CN117081094A - Reactive compensation method and device, electronic equipment and storage medium - Google Patents
Reactive compensation method and device, electronic equipment and storage medium Download PDFInfo
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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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
- H02J3/04—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
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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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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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
- 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]
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- 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
- Y02E40/30—Reactive power compensation
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Abstract
The invention discloses a reactive compensation method, a reactive compensation device, electronic equipment and a storage medium. The method comprises the following steps: acquiring an equivalent circuit model of a target line power supply system, wherein the equivalent circuit model comprises a high-voltage side node; carrying out power flow calculation on the equivalent circuit model to obtain the power factor of the high-voltage side node; if the power factor of the high-voltage side node is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node, and determining a reactive compensation strategy; and transmitting reactive compensation power and reactive compensation strategies to the compensation equipment so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategies. The scheme provided by the invention can efficiently, accurately and timely realize reactive power balance adjustment of the power grid so as to achieve the power factor assessment target of the power grid and improve the stability of the power grid.
Description
Technical Field
The present invention relates to the field of power grid technologies, and in particular, to a reactive power compensation method, a reactive power compensation device, an electronic device, and a storage medium.
Background
In the running process of the power system, if the reactive power supply is insufficient, the reactive power supply and the reactive load are in a low-voltage balance state, and the damage such as insufficient power supply, increased loss, equipment damage, reduced stability and the like of the equipment are caused; if the reactive power supply is abundant, but the operation management is improper and the voltage regulating means is insufficient, the damage of over-high voltage can be caused. Therefore, reactive compensation is reasonably carried out, so that reactive power generated by a reactive power supply of a power system and reactive load of the system are kept in a relatively balanced state, the reactive power compensation method is a necessary means for guaranteeing voltage quality and stable operation of a power grid, and has important significance in improving conveying capacity and reducing power grid loss.
The existing reactive compensation method is to manually control and adjust the reactive compensation device, and the adjustment quantity is judged and issued according to the experience of an electric expert. Due to the lack of systematic consideration, important working links such as power flow calculation, reactive compensation strategy analysis, reactive compensation control and the like are relatively independent, and a systematic and automatic flow is lacked, so that the reactive balance control has low working efficiency and difficult management, and a timely and fine control means is difficult to achieve, so that the stable and efficient operation of a power system is not facilitated. Meanwhile, due to the lack of means of system calculation and the capability of automatic instruction issuing, the reactive compensation strategy is extremely difficult to manage, and the reactive compensation operation of equipment is not timely enough.
Disclosure of Invention
The invention provides a reactive compensation method, a reactive compensation device, electronic equipment and a storage medium, which can efficiently, accurately and timely realize reactive balance adjustment of a power grid so as to achieve the power factor assessment target of the power grid and improve the stability of the power grid.
According to an aspect of the present invention, there is provided a reactive compensation method including:
acquiring an equivalent circuit model of a target line power supply system, wherein the equivalent circuit model comprises a high-voltage side node;
carrying out power flow calculation on the equivalent circuit model to obtain the power factor of the high-voltage side node;
if the power factor of the high-voltage side node is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node, and determining a reactive compensation strategy;
and transmitting reactive compensation power and reactive compensation strategies to the compensation equipment so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategies.
Optionally, performing load flow calculation on the equivalent circuit model to obtain a power factor of the high-voltage side node, including:
acquiring electrical quantity data of an equivalent circuit model;
according to the electrical quantity data, node voltages of all nodes in the equivalent circuit model are calculated respectively;
Calculating the complex power of the high-voltage side node according to the node voltages of all the nodes;
and calculating the power factor of the high-voltage side node according to the complex power of the high-voltage side node.
Optionally, the electrical quantity data includes an initial voltage and an initial complex power of all nodes;
according to the electrical quantity data, node voltages of all nodes in the equivalent circuit model are calculated respectively, and the method comprises the following steps:
construction of node voltage equationWherein the equivalent circuit model comprises n nodes, i and j each represent a node number, i is not equal to j, k is the iteration number, U i Representing the node voltage of node i, Y ii Admittance matrix of node i representing all other nodes short-circuited, Y ij Representing the admittance matrix between node i and node j when all other nodes are shorted, P i Representing node i active power, Q i Representing the reactive power of the node i;
substituting the initial voltage and the initial complex power of each node into the corresponding node voltage equation respectively, and iterating untilUp to now, where ε is the allowable error.
Optionally, the complex power of the high-voltage side node
Power factor of high voltage side node
Optionally, calculating reactive power compensation corresponding to the high-voltage side node includes:
obtaining ideal reactive power Q of high-voltage side node af(i) And actual reactive power Q i Wherein the ideal reactive power Q af(i) The power factor of the high-voltage side node is equal to the reactive power of the high-voltage side node when the power factor is checked,
according to the actual reactive power Q i And ideal reactive power Q af(i) Calculating reactive power compensation Q corresponding to high-voltage side node com(i) Wherein Q is com(i) ＝Q i -Q af(i) 。
Optionally, the compensation device comprises an in-phase power supply device and a reactor;
determining a reactive compensation strategy, comprising:
if the priority relation exists between the in-phase power supply device and the reactor, determining a reactive compensation strategy according to the priority relation between the in-phase power supply device and the reactor;
and if the in-phase power supply device and the reactor do not have a priority relation, acquiring candidate compensation strategies, and selecting one compensation strategy from the candidate compensation strategies as a reactive compensation strategy.
Optionally, determining the reactive compensation strategy according to a priority relationship between the in-phase power supply device and the reactor includes:
if the priority of the in-phase power supply device is higher than that of the reactor, generating a first reactive compensation strategy, wherein the first reactive compensation strategy is used for indicating the compensation equipment to dynamically and reactive compensate the high-voltage side node only through the in-phase power supply device;
And if the priority of the in-phase power supply device is lower than that of the reactor, generating a second reactive compensation strategy, wherein the second reactive compensation strategy is used for indicating the compensation equipment to perform fixed reactive compensation on the high-voltage side node through the reactor, and then performing dynamic reactive compensation on the high-voltage side node through the in-phase power supply device.
Optionally, obtaining a candidate compensation strategy, and selecting one compensation strategy from the candidate compensation strategies as a reactive compensation strategy, including:
generating a first candidate compensation strategy and a second candidate compensation strategy, wherein the first candidate compensation strategy is used for indicating the compensation equipment to dynamically and reactive power compensate the high-voltage side node only through the in-phase power supply device; the second candidate compensation strategy is used for indicating compensation equipment to perform fixed reactive compensation on the high-voltage side node through the reactor, and then perform dynamic reactive compensation on the high-voltage side node through the in-phase power supply device;
respectively simulating active power loss of an equivalent circuit model when reactive compensation is carried out on the high-voltage side node by adopting a first candidate compensation strategy and a second candidate compensation strategy;
and selecting a candidate compensation strategy with small active power loss as a reactive compensation strategy.
According to another aspect of the present invention, there is provided a reactive compensation device comprising: the system comprises a model acquisition module, a calculation module, a strategy determination module and a communication module;
The model acquisition module is used for acquiring an equivalent circuit model of the target line power supply system, wherein the equivalent circuit model comprises a high-voltage side node;
the calculation module is used for carrying out load flow calculation on the equivalent circuit model to obtain the power factor of the high-voltage side node; if the power factor of the high-voltage side node is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node;
the strategy determining module is used for determining a reactive compensation strategy;
and the communication module is used for sending reactive compensation power and reactive compensation strategies to the compensation equipment so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategies.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the reactive compensation method of any one of the embodiments of the invention.
According to another aspect of the invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to perform the reactive compensation method of any of the embodiments of the invention.
According to the technical scheme, the power factor of the high-voltage side node in the equivalent circuit model is calculated based on the power flow calculation technology by acquiring the equivalent circuit model of the target line power supply system. When the power factor is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node, and determining a reactive compensation strategy, so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategy. Compared with the existing reactive compensation method, the scheme provided by the invention can realize automatic and intelligent reactive compensation, release human resources and achieve the effects of reducing cost and enhancing efficiency; the compensation power value calculated by the power flow calculation technology is accurate, reactive power balance adjustment of the power grid is realized, the power factor assessment target of the power grid is achieved, and the stability of the power grid is improved. Meanwhile, the scheme can send reactive power compensation power and reactive power compensation strategies to the compensation equipment of the power grid at set time and frequency, and the range of the frequency can be accurate to the minute level.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a reactive compensation system according to a first embodiment of the present invention;
fig. 2 is a schematic flow chart of a reactive compensation method according to a first embodiment of the present invention;
fig. 3 is a schematic flow chart of a reactive compensation method according to a second embodiment of the present invention;
fig. 4 is an equivalent modeling of a transformer according to a second embodiment of the present invention;
fig. 5 is an equivalent modeling of a power supply cable according to a second embodiment of the present invention;
fig. 6 is an equivalent circuit model of a target line power supply system according to a second embodiment of the present invention;
fig. 7 is a schematic structural diagram of a reactive compensation device according to a third embodiment of the present invention;
fig. 8 is a schematic structural diagram of an electronic device according to a fourth embodiment of the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," "target," "candidate," and the like in the description and claims of the present invention and in the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a schematic structural diagram of a reactive compensation system according to a first embodiment of the present invention, and as shown in fig. 1, the reactive compensation system can be understood as a system for implementing reactive balance adjustment in an intelligent and automatic manner based on a computer system. The system can more efficiently, intelligently, automatically and finely process the reactive power balance problem of a complex power system, realize the full-automatic processing of electric quantity collection, tide calculation, reactive power compensation strategy analysis, issuing and execution, and finally achieve the aim of the reactive power balance state of the power system. The reactive power balance (also referred to as reactive power balance (bal-aneofele-carrier power system) of a power system refers to a state of performing reactive power balance calculation according to a power supply development plan and a power grid development plan, so that reactive power generated by a reactive power supply of the system is balanced with reactive load of the system.
Specifically, the reactive compensation system includes a reactive compensation control device 100, a power monitoring device 200, and a bay level device 300.
The bay level device 300 includes power supply equipment (e.g., transformers, bus tie switches, circuit breakers, power supply cables, etc.) and compensation equipment for the power system. The power monitoring device 200 mainly realizes monitoring and control functions of power supply devices of the power system. The reactive compensation control device 100 realizes the functions of data acquisition and remote control of power supply equipment of a power system through the power monitoring device 200; carrying out power flow calculation through the collected electrical quantity data, and outputting reactive power compensation power and reactive power compensation strategy corresponding to the high-voltage side node; and finally, the reactive compensation power and reactive compensation strategy are issued to the compensation equipment through the power monitoring equipment 200 to perform reactive compensation, so that the reactive balance state of the power grid is achieved.
An embodiment of the present invention provides a reactive power compensation method applied to the reactive power compensation system, and fig. 2 is a schematic flow chart of the reactive power compensation method provided in the first embodiment of the present invention. As shown in fig. 2, the present embodiment may be applicable to the case of reactive balance adjustment of a power grid, and the method may be performed by a reactive compensation device, which may be implemented in hardware and/or software, and the reactive compensation device may be configured in an electronic device, which may be the reactive compensation control device 100 in fig. 1 described above. As shown in fig. 2, the method includes:
s110, acquiring an equivalent circuit model of the target line power supply system, wherein the equivalent circuit model comprises a high-voltage side node.
The target line power supply system is any line which needs reactive balance adjustment. The target line power supply system generally includes: transformers, tie switches (e.g., bus tie switches, ring network tie switches), circuit breakers (e.g., transformer branch circuit breakers, station branch circuit breakers), power supply cables, and the like. The devices in the target line power supply system can have corresponding equivalent modeling, and the equivalent modeling of all the devices in the target line power supply system is sequentially connected according to the connection relation in the target line power supply system, so that an equivalent circuit model of the target line power supply system can be obtained.
In general, the equivalent circuit model includes nodes (e.g., high-side nodes, non-high-side nodes), branch sites (hereinafter, simply referred to as sites in the embodiments), transformers, tie switches, and circuit breakers.
And S120, carrying out power flow calculation on the equivalent circuit model to obtain the power factor of the high-voltage side node.
The tide calculation (load flowcalculation) is to calculate the distribution of the electric quantity such as active power, reactive power, voltage and the like in the power grid under the steady state operation state of the power system under the conditions of given power system network topology, element parameters and power generation/load parameters. The tide calculation is to determine the steady state operation state parameters of each part of the power system according to the given power grid structure, parameters, the operation conditions of the generator/load and other elements. Typically given operating conditions are power at various power and load points in the system, pivot point voltage, balance point voltage and phase angle. The operation state parameters to be solved comprise the voltage amplitude and phase angle of each bus node of the power grid, the power distribution of each branch, the power loss of the network and the like.
The power factor refers to the ratio of the active power to the apparent power of the ac circuit. Under certain voltage and power, the higher the value, the better the benefit, and the more fully utilized the power generation equipment. Commonly denoted cos phi. The power factor is an important assessment index of the power grid.
Specifically, the power factor of the high-voltage side node can be obtained by the following method: acquiring electrical quantity data of an equivalent circuit model; according to the electrical quantity data, node voltages of all nodes in the equivalent circuit model are calculated respectively; calculating the complex power of the high-voltage side node according to the node voltages of all the nodes; and calculating the power factor of the high-voltage side node according to the complex power of the high-voltage side node.
And S130, if the power factor of the high-voltage side node is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node, and determining a reactive compensation strategy.
After the power factor of the high-voltage side node is obtained, firstly judging whether the power factor of the high-voltage side node is smaller than the check power factor; if the power factor of the high-voltage side node is smaller than the check power factor, the target line power supply system is required to perform reactive compensation, reactive compensation power corresponding to the high-voltage side node is calculated at the moment, and a reactive compensation strategy is determined; if the power factor of the high-voltage side node is larger than or equal to the check power factor, the target line power supply system does not need reactive compensation, and the process is ended.
Reactive compensation is a technology which plays a role in improving the power factor of a power grid, reducing the loss of a power supply transformer and a transmission line, improving the power supply efficiency and improving the power supply environment in an electric power supply system. Therefore, the compensation device is indispensable in the power supply system, and the compensation device is reasonably selected, so that the loss of the power grid can be reduced to the maximum extent, and the quality of the power grid is improved.
The reactive power compensation strategy is a specific reactive power compensation scheme for guiding reactive power compensation implementation by calculating reactive power flow of a power supply system to determine an optimal compensation mode, compensation capacity and compensation place of the system from the perspective of the system in order to achieve a reactive power balance state of the power system and effectively reduce reactive power loss.
And S140, transmitting reactive compensation power and reactive compensation strategies to the compensation equipment so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategies.
In an embodiment, the compensation device comprises at least one of an in-phase supply and a reactor. The reactor can only send inductive reactive power, and can perform fixed reactive power compensation on the high-voltage side node; the in-phase power supply device can not only send out inductive reactive power, but also send out capacitive reactive power, and can dynamically compensate reactive power of the high-voltage side node.
The power factor of the high-voltage side node in the equivalent circuit model is calculated based on a tide calculation technology by acquiring the equivalent circuit model of the target line power supply system. When the power factor is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node, and determining a reactive compensation strategy, so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategy. Compared with the existing reactive compensation method, the scheme provided by the invention can realize automatic and intelligent reactive compensation, release human resources and achieve the effects of reducing cost and enhancing efficiency; the compensation power value calculated by the power flow calculation technology is accurate, reactive power balance adjustment of the power grid is realized, the power factor assessment target of the power grid is achieved, and the stability of the power grid is improved. Meanwhile, the scheme can send reactive power compensation power and reactive power compensation strategies to the compensation equipment of the power grid at set time and frequency, and the range of the frequency can be accurate to the minute level.
Example two
Fig. 3 is a flow chart of a reactive compensation method according to a second embodiment of the present invention, and the present embodiment provides a detailed reactive compensation scheme. As shown in fig. 3, the method includes:
s201, acquiring an equivalent circuit model of the target line power supply system, wherein the equivalent circuit model comprises a high-voltage side node.
Specifically, a mathematical model of the target line power supply system can be established first, and then an equivalent circuit model of the target line power supply system is obtained by combining the topology structure of the target line power supply system and the electrical characteristics of the equipment comprising the topology structure of the target line power supply system, and a node admittance matrix is written in parallel to serve as a calculation basis of the following steps.
The target line power supply system generally includes: transformers, tie switches (e.g., bus tie switches, ring network tie switches), circuit breakers (e.g., transformer branch circuit breakers, station branch circuit breakers), power supply cables, and the like. The devices in the target line power supply system can have corresponding equivalent modeling, and the equivalent modeling of all the devices in the target line power supply system is sequentially connected according to the connection relation in the target line power supply system, so that an equivalent circuit model of the target line power supply system can be obtained.
Fig. 4 is an equivalent modeling of a transformer according to the second embodiment of the present invention, and fig. 5 is an equivalent modeling of a power supply cable according to the second embodiment of the present invention.
A bus tie switch is arranged between two adjacent buses, and a ring network tie switch is arranged between adjacent power supply sections. Under the normal operation condition of the target line power supply system, each interconnection switch is opened, and when the target line power supply system fails and cannot normally supply power, the interconnection switch is closed, and the adjacent bus or the adjacent substation supplies power for the load. The bus tie switch may be equivalent to an impedance. The tie switch state matrix formed by all tie switches is used as an input variable, wherein elements in the matrix are 0 or 1,1 represents closed, and 0 represents open. When the element in the matrix is 0, i.e. the tie switch is turned off, the impedance takes the maximum value of (10 99 +j 10 99 ) Omega; when the element in the matrix is 1, i.e. the tie switch is closed, the impedance takes a minimum value of (10 -99 +j 10 -99 )Ω。
When the target line power supply system normally operates, the branch circuit breaker is closed; when the target line power supply system fails, the branch circuit breaker where the failure is located is disconnected, and the failure is isolated. The state matrix of the branch circuit breakers formed by all the branch circuit breakers is used as an input variable, wherein elements in the matrix are 0 or 1,1 represents that the circuit breakers are closed, and 0 represents that the circuit breakers are opened. When the element in the matrix is 1, namely the circuit breaker is closed, the impedance and admittance of the branch are the values of the branch; when the element in the matrix is 0, i.e. the circuit breaker is open, the impedance of the branch is set to a maximum value and the admittance is set to a minimum value. For the branch where the transformer is located, the length of the cable is short and can be ignored, and the winding impedance and excitation admittance of the transformer are mainly considered; for other branches, mainly cable impedance and capacitance to ground, the branch circuit breaker state matrix should be divided into two matrices, a transformer branch and a non-transformer branch.
Assuming that the incoming line of the target line power supply system is 110KV in two ways, 33KV traction power supply is provided after transformation, and the target line power supply system simultaneously supplies power to 4 branch stations (respectively recorded as station 1, station 2, station 3 and station 4). Fig. 6 is an equivalent circuit model of a target line power supply system according to a second embodiment of the present invention. As shown in fig. 6, the station 3 and the station 4 share a group of incoming line and incoming line tie switches, and the equivalent circuit model includes 2 transformers (1 master and 1 slave), 5 tie switches (1 110KV bus tie switch Ra, one 33KV bus tie switch Rb, 3 station incoming line tie switches Rc Rd and Re), 12 nodes (2 high-voltage side nodes 1 and 7, 2 transformer branch nodes 2 and 8, 8 branch station nodes 3-6, 9-12), 10 circuit breakers (2 transformer branch circuit breakers, 8 station branch circuit breakers).
S202, acquiring electric quantity data of an equivalent circuit model.
The electrical quantity data includes initial voltages U of all nodes 0 And initial complex power S 0 . Optionally, the electrical quantity data may also include each tie Switch state vector Switch, each transformer branch circuit breaker stateVector Trans, each non-transformer branch circuit breaker state vector Break, each reactor capacity vector Reac, each reactor Gear vector Gear, the reactor current state vector real_Reac, each in-phase supply compensation state vector Trac, each in-phase supply maximum compensation capacity vector Max_cop, each in-phase supply minimum compensation capacity vector Min_cop, each in-phase supply compensated capacity vector Have_cop.
In an embodiment, the assessment power factor pf0, the reactive compensation priority vector pri and the convergence accuracy seta of the power flow calculation required by the power division can also be obtained.
And S203, respectively calculating node voltages of all nodes in the equivalent circuit model according to the electrical quantity data.
Taking the equivalent circuit model shown in fig. 6 as an example, the equivalent circuit model includes 12 nodes, wherein node 1 and node 7 are high-voltage side nodes, and can be regarded as balance nodes in power flow calculation to balance the power of the whole network; the remaining nodes are known as PQ nodes, i.e. the active and reactive power of the node is given. The equivalent circuit model comprises 2 transformers in total, so that the dimension of a state matrix of a circuit breaker of a transformer branch circuit is 2 steps; the other 8 branches are arranged besides the transformer branch, so that the state matrix dimension of the breaker of the non-transformer branch is 8-order. The equivalent circuit model includes 5 tie switches in total, so the tie switch state matrix dimension is 5.
Specifically, the method for respectively calculating the node voltages of all the nodes in the equivalent circuit model according to the electrical quantity data may include the following two steps:
step a1: construction of node voltage equationWherein the equivalent circuit model comprises n nodes, i and j each represent a node number, i is not equal to j, k is the iteration number, U i Representing the node voltage of node i, Y ii Admittance matrix of node i representing all other nodes short-circuited, Y ij Representing the admittance matrix between node i and node j when all other nodes are shorted, P i Representing node i active power, Q i Representing node i reactive power。
Step a2: substituting the initial voltage and the initial complex power of each node into the corresponding node voltage equation respectively, and iterating untilUp to now, where ε is the allowable error.
In one embodiment, a Gaussian-Saidel iterative method may be used to solve for node voltages at all nodes in the equivalent circuit model.
S204, calculating the complex power of the high-voltage side node according to the node voltages of all the nodes.
After the iteration of step S203 is completed, the formula may be calculatedAnd obtaining the complex power of the high-voltage side node.
S205, calculating the power factor of the high-voltage side node according to the complex power of the high-voltage side node.
Wherein the power factor of the high voltage side node
S206, judging whether the power factor of the high-voltage side node is smaller than the check power factor. If yes, go to step S207; if not, the process is ended.
In one embodiment, the value of the examined power factor may be 0.9.
S207, calculating reactive power compensation power corresponding to the high-voltage side node.
Specifically, the method for calculating the reactive power compensation corresponding to the high-voltage side node may include the following two steps:
step b1: obtaining ideal reactive power Q of high-voltage side node af(i) And actual reactive power Q i Wherein the ideal reactive power Q af(i) The power factor of the high-voltage side node is equal to the reactive power of the high-voltage side node when the power factor is checked,
step b2: according to the actual reactive power Q i And ideal reactive power Q af(i) Calculating reactive power compensation Q corresponding to high-voltage side node com(i) Wherein Q is com(i) ＝Q i -Q af(i) 。
S208, confirming whether the in-phase power supply device and the reactor have a priority relation. If yes, go to step S209; if not, step S210 is performed.
If the compensation device comprises both in-phase supply means and reactors, it is first necessary to confirm whether there is a priority relationship between in-phase supply means and reactors before determining the reactive compensation strategy. If yes, go to step S209; if not, step S210 is performed.
S209, determining a reactive compensation strategy according to the priority relation between the in-phase power supply device and the reactor.
Specifically, if the priority of the in-phase power supply device is higher than the priority of the reactor, a first reactive compensation strategy is generated, wherein the first reactive compensation strategy is used for indicating the compensation equipment to dynamically and reactive compensate the high-voltage side node only through the in-phase power supply device.
Similarly, if the priority of the in-phase power supply device is lower than that of the reactor, a second reactive compensation strategy is generated, wherein the second reactive compensation strategy is used for indicating compensation equipment to perform fixed reactive compensation on the high-voltage side node through the reactor, and then perform dynamic reactive compensation on the high-voltage side node through the in-phase power supply device.
S210, acquiring candidate compensation strategies, and selecting one compensation strategy from the candidate compensation strategies as a reactive compensation strategy.
Specifically, the method for obtaining candidate compensation strategies and selecting one compensation strategy from the candidate compensation strategies as a reactive compensation strategy may include the following three steps:
step c1: generating a first candidate compensation strategy and a second candidate compensation strategy, wherein the first candidate compensation strategy is used for indicating the compensation equipment to dynamically and reactive power compensate the high-voltage side node only through the in-phase power supply device; the second candidate compensation strategy is used for indicating the compensation equipment to perform fixed reactive compensation on the high-voltage side node through the reactor, and then perform dynamic reactive compensation on the high-voltage side node through the in-phase power supply device.
For the second candidate compensation strategy, since the reactor is a fixed capacity compensation and only inductive reactive power can be sent out, the following three situations (1) just compensated (2) under-compensated (3) overcompensated can exist after the reactor is adopted for compensation. Just after compensation, namely the high-voltage side power factor after the compensation of the reactor meets the requirements of a power supply department, and the capacity of the in-phase power supply device to be compensated is 0; under-compensation, namely, the inductive reactive power compensated by the reactor is insufficient, and the in-phase power supply device is required to provide the inductive reactive power, so that the power factor reaches the requirement; overcompensation, namely excessive inductive reactive power provided by the reactor, causes the power factor to be reduced, and the in-phase power supply device is required to provide the capacitive reactive power to neutralize the inductive reactive power of the reactor so as to enable the power factor to meet the requirement.
Step c2: and when the reactive compensation is carried out on the high-voltage side node by adopting the first candidate compensation strategy and the second candidate compensation strategy, respectively, simulating the active power loss of the equivalent circuit model.
Specifically, the active power loss of the equivalent circuit model
Step c3: and selecting a candidate compensation strategy with small active power loss as a reactive compensation strategy.
And S211, transmitting reactive compensation power and reactive compensation strategies to the compensation equipment so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategies.
Taking the equivalent circuit model shown in fig. 6 as an example, table 1 shows the load flow calculation results of the balance nodes.
TABLE 1
Assuming that the compensation device comprises two reactors and two in-phase power supply devices, the reactive power compensation strategy shown in table 2 can be obtained by combining the power flow calculation results of table 1.
TABLE 2
| Compensation device | Reactive compensation strategy of node 1 | Reactive compensation strategy for node 7 |
| Reactor 1 | Without input | Input into |
| Reactor 2 | Input into | Without input |
| In-phase power supply device 1 | +1.5265MVAR | / |
| In-phase power supply device 2 | / | +1.5265MVAR |
It is to be added that the scheme provided by the invention can also send reactive power compensation and reactive power compensation strategies to the compensation equipment of the power grid at set time and frequency, and the range of the frequency can be accurate to the minute level. The reactive control strategy for the same time period of the day can be determined from the historical reactive control strategy. And the actual average power factor in the assessment period of the power supply bureau can be rechecked. In the later stage of the checking period, the target power factor of the time period following the period can be adjusted according to the average power factor of the period so as to achieve that the average power factor of the whole checking period meets the checking requirement of a power supply bureau.
The embodiment of the invention provides a reactive compensation method, which comprises the following steps: acquiring an equivalent circuit model of a target line power supply system, wherein the equivalent circuit model comprises a high-voltage side node; carrying out power flow calculation on the equivalent circuit model to obtain the power factor of the high-voltage side node; if the power factor of the high-voltage side node is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node, and determining a reactive compensation strategy; and transmitting reactive compensation power and reactive compensation strategies to the compensation equipment so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategies. The power factor of the high-voltage side node in the equivalent circuit model is calculated based on a tide calculation technology by acquiring the equivalent circuit model of the target line power supply system. When the power factor is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node, and determining a reactive compensation strategy, so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategy. Compared with the existing reactive compensation method, the scheme provided by the invention can realize automatic and intelligent reactive compensation, release human resources and achieve the effects of reducing cost and enhancing efficiency; the compensation power value calculated by the power flow calculation technology is accurate, reactive power balance adjustment of the power grid is realized, the power factor assessment target of the power grid is achieved, and the stability of the power grid is improved. Meanwhile, the scheme can send reactive power compensation power and reactive power compensation strategies to the compensation equipment of the power grid at set time and frequency, and the range of the frequency can be accurate to the minute level.
Example III
Fig. 7 is a schematic structural diagram of a reactive compensation device according to a third embodiment of the present invention. As shown in fig. 7, the apparatus includes: a model acquisition module 701, a calculation module 702, a policy determination module 703 and a communication module 704.
The model obtaining module 701 is configured to obtain an equivalent circuit model of the target line power supply system, where the equivalent circuit model includes a high-voltage side node;
the calculation module 702 is configured to perform load flow calculation on the equivalent circuit model to obtain a power factor of the high-voltage side node; if the power factor of the high-voltage side node is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node;
a policy determining module 703, configured to determine a reactive compensation policy;
and the communication module 704 is used for sending reactive compensation power and reactive compensation strategies to the compensation equipment so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategies.
Optionally, the calculating module 702 is specifically configured to obtain electrical quantity data of the equivalent circuit model; according to the electrical quantity data, node voltages of all nodes in the equivalent circuit model are calculated respectively; calculating the complex power of the high-voltage side node according to the node voltages of all the nodes; and calculating the power factor of the high-voltage side node according to the complex power of the high-voltage side node.
Optionally, the electrical quantity data includes an initial voltage and an initial complex power of all nodes;
the calculation module 702 is specifically configured to construct a node voltage equationWherein the equivalent circuit model comprises n nodes, i and j each represent a node number, i is not equal to j, k is the iteration number, U i Representing the node voltage of node i, Y ii Admittance matrix of node i representing all other nodes short-circuited, Y ij Representing the admittance matrix between node i and node j when all other nodes are shorted, P i Representing node i active power, Q i Representing the reactive power of the node i; substituting the initial voltage and the initial complex power of each node into the corresponding node voltage equation respectively, and iterating untilUp to now, where ε is the allowable error.
Optionally, the complex power of the high-voltage side node
Power factor of high voltage side node/>
Optionally, the calculating module 702 is specifically configured to obtain the ideal reactive power Q of the high-voltage side node af(i) And actual reactive power Q i Wherein the ideal reactive power Q af(i) The power factor of the high-voltage side node is equal to the reactive power of the high-voltage side node when the power factor is checked,according to the actual reactive power Q i And ideal reactive power Q af(i) Calculating reactive power compensation Q corresponding to high-voltage side node com(i) Wherein Q is com(i) ＝Q i -Q af(i) 。
Optionally, the compensation device comprises an in-phase power supply device and a reactor;
the policy determining module 703 is specifically configured to determine a reactive compensation policy according to a priority relationship between the in-phase power supply device and the reactor if the in-phase power supply device and the reactor have a priority relationship; and if the in-phase power supply device and the reactor do not have a priority relation, acquiring candidate compensation strategies, and selecting one compensation strategy from the candidate compensation strategies as a reactive compensation strategy.
Optionally, the policy determining module 703 is specifically configured to generate a first passive compensation policy if the priority of the in-phase power supply device is higher than the priority of the reactor, where the first passive compensation policy is used to instruct the compensation device to dynamically and reactive compensate the high-voltage side node only through the in-phase power supply device; and if the priority of the in-phase power supply device is lower than that of the reactor, generating a second reactive compensation strategy, wherein the second reactive compensation strategy is used for indicating the compensation equipment to perform fixed reactive compensation on the high-voltage side node through the reactor, and then performing dynamic reactive compensation on the high-voltage side node through the in-phase power supply device.
Optionally, the policy determining module 703 is specifically configured to generate a first candidate compensation policy and a second candidate compensation policy, where the first candidate compensation policy is used to instruct the compensation device to dynamically perform reactive compensation on the high-voltage side node only through the in-phase power supply device; the second candidate compensation strategy is used for indicating compensation equipment to perform fixed reactive compensation on the high-voltage side node through the reactor, and then perform dynamic reactive compensation on the high-voltage side node through the in-phase power supply device; respectively simulating active power loss of an equivalent circuit model when reactive compensation is carried out on the high-voltage side node by adopting a first candidate compensation strategy and a second candidate compensation strategy; and selecting a candidate compensation strategy with small active power loss as a reactive compensation strategy.
The reactive compensation device provided by the embodiment of the invention can execute the reactive compensation method provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Example IV
Fig. 8 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 8, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as reactive compensation methods.
In some embodiments, the reactive compensation method may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When a computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the reactive compensation method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the reactive compensation method by any other suitable means (e.g. by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (11)
1. A reactive compensation method, comprising:
obtaining an equivalent circuit model of a target line power supply system, wherein the equivalent circuit model comprises a high-voltage side node;
carrying out load flow calculation on the equivalent circuit model to obtain the power factor of the high-voltage side node;
if the power factor of the high-voltage side node is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node, and determining a reactive compensation strategy;
And sending the reactive compensation power and the reactive compensation strategy to a compensation device so that the compensation device performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategy.
2. The method according to claim 1, wherein the performing load flow calculation on the equivalent circuit model to obtain the power factor of the high-voltage side node includes:
acquiring electrical quantity data of the equivalent circuit model;
according to the electrical quantity data, node voltages of all nodes in the equivalent circuit model are calculated respectively;
calculating the complex power of the high-voltage side node according to the node voltages of all the nodes;
and calculating the power factor of the high-voltage side node according to the complex power of the high-voltage side node.
3. The method of claim 2, wherein the electrical quantity data comprises an initial voltage and an initial complex power of all nodes;
and respectively calculating node voltages of all nodes in the equivalent circuit model according to the electrical quantity data, wherein the node voltages comprise:
construction of node voltage equationWherein the equivalent circuit model comprises n nodes, i and j each represent a node number, i is not equal to j, k is the iteration number, U i Representing the node voltage of node i, Y ii Admittance matrix of node i representing all other nodes short-circuited, Y ij Representing the admittance matrix between node i and node j when all other nodes are shorted, P i Representing node i active power, Q i Representing the reactive power of the node i;
substituting the initial voltage and the initial complex power of each node into the corresponding node voltage equation respectively, and iterating untilUp to now, where ε is the allowable error.
4. The method of claim 3, wherein the step of,
complex power of the high voltage side node
Power factor of the high voltage side node
5. A method according to claim 3, wherein said calculating reactive compensation power for the high side node comprises:
obtaining the ideal reactive power Q of the high-voltage side node af(i) And actual reactive power Q i Wherein the ideal reactive power Q af(i) For the power factor of the high-voltage side node to be equal to the reactive power of the high-voltage side node when the power factor is checked,
according to the actual reactive power Q i And the ideal reactive power Q af(i) Calculating reactive power compensation Q corresponding to the high-voltage side node com(i) Wherein Q is com(i) ＝Q i -Q af(i) 。
6. The method of claim 1, wherein the compensation device comprises an in-phase power supply and a reactor;
The determining reactive compensation strategy includes:
if the priority relation exists between the in-phase power supply device and the reactor, determining the reactive compensation strategy according to the priority relation between the in-phase power supply device and the reactor;
and if the in-phase power supply device and the reactor do not have a priority relation, acquiring candidate compensation strategies, and selecting one compensation strategy from the candidate compensation strategies as the reactive compensation strategy.
7. The method of claim 6, wherein said determining said reactive compensation strategy based on a priority relationship between said in-phase power supply and said reactor comprises:
if the priority of the in-phase power supply device is higher than that of the reactor, generating a first reactive compensation strategy, wherein the first reactive compensation strategy is used for indicating the compensation equipment to dynamically and reactive compensate the high-voltage side node only through the in-phase power supply device;
and if the priority of the in-phase power supply device is lower than that of the reactor, generating a second reactive compensation strategy, wherein the second reactive compensation strategy is used for indicating the compensation equipment to perform fixed reactive compensation on the high-voltage side node through the reactor, and then performing dynamic reactive compensation on the high-voltage side node through the in-phase power supply device.
8. The method of claim 6, wherein the obtaining candidate compensation strategies and selecting one compensation strategy from the candidate compensation strategies as the reactive compensation strategy comprises:
generating a first candidate compensation strategy and a second candidate compensation strategy, wherein the first candidate compensation strategy is used for indicating the compensation equipment to dynamically and reactive power compensate the high-voltage side node only through the in-phase power supply device; the second candidate compensation strategy is used for indicating the compensation equipment to perform fixed reactive compensation on the high-voltage side node through the reactor, and then perform dynamic reactive compensation on the high-voltage side node through the in-phase power supply device;
respectively simulating active power loss of the equivalent circuit model when reactive compensation is carried out on the high-voltage side node by adopting the first candidate compensation strategy and the second candidate compensation strategy;
and selecting a candidate compensation strategy with small active power loss as the reactive compensation strategy.
9. A reactive compensation device, comprising: the system comprises a model acquisition module, a calculation module, a strategy determination module and a communication module, and is characterized in that:
the model acquisition module is used for acquiring an equivalent circuit model of the target line power supply system, wherein the equivalent circuit model comprises a high-voltage side node;
The calculation module is used for carrying out load flow calculation on the equivalent circuit model to obtain the power factor of the high-voltage side node; if the power factor of the high-voltage side node is smaller than the check power factor, calculating reactive compensation power corresponding to the high-voltage side node;
the strategy determining module is used for determining a reactive compensation strategy;
and the communication module is used for sending reactive compensation power and reactive compensation strategies to the compensation equipment so that the compensation equipment performs reactive compensation on the high-voltage side node according to the reactive compensation power and the reactive compensation strategies.
10. An electronic device, the electronic device comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the reactive compensation method of any one of claims 1-8.
11. A computer readable storage medium, characterized in that the computer readable storage medium stores computer instructions for causing a processor to implement the reactive compensation method of any one of claims 1-8 when executed.
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