CN109687466B - Method and device for selecting address of power flow router - Google Patents

Method and device for selecting address of power flow router Download PDF

Info

Publication number
CN109687466B
CN109687466B CN201811644761.5A CN201811644761A CN109687466B CN 109687466 B CN109687466 B CN 109687466B CN 201811644761 A CN201811644761 A CN 201811644761A CN 109687466 B CN109687466 B CN 109687466B
Authority
CN
China
Prior art keywords
power flow
bus
power
router
grid network
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.)
Active
Application number
CN201811644761.5A
Other languages
Chinese (zh)
Other versions
CN109687466A (en
Inventor
杨汾艳
盛超
卢启付
黄辉
刘正富
朱良合
骆潘钿
余超耘
郭敬梅
唐酿
王红星
张健
肖磊石
罗向东
高志华
刘正超
熊锋俊
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
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Electric Power Research Institute of 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, Electric Power Research Institute of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN201811644761.5A priority Critical patent/CN109687466B/en
Publication of CN109687466A publication Critical patent/CN109687466A/en
Application granted granted Critical
Publication of CN109687466B publication Critical patent/CN109687466B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
    • G06Q10/06313—Resource planning in a project environment
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Information and communication technology [ICT] specially adapted for implementation of business processes of specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Energy or water supply
    • 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
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

Landscapes

  • Business, Economics & Management (AREA)
  • Human Resources & Organizations (AREA)
  • Engineering & Computer Science (AREA)
  • Economics (AREA)
  • Strategic Management (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Theoretical Computer Science (AREA)
  • General Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Marketing (AREA)
  • General Physics & Mathematics (AREA)
  • Tourism & Hospitality (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Educational Administration (AREA)
  • Water Supply & Treatment (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Development Economics (AREA)
  • Primary Health Care (AREA)
  • Public Health (AREA)
  • Game Theory and Decision Science (AREA)
  • Operations Research (AREA)
  • Quality & Reliability (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The application discloses a method and a device for selecting addresses of a power flow router, wherein the method comprises the following steps: 101. installing power flow routers on all buses of a power grid network to be installed, wherein each power flow router comprises: a plurality of power flow controllers; 102. calculating the corresponding profit of the power grid network to be installed when the power flow router of each bus is installed independently by taking the optimal power flow as a target, and determining the bus with the maximum profit; 103. and judging whether the profit corresponding to the bus with the maximum profit is greater than zero, if so, taking the bus with the maximum profit as an installation bus of the tidal current router of the power grid network to be installed, and solving the technical problem that no relevant research is available for site selection of the existing tidal current router.

Description

Method and device for selecting address of power flow router
Technical Field
The application belongs to the technical field of power flow control, and particularly relates to a method and a device for selecting a site of a power flow router.
Background
In order to solve the control problem of renewable energy and Power grid Power Flow, more scholars at home and abroad propose a concept of Power Flow Controllers (PFC), such as FACTS (Power Flow controllers) devices such as TSC (thyristor switched capacitor), SSSC (direct current synchronous compensator), STATCOM (static synchronous compensator), U Power Flow controllers and the like, can flexibly adjust the Power of a transmission line, can obviously improve the integral transmission capacity of a Power grid, and has the defects of only controlling a single line, limited adjustment capacity and high cost, and the popularization and application of the Power Flow controllers are limited. Therefore, the concept of the Power Flow Router (PFR) should be developed, that is, a Power Flow controller is installed on a plurality of incoming and outgoing lines of a bus, and is integrated with the bus into one device, and the device receives the unified coordination control of the central controller.
The site selection of each part in the power grid network to be installed is the key and difficult work in the planning of the power distribution network, so that the reliability, the economy and the safety of the operation of the whole power grid can be greatly improved by correctly selecting the site of the tidal current router. The existing site selection method mainly uses a multi-scenario planning model, a random power flow technology and a double-layer power transmission network planning model, and although the existing site selection method has various types, the method mainly aims at a power flow controller, and does not develop related research or provide a corresponding algorithm aiming at the site selection problem of a power flow router, so that the installation position of the method lacks technical guidance and theoretical basis, the installation cost is high, and resources cannot be fully utilized.
Disclosure of Invention
In view of this, the present application provides a method and an apparatus for address selection of a tidal current router, which are used for address selection of the tidal current router, and solve the technical problem that there is no relevant research on address selection of the existing tidal current router.
The first aspect of the present application provides a method for selecting an address of a power flow router, including:
101. installing tidal current routers on all buses of a power grid network to be installed, wherein each tidal current router comprises: a plurality of power flow controllers;
102. calculating the corresponding profit of the power grid network to be installed when the power flow router of each bus is installed independently by taking the optimal power flow as a target, and determining the bus with the maximum profit;
103. and judging whether the profit corresponding to the bus with the maximum profit is greater than zero, if so, taking the bus with the maximum profit as an installation bus of the tide router of the power grid network to be installed.
Preferably, step 102 specifically includes:
with the optimal power flow as a target, calculating the benefit of the power grid network to be installed when the power flow router of each bus is installed independently through a benefit calculation formula group;
subtracting the installation cost of installing the power flow router on each bus from the income corresponding to each bus to obtain the corresponding profit of the power grid network to be installed when the power flow router of each bus is installed independently;
among all the buses, the bus with the largest profit is determined.
Preferably, the profit calculation formula group is specifically:
Figure BDA0001931838580000021
wherein f is the maximum transmission power of the power grid network to be installed, i is a bus, and nbNumber of bus bars, PLi,0And QLi,0For installing the basic active power and reactive power, P, of the front bus i of the tidal current routerLiAnd QLiIn order to install the actual active power and reactive power of a bus i after the tidal current router, j is a constant, epsilonτAnd εsIs a non-negative real coefficient, ζsFor the set of branches that are loaded with PFCs,
Figure BDA0001931838580000022
w is a semi-positive definite matrix, W > 0 and rank (W) 1, W VV*，*The conjugate transpose operation of the matrix is shown, V is the voltage magnitude of the power flow controller side,
Figure BDA0001931838580000023
Figure BDA0001931838580000024
is a complex set, E is the number of lines (i, k),
Figure BDA0001931838580000025
are the diagonal elements of the matrix W,
Figure BDA0001931838580000026
are the off-diagonal elements of the matrix W,
Figure BDA0001931838580000027
Figure BDA0001931838580000028
is yikConjugate operation of (a), yikIs the admittance parameter of the line (i, k), N is the busbar set of the network to be installed, omegaiIs a node set of a power flow controller in a power grid network to be installed, p is an average selling price of electricity, ThFor year of load, hour f0The power transmission capacity coefficient when the power flow router is not installed in the power grid network to be installed is the ratio of the maximum transmission power to the basic transmission power, f (u, v) is the functional relation between the power transmission capacity coefficient of the power grid network to be installed and the decision variable,
Figure BDA0001931838580000031
if the decision variable of whether each bus of the power grid network to be installed is the tide router is installed or not is determined, if ui1 represents that a power flow router is installed on a bus i, and the inverse uiWhen the number is 0, the device is not installed,
Figure BDA0001931838580000032
if v is the case, if the power flow controller is installed for the line (i, k)i,jIf 1, the installation is represented, otherwise, the installation is not carried out.
Preferably, step 103 is followed by:
104. respectively and independently stopping each power flow controller of the power flow routers installed on the installation bus, and determining the income reduction amount and the cost saving amount when each power flow controller is stopped independently;
105. and judging the amount of benefit reduction and the amount of cost saving corresponding to all the power flow controllers on the installation bus, and removing the power flow controllers with the benefit reduction smaller than the amount of cost saving.
Preferably, step 105 is followed by:
106. and determining the capacity of each power flow controller in a first power flow router according to a constant volume formula, wherein the first power flow router is the power flow router installed on the installation bus after the step 105 is executed.
Preferably, the volumetric formula is:
Figure RE-GDA0001984130150000033
wherein S isPFCAs the capacity of the power flow controller,
Figure RE-GDA0001984130150000034
as reactive compensation of the bus, SBIs a reference capacity, S1p.uThe series capacity introduced for the series voltage.
A second aspect of the present application provides an address selecting device for a power flow router, including:
the installation unit is used for installing the power flow routers on all buses of the power grid network to be installed, and each power flow router comprises: a plurality of power flow controllers;
the calculation unit is used for calculating corresponding profits of the power grid network to be installed when the flow router of each bus is installed independently by taking the optimal flow as a target, and determining the bus with the maximum profit;
and the judging unit is used for judging whether the profit corresponding to the bus with the maximum profit is greater than zero or not, and if so, taking the bus with the maximum profit as the installation bus of the power flow router of the power grid network to be installed.
Preferably, the calculation unit specifically includes:
the calculation subunit is used for calculating the income of the power grid network to be installed when the load flow router of each bus is installed independently through an income calculation formula group by taking the optimal load flow as a target;
the subtraction subunit is configured to subtract the installation cost of installing the tidal current router on the bus from the profit corresponding to each bus, so as to obtain a corresponding profit of the to-be-installed power grid network when the tidal current router of each bus is installed separately;
and the determining subunit is used for determining the bus with the maximum profit from all the buses.
Preferably, the method further comprises the following steps:
the shutdown unit is used for separately shutting down each power flow controller of the power flow router installed on the installation bus, and determining the profit reduction amount and the cost saving amount when each power flow controller is shut down separately;
and the comparison unit is used for judging the size of the profit reduction amount and the cost saving amount corresponding to all the power flow controllers on the installation bus and removing the power flow controllers with the profit reduction amount smaller than the cost saving amount.
Preferably, the method further comprises the following steps:
and a constant volume unit, configured to determine, according to a constant volume formula, the capacity of each power flow controller in a first power flow router, where the first power flow router is the power flow router installed on the installation bus after the step 105 is executed by the power flow router.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides a method for selecting addresses of a power flow router, which comprises the following steps: 101. installing a power flow router on all buses of a power grid network to be installed, wherein each power flow router comprises: a plurality of power flow controllers; 102. calculating the corresponding profit of the power grid network to be installed when the power flow router of each bus is installed independently by taking the optimal power flow as a target, and determining the bus with the maximum profit; 103. and judging whether the profit corresponding to the bus with the maximum profit is greater than zero, if so, taking the bus with the maximum profit as an installation bus of the tide router of the power grid network to be installed.
According to the method, firstly, the tidal current routers are installed at a plurality of buses of a power grid network to be installed, then profits of the power grid network to be installed when the tidal current routers of all the buses are installed independently are calculated respectively, the bus with the largest profit is determined in all the buses, then whether the profit corresponding to the bus with the largest profit is larger than zero or not is judged, if yes, the bus with the largest profit is used as the tidal current router installation bus of the power grid network to be installed, so that the installation address of the tidal current router is determined, and the technical problem that no relevant research exists in the existing site selection of the tidal current router is solved.
Drawings
Fig. 1 is a schematic flowchart of a first embodiment of an address selection method for a power flow router in an embodiment of the present application;
fig. 2 is a schematic flowchart of a second embodiment of an address selection method for a power flow router in an embodiment of the present application;
fig. 3 is a schematic structural diagram of an address selection device of a power flow router in an embodiment of the present application.
Detailed Description
The embodiment of the application provides a method and a device for selecting a site of a power flow router, which are used for selecting the site of the power flow router and solve the technical problem that no relevant research is available for the site selection of the power flow router in the prior art.
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be derived by a person skilled in the art from the embodiments given in the present application without making any creative effort shall fall within the protection scope of the present application.
Referring to fig. 1, a schematic flow chart of a first embodiment of an address selecting method for a tidal current router in an embodiment of the present application includes:
step 101, installing tidal current routers on all buses of a power grid network to be installed, wherein each tidal current router comprises: a plurality of power flow controllers.
It should be noted that, firstly, a power flow router is installed at each bus on the power grid network to be installed, and it is understood that each power flow router includes a plurality of power flow controllers.
And 102, with the optimal power flow as a target, calculating corresponding profits of the power grid network to be installed when the power flow router of each bus is installed independently, and determining the bus with the maximum profit.
It should be noted that, in the single installation described herein, only one bus is installed with the power flow router, and other buses are not installed with the power flow router, for example, 10 buses are installed with the power flow router, and the profit of the power grid network to be installed when only the power flow router of one bus is installed is judged from the buses 1-10 one by one.
And 103, judging whether the profit corresponding to the bus with the maximum profit is greater than zero, and if so, taking the bus with the maximum profit as an installation bus of the power flow router of the power grid network to be installed.
In the embodiment, the load flow routers are installed at a plurality of buses of the power grid network to be installed, profits of the power grid network to be installed when the load flow routers of the buses are installed independently are calculated respectively, the bus with the largest profit is determined in all the buses, whether the profit corresponding to the bus with the largest profit is larger than zero or not is judged, if yes, the bus with the largest profit is used as the load flow router installation bus of the power grid network to be installed, the installation address of the load flow router is determined, and the technical problem that no relevant research exists in the existing address selection for the load flow router is solved.
The above is a first embodiment of an addressing method for a tidal current router provided in the embodiment of the present application, and the following is a second embodiment of an addressing method for a tidal current router provided in the embodiment of the present application.
Referring to fig. 2, a flowchart of a second embodiment of an address selecting method for a tidal current router in an embodiment of the present application includes:
step 201, installing tidal current routers on all buses of a to-be-installed power grid network, wherein each tidal current router comprises: a plurality of power flow controllers.
And step 202, with the optimal power flow as a target, calculating the benefit of the power grid network to be installed when the power flow router of each bus is installed independently through a benefit calculation formula group.
It should be noted that the profit calculation formula group specifically includes:
Figure BDA0001931838580000061
wherein f is wai' anMaximum transmission power of the grid network, i being the bus and nbNumber of bus bars, PLi,0And QLi,0For installing the basic active power and reactive power, P, of the front bus i of the tidal current routerLiAnd QLiIn order to install the actual active power and reactive power of a bus i after the tidal current router, j is a constant, epsilonτAnd εsIs a non-negative real coefficient, ζsFor the set of branches that are loaded with PFCs,
Figure BDA0001931838580000062
w is a semi-positive definite matrix, W > 0 and rank (W) 1, W VV,*the conjugate transpose operation of the matrix is shown, V is the voltage magnitude of the power flow controller side,
Figure BDA0001931838580000063
Figure BDA0001931838580000064
is a complex set, E is the number of lines (i, k),
Figure BDA0001931838580000065
are the diagonal elements of the matrix W,
Figure BDA0001931838580000066
are the off-diagonal elements of the matrix W,
Figure BDA0001931838580000067
Figure BDA0001931838580000068
is yikConjugate operation of (a), yikIs the admittance parameter of the line (i, k), N is the busbar set of the network to be installed, omegaiIs a node set of a power flow controller in a power grid network to be installed, p is an average selling price of electricity, ThFor year of load, hour f0The power transmission capacity coefficient when no tide router is installed for the power grid network to be installed is the ratio of the maximum transmission power to the basic transmission power, and f (u, v) is the power transmission capacity coefficient and the power grid network to be installedThe functional relationship of the decision variables is such that,
Figure BDA0001931838580000071
if the decision variable of whether each bus of the power grid network to be installed is the tide router is installed or not is determined, if ui1 represents that a power flow router is installed on a bus i, and the inverse uiWhen the number is 0, the device is not installed,
Figure BDA0001931838580000072
if v is the case, if the power flow controller is installed for the line (i, k)i,jIf 1, the installation is represented, otherwise, the installation is not carried out.
It will be appreciated that the above-described,
Figure BDA0001931838580000073
the line (i, k) here is a connecting line between the busbar i and the busbar k,
Figure BDA0001931838580000074
Figure BDA0001931838580000075
is the voltage transformation ratio of the series voltage source,
Figure BDA0001931838580000076
in order to change the ratio of the phase shifter,
Figure BDA0001931838580000077
the voltage of the power flow controller of the line (i, k) close to the bus i side,
Figure BDA0001931838580000078
and 203, subtracting the installation cost of installing the power flow router on each bus from the corresponding profit of each bus to obtain the corresponding profit of the power grid network to be installed when the power flow router of each bus is installed independently.
And step 204, determining the bus with the maximum profit from all buses.
It should be noted that, the manner of determining the bus with the largest profit may be the content described in the above steps in this embodiment, and of course, in consideration of the calculation amount, the method may also be: firstly, determining the profit of independently installing the tidal current routers on each bus, then finding the bus with the maximum profit, and subtracting the installation cost of the tidal current router on the bus from the profit corresponding to the bus, namely, considering the bus as the bus with the maximum profit.
And step 205, judging whether the profit corresponding to the bus with the maximum profit is greater than zero, if so, taking the bus with the maximum profit as an installation bus of the power flow router of the power grid network to be installed.
It should be noted that, when it is determined that the profit corresponding to the bus with the largest profit is greater than 0, the bus with the largest profit is used as the installation bus of the power flow router of the power grid network to be installed, and if not, the bus with the largest profit is determined to be the largest when the power flow router does not need to be installed on the bus, and the existing structure of the power grid network to be installed is kept unchanged.
And step 206, respectively and independently stopping each power flow controller of the power flow routers installed on the installation bus, and determining the profit reduction amount and the cost saving amount when each power flow controller is stopped independently.
It should be noted that, after the installation address of the power flow router is determined in step 205, the structure of the power flow router installed on the installation bus is further optimized in this embodiment, first, each power flow controller of the power flow router installed on the installation bus is separately shut down, and the amount of revenue reduction and the amount of cost reduction when each power flow controller is shut down separately are determined.
And step 207, judging the amount of benefit reduction and the amount of cost saving corresponding to all the power flow controllers on the installation bus, and removing the power flow controllers with the benefit reduction smaller than the amount of cost saving.
It should be noted that the power flow controller with the yield reduction amount smaller than the cost saving amount is regarded as a power flow controller without installation, and the power flow controller of the type in the power flow router installed on the installation bus is removed.
And 208, determining the capacity of each power flow controller in the first power flow router according to a constant volume formula, wherein the first power flow router is the power flow router installed on the installation bus and after the step 105 is executed.
It should be noted that, after removing the power flow controllers with the yield reduction smaller than the cost saving, the first power flow router is obtained, and in this embodiment, the capacity of each power flow controller of the power flow routers installed on the installation bus is also calculated, where the adopted constant volume formula is:
Figure RE-GDA0001984130150000081
wherein S isPFCAs the capacity of the power flow controller,
Figure RE-GDA0001984130150000082
as reactive compensation of the bus, SBIs a reference capacity, S1p.uThe series capacity introduced for the series voltage.
In the embodiment, the load flow routers are installed at a plurality of buses of the power grid network to be installed, profits of the power grid network to be installed when the load flow routers of the buses are installed independently are calculated respectively, the bus with the largest profit is determined in all the buses, whether the profit corresponding to the bus with the largest profit is larger than zero or not is judged, if yes, the bus with the largest profit is used as the load flow router installation bus of the power grid network to be installed, the installation address of the load flow router is determined, and the technical problem that no relevant research exists in the existing address selection for the load flow router is solved.
The above is a second embodiment of the address selecting method for the power flow router provided in the embodiment of the present application, and an embodiment of an address selecting device for the power flow router provided in the embodiment of the present application is shown in fig. 3.
The addressing device of the power flow router provided in the embodiment of the application comprises:
an installation unit 301, configured to install a power flow router on all buses of a power grid network to be installed, where each power flow router includes: a plurality of power flow controllers.
The calculating unit 302 is configured to calculate, with the optimal power flow as a target, profits corresponding to the power grid network to be installed when the power flow router of each bus is installed separately, and determine the bus with the largest profit.
And the judging unit 303 is configured to judge whether the profit corresponding to the bus with the largest profit is greater than zero, and if so, use the bus with the largest profit as an installation bus of the power flow router of the to-be-installed power grid network.
Further, the calculation unit specifically includes:
the calculation subunit is used for calculating the income of the power grid network to be installed when the load flow router of each bus is installed independently through the income calculation formula group by taking the optimal load flow as a target;
the subtraction subunit is used for subtracting the installation cost of installing the power flow router on each bus from the benefit corresponding to each bus to obtain the corresponding benefit of the power grid network to be installed when the power flow router of each bus is installed independently;
and the determining subunit is used for determining the bus with the maximum profit from all the buses.
Further, also includes
The shutdown unit is used for respectively and independently shutting down each power flow controller of the power flow router installed on the installation bus and determining the profit reduction amount and the cost saving amount when each power flow controller is shut down independently;
and the comparison unit is used for judging the size of the profit reduction amount and the cost saving amount corresponding to all the power flow controllers on the installation bus and removing the power flow controllers with the profit reduction amount smaller than the cost saving amount.
Further, still include:
and the constant volume unit is used for determining the capacity of each power flow controller in the first power flow router according to a constant volume formula, and the first power flow router is the power flow router which is installed on the installation bus and triggers the comparison unit.
In the embodiment, the load flow routers are installed at a plurality of buses of the power grid network to be installed, profits of the power grid network to be installed when the load flow routers of the buses are installed independently are calculated respectively, the bus with the largest profit is determined in all the buses, whether the profit corresponding to the bus with the largest profit is larger than zero or not is judged, if yes, the bus with the largest profit is used as the load flow router installation bus of the power grid network to be installed, the installation address of the load flow router is determined, and the technical problem that no relevant research exists in the existing address selection for the load flow router is solved.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the power grid network, the device and the unit to be installed described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and there may be other divisions when the actual implementation is performed, for example, a plurality of units or components may be combined or may be integrated into another network to be installed, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a hardware form, and can also be realized in a software functional unit form.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill 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 in the embodiments of the present application.

Claims (7)

1. A method for selecting an address of a power flow router is characterized by comprising the following steps:
101. installing power flow routers on all buses of a power grid network to be installed, wherein each power flow router comprises: a plurality of power flow controllers;
102. calculating the corresponding profit of the power grid network to be installed when the power flow router of each bus is installed independently by taking the optimal power flow as a target, and determining the bus with the maximum profit;
103. judging whether the profit corresponding to the bus with the maximum profit is greater than zero, if so, taking the bus with the maximum profit as an installation bus of the power flow router of the power grid network to be installed;
step 102 specifically includes:
with the optimal power flow as a target, calculating the benefit of the power grid network to be installed when the power flow router of each bus is installed independently through a benefit calculation formula group;
subtracting the installation cost of installing the power flow router on each bus from the income corresponding to each bus to obtain the corresponding profit of the power grid network to be installed when the power flow router of each bus is installed independently;
determining the bus with the maximum profit from all buses;
the income calculation formula group is specifically as follows:
Figure FDA0003024236430000011
wherein f is the maximum transmission power increase coefficient of the power grid network to be installed, i is a bus, and nbNumber of bus bars, PLi,0And QLi,0For installing the basic active power and reactive power, P, of the front bus i of the tidal current routerLiAnd QLiIn order to install the actual active power and reactive power of the bus i after the power flow router is installed, j is a constant, epsilonτAnd εsIs a non-negative real coefficient, ζsFor the set of branches that are loaded with PFCs,
Figure FDA0003024236430000012
w is a semi-positive definite matrix, W > 0 and rank (W) 1, W VV*，*Represents the conjugate transpose operation of the matrix, V is the voltage vector of the power flow controller side,
Figure FDA0003024236430000013
Figure FDA0003024236430000014
is a complex set, E is the number of lines (i, k),
Figure FDA0003024236430000015
are the diagonal elements of the matrix W,
Figure FDA0003024236430000016
are the off-diagonal elements of the matrix W,
Figure FDA0003024236430000017
Figure FDA0003024236430000018
is yikConjugate operation of (a), yikIs the admittance parameter of the line (i, k), N is the busbar set of the network to be installed, omegaiIs a node set of a power flow controller in a power grid network to be installed, p is an average selling price of electricity, ThFor year of load, hour f0The power transmission capacity coefficient when the power flow router is not installed in the power grid network to be installed is the ratio of the maximum transmission power to the basic transmission power, f (u, v) is the functional relation between the power transmission capacity coefficient of the power grid network to be installed and the decision variable,
Figure FDA0003024236430000021
and if u is the decision variable of whether the power flow router is installed for each bus of the power grid network to be installed or notiIf 1, the power flow router is installed on the bus i, otherwise uiWhen the number is 0, the device is not installed,
Figure FDA0003024236430000022
if v is the case, if the power flow controller is installed for the line (i, k)i,jIf 1, the installation is represented, otherwise, the installation is not performed.
2. The method for addressing a power flow router of claim 1, wherein step 103 is followed by further comprising:
104. respectively and independently stopping each power flow controller of the power flow routers installed on the installation bus, and determining the income reduction amount and the cost saving amount when each power flow controller is stopped independently;
105. and judging the amount of benefit reduction and the amount of cost saving corresponding to all the power flow controllers on the installation bus, and removing the power flow controllers with the benefit reduction smaller than the amount of cost saving.
3. The method of claim 2, further comprising, after step 105:
106. and determining the capacity of each power flow controller in a first power flow router according to a constant volume formula, wherein the first power flow router is the power flow router which is installed on the installation bus and is obtained after the step 105 is executed.
4. The method for locating the power flow router according to claim 3, wherein the constant volume formula is as follows:
Figure FDA0003024236430000023
wherein S isPFCAs the capacity of the power flow controller,
Figure FDA0003024236430000024
as reactive compensation of the bus, SBIs a reference capacity, S1p.uThe series capacity introduced for the series voltage.
5. An address selection device of a power flow router is characterized by comprising:
the installation unit is used for installing the power flow routers on all buses of the power grid network to be installed, and each power flow router comprises: a plurality of power flow controllers;
the calculation unit is used for calculating corresponding profits of the power grid network to be installed when the flow router of each bus is installed independently by taking the optimal flow as a target, and determining the bus with the maximum profit;
the judging unit is used for judging whether the profit corresponding to the bus with the maximum profit is larger than zero or not, and if so, the bus with the maximum profit is used as an installation bus of the power flow router of the power grid network to be installed;
the calculation unit specifically includes:
the calculation subunit is used for calculating the income of the power grid network to be installed when the load flow router of each bus is installed independently through an income calculation formula group by taking the optimal load flow as a target;
the subtraction subunit is configured to subtract the installation cost of installing the power flow router on the bus from the benefit corresponding to each bus, so as to obtain a corresponding profit of the power grid network to be installed when the power flow router of each bus is installed separately;
the determining subunit is used for determining the bus with the maximum profit from all the buses;
the income calculation formula group is specifically as follows:
Figure FDA0003024236430000031
wherein f is the maximum transmission power increase coefficient of the power grid network to be installed, i is a bus, and nbNumber of bus bars, PLi,0And QLi,0For installing the basic active power and reactive power, P, of the front bus i of the tidal current routerLiAnd QLiIn order to install the actual active power and reactive power of the bus i after the power flow router is installed, j is a constant, epsilonτAnd εsIs a non-negative real coefficient, ζsFor the set of branches that are loaded with PFCs,
Figure FDA0003024236430000032
w is a semi-positive definite matrix, W > 0 and rank (W) 1, W VV*The conjugate transpose operation of the matrix is represented, V is a voltage vector of the power flow controller side,
Figure FDA0003024236430000033
Figure FDA0003024236430000034
is a complex set, E is the number of lines (i, k),
Figure FDA0003024236430000035
are the diagonal elements of the matrix W,
Figure FDA0003024236430000036
are the off-diagonal elements of the matrix W,
Figure FDA0003024236430000037
Figure FDA0003024236430000038
is yikConjugate operation of (a), yikIs the admittance parameter of the line (i, k), N is the busbar set of the network to be installed, omegaiIs a node set of a power flow controller in a power grid network to be installed, p is an average selling price of electricity, ThFor year of load, hour f0The power transmission capacity coefficient when no tide router is installed for the power grid network to be installed is the ratio of the maximum transmission power to the basic transmission power, f (u),v) is the functional relation between the power transmission capacity coefficient of the power grid network to be installed and the decision variable,
Figure FDA0003024236430000039
and if u is the decision variable of whether the power flow router is installed for each bus of the power grid network to be installed or notiIf 1, the power flow router is installed on the bus i, otherwise uiWhen the number is 0, the device is not installed,
Figure FDA0003024236430000041
if v is the case, if the power flow controller is installed for the line (i, k)i,jIf 1, the installation is represented, otherwise, the installation is not performed.
6. The addressing mechanism for a power flow router of claim 5, further comprising
The shutdown unit is used for separately shutting down each power flow controller of the power flow router installed on the installation bus, and determining the profit reduction amount and the cost saving amount when each power flow controller is shut down separately;
and the comparison unit is used for judging the amount of the benefit reduction and the amount of the cost saving corresponding to all the power flow controllers on the installation bus, and removing the power flow controllers with the benefit reduction smaller than the amount of the cost saving.
7. The addressing device of the power flow router of claim 6, further comprising:
and the constant volume unit is used for determining the capacity of each power flow controller in the first power flow router according to a constant volume formula, and the first power flow router is the power flow router which is installed on the installation bus and triggers the comparison unit.
CN201811644761.5A 2018-12-30 2018-12-30 Method and device for selecting address of power flow router Active CN109687466B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811644761.5A CN109687466B (en) 2018-12-30 2018-12-30 Method and device for selecting address of power flow router

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811644761.5A CN109687466B (en) 2018-12-30 2018-12-30 Method and device for selecting address of power flow router

Publications (2)

Publication Number Publication Date
CN109687466A CN109687466A (en) 2019-04-26
CN109687466B true CN109687466B (en) 2021-06-08

Family

ID=66191447

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811644761.5A Active CN109687466B (en) 2018-12-30 2018-12-30 Method and device for selecting address of power flow router

Country Status (1)

Country Link
CN (1) CN109687466B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110247400B (en) * 2019-05-09 2022-01-25 广东电网有限责任公司 Planning method for power flow router
CN111327079B (en) * 2020-04-07 2021-07-30 广东电网有限责任公司电力科学研究院 Power system with power flow router and scheduling method thereof
CN111967740B (en) * 2020-08-03 2024-02-20 国网天津市电力公司 Operation ticket safety checking system and method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103138255A (en) * 2011-11-25 2013-06-05 沈阳工业大学 Decomposition calculating method of optimal power flow of power system with unified power flow controller
CN105226668A (en) * 2015-08-18 2016-01-06 国家电网公司 A kind of addressing for UPFC and capacity collocation method
CN105703370A (en) * 2016-03-08 2016-06-22 全球能源互联网研究院 Series compensation and transverter-combined unified power flow controller
CN108206538A (en) * 2018-01-10 2018-06-26 国网福建省电力有限公司 A kind of distributed generation resource Optimizing Site Selection constant volume planing method for considering that network loss is optimal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8874277B2 (en) * 2009-09-15 2014-10-28 Denis Kouroussis Smart-grid adaptive power management method and system with power factor optimization and total harmonic distortion reduction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103138255A (en) * 2011-11-25 2013-06-05 沈阳工业大学 Decomposition calculating method of optimal power flow of power system with unified power flow controller
CN105226668A (en) * 2015-08-18 2016-01-06 国家电网公司 A kind of addressing for UPFC and capacity collocation method
CN105703370A (en) * 2016-03-08 2016-06-22 全球能源互联网研究院 Series compensation and transverter-combined unified power flow controller
CN108206538A (en) * 2018-01-10 2018-06-26 国网福建省电力有限公司 A kind of distributed generation resource Optimizing Site Selection constant volume planing method for considering that network loss is optimal

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
基于多指标效能分析的分布式潮流控制器选址定容优化策略;李顺等;《电力系统自动化》;20170910;第41卷(第17期);第60-65及85页 *

Also Published As

Publication number Publication date
CN109687466A (en) 2019-04-26

Similar Documents

Publication Publication Date Title
Wang et al. Coordination of multiple energy storage units in a low-voltage distribution network
Xiao et al. Available transfer capability enhancement using FACTS devices
CN109687466B (en) Method and device for selecting address of power flow router
Zhao et al. Tri-level robust planning-operation co-optimization of distributed energy storage in distribution networks with high PV penetration
Abraham et al. Load following in a bilateral market with local controllers
Chen et al. A water mass method and its application to integrated heat and electricity dispatch considering thermal inertias
EP2891221B1 (en) Power distribution system loss reduction with distributed energy resource control
Denholm et al. Impact of flexibility options on grid economic carrying capacity of solar and wind: three case studies
CN109659973B (en) Distributed power supply planning method based on improved direct current power flow algorithm
EP2997387A1 (en) Methods of computing steady-state voltage stability margins of power systems
CN103020853A (en) Method for checking short-term trade plan safety
Zhang et al. Distributed economic MPC for LFC of multi-area power system with wind power plants in power market environment
CN110264110B (en) Energy storage power station site selection and volume fixing method based on multiple application scenes of power distribution network
CN115481856A (en) Comprehensive energy system multi-scale scheduling method and system considering comprehensive demand response
Xiang et al. Reactive coordinated optimal operation of distributed wind generation
Habib et al. Optimized management of reactive power reserves of transmission grid-connected photovoltaic plants driven by an IoT solution
Khorram-Nia et al. A novel stochastic framework for the optimal placement and sizing of distribution static compensator
Ebrahimi et al. A conditional value at risk based stochastic allocation of SOP in distribution networks
Janjic et al. Power quality requirements for the smart grid design
Salimon et al. Cost-Benefit of Optimal Allocation of DSTATCOM in Distribution Networks Using Ant-Lion Optimization Algorithm
Sheikhzadehbaboli et al. Frequency control in standalone renewable based-microgrids using steady state load shedding considering droop characteristic
Tapia‐Tinoco et al. Hardware structures, control strategies, and applications of electric springs: a state‐of‐the‐art review
Ghaedi et al. Optimal placement and sizing of TCSC for improving the voltage and economic indices of system with stochastic load model
Yorino et al. Novel agent-based voltage control methods for PV prosumers using nodal price
Hülsmann Evaluation of two distribution grids in terms of PV penetration limits and effectiveness of reactive power controls

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant