CN116073420A - Multi-application-scene energy storage power station multi-level AGVC control method - Google Patents

Multi-application-scene energy storage power station multi-level AGVC control method Download PDF

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CN116073420A
CN116073420A CN202310206420.4A CN202310206420A CN116073420A CN 116073420 A CN116073420 A CN 116073420A CN 202310206420 A CN202310206420 A CN 202310206420A CN 116073420 A CN116073420 A CN 116073420A
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power
pcs
energy storage
agvc
target
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CN116073420B (en
Inventor
栾伟
姚春琴
姬来清
杨清浩
郭庆宝
王志亮
王兴启
冯炳辉
谢柳
张琪
栾淑娜
侯鑫
刘祥东
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Yantai Development Zone Delian Software Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
    • H02J7/0014—Circuits for equalisation of charge between batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/10—Flexible AC transmission systems [FACTS]

Abstract

The invention discloses a multi-application-scene energy storage power station multi-level AGVC control method, which relates to the technical field of automatic power generation control and comprises the following steps: s01, modeling an energy storage power station as a hierarchical equipment model based on PCS (process control System), wherein S02, target power is calculated, upper and lower limits of regional frequency or upper and lower limits of regional voltage are checked, and upper and lower limits of regional power are checked; and S03, carrying out power distribution on the device models of all the layers according to a power distribution algorithm. The method models the energy storage power station as a three-layer equipment model of an area, a PCS group and a PCS, wherein the equipment model has similar equipment parameters, and a power distribution algorithm can be adopted to reasonably distribute power to the PCS.

Description

Multi-application-scene energy storage power station multi-level AGVC control method
Technical Field
The invention relates to the technical field of electrochemical energy storage power station control, in particular to a multi-level AGVC control method for an energy storage power station in a multi-application scene.
Background
The scale and the use of the domestic energy storage power stations are different, the operation and management modes are also different, for example, some AGC instructions issued by receiving scheduling, some local operation planning curves, some operation customization strategies and complex and various functional requirements are also different. In addition, at present, a plurality of domestic PCS and BMS manufacturers lack unified standards in control and data. When the control process of the energy storage power station is abnormal and complex, the control cost is high and the control efficiency is low under the conditions of different equipment such as various application scenes, PCS, BMS and the like, different project designs, flexible and changeable user demands and the like.
Disclosure of Invention
The invention aims to avoid the defects of the prior art and provides a multi-level AGVC control method for an energy storage power station with multiple application scenes, so that the defects in the prior art are effectively overcome.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the invention provides a multi-application-scene energy storage power station multi-level AGVC control method, which is characterized by comprising the following steps of: the method comprises the following steps:
s01, modeling an energy storage power station as a hierarchical device model based on PCS;
s02, calculating target power, checking upper and lower limits of region frequency or region voltage, and checking upper and lower limits of region power;
and S03, carrying out power distribution on the device models of all the layers according to a power distribution algorithm.
Further, in the step S01, the hierarchical device model based on PCS is divided into a region, a PCS group and a PCS three-layer device model, where the region is composed of a plurality of PCS groups, and the PCS group is composed of a plurality of PCS.
Further, the areas are divided according to booster stations or grid-connected points;
the PCS groups are divided according to the positions of buses or boxes or the models of PCS or batteries.
Further, if active control is performed, the step S02 includes the steps of:
s021, judging the target power type, if the target power type is the regional power, calculating the target power considering the loss in the station, wherein the calculating mode is as follows: current regional power-current PCS power + target power; if the power is PCS power, the loss in the station is not considered;
s022, checking whether the upper limit and the lower limit of the regional frequency pass or not, and if not, adjusting the target power; if the power of the detected area passes, the upper limit and the lower limit of the power of the detected area are carried out;
s023, checking whether the upper limit and the lower limit of the regional power pass or not, and if not, adjusting the target power; if so, power distribution is performed.
Further, if reactive power control is performed, the step S02 includes the steps of:
SS021, judge the goal power type, if it is the regional power, calculate and consider the goal power of the intra-station loss, the calculation mode is: current regional power-current PCS power + target power; if the power is PCS power, the loss in the station is not considered;
SS022, checking whether the upper and lower limits of the region voltage pass or not, if not, adjusting the target power; if the power of the detected area passes, the upper limit and the lower limit of the power of the detected area are carried out;
SS023, checking whether the upper and lower limits of the regional power pass or not, and if not, adjusting the target power; if so, power distribution is performed.
Further, in the case of active control,
the adjustment target power in step S022 specifically includes:
reducing the discharge power if the area frequency is higher than the upper limit, and reducing the charge power if the area frequency is lower than the lower limit;
the adjusting target power in the step S023 specifically includes:
the charging power is reduced if the area power is higher, and the discharging power is reduced if the area power is lower.
Further, in the reactive power control,
the adjusting target power in step SS022 specifically includes:
reducing the capacitive power if the voltage is higher, and reducing the inductive power if the voltage is lower;
the adjusting target power in the step SS023 specifically includes:
the capacitive power is reduced if the area power is higher, and the inductive power is reduced if the area power is lower.
Further, the power allocation algorithm in the step S03 includes the following steps:
s031, calculating the maximum charge and discharge power;
s032, calculating and sequencing the SOC;
s033, calculating SOC balance coefficient
Figure SMS_1
，/>
Figure SMS_2
Wherein->
Figure SMS_3
For maximum SOC value, +.>
Figure SMS_4
For minimum SOC value, +.>
Figure SMS_5
For maximum SOC difference between groups, +.>
Figure SMS_6
For equalizing target value, +.>
Figure SMS_7
；
Calculating the power allocated according to the maximum charge-discharge power
Figure SMS_8
And power allocated by SOC balance coefficient +.>
Figure SMS_9
Wherein, the method comprises the steps of, wherein,
Figure SMS_10
，/>
Figure SMS_11
is the total required power;
s034, proportionally distributing according to the maximum charge and discharge power
Figure SMS_12
And left unassigned +.>
Figure SMS_13
Added to->
Figure SMS_14
Obtaining new power;
s035, iteratively allocating and updating the remaining maximum charge-discharge power and the total unallocated power P by capacity r ；
S036, if the total unallocated power
Figure SMS_15
If the charge and discharge power is 0 or the maximum charge and discharge power reaches the maximum value, ending the distribution or carrying out the next-stage distribution;
if the power is not distributed
Figure SMS_16
If the charge/discharge power is not 0 or the maximum charge/discharge power does not reach the maximum value, the process returns to step S035.
Another aspect of the present invention provides a storage medium having stored thereon a computer program characterized in that: and when the computer program is executed by a processor, the steps of the multi-application-scene energy storage power station multi-level AGVC control method are realized.
Another aspect of the present invention provides a computer apparatus characterized in that: the multi-application-scenario energy storage power station multi-level AGVC control method comprises a storage medium, a processor and a computer program stored in the storage medium and executable by the processor, wherein the computer program realizes the steps of the multi-application-scenario energy storage power station multi-level AGVC control method when being executed by the processor.
The technical scheme of the invention has the following beneficial effects: according to the multi-application-scene energy storage power station multi-level AGVC control method, the energy storage power station is divided into the areas, the PCS groups and the PCS three-layer equipment layers according to actual project conditions, and similar equipment parameters and algorithms are arranged on the basis of the power distribution layers, so that the control algorithm is convenient to realize, the multi-application-scene energy storage power station multi-level AGVC control method can be flexibly applied to various scenes and equipment, the difference of equipment such as PCS, BMS and the like, the difference of project design, the flexibility and the variability of user requirements and the like are fully considered, various operation modes such as local, dispatching, planning curve, smoothing, peak clipping and valley filling and the like are supported, and the technical problems of abnormal complexity, high control cost and low control efficiency of the energy storage power station are solved.
Drawings
Fig. 1 is a schematic diagram of a multi-application scenario energy storage power station multi-level AGVC control method according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of active control according to an embodiment of the present invention;
FIG. 3 is a reactive control schematic of an embodiment of the present invention;
fig. 4 is a schematic diagram of a power allocation algorithm according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
Noun interpretation:
AGVC: automatic power generation and voltage reactive power control;
AGC: automatic power generation control;
PCS: the energy storage converter can control the charging and discharging processes of the battery to perform AC/DC conversion;
BMS: a battery management system;
SOC: a battery remaining power;
RTU: a remote terminal unit. A special computer measurement and control unit with a modularized structure is designed aiming at long communication distance and severe industrial field environment.
The invention provides a multi-application-scene energy storage power station multi-level AGVC control method, which is characterized by comprising the following steps of: the method comprises the following steps:
s01, modeling an energy storage power station as a hierarchical device model based on PCS;
s02, calculating target power, checking upper and lower limits of region frequency or region voltage, and checking upper and lower limits of region power;
and S03, carrying out power distribution on the device models of all the layers according to a power distribution algorithm.
Further, in the step S01, the hierarchical device model based on PCS is divided into a region, a PCS group and a PCS three-layer device model, where the region is composed of a plurality of PCS groups, and the PCS group is composed of a plurality of PCS.
Further, the areas are divided according to booster stations or grid-connected points;
the PCS groups are divided according to the positions of buses or boxes or the models of PCS or batteries.
The whole of the region, group, PCS can be seen as a tree structure, they can be seen as similar devices, and thus many similar parameters can be abstracted. The control method between layers is similar, so that algorithm implementation is facilitated. By the method, the area is taken as the basic unit of the algorithm, all control strategies and operations take the area as the basic unit, all PCS charge and discharge under the area are controlled, area target power tracking is realized, and multi-area parallel synchronous operation is supported.
The region, group, PCS have similar input parameters:
device ID, device description, upper device ID (thus constructing hierarchical relationship), active upper and lower limits, reactive upper and lower limits, SOC upper and lower limits, rated capacity, rated power, reference voltage;
the parameters of the region are: the reactive power voltage control method comprises the steps of an active frequency characteristic, a reactive voltage characteristic and a voltage upper limit and a voltage lower limit, wherein the active frequency characteristic is used for judging the influence of a unit active MW on frequency when adjusting active power, the reactive voltage characteristic is used for adjusting reactive power, the influence of a unit reactive power Mvar on voltage, or the quantity of reactive power which needs to be given when voltage adjustment is needed, and the voltage upper limit and the voltage lower limit are used for voltage limitation when reactive voltage adjustment is needed;
the parameters of the PCS were: RTU number, active control address, active control coefficient, reactive control address, reactive control coefficient;
the regions, groups, PCS have similar input measurements (derived from the acquired real-time data):
active, reactive, maximum allowable charge-discharge active, maximum allowable charge-discharge reactive;
specific measurements of the area are: voltage, frequency, active load, reactive load;
specific measurements of PCS were: operating state (for determining whether PCS power is controllable, 0 for uncontrollable, 1 for controllable);
the region, group, PCS have custom locking parameters:
the locking parameters are as follows: latch ID, latch type, latch ID, latch signal code, latch condition, latch value, latch protection;
blocking ID: a unique identification of the locking parameter;
type of locking device: the type of device blocked, region, group, PCS described above;
locking device ID: an ID of the locked device;
locking signal codes: the code of the locking signal, obtain the current value of the locking signal through this code;
blocking condition: the comparison condition of the current value of the locking signal and the locking value is greater than, greater than or equal to, less than or equal to, equal to or unequal to;
blocking value: judging whether the locking signal meets the condition or not;
and (3) locking protection: the protection triggered when the locking condition is met comprises stopping, active limit charging, active limit amplifying, inductive-limiting reactive power and capacitive-limiting reactive power;
that is, the real-time value of the latch signal is compared with the latch value by the latch condition, and when the condition is satisfied, the latch is established, and the designated latch protection is triggered.
Further, if active control is performed, the step S02 includes the steps of:
s021, judging the target power type, if the target power type is the regional power, calculating the target power considering the loss in the station, wherein the calculating mode is as follows: current regional power-current PCS power + target power; if the power is PCS power, the loss in the station is not considered;
s022, checking whether the upper limit and the lower limit of the regional frequency pass or not, and if not, adjusting the target power; if the power of the detected area passes, the upper limit and the lower limit of the power of the detected area are carried out;
s023, checking whether the upper limit and the lower limit of the regional power pass or not, and if not, adjusting the target power; if so, power distribution is performed.
Further, if reactive power control is performed, the step S02 includes the steps of:
SS021, judge the goal power type, if it is the regional power, calculate and consider the goal power of the intra-station loss, the calculation mode is: current regional power-current PCS power + target power; if the power is PCS power, the loss in the station is not considered;
SS022, checking whether the upper and lower limits of the region voltage pass or not, if not, adjusting the target power; if the power of the detected area passes, the upper limit and the lower limit of the power of the detected area are carried out;
SS023, checking whether the upper and lower limits of the regional power pass or not, and if not, adjusting the target power; if so, power distribution is performed.
Further, in the case of active control,
the adjustment target power in step S022 specifically includes:
reducing the discharge power if the area frequency is higher than the upper limit, and reducing the charge power if the area frequency is lower than the lower limit;
the adjusting target power in the step S023 specifically includes:
the charging power is reduced if the area power is higher, and the discharging power is reduced if the area power is lower.
Further, in the reactive power control,
the adjusting target power in step SS022 specifically includes:
reducing the capacitive power if the voltage is higher, and reducing the inductive power if the voltage is lower;
the adjusting target power in the step SS023 specifically includes:
the capacitive power is reduced if the area power is higher, and the inductive power is reduced if the area power is lower.
Further, the power allocation algorithm in the step S03 includes the following steps:
s031, calculating the maximum charge and discharge power;
s032, calculating and sequencing the SOC;
s033, calculating SOC balance coefficient
Figure SMS_17
，/>
Figure SMS_18
Wherein->
Figure SMS_19
For maximum SOC value, +.>
Figure SMS_20
For minimum SOC value, +.>
Figure SMS_21
For maximum SOC difference between groups, +.>
Figure SMS_22
For equalizing target value, +.>
Figure SMS_23
；
Calculating the power allocated according to the maximum charge-discharge power
Figure SMS_24
And power allocated by SOC balance coefficient +.>
Figure SMS_25
Wherein, the method comprises the steps of, wherein,
Figure SMS_26
，/>
Figure SMS_27
is the total required power;
s034, proportionally distributing according to the maximum charge and discharge power
Figure SMS_28
And left unassigned +.>
Figure SMS_29
Added to->
Figure SMS_30
Obtaining new power;
s034, proportionally distributing according to the maximum charge and discharge power
Figure SMS_31
And left unassigned +.>
Figure SMS_32
Added to->
Figure SMS_33
Obtaining new power;
s035, iteratively allocating and updating the remaining maximum charge-discharge power and the total unallocated power P by capacity r ；
S036, if the total unallocated power
Figure SMS_34
If the charge and discharge power is 0 or the maximum charge and discharge power reaches the maximum value, ending the distribution or carrying out the next-stage distribution;
if the power is not distributed
Figure SMS_35
If the charge/discharge power is not 0 or the maximum charge/discharge power does not reach the maximum value, the process returns to step S035.
The method models the energy storage power station as a region, a PCS group and a PCS three-layer equipment model, and the equipment has similar equipment parameters. For the power distribution algorithms, the main parameters used by the power distribution algorithms are current power, maximum charge and discharge power (hereinafter referred to as capacity), SOC, rated capacity, chargeable and dischargeable quantity and SOC balance target values.
The parameters of the PCS are generally obtained by directly acquiring the PCS and the BMS, and the parameters of the PCS group and the region can be obtained by summing according to the relation of the equipment model, and can also be obtained directly through the related parameters.
The capacity (maximum charge and discharge power), SOC, rated capacity and chargeable and dischargeable quantity of PCS, PCS groups and areas are obtained step by step.
The same power allocation method is adopted from region to PCS group, and PCS group allocation under one region is taken as an example, assuming that the region is formed by N PCS groups,
total required power is P R The power finally allocated to the ith PCS group is Pi, and the algorithm finds the power finally allocated to each PCS group:
Figure SMS_36
Figure SMS_37
capability for a single PCS group, +.>
Figure SMS_38
The capacity of the region is the sum of all PCS groups, and the capacity of the PCS group is the sum of all PCS capacities under the group;
Figure SMS_39
;/>
Figure SMS_40
for maximum SOC value, +.>
Figure SMS_41
Is the minimum SOC value; />
Figure SMS_42
Is the maximum SOC difference between groups; SOC balance target value is
Figure SMS_43
。
From the following components
Figure SMS_44
And->
Figure SMS_45
Solving for the distribution coefficient considering the SOC balance>
Figure SMS_46
；
Then, find P s And P a :
Figure SMS_47
P a For power allocated per capacity, P s Power allocated to consider SOC equalization;
Figure SMS_48
P ai to allocate power per capability to each group,
Figure SMS_49
after capacity allocation, each PCS remains capacity; p (P) ar Remaining unassigned power after capacity assignment; p (P) r For total remaining unassigned power, secondary allocation considering SOC balance is to be performed;
the secondary distribution is firstly ordered according to the SOC, if the secondary distribution is charged, the secondary distribution is ordered from small to large according to the SOC, and if the secondary distribution is discharged, the secondary distribution is ordered from large to small according to the SOC;
Figure SMS_50
in the above, C i For the rated power of the group,
Figure SMS_51
SOC as a group, C ci The charging and discharging amount is chargeable or dischargeable, and the discharging amount is dischargeable;
Figure SMS_52
i is the serial number of the group, starting from 0 and relating to the SOC ordering; c (C) cs For the total chargeable or dischargeable amount of the ith to nth groups at the ith group; p (P) ci Is the group target power obtained for P cd For this allocated power, the total remaining unallocated power P is updated last r ；
When Pr is 0 or cannot be allocated, allocation is complete. When Pr is not 0, repeating the above process until Pr is 0 or no redistribution is possible;
obtaining the group target power P through the above calculation ci As the required power of the group, the above flow is repeated, and the power allocated to each PCS is found.
Another aspect of the present invention provides a storage medium having stored thereon a computer program characterized in that: and when the computer program is executed by a processor, the steps of the multi-application-scene energy storage power station multi-level AGVC control method are realized.
Another aspect of the present invention provides a computer apparatus characterized in that: the multi-application-scenario energy storage power station multi-level AGVC control method comprises a storage medium, a processor and a computer program stored in the storage medium and executable by the processor, wherein the computer program realizes the steps of the multi-application-scenario energy storage power station multi-level AGVC control method when being executed by the processor.
The Memory may include random access Memory (Random Access Memory, RAM) or Read-Only Memory (ROM). The memory may be used to store instructions, programs, code sets, or instruction sets. The memory may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for implementing at least one function, instructions for implementing the various method embodiments described below, and the like. The storage data area may also store data created by the electronic device in use.
The processor may include one or more processing cores. The processor uses various interfaces and lines to connect various portions of the overall electronic device, perform various functions of the electronic device, and process data by executing or executing instructions, programs, code sets, or instruction sets stored in memory, and invoking data stored in memory. Alternatively, the processor may be implemented in hardware in at least one of digital signal processing (Digital Signal Processing, DSP), field programmable gate array (Field-Programmable Gate Array, FPGA), programmable logic array (Programmable Logic Array, PLA). The processor may integrate one or a combination of several of a central processing unit (Central Processing Unit, CPU) and a modem etc. Wherein, the CPU mainly processes an operating system, application programs and the like; the modem is used to handle wireless communications. It will be appreciated that the modem may not be integrated into the processor and may be implemented solely by a single communication chip.
The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or to limit the invention to the precise forms disclosed, and many modifications and variations will be apparent to those skilled in the art and may be selected to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (10)

1. A multi-application-scene energy storage power station multi-level AGVC control method is characterized by comprising the following steps of: the method comprises the following steps:
s01, modeling an energy storage power station as a hierarchical device model based on PCS;
s02, calculating target power, checking upper and lower limits of region frequency or region voltage, and checking upper and lower limits of region power;
and S03, carrying out power distribution on the device models of all the layers according to a power distribution algorithm.
2. The multi-application scenario energy storage power station multi-level AGVC control method according to claim 1, wherein the method comprises the following steps: in the step S01, the hierarchical device model based on PCS is divided into a region, a PCS group and a PCS three-layer device model, wherein the region is composed of a plurality of PCS groups, and the PCS group is composed of a plurality of PCS.
3. The multi-application scenario energy storage power station multi-level AGVC control method according to claim 2, wherein the method comprises the following steps:
the areas are divided according to booster stations or grid-connected points;
the PCS groups are divided according to the positions of buses or boxes or the models of PCS or batteries.
4. A multi-application scenario energy storage power station multi-level AGVC control method according to claim 2 or 3, wherein,
if active control is performed, the step S02 includes the steps of:
s021, judging the target power type, if the target power type is the regional power, calculating the target power considering the loss in the station, wherein the calculating mode is as follows: current regional power-current PCS power + target power; if the power is PCS power, the loss in the station is not considered;
s022, checking whether the upper limit and the lower limit of the regional frequency pass or not, and if not, adjusting the target power; if the power of the detected area passes, the upper limit and the lower limit of the power of the detected area are carried out;
s023, checking whether the upper limit and the lower limit of the regional power pass or not, and if not, adjusting the target power; if so, power distribution is performed.
5. A multi-application scenario energy storage power station multi-level AGVC control method according to claim 2 or 3, wherein,
if reactive power control is performed, the step S02 includes the steps of:
SS021, judge the goal power type, if it is the regional power, calculate and consider the goal power of the intra-station loss, the calculation mode is: current regional power-current PCS power + target power; if the power is PCS power, the loss in the station is not considered;
SS022, checking whether the upper and lower limits of the region voltage pass or not, if not, adjusting the target power; if the power of the detected area passes, the upper limit and the lower limit of the power of the detected area are carried out;
SS023, checking whether the upper and lower limits of the regional power pass or not, and if not, adjusting the target power; if so, power distribution is performed.
6. The multi-application scenario energy storage power station multi-level AGVC control method according to claim 4, wherein, during active control,
the adjustment target power in step S022 specifically includes:
reducing the discharge power if the area frequency is higher than the upper limit, and reducing the charge power if the area frequency is lower than the lower limit;
the adjusting target power in the step S023 specifically includes:
the charging power is reduced if the area power is higher, and the discharging power is reduced if the area power is lower.
7. The multi-application scenario energy storage power station multi-level AGVC control method according to claim 5, wherein, during reactive power control,
the adjusting target power in step SS022 specifically includes:
reducing the capacitive power if the voltage is higher, and reducing the inductive power if the voltage is lower;
the adjusting target power in the step SS023 specifically includes:
the capacitive power is reduced if the area power is higher, and the inductive power is reduced if the area power is lower.
8. A multi-application scenario energy storage power station multi-level AGVC control method according to any of claims 1-3, wherein said power allocation algorithm in step S03 comprises the steps of:
s031, calculating the maximum charge and discharge power;
s032, calculating and sequencing the SOC;
s033, calculating SOC balance coefficient
Figure QLYQS_1
，/>
Figure QLYQS_2
Wherein->
Figure QLYQS_3
For maximum SOC value, +.>
Figure QLYQS_4
For minimum SOC value, +.>
Figure QLYQS_5
For maximum SOC difference between groups, +.>
Figure QLYQS_6
For equalizing target value, +.>
Figure QLYQS_7
；
Calculating the power allocated according to the maximum charge-discharge power
Figure QLYQS_8
And power allocated by SOC balance coefficient +.>
Figure QLYQS_9
Wherein->
Figure QLYQS_10
，
Figure QLYQS_11
Is the total required power;
s034, proportionally distributing according to the maximum charge and discharge power
Figure QLYQS_12
And left unassigned +.>
Figure QLYQS_13
Added to->
Figure QLYQS_14
Obtaining new power;
s035, iteratively allocating and updating the remaining maximum charge-discharge power and the total unallocated power by capacity
Figure QLYQS_15
；
S036, if the total unallocated power
Figure QLYQS_16
If the charge and discharge power is 0 or the maximum charge and discharge power reaches the maximum value, ending the distribution or carrying out the next-stage distribution;
if the power is not distributed
Figure QLYQS_17
If the charge/discharge power is not 0 or the maximum charge/discharge power does not reach the maximum value, the process returns to step S035.
9. A storage medium having a computer program stored thereon, characterized by: the computer program, when executed by a processor, implements the steps of the multi-application scenario energy storage power station multi-level AGVC control method of any of claims 1 to 8.
10. A computer device, characterized by: comprising a storage medium, a processor, and a computer program stored in the storage medium and executable by the processor, which when executed by the processor, performs the steps of the multi-application scenario energy storage power station multi-level AGVC control method according to any of claims 1 to 8.
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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102709906A (en) * 2012-05-14 2012-10-03 南方电网科学研究院有限责任公司 Frequency layering coordination control method suitable for isolated microgrid including diesel generator and battery storage
CN110474301A (en) * 2019-09-04 2019-11-19 国网湖南省电力有限公司 A kind of grid side energy-accumulating power station voltage to frequency guard method
CN111049167A (en) * 2018-10-12 2020-04-21 中国电力科学研究院有限公司 Energy storage system power control method and system
CN111969610A (en) * 2020-07-15 2020-11-20 上海能辉科技股份有限公司 Voltage and power integrated control system based on four-quadrant operating characteristics of energy storage converter
CN112366731A (en) * 2020-11-05 2021-02-12 国能日新科技股份有限公司 Power grid frequency adjusting method, system, server and storage medium
CN112564135A (en) * 2020-12-22 2021-03-26 浙江大学 New energy and energy storage power station group frequency/voltage coordination control method and device
CN114221366A (en) * 2021-12-20 2022-03-22 华中科技大学 Control method and controller for multi-PCS (Power System to Process control) time sequence response of energy storage power station and power station
CN114884130A (en) * 2022-06-07 2022-08-09 国网上海市电力公司 Power distribution network island fusion control system and control method based on multiple intelligent agents
CN115313404A (en) * 2022-07-29 2022-11-08 国电南瑞南京控制系统有限公司 Energy storage power station in-station AVC control method considering multiple reactive power sources
CN115459308A (en) * 2022-08-31 2022-12-09 天津大学 Energy storage system parallel operation layered control method
CN115514101A (en) * 2022-10-21 2022-12-23 上海正泰自动化软件系统有限公司 Power distribution method and device for energy storage power station

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102709906A (en) * 2012-05-14 2012-10-03 南方电网科学研究院有限责任公司 Frequency layering coordination control method suitable for isolated microgrid including diesel generator and battery storage
CN111049167A (en) * 2018-10-12 2020-04-21 中国电力科学研究院有限公司 Energy storage system power control method and system
CN110474301A (en) * 2019-09-04 2019-11-19 国网湖南省电力有限公司 A kind of grid side energy-accumulating power station voltage to frequency guard method
CN111969610A (en) * 2020-07-15 2020-11-20 上海能辉科技股份有限公司 Voltage and power integrated control system based on four-quadrant operating characteristics of energy storage converter
CN112366731A (en) * 2020-11-05 2021-02-12 国能日新科技股份有限公司 Power grid frequency adjusting method, system, server and storage medium
CN112564135A (en) * 2020-12-22 2021-03-26 浙江大学 New energy and energy storage power station group frequency/voltage coordination control method and device
CN114221366A (en) * 2021-12-20 2022-03-22 华中科技大学 Control method and controller for multi-PCS (Power System to Process control) time sequence response of energy storage power station and power station
CN114884130A (en) * 2022-06-07 2022-08-09 国网上海市电力公司 Power distribution network island fusion control system and control method based on multiple intelligent agents
CN115313404A (en) * 2022-07-29 2022-11-08 国电南瑞南京控制系统有限公司 Energy storage power station in-station AVC control method considering multiple reactive power sources
CN115459308A (en) * 2022-08-31 2022-12-09 天津大学 Energy storage system parallel operation layered control method
CN115514101A (en) * 2022-10-21 2022-12-23 上海正泰自动化软件系统有限公司 Power distribution method and device for energy storage power station

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
XIAOHU LIU等: "Coordinated Control of Distributed Energy Storage System With Tap Changer Transformers for Voltage Rise Mitigation Under High Photovoltaic Penetration", 《IEEE TRANSACTIONS ON SMART GRID》 *
洪权等: "电化学储能电站控制系统架构分析及优化探讨", 《湖南电力》 *
郭旭春: "地区电网分级分区电压/无功闭环控制模块的应用", 华东电力, no. 04 *

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