CN117767428A - Branch SOC equalization method of multi-branch energy storage converter PCS - Google Patents
Branch SOC equalization method of multi-branch energy storage converter PCS Download PDFInfo
- Publication number
- CN117767428A CN117767428A CN202311614341.3A CN202311614341A CN117767428A CN 117767428 A CN117767428 A CN 117767428A CN 202311614341 A CN202311614341 A CN 202311614341A CN 117767428 A CN117767428 A CN 117767428A
- Authority
- CN
- China
- Prior art keywords
- branch
- power
- soc
- value
- whole machine
- 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.)
- Pending
Links
- 238000004146 energy storage Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000007599 discharging Methods 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000004364 calculation method Methods 0.000 claims description 26
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Zxfoom zxfoom multiple kinds of branch energy storage comprises the following steps of the method comprises the following steps: s1, acquiring a branch running state, a charging limiting value, a discharging limiting value, an SOC value of each branch in a battery management system BMS and a power limiting value of a whole machine of a rack in an energy management system EMS, and transmitting the branch running state, the charging limiting value, the discharging limiting value, the SOC value and the power limiting value of the whole machine of the rack to corresponding power modules of each branch in the rack through a monitoring module; the power can be dynamically adjusted according to the branch SOC, so that the SOC of each branch battery is kept balanced, the power of the whole machine is improved, and the economic benefit is increased; the power station uses the multi-branch energy storage converter with the SOC balancing method, so that branch SOC balancing can be performed without depending on EMS, thereby not only improving the income of the energy storage power station, but also reducing the cost of the energy storage power station.
Description
Technical Field
The invention relates to the technical field of photovoltaics, in particular to a branch SOC equalization method of a multi-branch energy storage converter PCS.
Background
Under the condition that the whole capacity of a battery compartment is unchanged, the multi-branch energy storage system divides the originally parallel batteries into a plurality of branches to reduce the circulation among battery clusters, improves the echelon utilization economic value, but can bring the problem of unbalanced SOC of each branch battery, when the individual branches are filled or discharged in advance compared with other branches, the whole power of the energy storage system is reduced, and the dispatching cannot be responded in time, so that the energy storage income is reduced, and branch SOC (battery electric quantity percentage) management is required to be introduced to balance the SOC of each branch battery. Currently, field stations employing energy storage converters (PCS) with multiple branches generally employ 2 schemes in battery branch management, one is no-branch SOC balancing, and the second is energy storage converter branch SOC balancing by EMS (energy management system EMS). An energy storage system electrical system employing a multi-branch energy storage converter is shown in fig. 1.
The entire station communication topology for energy storage converter branch SOC equalization using EMS (energy management system EMS) is shown in fig. 2. The scheme 1 does not balance the branch SOCs, and is simpler, but the SOC of each branch is unbalanced, so that the power of the whole machine is reduced, and the energy storage income is reduced.
In the scheme 2, the branch SOCs are balanced, but the energy management system EMS (EMS) calculates the time consumption required by the SOC balance, the time consumption for reading BMS data, the time consumption for sending a scheduling instruction by a scheduler, the occupied communication bandwidth and other resource expenses are N times of those of a single branch energy storage converter (N is the number of branches in the energy storage converter), and when the power station is huge, the sub-control EMS is needed to be additionally arranged to relieve the pressure of the main control EMS and reduce the scheduling delay, so that the cost of the power station is increased.
Disclosure of Invention
Zxfoom the technical problems are that, technical problem in that the method is characterized in that, providing a method for improving the income of an energy storage power station and reducing the cost of the energy storage power station a branch SOC equalization method and a system of a multi-branch energy storage converter PCS.
Zxfoom Multi-branch energy storage multiple kinds of branch energy storage the branch of the PCS of the multi-branch energy storage converter the SOC equalization method comprises the following steps:
zxfoom S1 the process comprises, zxfoom S1 the process comprises, and the monitoring module is used for controlling the branch running state, the charging current limiting value, the discharging current limiting value the SOC value and the frame complete machine power limit value are transmitted to power modules corresponding to all branches in the frame;
s2, the power module calculates available charge and discharge power of each branch according to the charge current limiting value and the discharge current limiting value of the branch, and sends the available charge and discharge power, the branch running state and the branch SOC value to the auxiliary control module;
and S3, the auxiliary control module gathers the available charge and discharge power of each branch and the SOC value of each branch, calculates the available power of each branch and the total available power of the rack according to the available charge and discharge power, distributes power to each branch according to the SOC value and the available power, and sends the power to each branch in proportion.
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; setting the limit value of the power of the whole machine of the frame to be P in the step S1 Rack Max, where P Rack Max＝PB 1 ChgDischgCap+PB 2 ChgDischgCap+…PB N ChgDischgCap, where N is the total number of branches.
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; in the step S2, when the energy storage converter PCS is in a charging state, the available power of each branch is equal to the maximum charging power of each branch, and when the energy storage converter PCS is in a discharging state, the available power pbmchgdischgcap=the maximum discharging power of each branch; wherein the available power of each branch is PB m ChgDischgCap, branch number m, m=1, 2, 3 … N.
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; the step S3 includes the steps of:
s31, setting limit on power, limiting the maximum power Pset from the monitoring module to P Rack Max, and assigning the power Pset from the monitoring and control module to a final power reference of the whole machine of the rack, wherein the final power reference of the whole machine of the rack is Pref.
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; the step S3 includes the further steps of:
s32, calculating the power average of each branch, wherein the calculation formula of the power average of each branch is PAvg=pref/N, wherein N is the total branch number, and Pref is the final power reference of the whole machine of the machine frame;
s33, assigning an initial value of the total machine unassigned power as the total machine frame unassigned power, wherein the total machine frame unassigned power is P Distri Remain＝Pref；
S34, calculating the total SOC value sum SumSOC of all the branches of the whole machine of the frame.
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; the step S3 further includes the steps of:
s35, re-performing the power distribution calculation value PB of the distribution branch m on the power which is not removed during charging m Alloc, wherein the power allocation calculation value of the branch m is PB m Alloc＝(SumSOC/B m SOC)/(SumSOC/B 1 SOC+SumSOC/B 2 SOC+…SumSOC/B N SOC)*P Distri Remain；
S36, during discharging, the power distribution calculated value PB of the module power redistribution branch m which is not removed is calculated m Alloc＝B m SOC/SumSOC*P Distri Remain, wherein P Distri Remain is the unassigned power of the whole machine of the rack, B m The SOC is that of branch m.
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; the step S3 further includes the steps of:
s37, when the power distribution calculation value PB of branch m m Alloc>PB m Marking branch m by ChgDischgCap to reject it in the next power allocationThe method comprises the steps of carrying out a first treatment on the surface of the If P Distri Remain>Available power PB of branch m m ChgDischgCap, then the power allocation final value PB of leg m m Set = available power PB of branch m m ChgDischgCap; when the whole machine of the frame is not distributed with power P Distri Remain<Available power PB of branch m m ChgDischgCap, then the power allocation final value PB of leg m m Set = frame complete machine unassigned power P Distri Remain; from the complete machine of the frame to distribute power P Distri The final value PB of power allocation of the deduction branch m in domain m Set。
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; the step S3 further includes the steps of:
s38, when the power distribution calculation value PB of branch m m Alloc<Available power PB of branch m m When ChgDischgCap is in, the power P is not distributed to the whole machine of the frame Distri Remain>Power allocation calculation PB for branch m m Alloc, the power allocation final value PB of branch m m Set=power allocation calculation PB of branch m m Alloc; if the whole machine of the rack is not distributed with power P Distri Remain<Power allocation calculation PB for branch m m Alloc, the power allocation final value PB of branch m m Set = frame complete machine unassigned power P Distri Remain, mark branch m at the same time, make it reject in the power distribution of the next time; from the complete machine of the frame to distribute power P Distri The final value PB of power allocation of the deduction branch m in domain m Set; the steps S34, S35 and S36 are circulated until PB 1 Set+PB 2 Set+…PB N Set=pref, and the cycle is completed.
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; the branch SOC equalization method further comprises the step S5 of calculating a branch m power compensation coefficient PB m Coeff; the calculation formula of the branch m power compensation coefficient is PB m Coeff＝(PB m Set-PAvg)/PAvg。
In the branch SOC equalization method of the multi-branch energy storage converter PCS, the power supply is connected with the power supply through the power supply line; in the step S5, if the complete machine is in the shutdown state, power output is not executed; if the whole machine is in an operation state and is in a power step mode, immediately changing the current output power; if the whole machine is in an operation state and is in a slope mode, the gradual change power of the branch circuit where the power module is positioned is dynamically adjusted according to the current power gradual change results of other branch circuits, so that the power and the slope of the whole machine are kept unchanged.
The branch SOC balancing method of the multi-branch energy storage converter PCS can dynamically adjust power according to the branch SOCs, so that the SOCs of all branch batteries are kept balanced, the power of the whole machine is improved, and economic benefits are increased; the power station uses the multi-branch energy storage converter with the SOC balancing method, so that branch SOC balancing can be performed without depending on EMS, thereby not only improving the income of the energy storage power station, but also reducing the cost of the energy storage power station.
Drawings
Fig. 1 is an electrical system diagram of a prior art scheme 1 of a branch SOC balancing method for a multi-branch energy storage converter PCS of the present invention;
fig. 2 is a topology diagram of a prior art scheme 2 of a branch SOC balancing method of a multi-branch energy storage converter PCS of the present invention.
Fig. 3 is a schematic flow chart of an embodiment of a branch SOC balancing method of the multi-branch energy storage converter PCS of the present invention;
fig. 4 is a block flow diagram of a module in an embodiment of a method for equalizing the branch SOC of the PCS of the multi-branch energy storage converter of the present invention;
fig. 5 is another flow chart of an embodiment of a method for equalizing the branch SOC of the PCS of the multi-branch energy storage converter of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Fig. 3-5 show a schematic flow chart of an embodiment of a branch SOC balancing method of a multi-branch energy storage converter PCS according to the present invention. The branch SOC equalization method of the multi-branch energy storage converter PCS comprises the following steps:
in step S1, acquiring a branch running state, a charging current limit value, a discharging current limit value, an SOC value and a frame whole machine power limit value in an energy management system EMS of each branch in a battery management system BMS, and transmitting the branch running state, the charging current limit value, the discharging current limit value, the SOC value and the frame whole machine power limit value to a power module corresponding to each branch in the frame through a monitoring module;
in step S2, the power module calculates available charge and discharge power of each branch according to the charge current limit value and the discharge current limit value of the branch, and sends the available charge and discharge power, the branch running state and the branch SOC value to the auxiliary control module;
in step S3, the auxiliary control module gathers the available charge and discharge power of each branch and the SOC value of each branch, calculates the available power of each branch and the total available power of the rack according to the available charge and discharge power, distributes power to each branch according to the SOC value and the available power, and distributes the power to each branch in proportion.
In one embodiment, in the step S1, the frame total power limit value is set to P Rack Max, where P Rack Max＝PB 1 ChgDischgCap+PB 2 ChgDischgCap+…PB N ChgDischgCap, where N is the total number of branches.
In an embodiment, in the step S2, when the energy storage converter PCS is in a charging state, the available power of each branch is equal to the maximum charging power of each branch, and when the energy storage converter PCS is in a discharging state, the available power pbmchgdischgcap=maximum discharging power of each branch; wherein the available power of each branch is PB m ChgDischgCap, branch number m, m=1, 2, 3 … N.
In one embodiment, the step S3 includes the steps of:
in step S31, a limit is set on the power, limiting the power Pset from the monitoring module to a maximum of P Rack Max, and assigning the power Pset from the monitoring and control module to a final power reference of the whole machine of the rack, wherein the final power reference of the whole machine of the rack is Pref.
In an embodiment, the step S3 includes the further steps of:
in step S32, calculating the power average of each branch, where the calculation formula of the power average of each branch is pavg=pref/N, where N is the total number of branches, and Pref is the final power reference of the whole machine of the rack;
in step S33, the initial value of the power unassigned to the whole machine is the power unassigned to the whole machine, wherein the power unassigned to the whole machine is P Distri Remain＝Pref；
In step S34, the total SOC value of the branches not removed is calculated to obtain the sum SumSOC of the SOC values of all the branches of the whole frame.
In an embodiment, the step S3 further includes the steps of:
in step S35, the power distribution calculation value PB of the distribution branch m is performed again for the power which is not removed during charging m Alloc, wherein the power allocation calculation value of the branch m is PB m Alloc＝(SumSOC/B m SOC)/(SumSOC/B 1 SOC+SumSOC/B 2 SOC+…SumSOC/B N SOC)*P Distri Remain；
In step S36, during discharging, the power of the module power redistribution branch m which is not removed is distributedCalculated value PB m Alloc＝B m SOC/SumSOC*P Distri Remain, wherein P Distri Remain is the unassigned power of the whole machine of the rack, B m The SOC is that of branch m.
In an embodiment, the step S3 further includes the steps of:
in step S37, when the power allocation calculation value PB of the branch m m Alloc>PB m Marking branch m by ChgDischgCap to reject in next power distribution; if P Distri Remain>Available power PB of branch m m ChgDischgCap, then the power allocation final value PB of leg m m Set = available power PB of branch m m ChgDischgCap; when the whole machine of the frame is not distributed with power P Distri Remain<Available power PB of branch m m ChgDischgCap, then the power allocation final value PB of leg m m Set = frame complete machine unassigned power P Distri Remain; from the complete machine of the frame to distribute power P Distri The final value PB of power allocation of the deduction branch m in domain m Set。
In an embodiment, the step S3 further includes the steps of:
in step S38, when the power distribution calculation value PB of the branch m m Alloc<Available power PB of branch m m When ChgDischgCap is in, the power P is not distributed to the whole machine of the frame Distri Remain>Power allocation calculation PB for branch m m Alloc, the power allocation final value PB of branch m m Set=power allocation calculation PB of branch m m Alloc; if the whole machine of the rack is not distributed with power P Distri Remain<Power allocation calculation PB for branch m m Alloc, the power allocation final value PB of branch m m Set = frame complete machine unassigned power P Distri Remain, mark branch m at the same time, make it reject in the power distribution of the next time; from the complete machine of the frame to distribute power P Distri The final value PB of power allocation of the deduction branch m in domain m Set; the steps S34, S35 and S36 are circulated until PB 1 Set+PB 2 Set+…PB N Set=pref, and the cycle is completed.
In an embodiment, the method for equalizing the branch SOC further includes step S5 of calculating a branch m power compensation coefficient PB m Coeff; the calculation formula of the branch m power compensation coefficient is PB m Coeff＝(PB m Set-PAvg)/PAvg。
In one embodiment, in the step S5, if the complete machine is in the shutdown state, power output is not performed; if the whole machine is in an operation state and is in a power step mode, immediately changing the current output power; if the whole machine is in an operation state and is in a slope mode, the gradual change power of the branch circuit where the power module is positioned is dynamically adjusted according to the current power gradual change results of other branch circuits, so that the power and the slope of the whole machine are kept unchanged.
The monitoring module is in communication connection with the battery management system BMS and the power module, and sends the SOC of each battery cluster in the battery management system to the power module of the corresponding branch. The auxiliary control module is responsible for an SOC balance dynamic power distribution algorithm, and the power setting of each branch is adjusted according to the SOC value of each branch.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.
Therefore, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the scope of the present invention, which is defined by the claims.
Claims (10)
1. A branch SOC equalization method of a multi-branch energy storage converter PCS is characterized by comprising the following steps:
s1, acquiring a branch running state, a charging limiting value, a discharging limiting value, an SOC value of each branch in a battery management system BMS and a power limiting value of a whole machine of a rack in an energy management system EMS, and transmitting the branch running state, the charging limiting value, the discharging limiting value, the SOC value and the power limiting value of the whole machine of the rack to corresponding power modules of each branch in the rack through a monitoring module;
s2, the power module calculates available charge and discharge power of each branch according to the charge current limiting value and the discharge current limiting value of the branch, and sends the available charge and discharge power, the branch running state and the branch SOC value to the auxiliary control module;
and S3, the auxiliary control module gathers the available charge and discharge power of each branch and the SOC value of each branch, calculates the available power of each branch and the total available power of the rack according to the available charge and discharge power, distributes power to each branch according to the SOC value and the available power, and sends the power to each branch in proportion.
2. The method for branch SOC equalization of a multi-branch power storage converter PCS according to claim 1, wherein in said step S1, a frame complete power limit value is set to P Rack Max, where P Rack Max＝PB 1 ChgDischgCap+PB 2 ChgDischgCap+…PB N ChgDischgCap, where N is the total number of branches.
3. The method according to claim 2, wherein in said step S2, the available power of each branch is equal to the maximum charging power of each branch when the energy storage converter PCS is in a charged state, and the available power PB of branch m when the energy storage converter PCS is in a discharged state m ChgDischgCap = branch maximum discharge power; wherein the available power of each branch is PB m ChgDischgCap, branch number m, m=1, 2, 3 … N.
4. The method for equalizing the branch SOCs of the multi-branch power storage converter PCS according to claim 3, wherein said step S3 includes the steps of:
s31, setting limit on power, limiting the maximum power Pset from the monitoring module to P Rack Max, and assigning the power Pset from the monitoring and control module to a final power reference of the whole machine of the rack, wherein the final power reference of the whole machine of the rack is Pref.
5. The method for branch SOC equalization of a multi-branch power storage converter PCS of claim 4, wherein step S3 includes the further steps of:
s32, calculating the power average of each branch, wherein the calculation formula of the power average of each branch is PAvg=pref/N, wherein N is the total branch number, and Pref is the final power reference of the whole machine of the machine frame;
s33, assigning an initial value of the total machine unassigned power as the total machine frame unassigned power, wherein the total machine frame unassigned power is P Distri Remain＝Pref；
S34, calculating the total SOC value sum SumSOC of all the branches of the whole machine of the frame.
6. The method for branch SOC equalization of a multi-branch power storage converter PCS of claim 5, wherein said step S3 further includes the steps of:
s35, re-executing the power which is not removed during chargingPower allocation calculation PB of allocation branch m m Alloc, wherein the power allocation calculation value of the branch m is PB m Alloc＝(SumSOC/B m SOC)/(SumSOC/B 1 SOC+SumSOC/B 2 SOC+…SumSOC/B N SOC)*P Distri Remain；
S36, during discharging, the power distribution calculated value PB of the module power redistribution branch m which is not removed is calculated m Alloc＝B m SOC/SumSOC*P Distri Remain, wherein P Distri Remain is the unassigned power of the whole machine of the rack, B m The SOC is that of branch m.
7. The method for branch SOC equalization of a multi-branch power storage converter PCS of claim 6, wherein said step S3 further includes the steps of:
s37, when the power distribution calculation value PB of branch m m Alloc>PB m Marking branch m by ChgDischgCap to reject in next power distribution; if P Distri Remain>Available power PB of branch m m ChgDischgCap, then the power allocation final value PB of leg m m Set = available power PB of branch m m ChgDischgCap; when the whole machine of the frame is not distributed with power P Distri Remain<Available power PB of branch m m ChgDischgCap, then the power allocation final value PB of leg m m Set = frame complete machine unassigned power P Distri Remain; from the complete machine of the frame to distribute power P Distri The final value PB of power allocation of the deduction branch m in domain m Set。
8. The method for branch SOC equalization of a multi-branch power storage converter PCS of claim 7, wherein said step S3 further includes the steps of:
s38, when the power distribution calculation value PB of branch m m Alloc<Available power PB of branch m m When ChgDischgCap is in, the power P is not distributed to the whole machine of the frame Distri Remain>Power allocation calculation PB for branch m m Alloc, the power allocation final value PB of branch m m Set=power division of branch mMatch calculated value PB m Alloc; if the whole machine of the rack is not distributed with power P Distri Remain<Power allocation calculation PB for branch m m Alloc, the power allocation final value PB of branch m m Set = frame complete machine unassigned power P Distri Remain, mark branch m at the same time, make it reject in the power distribution of the next time; from the complete machine of the frame to distribute power P Distri The final value PB of power allocation of the deduction branch m in domain m Set; the steps S34, S35 and S36 are circulated until PB 1 Set+PB 2 Set+…PB N Set=pref, and the cycle is completed.
9. The method for branch SOC equalization of a multi-branch energy storage converter PCS of claim 1 further comprising step S5 of calculating a branch m power compensation coefficient PB m Coeff; the calculation formula of the branch m power compensation coefficient is PB m Coeff＝(PB m Set-PAvg)/PAvg。
10. The method for branch SOC equalization of a multi-branch power storage converter PCS according to claim 9, wherein in said step S5, if the whole machine is currently in a shutdown state, no power output is performed; if the whole machine is in an operation state and is in a power step mode, immediately changing the current output power; if the whole machine is in an operation state and is in a slope mode, the gradual change power of the branch circuit where the power module is positioned is dynamically adjusted according to the current power gradual change results of other branch circuits, so that the power and the slope of the whole machine are kept unchanged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311614341.3A CN117767428A (en) | 2023-11-28 | 2023-11-28 | Branch SOC equalization method of multi-branch energy storage converter PCS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311614341.3A CN117767428A (en) | 2023-11-28 | 2023-11-28 | Branch SOC equalization method of multi-branch energy storage converter PCS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117767428A true CN117767428A (en) | 2024-03-26 |
Family
ID=90319080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311614341.3A Pending CN117767428A (en) | 2023-11-28 | 2023-11-28 | Branch SOC equalization method of multi-branch energy storage converter PCS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117767428A (en) |
-
2023
- 2023-11-28 CN CN202311614341.3A patent/CN117767428A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9783068B2 (en) | Method and apparatus for providing electrical energy | |
| CN111756058B (en) | Charging and discharging power distribution method for energy storage system | |
| US20190054830A1 (en) | Method and device for providing electrical energy | |
| Ziras et al. | Decentralized and discretized control for storage systems offering primary frequency control | |
| CN112310990A (en) | Charge state-based balancing control method for multiple energy storage systems of direct-current micro-grid | |
| CN108462217B (en) | Scheduling algorithm of power supply unit of charging pile and power supply system of charging pile | |
| CN113910961A (en) | Flexible charging power distribution method, device and system for electric automobile | |
| CN114744720A (en) | Power balance control method for multi-battery energy storage system | |
| CN112910023A (en) | Charging pile and control method and device thereof | |
| US11742664B2 (en) | Methods and systems for charging or discharging energy storage systems | |
| CN109460870B (en) | Cluster electric automobile interaction method considering blocking | |
| US11888334B2 (en) | Methods and systems for charging or discharging energy storage systems | |
| CN116404683B (en) | Energy regulation and control method, device, terminal and medium of flexible-direct interconnection system | |
| CN110600819B (en) | Electric quantity balance control system and method of battery system | |
| CN117767428A (en) | Branch SOC equalization method of multi-branch energy storage converter PCS | |
| CN115986883A (en) | Energy storage system and control method thereof | |
| CN108512262B (en) | Energy storage battery management system and equalization method and device thereof | |
| CN113078668B (en) | Method, system, equipment and storage medium for realizing demand side response virtual power station | |
| CN112467774B (en) | Energy storage system control method and device based on global energy efficiency optimization and SOC self-adaption | |
| CN115064788A (en) | SOC balance control method of energy storage system and related device | |
| CN114914920A (en) | Energy storage system and control method thereof | |
| CN118508572B (en) | Balanced control method and device for battery energy storage system | |
| CN114228544B (en) | Equalizing distribution method and system for charging pile charging modules | |
| CN113928140B (en) | Charging method, EMS controller and charging system | |
| CN115320444B (en) | Electric vehicle quick charging system with power dynamic distribution function |
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 |