CN111884228A - UPFC control strategy considering regional renewable energy consumption - Google Patents

UPFC control strategy considering regional renewable energy consumption Download PDF

Info

Publication number
CN111884228A
CN111884228A CN202010760711.4A CN202010760711A CN111884228A CN 111884228 A CN111884228 A CN 111884228A CN 202010760711 A CN202010760711 A CN 202010760711A CN 111884228 A CN111884228 A CN 111884228A
Authority
CN
China
Prior art keywords
upfc
current
line
control strategy
renewable energy
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
Application number
CN202010760711.4A
Other languages
Chinese (zh)
Inventor
李作红
彭勃
徐蔚
余梦泽
金楚
彭穗
许亮
卢洵
余浩
张蓓
刘若平
龚贤夫
宫大千
彭虹桥
张伊宁
郑敏嘉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN202010760711.4A priority Critical patent/CN111884228A/en
Publication of CN111884228A publication Critical patent/CN111884228A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
    • H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
    • 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
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/466—Scheduling the operation of the generators, e.g. connecting or disconnecting generators to meet a given demand
    • 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]

Abstract

The utility model provides a UPFC control strategy of considering regional renewable energy consumption, includes: acquiring real-time data of a system during safe operation; establishing an objective function; solving a feasible domain of the objective function; solving the objective function in the feasible region; performing feedback control on the system loss according to the solution of the objective function; the control strategy of the application enables the established objective function and constraint conditions to be closer to the current system operation condition, thereby maximally reducing the network loss and the waste of renewable resources and reducing the operation cost of the power grid; the optimal operation point based on the OPF algorithm is subjected to feedback control after being calculated, the advantages of small calculated amount and high control speed of a dynamic control strategy and the advantage of multi-target collaborative optimization based on the operation strategy of the OPF algorithm are combined, the requirements of loss control, voltage out-of-limit control and line overload control in the operation of accessing large-scale renewable resources into a power grid can be met simultaneously, and the consumption capacity of renewable energy resources of a regional power grid in safe and economic operation is improved.

Description

UPFC control strategy considering regional renewable energy consumption
Technical Field
The invention belongs to the field of UPFC control of a power system, and particularly relates to a UPFC control strategy considering regional renewable energy consumption.
Background
In recent years, China develops rapidly in the field of renewable energy sources such as wind power, photovoltaic and the like, however, the fluctuation and uncertainty of power grid output greatly limit the new energy grid-connected absorption capacity, so that the problem of high wind abandon and light abandon in the 'three north' area is caused, and the healthy development of the renewable energy sources is seriously hindered. Besides the factors of peak regulation capacity, insufficient market space consumption and the like, the limitation of the transmission capacity of the power grid is one of the key factors for restricting the consumption of renewable energy sources.
The Unified Power Flow Controller (UPFC) has a plurality of control functions, can simultaneously realize voltage out-of-limit control, line overload control and loss control, provides an effective means for solving the problems encountered in the operation of large-scale renewable energy sources accessed into a Power grid, can reduce the operation difficulty of a high-proportion renewable energy source Power grid, and improves the capacity of the Power grid for absorbing the renewable energy sources.
At present, two approaches are generally used for solving the problem of accessing the renewable energy source into the power grid by using the UPFC: the system comprises a real-time dynamic control strategy and an operation strategy based on an Optimal Power Flow (OPF) algorithm, wherein the real-time dynamic control strategy realizes quick and effective dynamic control by mostly utilizing feedback control, and the control target of the real-time dynamic control strategy is usually single and fixed. The operation strategy based on the OPF algorithm can realize the cooperative optimization of a plurality of control targets with larger coupling degrees and operation parameters, but the calculated amount is greatly influenced by the scale of the system, the influence of the generated energy and the load fluctuation of renewable energy sources is considered, the calculation process is more complicated, and the difficulty of on-line calculation in the operation of a power grid is higher.
Disclosure of Invention
Based on the above, the invention aims to provide a UPFC control strategy considering regional renewable energy consumption so as to improve the renewable energy consumption capability of a regional power grid under safe and economic operation.
The invention relates to a UPFC control strategy considering regional renewable energy consumption, which comprises the following steps:
acquiring real-time data of a system in safe operation to determine constraint conditions;
establishing an objective function that minimizes system network loss
Figure BDA0002613001460000021
Wherein
Figure BDA0002613001460000022
Is the optimal operation point when the system network loss is minimum and meets the constraint conditions including voltage allowable operation range, line load rate constraint and UPFC device capacity constraint, delta ILIs composed of
Figure BDA0002613001460000023
The amplitude of (d);
in calculating an objective function
Figure BDA0002613001460000024
The feasible domain of (2) and solving the solution of the objective function in the feasible domain;
and acquiring a correction signal according to the solution of the objective function, superposing the correction signal on the dynamic controller, and performing feedback control on the line current flowing into the UPFC to enable the system to operate at an optimal operation point.
Further, the feasible domain is
Figure BDA0002613001460000025
Further, acquiring real-time data of the system during safe operation to determine the constraint condition comprises:
obtaining measured values of a system
Figure BDA0002613001460000026
And
Figure BDA0002613001460000027
using the formula
Figure BDA0002613001460000028
And
Figure BDA0002613001460000029
computing
Figure BDA00026130014600000210
And
Figure BDA00026130014600000211
according to
Figure BDA00026130014600000212
And
Figure BDA00026130014600000213
the constraint condition is determined and the constraint condition is determined,
wherein
Figure BDA00026130014600000214
Is the current of the line k and,
Figure BDA00026130014600000215
is the bus voltage on the parallel side of the UPFC,
Figure BDA00026130014600000216
the current of line k before installation for the UPFC,
Figure BDA00026130014600000217
bus voltage A 'of a UPFC front bus'kThe influence factor of the change of the injection current on the transmission line current for the UPFC is only related to the grid structure parameter, ZkIs line impedance, ΛnFor forming a line set with a designated directional path, the designated directional path can be any path with the starting point of UPFC parallel side line bus and the end point of line k; sgnkkSet of lines for directed path ΛnThe direction identifiers of the other lines except the line assigned with the directional path are
Figure BDA00026130014600000226
In the same direction as the assigned directional path, Sgnkk1, the reverse direction is Sgnkk＝-1。
Further, the voltage allowable operation range is
Figure BDA00026130014600000218
k 1,2,.. said, m, wherein a ″ "kIs a series current
Figure BDA00026130014600000220
And parallel current
Figure BDA00026130014600000221
Variation of (2) to a transmission line current
Figure BDA00026130014600000222
Influence factor of, Vk,min，Vk,maxRespectively the lower limit and the upper limit of the allowable operation range of the bus voltage,
Figure BDA00026130014600000223
the voltage of the bus before installation for the UPFC.
Further, the line load rate is constrained to
Figure BDA00026130014600000224
k＝2,3,...,n，Ik，limitFor the thermally stable limit of the line k current,
Figure BDA00026130014600000225
current of line k, A 'before UPFC installation'kThe influence factor of the change of the injection current on the transmission line current for the UPFC is only related to the grid structure parameters.
Further, the UPFC device capacity is constrained to
Figure BDA0002613001460000031
Wherein
Figure BDA0002613001460000032
Is the output voltage of the series side inverter,
Figure BDA0002613001460000033
is line current, PdcIs the amount of active power exchange between the series-parallel converters, VseR,IR,PdcRThe rated voltage, the rated current and the rated power of the direct current side of the UPFC converter are respectively.
Further, the control strategy further comprises:
and when the solution of the target function cannot be obtained in the feasible domain, relaxing the constraint condition and recalculating the feasible domain of the target function.
Further, relaxing the constraints includes:
and performing upper limit increasing and lower limit decreasing treatment on the voltage allowable operation range.
Further, relaxing the constraint further includes:
increasing the thermally stable limit of line k current Ik，limit。
Further, relaxing the constraint further includes:
increase rated voltage, rated current and direct current side rated power V of UPFC transverterseR,IR,PdcR。
According to the technical scheme, the invention has the following beneficial effects:
according to the UPFC control strategy considering regional renewable energy consumption, real-time data during safe operation of a system are considered, so that the established objective function and constraint conditions are closer to the current system operation condition, the implemented control strategy provides a more powerful reference for a real-time scheduling plan of a power grid, the network loss and the waste of renewable resources are reduced to the maximum extent, and the power grid operation cost is reduced; the optimal operation point based on the OPF algorithm is subjected to feedback control after being calculated, the advantages of small calculated amount and high control speed of a dynamic control strategy and the advantage of multi-target collaborative optimization based on the operation strategy of the OPF algorithm are combined, the requirements of loss control, voltage out-of-limit control and line overload control in the operation of accessing large-scale renewable resources into a power grid can be met simultaneously, and the consumption capacity of renewable energy resources of a regional power grid in safe and economic operation is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 UPFC control strategy implementation flow diagram considering regional renewable energy consumption in one embodiment of the invention
FIG. 2 is a schematic diagram of a UPFC access power grid system architecture according to another embodiment of the present invention
FIG. 3 is a schematic diagram of a UPFC circuit loss reduction strategy according to another embodiment of the present invention
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the embodiment provides a UPFC control strategy considering regional renewable energy consumption, and the specific implementation method includes:
acquiring real-time data of a system in safe operation to determine constraint conditions;
establishing an objective function that minimizes system network loss
Figure BDA0002613001460000041
Wherein
Figure BDA0002613001460000042
Is the optimal operation point when the system network loss is minimum and meets the constraint conditions including voltage allowable operation range, line load rate constraint and UPFC device capacity constraint, delta ILIs composed of
Figure BDA0002613001460000043
The amplitude of (d);
calculating a feasible domain of the target function according to the constraint condition, and solving the solution of the target function in the feasible domain;
and acquiring a correction signal according to the solution of the objective function, superposing the correction signal on the dynamic controller, and performing feedback control on the line current flowing into the UPFC to enable the system to operate at an optimal operation point.
The real-time data of this embodiment includes data such as system operation parameters and device real-time operation states provided by a power grid real-time monitoring device (such as a synchronous phase measurement unit PMU), an SCADA monitoring system, a scheduling automation system EMS, a power grid scheduling information management system OMS, and the like.
Referring to fig. 2 and fig. 3, another embodiment of the present invention is described below with reference to a specific power grid architecture, after the UPFC is connected to the renewable energy power grid system in a large scale, the loss reduction of the power grid is performed in consideration of the safe and stable operation constraints, so as to improve the renewable energy consumption capability of the system.
The power grid architecture after the UPFC is accessed into the system is shown in FIG. 2, and it is assumed that an area contains m nodes and n lines, and the voltage of a bus is
Figure BDA0002613001460000044
The current of line k is
Figure BDA0002613001460000045
Impedance of Zk＝Rk+jXk(ii) a Injection nodes of a series side converter (converter 2) in the UPFC are numbered as 1 and 2;
Figure BDA0002613001460000046
current flowing into the UPFC installation line;
Figure BDA0002613001460000051
the output voltage of the series side converter.
The load and the renewable energy accessed into the system are equivalent to a current source by calculating the network loss, and the network loss of the system is
Figure BDA0002613001460000052
Minimum grid loss operating point for unconfined deviation of UPFC installation line current
Figure BDA0002613001460000053
Time, total network loss increase Δ PLossIs composed of
Figure BDA0002613001460000054
Wherein Δ ILIs composed of
Figure BDA0002613001460000055
Amplitude of (1), Δ ILxIs composed of
Figure BDA0002613001460000056
Real part of, Δ ILyIs composed of
Figure BDA0002613001460000057
An imaginary part of (d); rAllIs the system equivalent impedance.
The method can determine to search the minimum amplitude value meeting the safe and stable operation constraint in the calculation process of the total network loss increment
Figure BDA0002613001460000058
The optimal operation point with the minimum loss of the transmission line can be determined, and the current at the optimal operation point is expressed as
Figure BDA0002613001460000059
Wherein
Figure BDA00026130014600000510
Represents the line current after the UPFC has been switched into the system,
Figure BDA00026130014600000511
indicating the line current before the UPFC is switched into the system.
And determining the safe and stable operation of the system
Figure BDA00026130014600000512
The following constraints need to be considered:
(1) voltage allowed operating range:
Figure BDA00026130014600000513
wherein the content of the first and second substances,
Figure BDA00026130014600000514
is a side current of series connection
Figure BDA00026130014600000515
And parallel side current
Figure BDA00026130014600000516
Varying the current to the transmission line
Figure BDA00026130014600000517
Influence factor of, Vk,min，Vk,maxRespectively the lower limit and the upper limit of the allowable operation range of the bus voltage,
Figure BDA00026130014600000518
the bus voltage before installation of the UPFC;
(2) and (3) line load rate constraint:
Figure BDA00026130014600000519
Ik，limitfor the thermally stable limit of the line k current,
Figure BDA00026130014600000520
current of line k, A 'before UPFC installation'kThe influence factor of the change of the injection current of the UPFC on the current of the transmission line is only related to the parameters of the grid structure;
(3) capacity constraint of UPFC device:
operating parameters of UPFC
Figure BDA00026130014600000521
And
Figure BDA00026130014600000522
it is shown that, as shown in FIG. 2, the output voltage of the series side converter is
Figure BDA00026130014600000523
Wherein
Figure BDA00026130014600000524
The terminal voltage of line node 1 is accessed for the series side converter,
Figure BDA00026130014600000525
the terminal voltage of a line node 2 is accessed for the series side converter; the active power exchange amount between the current converters on the two sides of the series-parallel connection is
Figure BDA00026130014600000526
Figure BDA00026130014600000527
Is composed of
Figure BDA00026130014600000528
So that the capacity of the UPFC device is constrained to
Figure BDA0002613001460000061
VseR,IR,PdcRThe rated voltage, the rated current and the rated power of the direct current side of the UPFC converter are respectively.
The problem of minimum loss is converted into the OPF problem, and the objective function is
Figure BDA0002613001460000062
The objective function established in the OPF problem now no longer contains complex trend equations.
Solving the OPF problem:
step 1: acquiring data such as system operation parameters and equipment real-time operation states provided by power grid real-time monitoring equipment (such as a synchronous Phase Measurement Unit (PMU)), an SCADA (supervisory control and data acquisition) monitoring system, an EMS (scheduling automation system), an OMS (management system) and the like, and determining the limit value of a constraint condition;
step 2: obtaining measured values of a system
Figure BDA0002613001460000063
And
Figure BDA0002613001460000064
using the formula
Figure BDA0002613001460000065
And
Figure BDA0002613001460000066
computing
Figure BDA0002613001460000067
And
Figure BDA0002613001460000068
according to
Figure BDA0002613001460000069
And
Figure BDA00026130014600000610
the constraint condition is determined and the constraint condition is determined,
Figure BDA00026130014600000611
for bus voltage on the parallel side of UPFC, ΛnFor forming a line set with a designated directional path, the designated directional path can be any path with the starting point of UPFC parallel side line bus and the end point of line k; sgnkkSet of lines for directed path ΛnThe direction identifiers of the other lines except the line assigned with the directional path are
Figure BDA00026130014600000612
In the same direction as the assigned directional path, Sgnkk1, the reverse direction is Sgnkk＝-1；
And step 3: in calculating an objective function
Figure BDA00026130014600000613
The feasible fields of (1):
Figure BDA00026130014600000614
and 4, step 4: solving the OPF problem in the feasible region, and if the OPF problem cannot be solved in the feasible region, relaxing the constraint conditions, such as increasing the upper limit V of the voltage operation rangek,maxLower limit V of voltage operation rangek,min(ii) a Increasing thermal stabilization of line k currentQuota Ik，limit(ii) a Increase rated voltage, rated current and direct current side rated power V of UPFC transverterseR,IR,PdcRAnd returning to the step 3 to recalculate the feasible region.
As shown in FIG. 3, IL,set＝ILx,set+jILy,setInstallation of line current set point, I, for a given UPFCL,ref＝ILx,ref+jILy,refThe UPFC line current command value generated for the loss reduction strategy implemented in this embodiment is subjected to coordinate transformation to generate a UPFC series converter current vector control module command value. In order to simultaneously meet the requirements of loss control, voltage out-of-limit control and line overload control in the operation of a large-scale renewable energy power grid, the correction signal obtained by calculating the OPF (optical power factor)
Figure BDA00026130014600000615
Superimposed on the dynamic controller by pairs ILx、ILyMay feedback the difference PA、PBAnd controlling to 0 to enable the system to operate at the minimum network loss operating point under the constraint of safe and stable operation.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A UPFC control strategy that considers regional renewable energy consumption, comprising:
acquiring real-time data of a system in safe operation to determine constraint conditions;
establishing an objective function that minimizes system network loss
Figure FDA0002613001450000011
Wherein
Figure FDA0002613001450000012
Representing the optimal operation point when the system network loss is minimum, and meeting the constraint conditions including the voltage allowable operation range, the line load rate constraint and the UPFC device capacity constraint, delta ILIs composed of
Figure FDA0002613001450000013
The amplitude of (d);
in calculating an objective function
Figure FDA0002613001450000014
In the feasible region, solving the solution of the objective function in the feasible region;
and acquiring a correction signal according to the solution of the objective function, superposing the correction signal on a dynamic controller, and performing feedback control on the line current flowing into the UPFC to enable the system to operate at an optimal operating point.
2. The UPFC control strategy taking into account regional renewable energy consumption of claim 1, wherein the feasible domain is
Figure FDA0002613001450000015
3. The UPFC control strategy according to claim 1, wherein the obtaining real-time data of the system during safe operation to determine constraints comprises:
obtaining measured values of a system
Figure FDA0002613001450000016
And
Figure FDA0002613001450000017
using the formula
Figure FDA0002613001450000018
And
Figure FDA0002613001450000019
computing
Figure FDA00026130014500000110
And
Figure FDA00026130014500000111
according to
Figure FDA00026130014500000112
And
Figure FDA00026130014500000113
the constraint condition is determined and the constraint condition is determined,
wherein
Figure FDA00026130014500000114
Is the current of the line k and,
Figure FDA00026130014500000115
is the bus voltage on the parallel side of the UPFC,
Figure FDA00026130014500000116
the current of line k before installation for the UPFC,
Figure FDA00026130014500000117
bus voltage A 'of a UPFC front bus'kThe influence factor of the change of the injection current on the transmission line current for the UPFC is only related to the grid structure parameter, ZkIs line impedance, ΛnFor forming a line set with a designated directional path, the designated directional path can be any path with the starting point of UPFC parallel side line bus and the end point of line k; sgnkkSet of lines for directed path ΛnThe direction identifiers of the other lines except the line assigned with the directional path are
Figure FDA00026130014500000118
In the same direction as the assigned directional path, Sgnkk1, the reverse direction is Sgnkk＝-1。
4. The UPFC control strategy taking into account regional renewable energy consumption of claim 1, wherein the voltage allowed operating range is
Figure FDA00026130014500000119
Wherein A ″)kIs a series current
Figure FDA00026130014500000120
And parallel current
Figure FDA00026130014500000121
Variation of (2) to a transmission line current
Figure FDA00026130014500000122
Influence factor of, Vk,min，Vk,maxRespectively the lower limit and the upper limit of the allowable operation range of the bus voltage,
Figure FDA00026130014500000123
the voltage of the bus before installation for the UPFC.
5. The UPFC control strategy taking into account regional renewable energy consumption of claim 1, wherein the line load rate constraints are
Figure FDA0002613001450000021
Ik，limitFor the thermally stable limit of the line k current,
Figure FDA0002613001450000022
current of line k, A 'before UPFC installation'kThe influence factor of the change of the injection current on the transmission line current for the UPFC is only related to the grid structure parameters.
6. The UPFC control strategy considering regional renewable energy consumption of claim 1, wherein the UPFC device capacity constraint is
Figure FDA0002613001450000023
Wherein
Figure FDA0002613001450000024
Is the output voltage of the series side inverter,
Figure FDA0002613001450000025
is line current, PdcIs the amount of active power exchange between the series-parallel converters, VseR,IR,PdcRThe rated voltage, the rated current and the rated power of the direct current side of the UPFC converter are respectively.
7. The UPFC control strategy considering regional renewable energy consumption of any one of claims 1-6, further comprising:
and when the solution of the target function cannot be obtained in the feasible domain, relaxing the constraint condition and recalculating the feasible domain of the target function.
8. The UPFC control strategy according to claim 7, wherein the relaxed constraints include:
and performing upper limit increasing and lower limit decreasing treatment on the voltage allowable operation range.
9. The UPFC control strategy that considers regional renewable energy consumption according to claim 7, wherein the relaxation constraint further comprises:
increasing the thermally stable limit of line k current Ik，limit。
10. The UPFC control strategy that considers regional renewable energy consumption according to claim 7, wherein the relaxation constraint further comprises:
increase rated voltage, rated current and direct current side rated power V of UPFC transverterseR,IR,PdcR。
CN202010760711.4A 2020-07-31 2020-07-31 UPFC control strategy considering regional renewable energy consumption Pending CN111884228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010760711.4A CN111884228A (en) 2020-07-31 2020-07-31 UPFC control strategy considering regional renewable energy consumption

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010760711.4A CN111884228A (en) 2020-07-31 2020-07-31 UPFC control strategy considering regional renewable energy consumption

Publications (1)

Publication Number Publication Date
CN111884228A true CN111884228A (en) 2020-11-03

Family

ID=73205004

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010760711.4A Pending CN111884228A (en) 2020-07-31 2020-07-31 UPFC control strategy considering regional renewable energy consumption

Country Status (1)

Country Link
CN (1) CN111884228A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105552916A (en) * 2015-12-17 2016-05-04 江苏省电力公司电力经济技术研究院 UPFC (unified power flow controller) system-level control method with circuit power out-of-limit control function
CN107482624A (en) * 2017-08-11 2017-12-15 国网江苏省电力公司经济技术研究院 A kind of grid loss control strategy based on UPFC
WO2018098672A1 (en) * 2016-11-30 2018-06-07 国网江苏省电力公司电力科学研究院 New unified power flow controller and control method therefor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105552916A (en) * 2015-12-17 2016-05-04 江苏省电力公司电力经济技术研究院 UPFC (unified power flow controller) system-level control method with circuit power out-of-limit control function
WO2018098672A1 (en) * 2016-11-30 2018-06-07 国网江苏省电力公司电力科学研究院 New unified power flow controller and control method therefor
CN107482624A (en) * 2017-08-11 2017-12-15 国网江苏省电力公司经济技术研究院 A kind of grid loss control strategy based on UPFC

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
宋鹏程: "含统一潮流控制器电力系统的控制与优化相关问题研究", 《中国优秀博士学位论文全文数据库（电子期刊） 工程科技II辑》 *

Similar Documents

Publication Publication Date Title
CN104135030B (en) Flexible island grid-connection control device and method for smart power grids
CN110176790B (en) Power control method and system of new energy power station with fast frequency response
CN106786485A (en) For the mains ripple suppressing method of direct-current grid under unbalanced load
CN103606957A (en) Design for multifunctional photovoltaic grid-connected control method
CN109617147B (en) Power electronic transformer operation strategy optimization combination method
CN111668867A (en) Passive sliding mode control method for wind power plant through VSC-HVDC system grid connection
CN109904873A (en) Hybrid energy-storing control strategy based on model prediction
CN103560533B (en) The method and system of the level and smooth wind light generation fluctuation of energy-accumulating power station are controlled based on rate of change
CN110350538B (en) Micro-grid coordination control method based on active demand side response
CN108521146B (en) AC/DC power distribution network area stability control device and control method
CN115860372A (en) Double-time-scale energy management method and device for direct-current power distribution network
CN111884228A (en) UPFC control strategy considering regional renewable energy consumption
CN112087000B (en) Photovoltaic flexible loop closing device and operation control method
Deng et al. Coordinated control and application of multi-terminal DC distribution system
Mi et al. The novel multiagent distributed SOC balancing strategy for energy storage system in DC microgrid without droop control
CN110611335B (en) Method and device for considering joint scheduling of power system and information system
Lin et al. Coordinated operation of energy router with distributed devices
Jiang et al. Coordinated control strategy for microgrid in grid-connected and islanded operation
Zhang et al. A strategy of battery energy storage system coordinated with converter stations for smoothing power fluctuations of flexible DC distribution system
Hao et al. Research on control strategy of PV-energy storage system connected to low voltage distribution network
Gao et al. Research on energy micro grid control system based on the structure of FREEDM
Guo et al. Overview of improved droop control methods of hybrid AC/DC microgrid interlinking converter
Chen et al. Centralization-distributed Control Strategy for Medium and Low Voltage AC/DC Hybrid Distribution Network
Chen et al. Research on Grid-Connected Model of Distributed Generation Based on Colored Petri Net
Sun et al. Distributed energy storage aggregator for power system frequency control

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
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20201103