CN106646141A - Automatic detection method and system for direct current power supply bus loop closing - Google Patents
Automatic detection method and system for direct current power supply bus loop closing Download PDFInfo
- Publication number
- CN106646141A CN106646141A CN201710111187.6A CN201710111187A CN106646141A CN 106646141 A CN106646141 A CN 106646141A CN 201710111187 A CN201710111187 A CN 201710111187A CN 106646141 A CN106646141 A CN 106646141A
- Authority
- CN
- China
- Prior art keywords
- bus
- bar
- section
- cyclization
- ground
- 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.)
- Granted
Links
Classifications
-
- 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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/085—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution lines, e.g. overhead
Abstract
The invention discloses an automatic detection method and system for direct current power supply bus loop closing. The method comprises the following steps: a first balanced bridge and a second balanced bridge are respectively connected between a positive bus and a negative bus of a one section bus, the first balanced bridge and the second balanced bridge are grounded, a third balanced bridge and a fourth balanced bridge are respectively connected between a positive bus and a negative bus of a two section bus, the third balanced bridge and the fourth balanced bridge are grounded, voltages to earth of the positive bus and the negative bus of the one section bus are respectively obtained, voltages to earth of the positive bus and the negative bus of the two section bus are respectively obtained, and a bus loop closing type can be determined according to the obtained voltages to earth. Bus loop closing can be detected in real time, the bus loop closing type can be determined, the detection method is simple and reliable, damage caused to a power supply system by the bus loop closing can be timely prevented, and power supply safety can be improved.
Description
Technical field
The present invention relates to detection technique field, more particularly to a kind of direct current supply bus cyclization automatic testing method and its
System.
Background technology
From DC load power supply reliability viewpoint, important transformer station is from importance and meets relay protection, chopper
The power demands of tripping mechanism dual are related to two sets of DC sources.Under normal operation, two sets of DC sources are
Independent operating, i.e., one section bus and two-stage nitration bus are under normal circumstances separate.But in some cases, such as people
Make two ends bus parallel running to close a floodgate, or bus insulating property is when declining, the both positive and negative polarity of one section of bus and two-stage nitration bus it
Between can form electrical connection, referred to as bus cyclization.And because of situations such as insulating properties declines and the caused bus conjunction of wiring error
Ring can cause serious harm to whole electric power system, accordingly, it would be desirable to the type of real-time detection direct current supply bus cyclization.
The content of the invention
The technical problem to be solved is：There is provided a kind of direct current supply bus cyclization automatic testing method and its
System, the type of energy real-time detection direct current supply bus cyclization, detection method is simple and reliable.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：
A kind of automatic testing method of direct current supply bus cyclization, including：
First balanced bridge and the second balanced bridge are respectively connecting between the positive bus-bar of one section of bus and negative busbar, and
First balanced bridge and the second balanced bridge are grounded；
3rd balanced bridge and the 4th balanced bridge are respectively connecting between the positive bus-bar of two-stage nitration bus and negative busbar, and
3rd balanced bridge and the 4th balanced bridge are grounded；
The positive bus-bar and the voltage-to-ground of negative busbar and the positive bus-bar of two-stage nitration bus of one section of bus and negative mother are obtained respectively
The voltage-to-ground of line；
Voltage-to-ground according to obtaining judges the type of bus cyclization.
The present invention another technical scheme be：
A kind of automatic checkout system of direct current supply bus cyclization, including：
First link block, for the first balanced bridge and the second balanced bridge to be respectively connecting to the positive pole of one section of bus
Between line and negative busbar, and first balanced bridge and the second balanced bridge are grounded；
Second link block, for the 3rd balanced bridge and the 4th balanced bridge to be respectively connecting to the positive pole of two-stage nitration bus
Between line and negative busbar, and the 3rd balanced bridge and the 4th balanced bridge are grounded；
First acquisition module, for obtaining the positive bus-bar of one section of bus and the voltage-to-ground of negative busbar and two-stage nitration respectively
The positive bus-bar of bus and the voltage-to-ground of negative busbar；
First judge module, for the type for judging bus cyclization according to the voltage-to-ground for obtaining.
The beneficial effects of the present invention is：By distinguishing between one section of bus and the positive bus-bar and negative busbar of two-stage nitration bus
Two balanced bridges of connection, and the voltage-to-ground of one section of bus and two-stage nitration bus is obtained, can be sentenced by the voltage-to-ground for obtaining
The type of disconnected bus cyclization, convenient to be detected in real time, detection method is simple and reliable, is conducive to solving in time bus cyclization to confession
The harm that electric system is caused, improves power supply safety performance.
Description of the drawings
Fig. 1 is the flow chart of the automatic testing method of the direct current supply bus cyclization of the present invention；
Fig. 2 is the flow chart of the automatic testing method of the direct current supply bus cyclization of the embodiment of the present invention one；
Fig. 3 connects the structural representation of the first balanced bridge and the second balanced bridge for one section of bus of the embodiment of the present invention two
Figure；
Fig. 4 is the structural representation of the automatic checkout system of the direct current supply bus cyclization of the present invention；
Fig. 5 is the structural representation of the automatic checkout system of the direct current supply bus cyclization of the embodiment of the present invention three.
Label declaration：
1st, the first link block；2nd, the second link block；3rd, the first acquisition module；
4th, the first judge module；5th, the first computing module；6th, the second computing module；
7th, the second judge module；8th, the second acquisition module.
Specific embodiment
To describe the technology contents of the present invention in detail, being realized purpose and effect, below in conjunction with embodiment and coordinate attached
Figure is explained.
The design of most critical of the present invention is：By dividing between one section of bus and the positive bus-bar and negative busbar of two-stage nitration bus
Not Lian Jie two balanced bridges, and the voltage-to-ground of one section of bus and two-stage nitration bus is obtained, by the voltage-to-ground for obtaining
Judge the type of bus cyclization.
Refer to Fig. 1 and Fig. 2, a kind of automatic testing method of direct current supply bus cyclization, including：
First balanced bridge and the second balanced bridge are respectively connecting between the positive bus-bar of one section of bus and negative busbar, and
First balanced bridge and the second balanced bridge are grounded；
3rd balanced bridge and the 4th balanced bridge are respectively connecting between the positive bus-bar of two-stage nitration bus and negative busbar, and
3rd balanced bridge and the 4th balanced bridge are grounded；
The positive bus-bar and the voltage-to-ground of negative busbar and the positive bus-bar of two-stage nitration bus of one section of bus and negative mother are obtained respectively
The voltage-to-ground of line；
Voltage-to-ground according to obtaining judges the type of bus cyclization.
Knowable to foregoing description, the beneficial effects of the present invention is：By the positive bus-bar in one section of bus and two-stage nitration bus
Connect two balanced bridges respectively and negative busbar between, each balanced bridge can include multiple resistance, the resistance of resistance
Can be adjusted as the case may be, by connect balanced bridge can obtain one section of bus, the positive bus-bar of two-stage nitration bus,
The voltage-to-ground of negative busbar, the size of the voltage-to-ground by obtaining, you can judge the bus of one section of bus and two-stage nitration bus
The type of cyclization, it is simple to operate, be conducive to technical staff to detect to the type of bus cyclization in real time, improve whole power supply system
The security performance of system power supply.
Further, first balanced bridge include resistance R1 and R2, second balanced bridge include resistance R3 and
R4, the 3rd balanced bridge includes resistance R5 and R6, and the 4th balanced bridge includes resistance R7 and R8.
Seen from the above description, each balanced bridge includes two resistance, the resistance of the resistance of different balanced bridges
Can be set to identical, it is also possible to be set to difference, for the ease of the reliability for calculating and ensureing to test, can by the first balanced bridge and
The resistance of the 3rd balanced bridge be set to it is the same, the resistance of the second balanced bridge and the 4th balanced bridge is set to.
Further, it is described " to obtain the voltage-to-ground and two-stage nitration bus of the positive bus-bar and negative busbar of one section of bus respectively
Positive bus-bar and negative busbar voltage-to-ground " specifically include：
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead, obtain described
The voltage-to-ground V of the positive bus-bar of one section of bus1+；
The first end of R2 is connected with the negative busbar of one section of bus, second end of R2 is connected with earth lead, obtain described
The voltage-to-ground V of the negative busbar of one section of bus1-；
The first end of R7 is connected with the positive bus-bar of two-stage nitration bus, second end of R7 is connected with earth lead, obtain described
The voltage-to-ground V of the positive bus-bar of two-stage nitration bus2+；
The first end of R8 is connected with the negative busbar of two-stage nitration bus, second end of R8 is connected with earth lead, obtain described
The voltage-to-ground V of the negative busbar of two-stage nitration bus2-；
The positive bus-bar of R1 and one section of bus or the connection with earth lead are disconnected, by the first end of R3 and one section of bus just
Bus connects, and second end of R3 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of one section of bus1x+；
The negative busbar of R2 and one section of bus or the connection with earth lead are disconnected, by bearing for the first end of R4 and one section of bus
Bus connects, and second end of R4 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of one section of bus1x-；
Positive bus-bars of the R7 with two-stage nitration bus or the connection with earth lead are disconnected, by the first end of R5 and two-stage nitration bus just
Bus connects, and second end of R7 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of the two-stage nitration bus2x+；
Negative busbars of the R8 with two-stage nitration bus or the connection with earth lead are disconnected, the first end of R6 is negative with two-stage nitration bus
Bus connects, and second end of R8 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of the two-stage nitration bus2x-。
Further, as abs (V1+-V1-) ＞ abs (V2x+-V2x-) when, the type of the bus cyclization is one section of bus
Negative busbar cyclization of the positive bus-bar to two-stage nitration bus；
As abs (V1x+-V1x-) ＜ abs (V2+-V2-) when, the type of the bus cyclization is the negative busbar pair of one section of bus
The positive bus-bar cyclization of two-stage nitration bus.
Seen from the above description, the type of bus cyclization can be judged by the absolute value of voltage-to-ground difference.
Further, the negative busbar cyclization when the positive bus-bar that the type of the bus cyclization is one section of bus to two-stage nitration bus
When, according to the V for obtaining1+、V1-、V1x+、V1x-And the resistance value of R1, R2, R3 and R4 calculates the resistance value of bus cyclization；
When positive bus-bar cyclization of the negative busbar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to obtaining
The V for taking2+、V2-、V2x+、V2x-And the resistance value of R5, R6, R7 and R8 calculates the resistance value of bus cyclization.
Seen from the above description, cyclization resistance value is calculated beneficial to the order of severity for judging cyclization, when cyclization resistance value is less than
During preset value, staff is facilitated to take appropriate measures.
Further, if the type of bus cyclization can not be judged according to the voltage-to-ground for obtaining, according to the first balance
The resistance and the voltage-to-ground of acquisition of the resistance in electric bridge, the second balanced bridge, the 3rd balanced bridge and the 4th balanced bridge,
Calculate the resistance value of bus cyclization；
The type of bus cyclization is judged according to the resistance value of the bus cyclization.
Seen from the above description, when the type of bus cyclization can not be judged according to voltage-to-ground, can be closed according to bus
The resistance value of ring judges the type of bus cyclization.
Further, the first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead；
The first end of R2 is connected with the negative busbar of one section of bus, second end of R2 is connected with earth lead；By the first end of R3 and
The positive bus-bar connection of section bus, second end of R3 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11+
With the voltage-to-ground V of the negative busbar of one section of bus11-；
The first end of R5 is connected with the positive bus-bar of two-stage nitration bus, second end of R5 is connected with earth lead；By the of R6
The negative busbar connection of the two-stage nitration bus of one end one, second end of R6 is connected with earth lead；By the first end of R8 and two-stage nitration bus
Negative busbar connects, and second end of R8 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22+It is female with two-stage nitration
The voltage-to-ground V of the negative busbar of line22-；
Positive bus-bar or the connection with earth lead of R1, R3 and one section of bus are disconnected, R2 and one section of bus negative busbar is disconnected
Or the connection with earth lead, the first end of R4 is connected with the negative busbar of one section of bus, second end of R4 and earth lead are connected
Connect；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11x+With the voltage-to-ground V of the negative busbar of one section of bus11x-；
The first end of R5 and the positive bus-bar of two-stage nitration bus or the connection with earth lead are disconnected, R6, R8 is disconnected and two-stage nitration is female
The negative busbar of line or the connection with earth lead, the first end of R7 is connected with the positive bus-bar of two-stage nitration bus, by second end of R7
It is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22x+With the voltage-to-ground of the negative busbar of two-stage nitration bus
V22x-。
Further, according to V11+、V11-、V22+、V22-、V11x+、V11x-、V22x+、V22x-And R1, R2, R3, R4, R5, R6,
The resistance value of the computing the resistor value bus cyclization of R7 and R8；
When the resistance value is timing, the type of the bus cyclization be one section of bus positive bus-bar to two-stage nitration bus just
Bus cyclization；
When the resistance value for it is negative when, the type of the bus cyclization is that the negative busbar of one section of bus is born to two-stage nitration bus
Bus cyclization.
Seen from the above description, when the type of bus cyclization can not be judged by voltage-to-ground, can be by being calculated
Resistance value positive negative judgement bus cyclization type.
Fig. 4 and Fig. 5 is refer to, another technical scheme of the present invention is：
A kind of automatic checkout system of direct current supply bus cyclization, including：
First link block, for the first balanced bridge and the second balanced bridge to be respectively connecting to the positive pole of one section of bus
Between line and negative busbar, and first balanced bridge and the second balanced bridge are grounded；
Second link block, for the 3rd balanced bridge and the 4th balanced bridge to be respectively connecting to the positive pole of two-stage nitration bus
Between line and negative busbar, and the 3rd balanced bridge and the 4th balanced bridge are grounded；
First acquisition module, for obtaining the positive bus-bar of one section of bus and the voltage-to-ground of negative busbar and two-stage nitration respectively
The positive bus-bar of bus and the voltage-to-ground of negative busbar；
First judge module, for the type for judging bus cyclization according to the voltage-to-ground for obtaining.
Further, first balanced bridge include resistance R1 and R2, second balanced bridge include resistance R3 and
R4, the 3rd balanced bridge includes resistance R5 and R6, and the 4th balanced bridge includes resistance R7 and R8.
Further, first acquisition module specifically for：
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead, obtain described
The voltage-to-ground V of the positive bus-bar of one section of bus1+；
The first end of R2 is connected with the negative busbar of one section of bus, second end of R2 is connected with earth lead, obtain described
The voltage-to-ground V of the negative busbar of one section of bus1-；
The first end of R7 is connected with the positive bus-bar of two-stage nitration bus, second end of R7 is connected with earth lead, obtain described
The voltage-to-ground V of the positive bus-bar of two-stage nitration bus2+；
The first end of R8 is connected with the negative busbar of two-stage nitration bus, second end of R8 is connected with earth lead, obtain described
The voltage-to-ground V of the negative busbar of two-stage nitration bus2-；
The positive bus-bar of R1 and one section of bus or the connection with earth lead are disconnected, by the first end of R3 and one section of bus just
Bus connects, and second end of R3 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of one section of bus1x+；
The negative busbar of R2 and one section of bus or the connection with earth lead are disconnected, by bearing for the first end of R4 and one section of bus
Bus connects, and second end of R4 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of one section of bus1x-；
Positive bus-bars of the R7 with two-stage nitration bus or the connection with earth lead are disconnected, by the first end of R5 and two-stage nitration bus just
Bus connects, and second end of R7 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of the two-stage nitration bus2x+；
Negative busbars of the R8 with two-stage nitration bus or the connection with earth lead are disconnected, the first end of R6 is negative with two-stage nitration bus
Bus connects, and second end of R8 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of the two-stage nitration bus2x-。
Further, first judge module specifically for：
As abs (V1+-V1-) ＞ abs (V2x+-V2x-) when, the type of the bus cyclization is the positive bus-bar pair of one section of bus
The negative busbar cyclization of two-stage nitration bus；
As abs (V1x+-V1x-) ＜ abs (V2+-V2-) when, the type of the bus cyclization is the negative busbar pair of one section of bus
The positive bus-bar cyclization of two-stage nitration bus.
Further, also it is used for including the first computing module：
When negative busbar cyclization of the positive bus-bar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to obtaining
The V for taking1+、V1-、V1x+、V1x-And the resistance value of R1, R2, R3 and R4 calculates the resistance value of bus cyclization；
When positive bus-bar cyclization of the negative busbar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to obtaining
The V for taking2+、V2-、V2x+、V2x-And the resistance value of R5, R6, R7 and R8 calculates the resistance value of bus cyclization.
Further, also include：
Second computing module, if for can not according to obtain voltage-to-ground judge the type of bus cyclization when, basis
The resistance of the resistance in the first balanced bridge, the second balanced bridge, the 3rd balanced bridge and the 4th balanced bridge and acquisition
Voltage-to-ground, calculates the resistance value of bus cyclization；
Second judge module, for judging the type of bus cyclization according to the resistance value of the bus cyclization.
Further, also it is used for including the second acquisition module：
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead；By the of R2
One end is connected with the negative busbar of one section of bus, and second end of R2 is connected with earth lead；By the first end of R3 and one section of bus
Positive bus-bar connects, and second end of R3 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11+With one section of mother
The voltage-to-ground V of the negative busbar of line11-；
The first end of R5 is connected with the positive bus-bar of two-stage nitration bus, second end of R5 is connected with earth lead；By the of R6
The negative busbar connection of the two-stage nitration bus of one end one, second end of R6 is connected with earth lead；By the first end of R8 and two-stage nitration bus
Negative busbar connects, and second end of R8 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22+It is female with two-stage nitration
The voltage-to-ground V of the negative busbar of line22-；
Positive bus-bar or the connection with earth lead of R1, R3 and one section of bus are disconnected, R2 and one section of bus negative busbar is disconnected
Or the connection with earth lead, the first end of R4 is connected with the negative busbar of one section of bus, second end of R4 and earth lead are connected
Connect；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11x+With the voltage-to-ground V of the negative busbar of one section of bus11x-；
The first end of R5 and the positive bus-bar of two-stage nitration bus or the connection with earth lead are disconnected, R6, R8 is disconnected and two-stage nitration is female
The negative busbar of line or the connection with earth lead, the first end of R7 is connected with the positive bus-bar of two-stage nitration bus, by second end of R7
It is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22x+With the voltage-to-ground of the negative busbar of two-stage nitration bus
V22x-。
Further, second computing module specifically for：
According to V11+、V11-、V22+、V22-、V11x+、V11x-、V22x+、V22x-And R1, R2, R3, R4, R5, R6, R7 and R8
The resistance value of computing the resistor value bus cyclization；
Second judge module specifically for：
When the resistance value is timing, the type of the bus cyclization be one section of bus positive bus-bar to two-stage nitration bus just
Bus cyclization；
When the resistance value for it is negative when, the type of the bus cyclization is that the negative busbar of one section of bus is born to two-stage nitration bus
Bus cyclization.
Embodiment one
Fig. 2 is refer to, embodiments of the invention one are：A kind of automatic testing method of direct current supply bus cyclization, can use
In real-time detection bus cyclization type and calculate cyclization resistance value, including：
S1, the first balanced bridge and the second balanced bridge are respectively connecting to one section of bus positive bus-bar and negative busbar it
Between, and first balanced bridge and the second balanced bridge are grounded.
S2, the 3rd balanced bridge and the 4th balanced bridge are respectively connecting to two-stage nitration bus positive bus-bar and negative busbar it
Between, and the 3rd balanced bridge and the 4th balanced bridge are grounded.
In the present embodiment, first balanced bridge includes resistance R1 and R2, and second balanced bridge includes resistance R3
And R4, the 3rd balanced bridge include resistance R5 and R6, the 4th balanced bridge include resistance R7 and R8.Of course, it is possible to
Connect more resistance as needed, the resistance of resistance can also set as the case may be.It is excellent for the ease of testing and calculating
First, the resistance of R1 and R5 can be set to identical, and the resistance of R2 and R6 can be set to identical, and the resistance of R3 and R7 can be set to phase
Together, the resistance of R4 and R8 can be set to identical.
S3, the positive bus-bar and the voltage-to-ground of negative busbar and the positive bus-bar of two-stage nitration bus that obtain one section of bus respectively and
The voltage-to-ground of negative busbar.Specifically include：
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead, obtain described
The voltage-to-ground V of the positive bus-bar of one section of bus1+；
The first end of R2 is connected with the negative busbar of one section of bus, second end of R2 is connected with earth lead, obtain described
The voltage-to-ground V of the negative busbar of one section of bus1-；
The first end of R7 is connected with the positive bus-bar of two-stage nitration bus, second end of R7 is connected with earth lead, obtain described
The voltage-to-ground V of the positive bus-bar of two-stage nitration bus2+；
The first end of R8 is connected with the negative busbar of two-stage nitration bus, second end of R8 is connected with earth lead, obtain described
The voltage-to-ground V of the negative busbar of two-stage nitration bus2-；
The positive bus-bar of R1 and one section of bus or the connection with earth lead are disconnected, by the first end of R3 and one section of bus just
Bus connects, and second end of R3 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of one section of bus1x+；
The negative busbar of R2 and one section of bus or the connection with earth lead are disconnected, by bearing for the first end of R4 and one section of bus
Bus connects, and second end of R4 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of one section of bus1x-；
Positive bus-bars of the R7 with two-stage nitration bus or the connection with earth lead are disconnected, by the first end of R5 and two-stage nitration bus just
Bus connects, and second end of R7 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of the two-stage nitration bus2x+；
Negative busbars of the R8 with two-stage nitration bus or the connection with earth lead are disconnected, the first end of R6 is negative with two-stage nitration bus
Bus connects, and second end of R8 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of the two-stage nitration bus2x-。
In the present embodiment, switch is preferably equipped with the positive bus-bar of R1 and one section of bus and between earth lead, is used for
The access or disconnection of control R1, in the same manner, at first end and second end of R2, R3, R4, R5, R6, R7 and R8 switch is equipped with,
Convenient control, depending on the visual actual concrete condition of number and location of switch.
S4, the type that bus cyclization is judged according to the voltage-to-ground for obtaining.Specifically include：
As abs (V1+-V1-) ＞ abs (V2x+-V2x-) when, the type of the bus cyclization is the positive bus-bar pair of one section of bus
The negative busbar cyclization of two-stage nitration bus；
As abs (V1x+-V1x-) ＜ abs (V2+-V2-) when, the type of the bus cyclization is the negative busbar pair of one section of bus
The positive bus-bar cyclization of two-stage nitration bus.
S5, the resistance value that bus cyclization is calculated according to the voltage-to-ground and resistance value for obtaining.Specifically include：
When negative busbar cyclization of the positive bus-bar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to obtaining
The V for taking1+、V1-、V1x+、V1x-And the resistance value of R1, R2, R3 and R4 calculates the resistance value of bus cyclization；With specific reference to formula：To calculate.
When positive bus-bar cyclization of the negative busbar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to obtaining
The V for taking2+、V2-、V2x+、V2x-And the resistance value of R5, R6, R7 and R8 calculates the resistance value of bus cyclization；With specific reference to formula：To calculate.
In the present embodiment, the serious journey of bus cyclization may determine that by the resistance value of calculated bus cyclization
Degree, when calculated resistance value is less than a certain preset value, even if needing to take measures to solve the problems, such as bus cyclization, in order to avoid
Serious consequence is brought for whole electric power system.
In the present embodiment, when the type of bus cyclization can not be judged by above-mentioned decision procedure, need by as follows
Mode is carried out：
If S6, when can not judge the type of bus cyclization according to the voltage-to-ground for obtaining, according to the first balanced bridge, the
The resistance and the voltage-to-ground of acquisition of the resistance in two balanced bridges, the 3rd balanced bridge and the 4th balanced bridge, calculates female
The resistance value of line cyclization；
The type of bus cyclization is judged according to the resistance value of the bus cyclization.
Specifically, the method for acquisition voltage-to-ground is：
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead；By the of R2
One end is connected with the negative busbar of one section of bus, and second end of R2 is connected with earth lead；By the first end of R3 and one section of bus
Positive bus-bar connects, and second end of R3 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11+With one section of mother
The voltage-to-ground V of the negative busbar of line11-；
The first end of R5 is connected with the positive bus-bar of two-stage nitration bus, second end of R5 is connected with earth lead；By the of R6
The negative busbar connection of the two-stage nitration bus of one end one, second end of R6 is connected with earth lead；By the first end of R8 and two-stage nitration bus
Negative busbar connects, and second end of R8 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22+It is female with two-stage nitration
The voltage-to-ground V of the negative busbar of line22-；
Positive bus-bar or the connection with earth lead of R1, R3 and one section of bus are disconnected, R2 and one section of bus negative busbar is disconnected
Or the connection with earth lead, the first end of R4 is connected with the negative busbar of one section of bus, second end of R4 and earth lead are connected
Connect；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11x+With the voltage-to-ground V of the negative busbar of one section of bus11x-；
The first end of R5 and the positive bus-bar of two-stage nitration bus or the connection with earth lead are disconnected, R6, R8 is disconnected and two-stage nitration is female
The negative busbar of line or the connection with earth lead, the first end of R7 is connected with the positive bus-bar of two-stage nitration bus, by second end of R7
It is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22x+With the voltage-to-ground of the negative busbar of two-stage nitration bus
V22x-。
After obtaining voltage-to-ground：
According to V11+、V11-、V22+、V22-、V11x+、V11x-、V22x+、V22x-And R1, R2, R3, R4, R5, R6, R7 and R8
The resistance value of computing the resistor value bus cyclization；Specifically, can be according to formula：To calculate；
When the resistance value is timing, the type of the bus cyclization be one section of bus positive bus-bar to two-stage nitration bus just
Bus cyclization；
When the resistance value for it is negative when, the type of the bus cyclization is that the negative busbar of one section of bus is born to two-stage nitration bus
Bus cyclization.
In the present embodiment, the voltage-to-ground first by obtaining judges the type of bus cyclization, when can not judge bus
During the type of cyclization, change the mode for obtaining voltage-to-ground, then according to the resistance value of the voltage-to-ground and balanced bridge for obtaining
The resistance value of bus cyclization is calculated, according to the positive and negative type that can judge bus cyclization of resistance value, determination methods are simple,
The type of bus cyclization can be detected in real time, it is to avoid the adverse effect that bus cyclization is caused to whole electric power system.
Embodiment two
Fig. 3 is refer to, embodiments of the invention two are a concrete application scene of embodiment one.Fig. 3 is that one section of bus connects
The schematic diagram of the first balanced bridge and the second balanced bridge is connect, two-stage nitration bus connects the 3rd balanced bridge and the 4th balanced bridge can
With reference to Fig. 3.
In the present embodiment, it is assumed that R1=R2=R5=R6=220k Ω, R3=R4=R7=R8=30k Ω, K1, K2, K3
It is switch with K4, wherein, the 3rd balanced bridge and the 4th balanced bridge relevant position also are provided with K1, K2, K3 and K4.
Judge process is：
One section of bus closes K1, K2, and two-stage nitration bus closure K3, K4 obtain the electricity over the ground of the now positive bus-bar of one section of bus
Pressure V1+, the voltage-to-ground V of the negative busbar of one section of bus1-, the voltage-to-ground V of the positive bus-bar of two-stage nitration bus2+, two-stage nitration bus it is negative
The voltage-to-ground V of bus2-。
K1, K2 of one section of bus are disconnected, K3, K4 is closed, K3, K4 of two-stage nitration bus are disconnected, close K1, K2, obtained
The now voltage-to-ground V of the positive bus-bar of one section of bus1x+, the voltage-to-ground V of the negative busbar of one section of bus1x-, two-stage nitration bus is just
The voltage-to-ground V of bus2x+, the voltage-to-ground V of the negative busbar of two-stage nitration bus2x-。
When the electric pressure of DC power-supply system is 110V, it is assumed that V1+=52V, V1-=40V, V2+=50V, V2-=
42V, V1x+=55V, V1x-=42V, V2x+=55V, V2x-=48V.
abs(V1+-V1-)=12V, abs (V2x+-V2x-)=7V, now abs (V1+-V1-) ＞ abs (V2x+-V2x-), so female
The type of line cyclization is the negative busbar cyclization of the positive bus-bar to two-stage nitration bus of one section of bus, according to formulaTo calculate the resistance value of bus cyclization, RCyclization=173k
Ω, illustrates that now cyclization situation is not serious.
If being abs (V according to the result that voltage-to-ground judges1x+-V1x-) ＜ abs (V2+-V2-) when, then the bus cyclization
Type be one section of bus positive bus-bar cyclization of the negative busbar to two-stage nitration bus.
If above two result is not, then carry out following judge process：
One section of bus closes K1, K2, K3, two-stage nitration bus closure K1, K2, K4, obtains the now positive bus-bar of one section of bus
Voltage-to-ground V11+, the voltage-to-ground V of the negative busbar of one section of bus11-, the voltage-to-ground V of the positive bus-bar of one section of bus22+, two-stage nitration
The voltage-to-ground V of the negative busbar of bus22-。
Then one section of bus disconnects K1, K2, K3, closes K4；Two-stage nitration bus disconnects K1, K2, K4, closes K3, obtains now
The voltage-to-ground V of the positive bus-bar of one section of bus11x+, the voltage-to-ground V of the negative busbar of one section of bus11x-, the positive bus-bar of two-stage nitration bus
Voltage-to-ground V22x+, the voltage-to-ground V of the negative busbar of two-stage nitration bus22x-, the electricity of bus cyclization is then calculated by equation below
Resistance：
When the resistance value be timing, then the type of the bus cyclization be the bus cyclization type be one section of bus
Positive bus-bar cyclization of the positive bus-bar to two-stage nitration bus；When the resistance value is to bear, the type of the bus cyclization is one section of mother
Negative busbar cyclization of the negative busbar of line to two-stage nitration bus.
Embodiment three
Fig. 5 is refer to, embodiments of the invention three are corresponding with the method for above-described embodiment, be that a kind of direct current supply bus is closed
The automatic checkout system of ring, including：
First link block 1, for the first balanced bridge and the second balanced bridge to be respectively connecting to into one section of bus just
Between bus and negative busbar, and first balanced bridge and the second balanced bridge are grounded.
Second link block 2, for the 3rd balanced bridge and the 4th balanced bridge to be respectively connecting to into two-stage nitration bus just
Between bus and negative busbar, and the 3rd balanced bridge and the 4th balanced bridge are grounded.
In the present embodiment, first balanced bridge includes resistance R1 and R2, and second balanced bridge includes resistance R3
And R4, the 3rd balanced bridge include resistance R5 and R6, the 4th balanced bridge include resistance R7 and R8.
First acquisition module 3, for obtaining the positive bus-bar of one section of bus and the voltage-to-ground of negative busbar and two-stage nitration respectively
The positive bus-bar of bus and the voltage-to-ground of negative busbar.
First acquisition module 3 specifically for：
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead, obtain described
The voltage-to-ground V of the positive bus-bar of one section of bus1+；
The first end of R2 is connected with the negative busbar of one section of bus, second end of R2 is connected with earth lead, obtain described
The voltage-to-ground V of the negative busbar of one section of bus1-；
The first end of R7 is connected with the positive bus-bar of two-stage nitration bus, second end of R7 is connected with earth lead, obtain described
The voltage-to-ground V of the positive bus-bar of two-stage nitration bus2+；
The first end of R8 is connected with the negative busbar of two-stage nitration bus, second end of R8 is connected with earth lead, obtain described
The voltage-to-ground V of the negative busbar of two-stage nitration bus2-；
The positive bus-bar of R1 and one section of bus or the connection with earth lead are disconnected, by the first end of R3 and one section of bus just
Bus connects, and second end of R3 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of one section of bus1x+；
The negative busbar of R2 and one section of bus or the connection with earth lead are disconnected, by bearing for the first end of R4 and one section of bus
Bus connects, and second end of R4 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of one section of bus1x-；
Positive bus-bars of the R7 with two-stage nitration bus or the connection with earth lead are disconnected, by the first end of R5 and two-stage nitration bus just
Bus connects, and second end of R7 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of the two-stage nitration bus2x+；
Negative busbars of the R8 with two-stage nitration bus or the connection with earth lead are disconnected, the first end of R6 is negative with two-stage nitration bus
Bus connects, and second end of R8 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of the two-stage nitration bus2x-。
First judge module 4, for the type for judging bus cyclization according to the voltage-to-ground for obtaining.
First judge module 4 specifically for：
As abs (V1+-V1-) ＞ abs (V2x+-V2x-) when, the type of the bus cyclization is the positive bus-bar pair of one section of bus
The negative busbar cyclization of two-stage nitration bus；
As abs (V1x+-V1x-) ＜ abs (V2+-V2-) when, the type of the bus cyclization is the negative busbar pair of one section of bus
The positive bus-bar cyclization of two-stage nitration bus.
Also include the first computing module 5, be used for：
When negative busbar cyclization of the positive bus-bar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to obtaining
The V for taking1+、V1-、V1x+、V1x-And the resistance value of R1, R2, R3 and R4 calculates the resistance value of bus cyclization；
When positive bus-bar cyclization of the negative busbar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to obtaining
The V for taking2+、V2-、V2x+、V2x-And the resistance value of R5, R6, R7 and R8 calculates the resistance value of bus cyclization.
In the present embodiment, also include：
Second computing module 6, if for can not according to obtain voltage-to-ground judge the type of bus cyclization when, basis
The resistance of the resistance in the first balanced bridge, the second balanced bridge, the 3rd balanced bridge and the 4th balanced bridge and acquisition
Voltage-to-ground, calculates the resistance value of bus cyclization；
Second judge module 7, for judging the type of bus cyclization according to the resistance value of the bus cyclization.
Second acquisition module 8, is used for：
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead；By the of R2
One end is connected with the negative busbar of one section of bus, and second end of R2 is connected with earth lead；By the first end of R3 and one section of bus
Positive bus-bar connects, and second end of R3 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11+With one section of mother
The voltage-to-ground V of the negative busbar of line11-；
The first end of R5 is connected with the positive bus-bar of two-stage nitration bus, second end of R5 is connected with earth lead；By the of R6
The negative busbar connection of the two-stage nitration bus of one end one, second end of R6 is connected with earth lead；By the first end of R8 and two-stage nitration bus
Negative busbar connects, and second end of R8 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22+It is female with two-stage nitration
The voltage-to-ground V of the negative busbar of line22-；
Positive bus-bar or the connection with earth lead of R1, R3 and one section of bus are disconnected, R2 and one section of bus negative busbar is disconnected
Or the connection with earth lead, the first end of R4 is connected with the negative busbar of one section of bus, second end of R4 and earth lead are connected
Connect；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11x+With the voltage-to-ground V of the negative busbar of one section of bus11x-；
The first end of R5 and the positive bus-bar of two-stage nitration bus or the connection with earth lead are disconnected, R6, R8 is disconnected and two-stage nitration is female
The negative busbar of line or the connection with earth lead, the first end of R7 is connected with the positive bus-bar of two-stage nitration bus, by second end of R7
It is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22x+The voltage-to-ground V of the negative busbar of two-stage nitration bus22x-。
Second computing module 6 specifically for：According to V11+、V11-、V22+、V22-、V11x+、V11x-、V22x+、V22x-And
The resistance value of the computing the resistor value bus cyclization of R1, R2, R3, R4, R5, R6, R7 and R8；
Second judge module 7 specifically for：When the resistance value is timing, the type of the bus cyclization is one section
Positive bus-bar cyclization of the positive bus-bar of bus to two-stage nitration bus；When the resistance value is to bear, the type of the bus cyclization is one
Negative busbar cyclization of the negative busbar of section bus to two-stage nitration bus.
In sum, the automatic testing method and its system of the direct current supply bus cyclization that the present invention is provided, can be real-time
Bus cyclization is detected, judge the type of bus cyclization, and the resistance value of calculating bus cyclization, detection method simply may be used
Lean on, be conducive to solving the harm that bus cyclization is caused to electric power system in time, improve power supply safety performance.
Embodiments of the invention are the foregoing is only, the scope of the claims of the present invention is not thereby limited, it is every using this
The equivalents that bright description and accompanying drawing content are made, or the technical field of correlation is directly or indirectly used in, include in the same manner
In the scope of patent protection of the present invention.
Claims (10)
1. a kind of automatic testing method of direct current supply bus cyclization, it is characterised in that include：
First balanced bridge and the second balanced bridge are respectively connecting between the positive bus-bar of one section of bus and negative busbar, and by institute
State the first balanced bridge and the second balanced bridge is grounded；
3rd balanced bridge and the 4th balanced bridge are respectively connecting between the positive bus-bar of two-stage nitration bus and negative busbar, and by institute
State the 3rd balanced bridge and the 4th balanced bridge is grounded；
Respectively obtain the positive bus-bar and the voltage-to-ground of negative busbar and the positive bus-bar of two-stage nitration bus and negative busbar of one section of bus
Voltage-to-ground；
Voltage-to-ground according to obtaining judges the type of bus cyclization.
2. the automatic testing method of direct current supply bus cyclization according to claim 1, it is characterised in that described first is flat
Weighing apparatus electric bridge includes resistance R1 and R2, and second balanced bridge includes resistance R3 and R4, and the 3rd balanced bridge includes resistance
R5 and R6, the 4th balanced bridge includes resistance R7 and R8.
3. the automatic testing method of direct current supply bus cyclization according to claim 2, it is characterised in that it is described " respectively
Obtain the positive bus-bar and the voltage-to-ground of negative busbar and the positive bus-bar of two-stage nitration bus of one section of bus and the electricity over the ground of negative busbar
Pressure " is specifically included：
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead, obtained described one section
The voltage-to-ground V of the positive bus-bar of bus1+；
The first end of R2 is connected with the negative busbar of one section of bus, second end of R2 is connected with earth lead, obtained described one section
The voltage-to-ground V of the negative busbar of bus1-；
The first end of R7 is connected with the positive bus-bar of two-stage nitration bus, second end of R7 is connected with earth lead, obtain the two-stage nitration
The voltage-to-ground V of the positive bus-bar of bus2+；
The first end of R8 is connected with the negative busbar of two-stage nitration bus, second end of R8 is connected with earth lead, obtain the two-stage nitration
The voltage-to-ground V of the negative busbar of bus2-；
The positive bus-bar of R1 and one section of bus or the connection with earth lead are disconnected, by the first end of R3 and the positive bus-bar of one section of bus
Connection, second end of R3 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of one section of bus1x+；
The negative busbar of R2 and one section of bus or the connection with earth lead are disconnected, by the first end of R4 and the negative busbar of one section of bus
Connection, second end of R4 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of one section of bus1x-；
Positive bus-bars of the R7 with two-stage nitration bus or the connection with earth lead are disconnected, by the first end of R5 and the positive bus-bar of two-stage nitration bus
Connection, second end of R7 is connected with earth lead, obtains the voltage-to-ground V of the positive bus-bar of the two-stage nitration bus2x+；
Negative busbars of the R8 with two-stage nitration bus or the connection with earth lead are disconnected, by the first end of R6 and the negative busbar of two-stage nitration bus
Connection, second end of R8 is connected with earth lead, obtains the voltage-to-ground V of the negative busbar of the two-stage nitration bus2x-。
4. the automatic testing method of direct current supply bus cyclization according to claim 3, it is characterised in that
As abs (V1+-V1-) ＞ abs (V2x+-V2x-) when, the type of the bus cyclization is that the positive bus-bar of one section of bus is female to two-stage nitration
The negative busbar cyclization of line；
As abs (V1x+-V1x-) ＜ abs (V2+-V2-) when, the type of the bus cyclization is that the negative busbar of one section of bus is female to two-stage nitration
The positive bus-bar cyclization of line.
5. the automatic testing method of direct current supply bus cyclization according to claim 4, it is characterised in that
When negative busbar cyclization of the positive bus-bar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to what is obtained
V1+、V1-、V1x+、V1x-And the resistance value of R1, R2, R3 and R4 calculates the resistance value of bus cyclization；
When positive bus-bar cyclization of the negative busbar that the type of the bus cyclization is one section of bus to two-stage nitration bus, according to what is obtained
V2+、V2-、V2x+、V2x-And the resistance value of R5, R6, R7 and R8 calculates the resistance value of bus cyclization.
6. the automatic testing method of direct current supply bus cyclization according to claim 4, it is characterised in that
If the type of bus cyclization can not be judged according to the voltage-to-ground for obtaining, according to the first balanced bridge, the second balance
The resistance and the voltage-to-ground of acquisition of the resistance in electric bridge, the 3rd balanced bridge and the 4th balanced bridge, calculates bus cyclization
Resistance value；
The type of bus cyclization is judged according to the resistance value of the bus cyclization.
7. the automatic testing method of direct current supply bus cyclization according to claim 6, it is characterised in that
The first end of R1 is connected with the positive bus-bar of one section of bus, second end of R1 is connected with earth lead；By the first end of R2
It is connected with the negative busbar of one section of bus, second end of R2 is connected with earth lead；By the first end of R3 and the positive pole of one section of bus
Line connects, and second end of R3 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of one section of bus11+With one section of bus
The voltage-to-ground V of negative busbar11-；
The first end of R5 is connected with the positive bus-bar of two-stage nitration bus, second end of R5 is connected with earth lead；By the first end of R6
The negative busbar connection of one two-stage nitration bus, second end of R6 is connected with earth lead；By the first end of R8 and the negative mother of two-stage nitration bus
Line connects, and second end of R8 is connected with earth lead；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22+With two-stage nitration bus
The voltage-to-ground V of negative busbar22-；
Disconnect positive bus-bar or the connection with earth lead of R1, R3 and one section of bus, R2 and one section of bus negative busbar of disconnection or
With the connection of earth lead, the first end of R4 is connected with the negative busbar of one section of bus, second end of R4 is connected with earth lead；Obtain
Take the voltage-to-ground V of the positive bus-bar of one section of bus11x+With the voltage-to-ground V of the negative busbar of one section of bus11x-；
Positive bus-bar or connection with earth lead of the first end of disconnection R5 with two-stage nitration bus, disconnection R6, R8 and two-stage nitration bus
Negative busbar or the connection with earth lead, the first end of R7 is connected with the positive bus-bar of two-stage nitration bus, by second end of R7 with connect
Ground wire connects；Obtain the voltage-to-ground V of the positive bus-bar of two-stage nitration bus22x+With the voltage-to-ground V of the negative busbar of two-stage nitration bus22x-。
8. the automatic testing method of direct current supply bus cyclization according to claim 7, it is characterised in that
According to V11+、V 11-、V22+、V22-、V11x+、V11x-、V22x+、V22x-And the resistance of R1, R2, R3, R4, R5, R6, R7 and R8
Calculate the resistance value of bus cyclization；
When the resistance value is timing, the type of the bus cyclization is positive bus-bar of the positive bus-bar of one section of bus to two-stage nitration bus
Cyclization；
When the resistance value is to bear, the type of the bus cyclization is negative busbar of the negative busbar of one section of bus to two-stage nitration bus
Cyclization.
9. a kind of automatic checkout system of direct current supply bus cyclization, it is characterised in that include：
First link block, for the first balanced bridge and the second balanced bridge are respectively connecting to one section of bus positive bus-bar and
Between negative busbar, and first balanced bridge and the second balanced bridge are grounded；
Second link block, for the 3rd balanced bridge and the 4th balanced bridge are respectively connecting to two-stage nitration bus positive bus-bar and
Between negative busbar, and the 3rd balanced bridge and the 4th balanced bridge are grounded；
First acquisition module, for obtaining the positive bus-bar of one section of bus and the voltage-to-ground of negative busbar and two-stage nitration bus respectively
Positive bus-bar and negative busbar voltage-to-ground；
First judge module, for the type for judging bus cyclization according to the voltage-to-ground for obtaining.
10. the automatic checkout system of direct current supply bus cyclization according to claim 9, it is characterised in that described first
Balanced bridge includes resistance R1 and R2, and second balanced bridge includes resistance R3 and R4, and the 3rd balanced bridge includes electricity
Resistance R5 and R6, the 4th balanced bridge includes resistance R7 and R8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710111187.6A CN106646141B (en) | 2017-02-28 | 2017-02-28 | The automatic testing method and its system of direct current supply bus cyclization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710111187.6A CN106646141B (en) | 2017-02-28 | 2017-02-28 | The automatic testing method and its system of direct current supply bus cyclization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106646141A true CN106646141A (en) | 2017-05-10 |
| CN106646141B CN106646141B (en) | 2019-03-01 |
Family
ID=58846450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710111187.6A Active CN106646141B (en) | 2017-02-28 | 2017-02-28 | The automatic testing method and its system of direct current supply bus cyclization |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106646141B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221130A (en) * | 2019-04-22 | 2019-09-10 | 贵州电网有限责任公司 | A kind of capacitance type potential transformer measurement structure and measurement method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043114A (en) * | 2010-10-22 | 2011-05-04 | 甘肃省电力公司金昌供电公司 | Electrification loop-breaking method for direct current power supply and special device thereof |
| CN102590676A (en) * | 2012-02-28 | 2012-07-18 | 北京人民电器厂有限公司 | Device and method for detecting fault of direct current looped network of direct current power supply system |
| CN202583341U (en) * | 2012-02-28 | 2012-12-05 | 北京人民电器厂有限公司 | Device capable of detecting dc looped-network failures of dc power supply systems |
| CN203117354U (en) * | 2013-04-02 | 2013-08-07 | 珠海瓦特电力设备有限公司 | Looped network detecting device for direct-current system |
| CN203929904U (en) * | 2013-11-15 | 2014-11-05 | 广州优维电子科技有限公司 | The charged solution loop device of a kind of straight-flow system |
| CN107091969A (en) * | 2017-05-15 | 2017-08-25 | 广东电网有限责任公司惠州供电局 | A kind of looped network of DC power intelligent detection device and method |
-
2017
- 2017-02-28 CN CN201710111187.6A patent/CN106646141B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043114A (en) * | 2010-10-22 | 2011-05-04 | 甘肃省电力公司金昌供电公司 | Electrification loop-breaking method for direct current power supply and special device thereof |
| CN102590676A (en) * | 2012-02-28 | 2012-07-18 | 北京人民电器厂有限公司 | Device and method for detecting fault of direct current looped network of direct current power supply system |
| CN202583341U (en) * | 2012-02-28 | 2012-12-05 | 北京人民电器厂有限公司 | Device capable of detecting dc looped-network failures of dc power supply systems |
| CN203117354U (en) * | 2013-04-02 | 2013-08-07 | 珠海瓦特电力设备有限公司 | Looped network detecting device for direct-current system |
| CN203929904U (en) * | 2013-11-15 | 2014-11-05 | 广州优维电子科技有限公司 | The charged solution loop device of a kind of straight-flow system |
| CN107091969A (en) * | 2017-05-15 | 2017-08-25 | 广东电网有限责任公司惠州供电局 | A kind of looped network of DC power intelligent detection device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110221130A (en) * | 2019-04-22 | 2019-09-10 | 贵州电网有限责任公司 | A kind of capacitance type potential transformer measurement structure and measurement method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106646141B (en) | 2019-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104391241B (en) | A kind of electrokinetic cell high-voltage relay state detection circuit and its method | |
| CN104620117B (en) | Power supply apparatus | |
| CN104049150B (en) | Photovoltaic module insulation against ground detection means and method and grid-connected photovoltaic system | |
| US20120026631A1 (en) | Photovoltaic array ground fault detection in an ungrounded solar electric power generating system and techniques to transition onto and off the utility grid | |
| CN112636694B (en) | Photovoltaic power generation system and method | |
| CN107091969B (en) | Intelligent detection device and method for direct current looped network | |
| CN107957546A (en) | A kind of detection method and equipment of grid-connected inverters AC relay | |
| CN104979894A (en) | RMU uninterrupted power supply load transfer method | |
| CN104007396B (en) | Device and method for searching for loop channeling electric fault in direct current systems | |
| CN104330687A (en) | Method and device for detecting electricity leakage fault of power supply system | |
| CN106353646B (en) | A kind of Insulation monitoring control method based on high voltage direct current power supply system | |
| CN204374332U (en) | A kind of system detecting DC bus and alter mutually | |
| CN103675606B (en) | Bridge-type DC Line Fault monitoring alarm | |
| CN105244853B (en) | A kind of transforming plant DC power-supply system for possessing ground connection inspection route selection Checking Mechanism | |
| CN106405305A (en) | Zero line open-phase detection circuit and method for detecting open phase of zero line | |
| CN106646141A (en) | Automatic detection method and system for direct current power supply bus loop closing | |
| CN105372478B (en) | Distribution line transient state checking for grounded current method and device | |
| CN105242171B (en) | A kind of transforming plant DC ground connection inspection device for possessing route selection Checking Mechanism | |
| CN105914737A (en) | Power distribution cabinet and method and device of controlling power distribution cabinet to execute loop closing operation | |
| CN207457417U (en) | A kind of Simple Substation dc bus insulation monitoring device | |
| CN107271851B (en) | A kind of wide area backup protection method based on differential active power | |
| CN206293878U (en) | A kind of action protecting device of Intelligent Measurement residual current | |
| CN104104330A (en) | Insulation detection system and insulation detection method for photovoltaic energy storage system | |
| CN202870174U (en) | Low energy consumption circuit for detecting insulating resistance of DC bus | |
| CN209014655U (en) | Insulation detecting circuit and charging pile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |