CN108011404B - Power system coordination control method under fault occurrence condition - Google Patents

Power system coordination control method under fault occurrence condition Download PDF

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CN108011404B
CN108011404B CN201711306778.5A CN201711306778A CN108011404B CN 108011404 B CN108011404 B CN 108011404B CN 201711306778 A CN201711306778 A CN 201711306778A CN 108011404 B CN108011404 B CN 108011404B
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generator set
power
output
load
node
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CN108011404A (en
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张群
祁万春
赵宏大
黄成辰
吴晨
诸晓骏
储真荣
吴传申
范波
田月华
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State Grid Corp of China SGCC
Southeast University
Economic and Technological Research Institute of State Grid Jiangsu Electric Power Co Ltd
China Power Engineering Consulting Group East China Electric Power Design Institute Co Ltd
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State Grid Corp of China SGCC
Southeast University
Economic and Technological Research Institute of State Grid Jiangsu Electric Power Co Ltd
China Power Engineering Consulting Group East China Electric Power Design Institute 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
    • H02J3/38—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
    • H02J3/48—Controlling the sharing of the in-phase component
    • 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
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • H02J3/383—
    • H02J3/386—
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

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Abstract

The invention discloses a power system coordination control method under a fault occurrence condition, which is used for ensuring the safety and the optimal economic benefit of a power grid when a fault occurs in a power system. The coordination control method of the power system under the condition of the fault divides coordination coping control under the condition of the fault of the power grid into the following four modes: and adjusting the output of a conventional generator set, the wind and light abandoning of a distributed generator set, the interruptible load and the load shedding, and applying four coordination control modes to the fault regulation of the power system by combining the economical efficiency of the power system for fault repair. The coordination control method can provide a basis for safe, stable, high-quality and economic operation of the power system.

Description

Power system coordination control method under fault occurrence condition
Technical Field
The invention relates to the technical field of power system planning and control, in particular to a power system coordination control method under the condition of a fault.
Background
With the gradual expansion of the scale of the power system and the incorporation of more and more distributed generator sets into the power system, the degree of influence on the system when the power system fails is increased, so that it is more and more important to solve the problem of failure occurring in the system.
There are many ways to resolve faults occurring in the power system, such as adjusting the output of a conventional generator set, adjusting the output of a distributed generator set, abandoning wind and light, adjusting the size of interruptible load, and performing load shedding operation on the conventional load in the system. The above operations can respond to the fault occurring in the system quickly, and can solve the fault problem safely and reliably.
However, during the operation of the power system, not only certain requirements on safety and reliability are put forward, but also higher and higher requirements on economy are put forward. The traditional method for solving the fault problem of the power system under the condition of the fault does not put too much energy on the requirement of the system on the economy, and the provided method for coordinately controlling the power system under the condition of the fault further divides measures for solving the fault problem into four ways on the basis of considering the safety and reliability and taking the improvement of the economy of the system as a principle, and finally provides the method for coordinately controlling the power system under the condition of the fault.
Disclosure of Invention
The invention provides a coordination control method of a power system under the condition of a fault, aiming at the defects of the prior art.
The invention adopts the following technical scheme for solving the technical problems:
a power system coordination control method under the condition of fault occurrence comprises the following steps:
step A), adjusting the output of a conventional generator set, correspondingly adjusting the fault condition of a system, judging whether the problem that a node voltage phase angle exceeds the line or the branch power flow exceeds the line is solved, and if not, turning to the step B);
step B), wind and light abandoning of the distributed generator set is involved in system fault regulation, whether the problem that a node voltage phase angle crosses the line or a branch power flow power crosses the line is judged, and if the problem is not solved, the step C is carried out;
step C), adjusting three adjusting modes of conventional generator set output, distributed generator set wind and light abandoning and interruptible load simultaneously, judging whether the problem of node voltage phase angle crossing or branch tidal current power crossing is solved, and if not, turning to step D);
and D), adjusting four adjusting modes of the output of the conventional generator set, the wind and light abandoning of the distributed generator set, the interruptible load adjustment and the load shedding at the same time to obtain a system coordination control scheme.
As a further optimization scheme of the coordination control method of the power system under the condition of the fault, the specific steps of the step a) are as follows:
let the input power of each node in the power system bePSP＝PTD+PDG+PLWherein P isSPInjecting power for each node; pTDConventional generator set power injected for the node; pDGDistributed generator set power injected for the nodes; pLPower absorbed for the load, including interruptible load power PILAnd normal load power PCL；
When a fault occurs:
step A.1), the following constraint conditions are met: b θ ═ PSP、|θ|≤θmax、
Figure GDA0002860273720000021
Wherein B is a node admittance matrix of the system; theta is a node voltage phase angle; thetamaxIs the node voltage phase angle upper limit;
Figure GDA0002860273720000022
is the upper limit of the power flow between the node i and the node j;
step A.2), adjusting the output P of the conventional generator setTDSo that
Figure GDA0002860273720000023
Wherein,
Figure GDA0002860273720000024
respectively setting the active output, the upper limit of the active output and the lower limit of the active output of the ith conventional generator set;
step A.3), let
Figure GDA0002860273720000025
The objective function of the system regulation is to minimize the cost of adjusting the output of a conventional generator set, i.e., F ═ min { F (P)TD)}；
Wherein omegaTDA conventional generator set is adopted;
Figure GDA0002860273720000026
rated output for a conventional generator set; pTD,iIs a constantRegulating the active output of the generator set; a isi、biIs the cost coefficient of a conventional generator set;
step A.4), judging whether the problem of node voltage phase angle crossing or branch tidal current power crossing caused under the fault condition is solved, if so, obtaining the output of each conventional generator set and correspondingly adjusting, and if not, turning to the step B).
As a further optimization scheme of the coordination control method of the power system under the condition of the occurrence of the fault, the specific steps of the step B) are as follows:
step B.1), adjusting the power P of the distributed generator setDGNamely, the distributed generator set is abandoned by wind and light, so that
Figure GDA0002860273720000031
Wherein, PDG,i、
Figure GDA0002860273720000032
Respectively carrying out active output and rated active output after the ith DG is subjected to load shedding, wherein the DG comprises wind power W and photovoltaic PV;
step B.2), the following constraint conditions are met: b θ ═ PSP、|θ|≤θmax、
Figure GDA0002860273720000033
Step B.3), adjusting the output P of the conventional generator set at the same timeTDThe objective function of the system adjustment is that the cost lost by the wind and light abandoning is minimum:
Figure GDA0002860273720000034
wherein omegaDGIs a distributed generator set;
Figure GDA0002860273720000035
rated output of the distributed generator set; pDG,iFor distributed generator set, after wind and light are abandonedOutput power; c1Cost coefficients of wind and light abandonment for the distributed generator set;
step B.4), judging whether the node voltage phase angle crossing or branch tidal current power crossing problem caused under the fault condition is solved or not, and if so, obtaining the output of each conventional generator set and the output of the distributed generator set and correspondingly adjusting; if not, go to step C).
As a further optimization scheme of the coordination control method for the power system under the condition of the fault, the specific steps of the step C are as follows:
step C.1), adjusting the interruptible load size PILSo that
Figure GDA0002860273720000036
Wherein, PIL,i、
Figure GDA0002860273720000037
The size of the interruptible load of the ith node and the rated interruptible load capacity are respectively;
step C.2), the following constraint conditions are met: b θ ═ PSP、|θ|≤θmax、
Figure GDA0002860273720000038
Figure GDA0002860273720000039
Step C.3), adjusting the output P of the conventional generator setTDAnd power P of distributed generator setDGThe objective function of the system adjustment is to minimize the total cost lost by curtailment and adjustment of interruptible loads:
Figure GDA0002860273720000041
wherein omegaILIs an interruptible load set; c2A cost factor to interrupt load capacity;
step C.4), judging whether the node voltage phase angle crossing or branch tidal current power crossing problem caused under the fault condition is solved or not, if so, solving the output of each conventional generator set, the output of the distributed generator set and the size of the interruptible load after adjustment to make corresponding adjustment; if the fault is not resolved, go to step D).
As a further optimization scheme of the coordination control method of the power system under the condition of the occurrence of the fault, the specific steps in the step D) are as follows:
step D.1), adjusting the size P of the conventional loadCLI.e. the normal load is subjected to load shedding processing, so that
Figure GDA0002860273720000042
Wherein, PCL,i、
Figure GDA0002860273720000043
Respectively the normal load quantity and the rated normal load quantity after the load shedding of the ith node;
step D.2), the following constraint conditions are met: b θ ═ PSP、|θ|≤θmax、
Figure GDA0002860273720000044
Figure GDA0002860273720000045
Figure GDA0002860273720000046
Step D.3), adjusting the output P of the conventional generator setTDPower P of distributed generator setDGAnd interruptible load size PCLThe objective function of the system adjustment is to minimize the total cost lost by curtailment and adjustment of interruptible loads:
Figure GDA0002860273720000047
wherein omegaCLIs a conventional load user set; c3Cutting off the cost coefficient of the load for the conventional load user;
and D.4) obtaining the output of each conventional generator set, the output of the distributed generator set, the size of the interruptible load after adjustment and the size of the conventional load output, and performing corresponding adjustment to obtain a coordination control scheme.
Compared with the prior art, the invention adopting the technical scheme has the following technical effects:
the invention can safely and reliably solve the fault problem by considering the economical efficiency of the system when the fault occurs, and has strong practical value and practical significance.
Drawings
Fig. 1 is a flow chart of a power system coordination control method in case of a fault according to the present invention.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the attached drawings:
as shown in fig. 1, the invention discloses a power system coordination control method under a fault occurrence condition, which mainly comprises the following steps:
in the step A, the output of a conventional generator set is adjusted to correspondingly adjust the fault condition of the system, and the specific steps are as follows:
input power P of each node in electric power systemSP＝PTD+PDG+PLWherein P isSPFor the injected power of each node, PTDConventional generator set power, P, injected for a nodeDGDistributed generator set power, P, injected for a nodeLPower absorbed for the load, including interruptible load power PILAnd normal load power PCL；
When a fault occurs, in order to meet the safety and reliability of the power system, the following constraint conditions need to be met: b θ ═ PSP、|θ|≤θmax、
Figure GDA0002860273720000051
Wherein B is a systemThe node admittance matrix of (a); theta is a node voltage phase angle; thetamaxIs the node voltage phase angle upper limit;
Figure GDA0002860273720000052
is the upper limit of the power flow between the node i and the node j;
when a fault occurs, the problems that a node voltage phase angle crosses a line or a branch power flow crosses the line and the like can be caused; regulating the output P of a conventional generator setTDSo that
Figure GDA0002860273720000053
Wherein,
Figure GDA0002860273720000054
Figure GDA0002860273720000055
the active output and the upper and lower limits of the ith conventional generator set are respectively set;
order to
Figure GDA0002860273720000056
Wherein omegaTDA conventional generator set is adopted;
Figure GDA0002860273720000057
rated output for a conventional generator set; pTD,iThe regulated active power output of the conventional generator set; a isi、biIs the cost coefficient of a conventional generator set;
the objective function of the system regulation is to minimize the cost of adjusting the output of a conventional generator set, i.e., F ═ min { F (P)TD)}；
Judging whether the problems of node voltage phase angle crossing or branch tidal current power crossing caused under the fault condition are solved or not;
if the problem is solved, the output of each conventional generator set is obtained and correspondingly adjusted;
if the fault is not solved, the step B is carried out.
In the step B, only regulating the output of the conventional generator set can not ensure the safe and reliable operation of the system, considering that the wind and light abandoning of the distributed generator set participates in the fault regulation of the system, the concrete steps are as follows:
regulating power P of distributed generator setDGNamely, the distributed generator set is abandoned by wind and light, so that
Figure GDA0002860273720000061
Wherein, PDG,i、
Figure GDA0002860273720000062
Respectively carrying out active output and rated active output after load shedding on the ith DG (the DG comprises wind power W and photovoltaic PV);
in addition, the output P of the conventional generator set needs to be considered and adjustedTD；
The objective function of the system regulation is to minimize the cost lost by wind and light abandonment, i.e.
Figure GDA0002860273720000063
Wherein omegaDGIs a distributed generator set;
Figure GDA0002860273720000064
rated output of the distributed generator set; pDG,iActive power output of the distributed generator set after wind and light are abandoned; c1And the cost coefficient of wind and light abandoning for the distributed generator set.
The following constraints are satisfied: b θ ═ PSP、|θ|≤θmax、
Figure GDA0002860273720000065
Judging whether the problems of node voltage phase angle crossing or branch tidal current power crossing caused under the fault condition are solved or not;
if the problem is solved, the output of each conventional generator set and the output of the distributed generator sets are obtained and correspondingly adjusted;
if the fault is not resolved, go to step C.
In the step C, when the system fault degree is large, the adjustment needs to be carried out by considering the mode of simultaneously adjusting three priorities of adjusting the output of the conventional generator set, the wind and light abandoning of the distributed generator set and the interruptible load, and the method comprises the specific steps of:
adjusting interruptible load size PILSo that
Figure GDA0002860273720000066
Wherein, PIL,i、
Figure GDA0002860273720000067
The size of the interruptible load of the ith node and the rated interruptible load capacity are respectively;
the capacity is determined according to an agreement between a user and a power grid;
in addition, the output P of the conventional generator set needs to be considered at the same timeTDAnd power P of distributed generator setDG。
The objective function of the system adjustment is to minimize the total cost of wind curtailment and adjustment of interruptible loads, i.e.
Figure GDA0002860273720000071
Wherein omegaILIs an interruptible load set; c2Is a cost factor for interrupting load capacity.
The following constraints are satisfied: b θ ═ PSP、|θ|≤θmax、
Figure GDA0002860273720000072
Figure GDA0002860273720000073
Judging whether the problems of node voltage phase angle crossing or branch tidal current power crossing caused under the fault condition are solved or not;
if the problem is solved, the output of each conventional generator set, the output of the distributed generator set and the size of the interruptible load after adjustment are obtained and correspondingly adjusted;
if the fault is not resolved, go to step D.
In step D, when the system fault condition is serious, four priorities of adjusting the output of the conventional generator set, the wind and light abandoning of the distributed generator set, adjusting the interruptible load and load shedding need to be considered at the same time to obtain a system coordination control scheme, which specifically comprises the following steps:
adjusting the magnitude P of the normal loadCLI.e. the normal load is subjected to load shedding processing, so that
Figure GDA0002860273720000074
Wherein, PCL,i、
Figure GDA0002860273720000075
Respectively the normal load quantity and the rated normal load quantity after the load shedding of the ith node;
the adjustment of the conventional load of the system is obtained by an optimal load shedding calculation model in the fault state of the system.
In addition, the output P of the conventional generator set needs to be considered at the same timeTDPower P of distributed generator setDGAnd interruptible load size PCL。
The objective function of the system adjustment is to minimize the total cost of wind curtailment and adjustment of interruptible loads, i.e.
Figure GDA0002860273720000076
Wherein omegaCLIs a conventional load user set; c3And cutting off the cost coefficient of the load for the user with the normal load.
The following constraints are satisfied: b θ ═ PSP、|θ|≤θmax、
Figure GDA0002860273720000077
Figure GDA0002860273720000078
Figure GDA0002860273720000079
And obtaining the output of each conventional generator set, the output of the distributed generator sets, the size of the interruptible load after adjustment and the size of the conventional load output, and correspondingly adjusting to obtain a coordination control scheme.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (1)

1. A power system coordination control method under the condition of fault occurrence is characterized by comprising the following steps:
step A), adjusting the output of a conventional generator set, correspondingly adjusting the fault condition of a system, and judging whether the problem that a node voltage phase angle is crossed or a branch power flow power is crossed is solved, wherein the specific steps are as follows:
let the input power P of each node in the power systemSP＝PTD+PDG+PLIn which P isSPInjecting power for each node; pTDConventional generator set power injected for the node; pDGDistributed generator set power injected for the nodes; pLPower absorbed for the load, including interruptible load power PILAnd normal load power PCL；
When a fault occurs:
step A.1), the following constraint conditions are met: b θ ═ PSP、|θ|≤θmax、
Figure FDA0003130725620000011
Wherein B is a node admittance matrix of the system; theta is a node voltage phase angle; thetamaxIs the node voltage phase angle upper limit;
Figure FDA0003130725620000012
is the upper limit of the power flow between the node i and the node j;
step A.2), adjusting the power P of the conventional generator set injected by the nodeTDSo that
Figure FDA0003130725620000013
Wherein, PTD,i、
Figure FDA0003130725620000014
Respectively setting the active output, the upper limit of the active output and the lower limit of the active output of the ith conventional generator set;
step A.3), let
Figure FDA0003130725620000015
The objective function of the system regulation is to minimize the cost of adjusting the output of a conventional generator set, i.e., F ═ min { F (P)TD)}；
Wherein omegaTDA conventional generator set is adopted;
Figure FDA0003130725620000016
rated output for a conventional generator set; pTD,iThe regulated active power output of the conventional generator set; a isi、biIs the cost coefficient of a conventional generator set;
step A.4), judging whether the problem of node voltage phase angle crossing or branch tidal current power crossing caused under the fault condition is solved, if so, obtaining the output of each conventional generator set and correspondingly adjusting, and if not, turning to the step B);
step B), wind and light abandoning of the distributed generator set is involved in system fault regulation, and whether the problem that a node voltage phase angle crosses the line or a branch power flow power crosses the line is judged, and the specific steps are as follows:
step B.1), adjusting distributed generator set power P injected by nodesDGNamely, the distributed generator set is abandoned by wind and light, so that
Figure FDA0003130725620000017
Wherein, PDG,i、
Figure FDA0003130725620000018
Respectively carrying out active output and rated active output after the ith DG is subjected to load shedding, wherein the DG comprises wind power W and photovoltaic PV;
step B.2), the following constraint conditions are met: b θ ═ PSP、|θ|≤θmax、
Figure FDA0003130725620000021
Step B.3), adjusting the power P of the conventional generator set injected by the node at the same timeTDThe objective function of the system adjustment is that the cost lost by the wind and light abandoning is minimum:
Figure FDA0003130725620000022
wherein omegaDGIs a distributed generator set;
Figure FDA0003130725620000023
rated output of the distributed generator set; pDG,iActive power output of the distributed generator set after wind and light are abandoned; c1Cost coefficients of wind and light abandonment for the distributed generator set;
step B.4), judging whether the node voltage phase angle crossing or branch tidal current power crossing problem caused under the fault condition is solved or not, and if so, obtaining the output of each conventional generator set and the output of the distributed generator set and correspondingly adjusting; if not, turning to the step C);
step C), three adjusting modes of conventional generator set output, distributed generator set wind and light abandoning and interruptible load adjusting are adjusted simultaneously, and whether the problem that node voltage phase angle crosses or branch tidal current power crosses is judged, and the concrete steps are as follows:
step C.1), adjusting the interruptible load power PILSo that
Figure FDA0003130725620000024
Wherein, PIL,i、
Figure FDA0003130725620000025
The size of the interruptible load of the ith node and the rated interruptible load capacity are respectively;
step C.2), the following constraint conditions are met: b θ ═ PSP、|θ|≤θmax、
Figure FDA0003130725620000026
Step C.3), adjusting the power P of the conventional generator set injected by the nodeTDAnd node injected distributed genset power PDGThe objective function of the system adjustment is to minimize the total cost lost by curtailment and adjustment of interruptible loads:
Figure FDA0003130725620000027
wherein omegaILIs an interruptible load set; c2A cost factor to interrupt load capacity;
step C.4), judging whether the node voltage phase angle crossing or branch tidal current power crossing problem caused under the fault condition is solved or not, if so, solving the output of each conventional generator set, the output of the distributed generator set and the size of the interruptible load after adjustment to make corresponding adjustment; if the fault is not solved, turning to step D);
step D), adjusting four adjusting modes of conventional generator set output, distributed generator set wind and light abandoning, interruptible load adjustment and load shedding simultaneously to obtain a system coordination control scheme, which comprises the following specific steps:
step D.1), adjusting the conventional load power PCLI.e. the normal load is subjected to load shedding processing, so that
Figure FDA0003130725620000031
Wherein, PCL,i、
Figure FDA0003130725620000032
Respectively the normal load quantity and the rated normal load quantity after the load shedding of the ith node;
step D.2), the following constraint conditions are met: b θ ═ PSP、|θ|≤θmax、
Figure FDA0003130725620000033
Figure FDA0003130725620000034
Step D.3), adjusting the power P of the conventional generator set injected by the nodeTDDistributed generator set power P injected by nodesDGAnd normal load power PCLThe objective function of the system adjustment is to minimize the total cost lost by curtailment and adjustment of interruptible loads:
Figure FDA0003130725620000035
wherein omegaCLIs a conventional load user set; c3Cutting off the cost coefficient of the load for the conventional load user;
and D.4) obtaining the output of each conventional generator set, the output of the distributed generator set, the size of the interruptible load after adjustment and the size of the conventional load output, and performing corresponding adjustment to obtain a coordination control scheme.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2503523A1 (en) * 1974-03-18 1975-09-25 Gen Electric AC POWER SUPPLY SYSTEM
EP0359178B1 (en) * 1988-09-14 1995-12-13 Mitsubishi Denki Kabushiki Kaisha Load control system
CN103532142A (en) * 2013-10-24 2014-01-22 广州电力设计院 Refined and stable control method and system of electric system
CN105552860A (en) * 2015-12-29 2016-05-04 国家电网公司 Power distribution network isolated island operation scheme method based on energy storage and distributed generation
CN106355344A (en) * 2016-09-08 2017-01-25 四川大学 Method for robustly and optimally operating micro-grids on basis of orthogonal arrays
CN106712039A (en) * 2017-02-07 2017-05-24 国网江苏省电力公司电力科学研究院 Distribution network voltage regulation-based regional network load interaction active power control method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2503523A1 (en) * 1974-03-18 1975-09-25 Gen Electric AC POWER SUPPLY SYSTEM
EP0359178B1 (en) * 1988-09-14 1995-12-13 Mitsubishi Denki Kabushiki Kaisha Load control system
CN103532142A (en) * 2013-10-24 2014-01-22 广州电力设计院 Refined and stable control method and system of electric system
CN105552860A (en) * 2015-12-29 2016-05-04 国家电网公司 Power distribution network isolated island operation scheme method based on energy storage and distributed generation
CN106355344A (en) * 2016-09-08 2017-01-25 四川大学 Method for robustly and optimally operating micro-grids on basis of orthogonal arrays
CN106712039A (en) * 2017-02-07 2017-05-24 国网江苏省电力公司电力科学研究院 Distribution network voltage regulation-based regional network load interaction active power control method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
《含分布式发电的配电网重构及故障恢复算法研究》;邹必昌;《中国博士学位论文全文数据库 工程科技Ⅱ辑》;20130210;全文 *
《电力系统恢复决策与优化策略研究》;刘伟佳;《中国博士学位论文全文数据库 工程科技Ⅱ辑》;20170710;全文 *
《计及预想故障的电力系统风险调度模型与方法研究》;文云峰;《中国博士学位论文全文数据库 工程科技Ⅱ辑》;20161210;全文 *

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