CN107196366A - A kind of accumulator on-line maintenance system based on three port charge-discharge machines - Google Patents
A kind of accumulator on-line maintenance system based on three port charge-discharge machines Download PDFInfo
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- CN107196366A CN107196366A CN201710424474.2A CN201710424474A CN107196366A CN 107196366 A CN107196366 A CN 107196366A CN 201710424474 A CN201710424474 A CN 201710424474A CN 107196366 A CN107196366 A CN 107196366A
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- 238000012423 maintenance Methods 0.000 title claims abstract description 89
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- H02J7/0022—
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention relates to the accumulator on-line maintenance system based on three port charge-discharge machines, including：First battery data logging device, is connected with the first batteries, and the second battery data logging device is connected with the second batteries, and AC network provides alternating current for DC power system；Three port charge-discharge machines, it is connected respectively with the first batteries, the second batteries and AC network, condition is provided for the on-line maintenance of the first batteries or the second batteries, and the discharge capacity of the first batteries or the second batteries is exported to AC network；System monitor, when the first batteries or the second batteries meet on-line maintenance condition, safeguards that control instruction starts three port charge-discharge machines and carries out on-line maintenance to the first batteries or the second batteries according to preset rules output.This programme simple and reliable automatically can carry out on-line maintenance to battery, and cost is low, flexible and efficient.
Description
Technical field
It is online more specifically to a kind of battery based on three port charge-discharge machines the present invention relates to power domain
Maintenance system.
Background technology
With the development and the raising of application request of science and technology, the reliability requirement of power system is also constantly being carried
Height, wherein it is essential as the batteries of energy storage device, cause exchange when accident occurs in the Alternating Current Power Supply end of power system
During power-off, batteries will serve as power take-off, it is ensured that electrical equipment normal work on dc bus, it is to avoid cause the accident shadow
Loud extension.Therefore, the reliability service of batteries is one of important leverage of Power System Reliability operation.In view of electric power storage
The importance of pond group, in order to ensure that batteries can be run, it is necessary to periodically be safeguarded to batteries reliably and with long-term.
The conventional storage battery system connected mode such as Fig. 1 of DC power system, 2 groups of system configuration in current power system
Battery, is divided into two sections of dc bus, standby each other by switching K0.Conventional batteries maintaining method is periodically to make at present
Discharged with battery discharging instrument, in discharge process, by the capacity of battery data logging device calculating accumulator group and according to each single-unit
The uniformity of battery terminal voltage judges the quality of batteries.This maintaining method is usually to use maintenance off-line mode, in dimension
Closure switch K0 first during shield, is then turned off being maintained the output switch (K1 or K2) of batteries, and closure is maintained battery
The discharge switch (K3 or K4) of group.In the DC power system of power system, remote control switch is not allowed typically, therefore,
Operations of these switches need special maintenance personnel on site manually operated, need professional operator whole in maintenance process with
Track, and safeguard that the time once is about 10~20 hours per group storage battery, the batteries substantial amounts used in power system,
Therefore substantial amounts of professional operator is needed, human cost is very high.
The content of the invention
The technical problem to be solved in the present invention is, the drawbacks described above for prior art there is provided one kind is based on three ports
The accumulator on-line maintenance system of charge-discharge machine.
The technical solution adopted for the present invention to solve the technical problems is：A kind of storage based on three port charge-discharge machines of construction
Battery on-line maintenance system, for safeguarding the battery in DC power system, wherein, DC power system includes the first electric power storage
Pond group and the second batteries, the on-line maintenance system include：
First battery data logging device, is connected with first batteries, and the residue of first batteries is calculated in real time
The battery information of electricity, detection first batteries, exports the first testing result；First testing result includes：Institute
State the dump energy and detection information of the first batteries；
Second battery data logging device, is connected with second batteries, and the residue of second batteries is calculated in real time
The battery information of electricity, detection second batteries, exports the second testing result；Second testing result includes：Institute
State the dump energy and detection information of the second batteries；
AC network, alternating current is provided for the DC power system；
Three port charge-discharge machines, connect with first batteries, the second batteries and the AC network respectively
Connect, condition provided for the on-line maintenance of first batteries or the second batteries, and by first batteries or
The discharge capacity of second batteries is exported to the AC network；
System monitor, when first batteries or the second batteries meet on-line maintenance condition, according to pre-
If rule output safeguards that control instruction starts three port charge-discharge machine so that first batteries or second storage
Battery pack is discharged to the AC network, while handling first testing result or the second testing result.
In the accumulator on-line maintenance system of the present invention based on three port charge-discharge machines, it is preferable that it is described
Line maintenance system also includes：
The first dc bus being connected with first batteries；
The second dc bus being connected with second batteries；
It is provided with bus connection switch between first dc bus and the second dc bus, bus connection switch control described the
The connection or disconnection of one dc bus and the second dc bus.
In the accumulator on-line maintenance system of the present invention based on three port charge-discharge machines, it is preferable that described three
Port charge-discharge machine is provided with the first DC port, the second DC port and AC port；
First DC port is connected with first dc bus, second DC port and second direct current
Bus is connected, and the AC port connects the AC network, and first DC port, the second DC port and exchange
Port is the convertible port of working condition.
In the accumulator on-line maintenance system of the present invention based on three port charge-discharge machines, it is preferable that described three
Isolating transformer is provided with the charge-discharge machine of port, for realizing first DC port, the second DC port and exchange end
It is mutually isolated between mouthful.
In the accumulator on-line maintenance system of the present invention based on three port charge-discharge machines, it is preferable that it is described
Line maintenance system also includes：
First charger, is connected with first dc bus, AC network respectively, is carried out in first batteries
When electric discharge is safeguarded, receive the system monitor safeguards that control instruction makes the output voltage of itself be less than first battery
The terminal voltage of group.
In the accumulator on-line maintenance system of the present invention based on three port charge-discharge machines, it is preferable that it is described
Line maintenance system also includes：
Second charger, is connected with second dc bus, AC network respectively, is carried out in second batteries
When electric discharge is safeguarded, receive the system monitor safeguards that control instruction makes the output voltage of itself be less than second battery
The terminal voltage of group.
In the accumulator on-line maintenance system of the present invention based on three port charge-discharge machines, it is preferable that it is described
Line maintenance system also includes：
First switch, is arranged between first dc bus and first batteries, and control described first is straight
Flow the connection or disconnection of bus and the first batteries；
Second switch, is arranged between second dc bus and second batteries, and control described second is straight
Flow the connection or disconnection of bus and the second batteries.
In the accumulator on-line maintenance system of the present invention based on three port charge-discharge machines, it is preferable that it is described
Line maintenance system also includes：
3rd switch, is arranged between the first DC port of three port charge-discharge machine and the first dc bus；
4th switch, is arranged between the second DC port of three port charge-discharge machine and the second dc bus.
In the accumulator on-line maintenance system of the present invention based on three port charge-discharge machines, it is preferable that it is described
Line maintenance system also includes：
5th switch, is arranged between first charger and the first dc bus, control first charger with
Connection or disconnection between first dc bus；
6th switch, is arranged between second charger and the second dc bus, control second charger with
Connection or disconnection between second dc bus.
The present invention also provides a kind of accumulator on-line maintenance system based on three port charge-discharge machines, including host computer, with
And the on-line maintenance system described in any of the above-described, the host computer pass through the system monitor realize with the on-line maintenance
The data communication of system.
Implement the accumulator on-line maintenance system based on three port charge-discharge machines of the present invention, have the advantages that：
Technical solution of the present invention can realize the on-line maintenance to battery on the premise of not influenceing DC power system normally to run,
It can safeguard and terminate according to preset rules automatic start and safeguard, safeguard whole-process automatic complete, it is not necessary to which professional operator participates in,
And control mode simple and flexible, when charger in systems is abnormal, three port charge-discharge machines substitute the charger of failure automatically,
Substantially increase the reliability and stability of DC power system.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the conventional batteries connection diagram of DC power system in existing power system；
Fig. 2 is the structural representation of accumulator on-line maintenance system one embodiment of the invention based on three port charge-discharge machines
Figure；
Fig. 3 is the structural representation of accumulator on-line maintenance system another embodiment of the invention based on three port charge-discharge machines
Figure.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to realize the present invention, and
It is not used in the restriction present invention.
The problem of existing for prior art, it is online that the present invention proposes a kind of battery based on three port charge-discharge machines
Maintenance system, the accumulator on-line maintenance system realizes that the automatic on-line of the maintenance system is safeguarded using system monitor, system
Three port charge-discharge machines are configured, start three port charge-discharge machines when carrying out battery service to provide bar to the maintenance of battery
Part, while the charger of failure can also be substituted by three port charge-discharge machines, greatly automatically when the charger of system breaks down
The big reliability and stability for improving DC power system.
Fig. 2 shows the knot of the accumulator on-line maintenance system provided in an embodiment of the present invention based on three port charge-discharge machines
Structure schematic diagram, for convenience of description, illustrate only the part related to the embodiment of the present invention.
The accumulator on-line maintenance system based on three port charge-discharge machines of the present embodiment can be used for safeguarding dc source system
Battery in system, wherein, two group storage batteries are configured in general DC power system, as shown in Fig. 2 respectively the first electric power storage
The batteries 14 of pond group 13 and second, while configuring 2 sections of dc bus, respectively the first dc bus 11 and the second dc bus
12.Specifically, the accumulator on-line maintenance system based on three port charge-discharge machines 30 of the present embodiment includes：First battery is patrolled
Examine instrument 15, the second battery data logging device 16, AC network 20, three port charge-discharge machines 30 and system monitor 40；Also include the
One charger 17 and the second charger 18, wherein,
First battery data logging device 15, is connected with the first batteries 13, and the residue electricity of the first batteries 13 is calculated in real time
The battery information of the first batteries 13 of amount and detection, and export the first testing result；First testing result includes first and stored
The dump energy and detection information of battery pack 13.
It is to be appreciated that being stored by the real-time detection of 15 pair of first batteries 13 of the first battery data logging device, and first
When battery pack 13 is discharged, each single-unit in the dump energy of the first batteries 13, the first batteries 13 of detection can be calculated in real time
The voltage of battery, and in real time upload the information of voltage of each single battery in the dump energy calculated and the first batteries 13
To system monitor 40, single battery abnormal in the first batteries 13 not only can effectively, be reliably detected, and can be real
When grasp the situation of its storing electricity.
Second battery data logging device 16, is connected with the second batteries 14, and the residue electricity of the second batteries 14 is calculated in real time
The battery information of the second batteries 14 of amount and detection, exports the second testing result；Second testing result includes the second electric power storage
The dump energy and detection information of pond group 14.
It is to be appreciated that being stored by the real-time detection of 16 pair of second batteries 14 of the second battery data logging device, and second
When battery pack 14 is discharged, each single-unit in the dump energy of the second batteries 14, the second batteries 14 of detection can be calculated in real time
The voltage of battery, and in real time upload the information of voltage of each single battery in the dump energy calculated and the second batteries 14
To system monitor 40, single battery abnormal in the second batteries 14 not only can effectively, be reliably detected, and can be real
When grasp the situation of its storing electricity.
AC network 20, is connected with three port charge-discharge machines 30, provides alternating current for DC power system, and store first
The batteries 14 of battery pack 13 or second electric discharge maintenance process in, by three port charge-discharge machines 30 make the first batteries 13 or
Second batteries 14 are discharged to AC network 20.
Three port charge-discharge machines 30, respectively with the first batteries 13, the second batteries 14, system monitor 40, with
And AC network 20 is connected.Preferably, in the present embodiment, three port charge-discharge machines 30 are provided with three ports, respectively first
DC port A, the second DC port B and AC port C, and three ports are the convertible port of working condition.Direct current
When power-supply system is normally run, three port charge-discharge machines 30 are in stand-by state.
Wherein, the first DC port A is connected with the first dc bus 11, realizes that three ports are filled by the first dc bus 11
The connection of the batteries 13 of Electrical Discharge Machine 30 and first.Second DC port B is connected with the second dc bus 12, passes through the second direct current
Bus 12 realizes the connection of three port charge-discharge machines 30 and the second batteries 14.AC port C is connected with AC network 20, is led to
Cross the connection that AC port C realizes three port charge-discharge machines 30 and AC network 20.Further, three port charge-discharge machines 30 can
Communicated with system monitor 40, communication between the two can be realized using RS485 or CAN.
The inside of three port charge-discharge machine 30 of the present embodiment is provided with isolating transformer, and three are realized by the isolating transformer
It is mutually isolated between port.
It should be noted that when DC power system is normally run, three port charge-discharge machines 30 are in stand-by state, this
When, the first DC port A and the second DC port B are all set to input port, and AC port C is then arranged to latch like
State, if when the first charger 17 or the second 18 failure of charger, three port charge-discharge machines 30, which can be automatically engaged, substitutes the of failure
One charger 17 or the second charger 18 work (now, AC port C is arranged to input port, the first DC port A or
Second DC port B is arranged to output port)；When the first batteries 13, which need to carry out electric discharge, to be safeguarded, the first DC port A
It is arranged to input port, the second DC port B is arranged to blocking, and AC port C is arranged to output port.Instead
It, when the second batteries 14, which need to carry out electric discharge, to be safeguarded, the first DC port A is arranged to blocking, the second DC terminal
Mouth B is arranged to input port, and AC port C is arranged to output port.
First charger 17, is connected with the first dc bus 11, AC network 20 respectively.Normally transported in DC power system
During row, it is load supplying on the first dc bus 11 and is that the first batteries 13 supplement electricity, enters in the first batteries 13
When row electric discharge is safeguarded, safeguard that control instruction changes the output voltage of itself and makes it below first according to what system monitor 40 was sent
The terminal voltage of batteries 13, is that offer condition is safeguarded in the electric discharge of the first batteries 13.It is to be appreciated that the first charger 17
It can be made up of electric operation power with high-frequency switching power supply module and machine, its capacity is according to the capacity of the first batteries 13 and the
Load on one dc bus 11 is configured.Usually, when the first charger 17 is that the first batteries 13 charge, exist
Fill and floating charge pattern.In addition, the communication between the first charger 17 and system monitor 40 can be realized by RS485 or CAN.
Second charger 18, is connected with the second dc bus 12, AC network 20 respectively.Normally transported in DC power system
During row, it is load supplying on the second dc bus 12 and is that the second batteries 14 supplement electricity, enters in the second batteries 14
When row electric discharge is safeguarded, safeguard that control instruction changes the output voltage of itself and makes it below second according to what system monitor 40 was sent
The terminal voltage of batteries 14, is that offer condition is safeguarded in the electric discharge of the second batteries 14.It is to be appreciated that the second charger 18
It can be made up of electric operation power with high-frequency switching power supply module and machine, its capacity is according to the capacity of the second batteries 14 and the
Load on two dc bus 12 is configured.Usually, when the second charger 18 is that the second batteries 14 charge, exist
Fill and floating charge pattern.In addition, the communication between the second charger 18 and system monitor 40 can be realized by RS485 or CAN.
System monitor 40, respectively with three port charge-discharge machines 30, the first battery data logging device 15 and the second battery data logging device
16 connections, the first detection knot uploaded for real-time reception and the first battery data logging device 15 of processing or the second battery data logging device 16
Really, the second testing result, and when the first batteries 13 or the second batteries 14 meet maintenance condition, according to preset rules
Output is corresponding to safeguard control instruction, starts three port charge-discharge machines 30, realizes to the first batteries 13 or the second battery
The electric discharge of group 14 is safeguarded.
For example, when the first batteries 13 meet maintenance condition, system monitor 40 is therein according to being set in advance in
Maintenance period, maintenance time send to three port charge-discharge machines 30, the first charger 17 and safeguard control instruction, the first charger 17
Output voltage be adjusted to terminal voltage less than the first batteries 13, safeguard bar be provided for the electric discharge of the first batteries 13
Part, three port charge-discharge machines 30, which are received, to be safeguarded after control instruction, the first DC port A is set into input port, second is straight
Flow port B is set to blocking, and AC port C is set to output port, and three port charge-discharge machines 30 are activated, and pass through three
Port charge-discharge machine 30 makes the first batteries 13 be discharged to AC network 20, when reaching the discharge off condition of setting, is
System monitor 40, which sends corresponding control instruction, makes three port charge-discharge machines 30 be in charged state, with to the first batteries 13
Boost charge；Or system monitor 40 can also control to close three port charge-discharge machines 30, by controlling the first charger 17
For the boost charge of the first batteries 13.
In addition, in the discharge process of the first batteries 13, if finding the abnormal state of the first batteries 13 or alternating current
Source dead electricity, system monitor 40 terminates electric discharge and safeguarded immediately, and automatic by the second electric power storage by the port charge-discharge machine 30 of control three
The electric energy transfer of pond group 14 makes the electric energy of two group storage battery groups keep close to the first batteries 13.
To sum up, the accumulator on-line maintenance system based on three port charge-discharge machines of the embodiment of the present invention can be by being preset in
Batteries on-line maintenance strategy (i.e. foregoing preset rules) in system monitor 40, it is automatic real by system monitor 40
The on-line maintenance of existing batteries, in the maintenance process of whole batteries batteries all without departing from DC power system,
And if AC network 20 has a power failure in discharge process, can be automatically transferred to high-pressure side energy by three port charge-discharge machines 30 low
Pressure side is so that two group storage battery group automatic equalizations, the automatic on-line for realizing batteries is safeguarded.
It should be noted that the first batteries 13 of the invention are with being phase in each comfortable discharge process of the second batteries 14
It is mutually independent, it is independent of each other.Therefore, the present invention can respectively store to the on-line maintenance of batteries according to actual conditions unrestricted choice
The depth of discharge of battery pack itself.
As shown in Fig. 2 the accumulator on-line maintenance system based on three port charge-discharge machines of the present embodiment also includes：
Bus connection switch K0, bus connection switch K0 are arranged between the first dc bus 11 and the second dc bus 12, for controlling
Make connecting or disconnection for the first dc bus 11 and the second dc bus 12.
First switch K1, is arranged between the first dc bus 11 and the first batteries 13, controls the first dc bus
11 and first batteries 13 connection or disconnection.
Second switch K2, is arranged between the second dc bus 12 and the second batteries 14, controls the second dc bus
12 and second batteries 14 connection or disconnection.
3rd switch K3, is arranged between the first DC port A of three port charge-discharge machines 30 and the first dc bus 11；
4th switch K4, is arranged between the second DC port B of three port charge-discharge machines 30 and the second dc bus 12.
5th switch K5, is arranged between the first charger 17 and the first dc bus 11, the charger 17 of control first with
Connection or disconnection between first dc bus 11.
6th switch K6, is arranged between the second charger 18 and the second dc bus 12, the charger 18 of control second with
Connection or disconnection between second dc bus 12.
When system is normally run, first switch K1, second switch K2, the 3rd switch K3, the 4th switch K4, the 5th switch
The switches of K5 and the 6th K6 is in closure state, and bus connection switch K0 is off.When needing to the first batteries 13
Or second batteries 14 carry out electric discharge when safeguarding, first switch K1 and second switch K2 are kept closed, i.e., in battery
In the electric discharge maintenance process of group, batteries are not departed from dc source, realize that really online electric discharge is safeguarded.
Below so that the electric discharges of the first batteries 13 is safeguarded as an example, illustrate shown in Fig. 2 based on three port charge-discharge machines
The control principle of accumulator on-line maintenance system：
Assuming that DC power system is 220VDC systems, the configuration of the first batteries 13 and the second batteries 14 is complete
Unanimously, even charging voltage is 242VDC, and float charge voltage is 230VDC, and the electric discharge of the first batteries 13 and the second batteries 14 is whole
Only voltage is 198VDC；When system monitor 40 detects the terminal voltage drop of the first batteries 13 or the second batteries 14
It is low when arriving 198VDC, that is, the control instruction for terminating to safeguard is sent, putting for the first batteries 13 or the second batteries 14 is terminated
Electricity is safeguarded；Wherein, the terminal voltage of the first batteries 13 or the second batteries 14 is by the first battery data logging device 15, the second battery
The correspondence of logging 16 detects and is uploaded to system monitor 40.
When DC power system is normally run, the first batteries 13 and the second batteries 14 are in floating charge state,
Terminal voltage is 230VDC, and the first DC port A and the second DC port B of three port charge-discharge machines 30 are arranged on input
Port, AC port C is in blocking, i.e., now three port charge-discharge machines 30 are in stand-by state.
When the first batteries 13 meet on-line maintenance condition, system monitor 40 issues the first batteries 13 of maintenance
Instruction, the first charger 17 receives the instruction and itself output voltage is adjusted into final discharging voltage 198VDC, is
The electric discharge of one batteries 13 creates conditions；Three port charge-discharge machines 30 are received after the instruction, and its first DC port A is set
For input port, AC port C is set to output port, and the second DC port B is set to blocking, so far three port charge and discharge
Motor 30 is activated, and the first batteries 13 can be discharged by three port charge-discharge machines 30 to AC network 20.In the first electric power storage
In the discharge process of pond group 13, the first battery data logging device 15 calculates the dump energy of the first batteries 13 and detects that first stores in real time
The voltage of each single battery in battery pack 13, while testing result to be uploaded to system monitor 40, system monitor in real time
40 detection informations that the first battery data logging device 15 of processing is uploaded in real time.
When the terminal voltage for detecting the first batteries 13 is reduced to 198VDC, system monitor 40 sends end and safeguarded
Instruction, now, the first batteries 13 require supplementation with charging, and it is first to store that the first charger 17, which may be selected, in system monitor 40
The boost charge of battery pack 13, it is the boost charge of the first batteries 13 that can also select three port charge-discharge machines 30.
Assuming that system monitor 40 selects three port charge-discharge machines 30 to be the boost charge of the first batteries 13, now, three
The AC port C of port charge-discharge machine 30 is arranged to input port, and the first DC port A is arranged to output port, and
One DC port A output voltage is set to even charging voltage 242VDC, the second DC port B and remains blocking.When the first storage
After battery pack 13 is fully charged, recover normal running status, so far, the maintenance process of the first batteries 13 terminates.
In addition, in the electric discharge maintenance process of the first batteries 13, if find the abnormal state of the first batteries 13 or
AC power dead electricity, system monitor 40 can terminate discharge process immediately and give a warning.Secondly, put in the first batteries 13
In electric process, because its charge capacity decreases, therefore, the automatic electric energy by the second batteries 14 of three port charge-discharge machine 30
The first batteries 13 are transferred to, so that the electric energy of the first batteries 13 and the second batteries 14 keeps close.
As shown in figure 3, present invention also offers a kind of accumulator on-line maintenance system based on three port charge-discharge machines, bag
Include host computer, and the foregoing accumulator on-line maintenance system based on three port charge-discharge machines.Host computer can pass through system monitoring
Device 40 realizes the communication with foregoing on-line maintenance system.
Specifically, host computer can actively send maintenance instruction to system monitor 40, start the maintenance to battery, be
System monitor 40 is received after the maintenance instruction of host computer transmission, that is, is converted to and is safeguarded that control instruction is issued to three ports accordingly
Charge-discharge machine 30, the first charger 17 or the second charger 18, while the storage that host computer also acceptable system monitor 40 is returned
The on-line maintenance information of battery pack.
Above example only technical concepts and features to illustrate the invention, its object is to allow person skilled in the art
Scholar can understand present disclosure and implement accordingly, can not limit the scope of the invention.It is all to be wanted with right of the present invention
The equivalent changes and modifications that scope is done are sought, the covering scope of the claims in the present invention all should be belonged to.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of accumulator on-line maintenance system based on three port charge-discharge machines, for safeguarding the electric power storage in DC power system
Pond, wherein, DC power system includes the first batteries and the second batteries, it is characterised in that the on-line maintenance system
System includes：
First battery data logging device, is connected with first batteries, calculate in real time first batteries dump energy,
The battery information of first batteries is detected, the first testing result is exported；First testing result includes：Described first
The dump energy and detection information of batteries；
Second battery data logging device, is connected with second batteries, calculate in real time second batteries dump energy,
The battery information of second batteries is detected, the second testing result is exported；Second testing result includes：Described second
The dump energy and detection information of batteries；
AC network, alternating current is provided for the DC power system；
Three port charge-discharge machines, are connected with first batteries, the second batteries and the AC network respectively,
Condition is provided for the on-line maintenance of first batteries or the second batteries, and by first batteries or second
The discharge capacity of batteries is exported to the AC network；
System monitor, when first batteries or the second batteries meet on-line maintenance condition, according to default rule
Then output safeguards that control instruction starts three port charge-discharge machine so that first batteries or second battery
Group is discharged to the AC network, while handling first testing result or the second testing result.
2. the accumulator on-line maintenance system according to claim 1 based on three port charge-discharge machines, it is characterised in that institute
Stating on-line maintenance system also includes：
The first dc bus being connected with first batteries；
The second dc bus being connected with second batteries；
Bus connection switch is provided between first dc bus and the second dc bus, the bus connection switch control described first is straight
Flow the connection or disconnection of bus and the second dc bus.
3. the accumulator on-line maintenance system according to claim 2 based on three port charge-discharge machines, it is characterised in that institute
Three port charge-discharge machines are stated provided with the first DC port, the second DC port and AC port；
First DC port is connected with first dc bus, second DC port and second dc bus
Connection, the AC port connects the AC network, and first DC port, the second DC port and AC port
It is the convertible port of working condition.
4. the accumulator on-line maintenance system according to claim 3 based on three port charge-discharge machines, it is characterised in that institute
State and isolating transformer is provided with three port charge-discharge machines, for realizing first DC port, the second DC port, Yi Jijiao
It is mutually isolated between flow port.
5. the accumulator on-line maintenance system according to claim 2 based on three port charge-discharge machines, it is characterised in that institute
Stating on-line maintenance system also includes：
First charger, is connected with first dc bus, AC network respectively, is discharged in first batteries
When safeguarding, receive the system monitor transmission safeguards that control instruction makes the output voltage of itself be less than first battery
The terminal voltage of group.
6. the accumulator on-line maintenance system according to claim 5 based on three port charge-discharge machines, it is characterised in that institute
Stating on-line maintenance system also includes：
Second charger, is connected with second dc bus, AC network respectively, is discharged in second batteries
When safeguarding, receive the system monitor transmission safeguards that control instruction makes the output voltage of itself be less than second battery
The terminal voltage of group.
7. the accumulator on-line maintenance system according to claim 2 based on three port charge-discharge machines, it is characterised in that institute
Stating on-line maintenance system also includes：
First switch, is arranged between first dc bus and first batteries, controls first direct current female
The connection or disconnection of line and the first batteries；
Second switch, is arranged between second dc bus and second batteries, controls second direct current female
The connection or disconnection of line and the second batteries.
8. the accumulator on-line maintenance system according to claim 3 based on three port charge-discharge machines, it is characterised in that institute
Stating on-line maintenance system also includes：
3rd switch, is arranged between the first DC port of three port charge-discharge machine and the first dc bus；
4th switch, is arranged between the second DC port of three port charge-discharge machine and the second dc bus.
9. the accumulator on-line maintenance system according to claim 6 based on three port charge-discharge machines, it is characterised in that institute
Stating on-line maintenance system also includes：
5th switch, is arranged between first charger and the first dc bus, controls first charger and first
Connection or disconnection between dc bus；
6th switch, is arranged between second charger and the second dc bus, controls second charger and second
Connection or disconnection between dc bus.
10. a kind of accumulator on-line maintenance system based on three port charge-discharge machines, it is characterised in that including host computer, and
On-line maintenance system described in any one of claim 1 to 9, the host computer by the system monitor realize with it is described
The data communication of line maintenance system.
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| CN201710424474.2A CN107196366B (en) | 2017-06-07 | 2017-06-07 | Storage battery online maintenance system based on three-port charging and discharging machine |
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| CN108879879A (en) * | 2018-08-10 | 2018-11-23 | 广东电网有限责任公司 | Battery group is discharged maintenance device and method online |
| CN109193048A (en) * | 2018-09-10 | 2019-01-11 | 广东电网有限责任公司 | The method and device of on-line maintenance battery group |
| CN110441709A (en) * | 2019-07-29 | 2019-11-12 | 云南电网有限责任公司红河供电局 | A kind of transforming plant DC power-supply system and monitoring method monitoring battery and charging module |
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| CN107706940A (en) * | 2017-09-30 | 2018-02-16 | 北京空间飞行器总体设计部 | A kind of spacecraft does not adjust the flexible grid-connected system between bus power-supply system |
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| CN109193048A (en) * | 2018-09-10 | 2019-01-11 | 广东电网有限责任公司 | The method and device of on-line maintenance battery group |
| CN110441709A (en) * | 2019-07-29 | 2019-11-12 | 云南电网有限责任公司红河供电局 | A kind of transforming plant DC power-supply system and monitoring method monitoring battery and charging module |
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| CN111509310A (en) * | 2020-03-25 | 2020-08-07 | 国网江西省电力有限公司电力科学研究院 | Method and device for online testing performance of storage battery of direct current system of transformer substation |
| CN112968487A (en) * | 2021-02-18 | 2021-06-15 | 中国长江三峡集团有限公司 | Direct-current power supply system lead-acid storage battery pack discharge test system and method |
| CN113489084A (en) * | 2021-06-07 | 2021-10-08 | 华能西藏雅鲁藏布江水电开发投资有限公司 | Automatic replacement method for single storage battery |
| CN116683060A (en) * | 2023-08-01 | 2023-09-01 | 深圳奥特迅电力设备股份有限公司 | Storage battery pack maintenance method, storage battery pack maintenance device, terminal equipment and storage medium |
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