact of the incoming circuit breaker is closed and the normally closed contact is opened, the KKJ of the incoming circuit breaker outputs positive potential, and the incoming circuit breaker is in a closed state;
when the normally open contact of the incoming circuit breaker is opened and the normally closed contact is closed, the TWJ of the incoming circuit breaker outputs positive potential;
the normally closed contacts of the incoming line circuit breaker are connected with the outlets 1 and 2 of the backup automatic switching device uninterrupted power supply checking device, the normally open contacts of the incoming line circuit breaker are connected with the outlets 3 and 4 of the backup automatic switching device uninterrupted power supply checking device, and the KKJ and TWJ of the incoming line circuit breaker are respectively connected with the outlets 5 and 6 of the backup automatic switching device uninterrupted power supply checking device;
when the incoming line breaker is in a closing state, current is supplied to the incoming line;
the two current loops are respectively communicated with current inlets of the #1 wire and the #2 wire and are used for connecting the #1 wire and the #2 wire in series with auxiliary contacts of the #1 wire and the #2 wire, and each current loop comprises a resistor connected with a single-phase voltage source in series;
the signal control loop comprises a closing button and a split indicating lamp which are connected with a normally-closed contact of the incoming line circuit breaker, and a split button and a split indicating lamp which are connected with a normally-open contact of the incoming line circuit breaker, wherein the normally-closed contact of the incoming line circuit breaker is connected with a closing coil of the incoming line circuit breaker, and the normally-open contact of the incoming line circuit breaker is connected with a split coil of the incoming line circuit breaker.
2. The backup power automatic switching device uninterrupted power check device according to claim 1, wherein the normally closed contact of the incoming line circuit breaker is connected with the split indicator lamp, and the normally open contact of the incoming line circuit breaker is connected with the split indicator lamp.
3. The automatic switching device is characterized by comprising a plurality of power lines, wherein each power line comprises a bus, an incoming line connected with the bus is provided with an incoming line breaker, the buses of adjacent power lines are connected through the bus-bar breaker, and the automatic switching device uninterrupted power supply verification device according to any one of claims 1-2 is installed on each power line.
4. A spare power automatic switching device as claimed in claim 3, wherein the incoming line is provided with disconnectors at both ends of the incoming line breaker.
5. A method for checking a backup power automatic switching device using the backup power automatic switching device blackout-free checking device according to any one of claims 1 to 2, comprising:
combining the bus-bar circuit breaker between the bus bar #1 and the bus bar # 2;
closing the isolating switch on the #1 inlet wire, and opening the isolating switch on the #1 inlet wire;
all three-phase voltage sources are connected with a single-phase voltage source;
pressing a closing button on a #1 incoming line, wherein the #1 incoming line has current;
and (3) all the single-phase voltage sources are disconnected, the incoming line circuit breakers on the #1 incoming line are separated, and the incoming line circuit breakers on the #1 incoming line are delayed to be combined.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020111124037 | 2020-10-16 | ||
| CN202011112403.7A CN112505442A (en) | 2020-10-16 | 2020-10-16 | Uninterrupted power verification device for spare power automatic switching device, spare power automatic switching device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112904134A CN112904134A (en) | 2021-06-04 |
| CN112904134B true CN112904134B (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011112403.7A Pending CN112505442A (en) | 2020-10-16 | 2020-10-16 | Uninterrupted power verification device for spare power automatic switching device, spare power automatic switching device and method |
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| CN112904134A (en) | 2021-06-04 |
| CN112505442A (en) | 2021-03-16 |
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