CN116093962A - Automatic voltage control method and device for new energy electric field based on double instructions - Google Patents
Automatic voltage control method and device for new energy electric field based on double instructions Download PDFInfo
- Publication number
- CN116093962A CN116093962A CN202310380638.1A CN202310380638A CN116093962A CN 116093962 A CN116093962 A CN 116093962A CN 202310380638 A CN202310380638 A CN 202310380638A CN 116093962 A CN116093962 A CN 116093962A
- Authority
- CN
- China
- Prior art keywords
- control
- electric field
- new energy
- energy electric
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005684 electric field Effects 0.000 title claims abstract description 250
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000004364 calculation method Methods 0.000 claims abstract description 24
- 238000005457 optimization Methods 0.000 claims abstract description 14
- 230000035945 sensitivity Effects 0.000 claims description 15
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000004590 computer program Methods 0.000 claims description 6
- 230000009977 dual effect Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 16
- 230000033228 biological regulation Effects 0.000 description 8
- 238000011217 control strategy Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003828 downregulation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000002222 downregulating effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003827 upregulation Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—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
-
- 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
- H02J3/50—Controlling the sharing of the out-of-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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
Abstract
The invention provides a new energy electric field automatic voltage control method and device based on double instructions, wherein the method comprises the following steps: constructing a new energy electric field control region model; performing optimal power flow calculation to obtain a voltage optimization target value of a central bus in a new energy electric field control area; calculating an adjustment target value of a high-voltage side control bus of the new energy electric field control generator to generate a control target coding instruction, calculating a control target value of the high-voltage side control bus of the new energy electric field control generator according to a voltage measurement value and the adjustment target value of the high-voltage side control bus of the new energy electric field control generator to generate a control increment coding instruction, and obtaining an instruction execution result corresponding to the voltage control instruction obtained through analysis to realize automatic voltage control of the new energy electric field based on double instructions. The method solves the problem that the control targets of the AVC master station and the AVC substation of the new energy electric field are inconsistent in the automatic voltage control of the new energy electric field, and further improves the running stability of the electric power system.
Description
Technical Field
The invention belongs to the technical field of power grid dispatching, and relates to a new energy electric field automatic voltage control method and device based on double instructions.
Background
An automatic voltage control (AVC, automatic Voltage Control) system is an important means for realizing safe (voltage stability margin improvement), economical (network loss reduction) and high-quality (voltage qualification rate improvement) operation of a power transmission network. The AVC system is constructed on a power grid Energy Management System (EMS), can utilize real-time operation data of a power grid, scientifically decides an optimal reactive voltage adjustment scheme from the perspective of global optimization of the power grid, and automatically issues the optimal reactive voltage adjustment scheme to a new energy electric field, a transformer substation and a lower power grid dispatching mechanism for execution.
The master station part of the AVC system is realized based on software in a power system control center, and the voltage control strategy of the AVC system to the power transmission network mainly comprises reactive power control strategies of all generators of a new energy electric field and reactive power equipment control strategies of a transformer substation. The reactive power control strategy for each generator of the new energy electric field adopts the following main modes: after reactive power adjustment amounts of all generator sets of the new energy electric field are obtained through reactive power optimization calculation, the reactive power adjustment amounts are sent to an AVC substation system of the new energy electric field through a data communication channel, and after the AVC substation of the new energy electric field receives the reactive power adjustment amounts of the generators, reactive power generated by the generators is adjusted in a stepping mode according to the running state of each generator in the current new energy electric field until the adjustment amounts issued by the AVC main station are reached. The reactive power equipment control strategy of the transformer substation is a switching instruction of reactive power compensation equipment, wherein the reactive power equipment mainly comprises a capacitor and a reactor, and when the capacitor is switched in or the reactor is cut off, the bus voltage is increased; when the capacitor is cut off or the reactor is put in, the bus voltage decreases. The AVC master station issues an instruction for switching in or switching off the reactive equipment, and an automatic monitoring system in the transformer substation finds a breaker connected with the reactive equipment according to the received instruction and switches on or off the breaker so as to complete switching in or switching off of the reactive equipment.
When the AVC system actually operates, two important problems are faced in the process that the AVC master station issues control instructions to an AVC new energy electric field AVC substation. Firstly, when the AVC master station and the AVC new energy electric field AVC substation are different in data source, measurement errors may exist, and if the optimized target value of the generator high-voltage bus is directly issued and controlled, the situation of incorrect voltage regulation direction can be generated. For example, the current sampling voltage of the high-voltage bus of the control generator, which is acquired by the AVC master station, is 525.5kV, the current sampling voltage of the AVC new energy electric field AVC substation, which is acquired by another data source, is 526.2kV, the optimal target value of the high-voltage bus of the control generator, which is generated by performing secondary voltage control calculation on the AVC master station side, is 526.0kV, that is, the AVC master station expects the high-voltage bus of the new energy electric field to rise by 0.5kV, but if the optimal target value of the high-voltage bus of the control generator is 526.0kV, the AVC new energy electric field AVC substation will perform operation of reducing the bus voltage by 0.2kV, which is opposite to the direction of expected voltage regulation of the AVC master station; secondly, because of interference of a communication channel, the AVC (automatic voltage control) substation of the new energy source electric field possibly receives continuous identical control instructions, and at the moment, the AVC substation of the new energy source electric field cannot judge whether the control instructions are repeated instructions, if the single control instruction is adopted for adjustment, the condition that the voltage of a high-voltage bus of a generator is over-adjusted or the adjustment direction of the voltage of the AVC substation is opposite to that of the AVC substation is likely to be caused.
Disclosure of Invention
The invention provides a new energy electric field automatic voltage control method based on double instructions, which at least solves the technical problem that an AVC master station and a new energy electric field AVC substation in the new energy electric field automatic voltage control are inconsistent in control targets.
Another object of the present invention is to provide a new energy electric field automatic voltage control device based on double instructions.
The invention discloses a new energy electric field automatic voltage control method based on double instructions, which comprises the following steps:
step S1, a new energy electric field control area model is constructed based on the running state and measurement data of each device acquired in the electric power system;
step S2, the new energy electric field AVC master station calculates the optimal power flow of the new energy electric field control area model to obtain a voltage optimization target value of a central bus of the new energy electric field control area;
step S3, taking the voltage optimization target value as a target, calculating to obtain an adjustment target value of a control bus of a high-voltage side of the new energy electric field control generator based on reactive voltage sensitivity of a central bus of the new energy electric field control region in the new energy electric field control region model and reactive power adjustment capability of a control generator set in the new energy electric field control region so as to generate a control target coding instruction, and issuing the control target coding instruction to a new energy electric field AVC substation;
step S4, calculating a control target value of the control bus control of the high-voltage side of the new energy electric field control generator according to the voltage measurement value and the adjustment target value of the high-voltage bus of the new energy electric field control generator so as to generate a control increment coding instruction, and issuing the control increment coding instruction to an AVC substation of the new energy electric field;
and S5, acquiring an instruction execution result corresponding to a voltage control instruction obtained by analyzing the control target coding instruction and the control increment coding instruction by the new energy electric field AVC substation according to the decoding rule so as to realize automatic voltage control of the new energy electric field based on the double instructions.
Preferably, the expression of the new energy electric field control region model is:
in the formula ,
for the new energy electric field control area model of electric wire netting side, < ->
Is a central bus in a new energy electric field control area, < ->
Is the total number of central buses in the area, +.>
A generator is controlled for the new energy electric field in the new energy electric field control area,
is the total electric field of new energy source->
Control bus bar for controlling high-voltage side of generator for electric field of new energy source,/for controlling high-voltage side of generator for electric field of new energy source>
The total number of the high-voltage side buses.
Preferably, the step S3 includes:
calculating the maximum up-regulating quantity of a control bus of a high-voltage side of a new energy electric field control generator
And maximum amount of downregulation
：
wherein ,
new energy electric field control generator in new energy electric field control area>
For->
Reactive voltage sensitivity of a strip neutral bus, +.>
Generator controlled by electric field for new energy>
Is increased by reactive value,/>
Generator controlled by electric field for new energy>
Is a reducible reactive value;
calculating to obtain an adjustment target value of a control bus of the high-voltage side of the new energy electric field control generator by using a secondary planning standard type
：/>
The quadratic programming standard type:
wherein 
Representing constraint matrix>
Representing a full matrix of constraints>
To controlVariable constraint condition matrix is calculated to obtain an adjustment target value +.>
。
Preferably, the step S4 includes:
according to the adjustment target value
And voltage measurement>
Calculating to obtain a control target value +.f of a control bus of a high-voltage side of the new energy electric field control generator>
：
To obtain control increment code instruction
；
Encoding control increments into instructions
And the new energy electric field AVC substation is issued.
Preferably, the step S5 includes:
coding instructions according to the control targets
Obtaining a voltage control target value of a high-voltage side bus of the new energy electric field control generator>
Decoding and analyzing control increment coding instruction issued by a master station according to increment coding rules>
Obtaining a new productVoltage control increment value of high-voltage side bus of energy electric field control generator>
；
Controlling voltage measurement value of high-voltage side bus of generator by using new energy electric field
With the voltage control increment value
Summation is then carried out with the target value of the voltage control value +.>
A comparison selection is made, and a control execution target value +.>
The method comprises the steps of carrying out a first treatment on the surface of the Acquiring new energy electric field AVC substation based on the execution control execution target value +.>
And the generated voltage control instruction corresponds to an instruction execution result so as to realize automatic voltage control.
Preferably, the new energy electric field is used for controlling the voltage measurement value of the high-voltage side bus of the generator
And the voltage control increment value +>
Summation is then carried out with the target value of the voltage control value +.>
A comparison selection is made, and a control execution target value +.>
Comprising:
if it is
Then select the voltage control value target value +.>
As execution target +.>
；
If it is
Then select the voltage measurement value +.>
And a voltage control increment value->
The summed value is taken as execution target +.>
。
An embodiment of a second aspect of the present invention provides a new energy electric field automatic voltage control device based on dual instructions, including:
the model construction module is used for constructing a new energy electric field control area model based on the running state and measurement data of each device acquired in the electric power system;
the first calculation module is used for the new energy electric field AVC master station to calculate the optimal power flow of the new energy electric field control region model to obtain the voltage optimization target value of the central bus of the new energy electric field control region
；/>
A second calculation module for optimizing the target value with the voltage
The reactive voltage sensitivity of the central bus of the new energy electric field control area in the new energy electric field control area model is used as a target>
New energy electric field controlReactive power regulation capability of the control generator set in the area is calculated to obtain a regulating target value of a control bus of a high-voltage side of the new energy electric field control generator>
To generate control target coding instruction +.>
And issuing to a new energy electric field AVC substation;
the third calculation module is used for controlling the voltage measurement value of the high-voltage bus of the generator according to the new energy electric field
And adjusting the target value +.>
Calculating to obtain a control increment value of the control of the high-voltage side control bus of the new energy electric field control generator>
To generate control increment coding instruction +>
And issuing to a new energy electric field AVC substation;
the instruction control module is used for acquiring a control target coding instruction of the new energy electric field AVC substation according to the decoding rule
And control delta code instruction->
Analyzing the command execution result corresponding to the obtained voltage control command to realize automatic voltage control of the new energy electric field based on the double commands.
Preferably, the expression of the new energy electric field control region model is:
in the formula ,
for the new energy electric field control area model of electric wire netting side, < ->
Is a central bus in a new energy electric field control area, < ->
Is the total number of central buses in the area, +.>
A generator is controlled for the new energy electric field in the new energy electric field control area,
is the total electric field of new energy source->
Control bus bar for controlling high-voltage side of generator for electric field of new energy source,/for controlling high-voltage side of generator for electric field of new energy source>
The total number of the high-voltage side buses.
An embodiment of a third aspect of the present invention provides an electronic device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method as described in the embodiments of the first aspect when the program is executed.
An embodiment of a fourth aspect of the present invention proposes a computer readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements a method as described in the embodiment of the first aspect.
The invention provides a new energy electric field automatic voltage control method, a device, equipment and a storage medium based on double instructions, which are used for solving the problem that the control targets of an AVC master station and a new energy electric field AVC substation in the new energy electric field automatic voltage control are inconsistent, so that the safety of reactive voltage control is improved, and the running stability of an electric power system is further improved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a flow chart of a new energy electric field automatic voltage control method based on double instructions according to an embodiment of the invention;
fig. 2 is a schematic diagram of a power system according to an embodiment of the present invention;
fig. 3 is a block diagram of a new energy electric field automatic voltage control device based on double instructions according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The following describes a new energy electric field automatic voltage control method, device, equipment and storage medium based on double instructions with reference to the accompanying drawings.
Fig. 1 is a flowchart of a new energy electric field automatic voltage control method based on double instructions according to an embodiment of the present invention, as shown in fig. 1, the method includes:
step S1, a new energy electric field control area model is constructed based on the running states and measurement data of all the devices acquired in the power system.
Step S2, the new energy electric field AVC master station calculates the optimal power flow of the new energy electric field control region model to obtain a voltage optimization target value of a central bus of the new energy electric field control region
；
Step S3, optimizing the target value by voltage
The reactive voltage sensitivity of the central bus of the new energy electric field control area in the new energy electric field control area model is used as a target>
And controlling reactive power regulation capability of the generator set in the new energy electric field control area, and calculating to obtain an adjustment target value of a control bus of a high-voltage side of the new energy electric field control generator>
To generate control target coding instruction +.>
And issuing to a new energy electric field AVC substation;
step S4, controlling voltage measurement values of a high-voltage bus of the generator according to the new energy electric field
And adjusting the target value
Calculating to obtain a control target value +.A control bus control of the high-voltage side control generator of the new energy electric field control generator>
To generate control increment coding instruction +>
And issuing to a new energy electric field AVC substation;
s5, acquiring a control target coding instruction of the new energy electric field AVC substation according to the decoding rule
And control delta code instruction->
Analyzing the command execution result corresponding to the obtained voltage control command to realize automatic voltage control of the new energy electric field based on the double commands.
Specifically, as shown in the power system in fig. 2, acquiring running states and measurement data of each device in the power system, and constructing a new energy electric field control region; the new energy electric field AVC master station obtains a central bus voltage optimization target value of a new energy electric field control area according to the optimal power flow calculation result; generating a new energy electric field to control a voltage control target value of a high-voltage bus of the generator according to the sensitivity and the unit regulation capability; selecting available new energy electric fields to control a high-voltage bus of the generator according to the numbers sent by the substations, and collecting the voltage value of the bus voltage; generating a new energy electric field control generator high-voltage bus increment coding control instruction and a control target value instruction, and transmitting the new energy electric field control generator high-voltage bus increment coding control instruction and the control target value instruction to an AVC substation; and the new energy electric field AVC substation analyzes the incremental coding and control target value instructions issued by the master station according to the decoding rules to generate new energy electric field control instructions.
In the embodiment of the invention, the calculation formula of the new energy electric field control region model is as follows:
in the formula ,
for the electric field control area model of new energy on the power grid side, < > in->
Is a central bus in a new energy electric field control area, < ->
Is the total number of central buses in the area, +.>
For new energy electric field control generator in new energy electric field control area, < >>
Is the total electric field of new energy source->
Control bus bar for controlling high-voltage side of generator for electric field of new energy source,/for controlling high-voltage side of generator for electric field of new energy source>
The total number of the high-voltage side buses.
In the embodiment of the invention, the central bus of the new energy electric field control area is obtained according to the optimal power flow calculation result
Middle->
Voltage optimization target value of strip central bus>
。
Further, the objective function of the optimal power flow calculation formula is as follows:
the objective function equation constraint of the optimal power flow calculation formula is as follows:
the inequality constraint of the objective function of the optimal power flow calculation formula is as follows:
calculating to obtain optimal control targets of voltages of all buses in power grid
。
At the bookIn the embodiment of the invention, the generator is controlled according to the new energy electric field in the new energy electric field control area
For the first
Reactive voltage sensitivity of a strip neutral bus>
And a new energy electric field control generator in the new energy electric field control region>
Reactive sensitivity of control bus on high-voltage side of new energy electric field control generator>
。
It should be noted that, the jacobian matrix is constructed by using the online power flow calculation result, and the reactive power and the active power sensitivity are solved.
As an embodiment of the present invention, each new energy electric field unit in the online computing area performs active/reactive sensitivity matrix Sp, sq on the logic bus of the new energy electric field control area:
in the formula, n is the number of units in a new energy electric field control area, m is the number of logic buses in the new energy electric field control area, and the number of logic buses is equal to Sp: s is S ij =ΔP Ti /ΔP bj Active sensitivity to logic bus i, sq: S for active injection of new energy electric field unit j ij =ΔQ Ti /ΔQ bj Reactive sensitivity to the logic bus i is injected for reactive power of the new energy electric field unit j.
Generator controlled according to new energy electric field
Is->
Value sum reducible reactive value->
Maximum up-regulating quantity of high-voltage side control bus of new energy electric field control generator +.>
，
Maximum down-regulating quantity of high-voltage side control bus of new energy electric field control generator
，
Using a quadratic programming standard:
wherein 
Representing constraint matrix>
Representing a full matrix of constraints>
Is a three-dimensional variable->
Calculating to obtain an adjustment target value +_of a control bus of the high-voltage side of the new energy electric field control generator>
。
Further, selecting available new energy electric field to control a high-voltage bus of the generator according to the number sent on the substation, and collecting the voltage value of the bus voltage, including:
1) High-voltage side control bus for electric field control generator for obtaining new energy fed from substation
Number->
wherein 
In->
Bus bar of corresponding number is selected +.>
；
2) High-voltage side control bus of electric field control generator for feeding new energy to collecting substation
Voltage measurement value +_>
。
Further, the calculated new energy electric field controls a control instruction of a high-voltage side control bus of the generator
And control instruction->
And issue, including:
1) Controlling a high-voltage side control bus of the generator to adjust a target value according to the calculated new energy electric field
Calculating to obtain the control increment value of the high-voltage side control bus of the new energy electric field control generator +.>
：
And satisfy the following
Calculating the regulating direction of a control bus on the high-voltage side of a new energy electric field control generator
：
Generating 1 st increment coding control instruction according to coding rule
；
According to the increment value and the adjustment direction which are required to be adjusted by calculation, the AVC master station in the increment coding control rule generates a new energy electric field control instruction code, and the code takes 3 bits or 4 bit integers:
if the encoding uses 3-bit integers, each bit value is defined as follows:
the hundred-bit value indicates the voltage regulating direction of the high-voltage bus of the new energy electric field control generator, wherein '2' indicates up regulation, '1' indicates down regulation, and other data are communication errors;
the ten-bit numerical value represents a control instruction issuing round, the numerical value is circulated from 1 to 5 in an increasing way, and the AVC master station ensures that the numerical value is different from the control instruction of the previous round when issuing the control instruction every round; the AVC new energy electric field substation stores the control instruction code of the previous round, obtains the control instruction code of the new round, and if the ten-bit value of the new control instruction code is found to be the same as the value of the previous round, or is not in an incremental cycle, or is illegal when the ten-bit value is not in the range of 1 to 5;
the number of the units represents the voltage regulation increment of the high-voltage bus of the control generator, and numbers of 0, 1, 2, … …, 7 or 8 are taken to represent the maximum value of the voltage regulation increment, and 0 represents the voltage of the high-voltage bus of the control generator which does not need to be increased and regulated currently by a new energy electric field;
2) Controlling a high-voltage side control bus of the generator to adjust a target value according to the calculated new energy electric field
And the measured voltage value of the bus voltage +.>
Calculating a control target value of a control bus of a high-voltage side of a new energy electric field control generator +.>
：
And generates the 2 nd control target coding control instruction according to the rule coding rule
；
The AVC master station in the control target coding rule generates a new energy electric field control instruction code according to the increment value and the adjustment direction which are required to be adjusted by calculation, and codes a 5-bit integer:
generating a new energy electric field control instruction code, wherein the code takes 5-bit integer:
usually, the new energy electric field master station adopts 5-bit integers by adopting codes, and numerical values of each bit are defined as follows:
the tens of thousands of digits value represents a control instruction issuing round, the value is circulated from 1 to 3 in an increasing way, and the AVC master station ensures that the digits value is different from the control instruction of the previous round when issuing the control instruction every round; the AVC new energy electric field substation stores the control instruction code of the previous round, acquires the control instruction code of the new round, and if the tens of thousands of digits of the new control instruction code are found to be the same as the value of the previous round, or are not in incremental cycle, or are illegal control instructions if the tens of thousands of digits are not in the range of 1 to 3;
thousand, hundred, ten and one represent the values obtained by multiplying the target value of the voltage of the high-voltage bus of the control generator by 10.
3) Will be
and />
Two groups of control instructions are issued to the new energy electric field AVC substation simultaneously;
further, the new energy electric field AVC substation analyzes the incremental coding and control target value instruction issued by the master station according to the decoding rule, and generates the new energy electric field AVC substation execution instruction after selection, including:
1) The new energy electric field AVC substation decodes and analyzes the increment coding instruction issued by the master station according to the increment coding rule to obtain a new energy electric field control target
Decoding and analyzing a control target coding instruction issued by a master station according to a control target rule>
, wherein />
Control delta value for bus voltage, +.>
Bus voltage control value target value.
2) Collecting a current voltage measurement value of a high-voltage side bus of a new energy electric field
Comparing to obtain new energy electric field AVC substation execution target value +.>
；
3) New energy electric field AVC substation execution instruction generated after new energy electric field control subsystem execution selection
And the voltage is automatically controlled. />
According to the automatic voltage control method of the new energy electric field based on the double instructions, which is provided by the invention, the problem that the control targets of the AVC master station and the AVC substation of the new energy electric field in the automatic voltage control of the new energy electric field are inconsistent is solved, so that the safety of reactive voltage control is improved, and the running stability of an electric power system is further improved.
As shown in fig. 3, a second embodiment of the present invention provides a new energy electric field automatic voltage control device 10 based on dual instructions, including:
the model construction module 100 is used for constructing a new energy electric field control area model based on the running state and measurement data of each device acquired in the power system;
the first calculation module 200 is configured to perform optimal power flow calculation on the new energy electric field control region model by the new energy electric field AVC master station to obtain a voltage optimization target value of a central bus of the new energy electric field control region
；
A second calculation module 300 for optimizing the target value with the voltage
The reactive voltage sensitivity of the central bus of the new energy electric field control area in the new energy electric field control area model is used as a target>
And controlling reactive power regulation capability of the generator set in the new energy electric field control area, and calculating to obtain an adjustment target value of a control bus of a high-voltage side of the new energy electric field control generator>
To generate control target coding instruction +.>
And issuing to a new energy electric field AVC substation;
the third calculation module 400 is configured to control a voltage measurement value of the generator high-voltage bus according to the new energy electric field
And adjusting the target value +.>
Calculating to obtain a control increment value of the control bus control of the high-voltage side control generator controlled by the new energy electric field
To generate control increment coding instruction +>
And issuing to a new energy electric field AVC substation;
the instruction control module 500 is configured to obtain a control target encoding instruction according to a decoding rule by the new energy electric field AVC substation
And control delta code instruction->
Analyzing the command execution result corresponding to the obtained voltage control command to realize automatic voltage control of the new energy electric field based on the double commands.
Preferably, the calculation formula of the new energy electric field control region model is as follows:
in the formula ,
electric field control region model for new energy on power grid side，/>
Is a central bus in a new energy electric field control area, < ->
Is the total number of central buses in the area, +.>
For new energy electric field control generator in new energy electric field control area, < >>
Is the total electric field of new energy source->
Control bus bar for controlling high-voltage side of generator for electric field of new energy source,/for controlling high-voltage side of generator for electric field of new energy source>
The total number of the high-voltage side buses.
According to the automatic voltage control device of the new energy electric field based on the double instructions, which is provided by the invention, the problem that the control targets of the AVC master station and the AVC substation of the new energy electric field in the automatic voltage control of the new energy electric field are inconsistent is solved, so that the safety of reactive voltage control is improved, and the running stability of an electric power system is further improved.
An embodiment of a third aspect of the present invention provides an electronic device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the method as described in the embodiments of the first aspect when the program is executed.
An embodiment of a fourth aspect of the present invention proposes a computer readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements a method as described in the embodiment of the first aspect.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
Claims (10)
1. The automatic voltage control method of the new energy electric field based on the double instructions is characterized by comprising the following steps:
step S1, a new energy electric field control area model is constructed based on the running state and measurement data of each device acquired in the electric power system;
step S2, the new energy electric field AVC master station calculates the optimal power flow of the new energy electric field control area model to obtain a voltage optimization target value of a central bus of the new energy electric field control area;
step S3, taking the voltage optimization target value as a target, calculating to obtain an adjustment target value of a control bus of a high-voltage side of the new energy electric field control generator based on reactive voltage sensitivity of a central bus of the new energy electric field control region in the new energy electric field control region model and reactive power adjustment capability of a control generator set in the new energy electric field control region so as to generate a control target coding instruction, and issuing the control target coding instruction to a new energy electric field AVC substation;
step S4, calculating a control target value of the control bus control of the high-voltage side of the new energy electric field control generator according to the voltage measurement value and the adjustment target value of the high-voltage bus of the new energy electric field control generator so as to generate a control increment coding instruction, and issuing the control increment coding instruction to an AVC substation of the new energy electric field;
and S5, acquiring an instruction execution result corresponding to a voltage control instruction obtained by analyzing the control target coding instruction and the control increment coding instruction by the new energy electric field AVC substation according to the decoding rule so as to realize automatic voltage control of the new energy electric field based on the double instructions.
2. The method according to claim 1, wherein the expression of the new energy electric field control region model is:
in the formula ,
for the new energy electric field control area model of electric wire netting side, < ->
Is a central bus in a new energy electric field control area, < ->
Is the total number of central buses in the area, +.>
For new energy electric field control generator in new energy electric field control area, < >>
Is the total electric field of new energy source->
Control bus bar for controlling high-voltage side of generator for electric field of new energy source,/for controlling high-voltage side of generator for electric field of new energy source>
The total number of the high-voltage side buses.
3. The method according to claim 1, wherein the step S3 comprises:
calculating the maximum up-regulating quantity of a control bus of a high-voltage side of a new energy electric field control generator
And maximum downregulation->
：
wherein ,
new energy electric field control generator in new energy electric field control area>
For->
Reactive voltage sensitivity of a strip neutral bus, +.>
Generator controlled by electric field for new energy>
Is increased by reactive value,/>
Generator controlled by electric field for new energy>
Is a reducible reactive value;
calculating to obtain an adjustment target value of a control bus of the high-voltage side of the new energy electric field control generator by using a secondary planning standard type
：
The quadratic programming standard type:
wherein 
Representing constraint matrix>
Representing a full matrix of constraints>
For controlling the variable constraint condition matrix, calculating to obtain an adjustment target value +_of a control bus of a high-voltage side of the new energy electric field control generator>
。
4. The method according to claim 1, wherein the step S4 comprises:
according to the adjustment target value
And voltage measurement>
Calculating to obtain a control target value +.f of a control bus of a high-voltage side of the new energy electric field control generator>
：
To obtain control increment code instruction
；
Encoding control increments into instructions
And the new energy electric field AVC substation is issued.
5. The method according to claim 1, wherein the step S5 comprises:
coding instructions according to the control targets
Obtaining a voltage control target value of a high-voltage side bus of the new energy electric field control generator>
Decoding and analyzing control increment coding instruction issued by a master station according to increment coding rules>
Obtaining the voltage control increment value of the high-voltage side bus of the new energy electric field control generator>
；
Controlling voltage measurement value of high-voltage side bus of generator by using new energy electric field
And the voltage control increment value +>
Summation is then carried out with the target value of the voltage control value +.>
A comparison selection is made, and a control execution target value +.>
The method comprises the steps of carrying out a first treatment on the surface of the Acquiring new energy electric field AVC substation based on the control execution target value +.>
And the generated voltage control instruction corresponds to an instruction execution result so as to realize automatic voltage control.
6. The method of claim 5, wherein the new energy electric field is used to control the voltage measurement of the high side bus of the generator
And the voltage control increment value +>
Summation is then carried out with the target value of the voltage control value +.>
A comparison selection is made, and a control execution target value +.>
Comprising:
if it is
Then select the voltage control value target value +.>
As execution target +.>
；
If it is
Then select the voltage measurement value +.>
And a voltage control increment value->
The summed value is taken as execution target +.>
。
7. The utility model provides a new forms of energy electric field automatic voltage control device based on two instructions which characterized in that includes:
the model construction module is used for constructing a new energy electric field control area model based on the running state and measurement data of each device acquired in the electric power system;
the first calculation module is used for carrying out optimal power flow calculation on the new energy electric field control area model by the new energy electric field AVC master station to obtain a voltage optimization target value of a central bus of the new energy electric field control area;
the second calculation module is used for taking the voltage optimization target value as a target, calculating and obtaining an adjustment target value of a control bus of a high-voltage side of the new energy electric field control generator based on reactive voltage sensitivity of a central bus of the new energy electric field control area in the new energy electric field control area model and reactive power adjustment capability of the control generator set in the new energy electric field control area so as to generate a control target coding instruction, and issuing the control target coding instruction to the new energy electric field AVC substation;
the third calculation module is used for calculating a control increment value controlled by the high-voltage side control bus of the new energy electric field control generator according to the voltage measurement value and the adjustment target value of the high-voltage bus of the new energy electric field control generator so as to generate a control increment coding instruction and issuing the control increment coding instruction to the new energy electric field AVC substation;
the instruction control module is used for acquiring an instruction execution result corresponding to a voltage control instruction obtained by analyzing the control target coding instruction and the control increment coding instruction by the new energy electric field AVC substation according to the decoding rule so as to realize automatic voltage control of the new energy electric field based on the double instructions.
8. The apparatus of claim 7, wherein the expression of the new energy electric field control region model is:
in the formula ,
for the new energy electric field control area model of electric wire netting side, < ->
Is a central bus in a new energy electric field control area, < ->
Is the total number of central buses in the area, +.>
For new energy electric field control generator in new energy electric field control area, < >>
Is the total electric field of new energy source->
Control bus bar for controlling high-voltage side of generator for electric field of new energy source,/for controlling high-voltage side of generator for electric field of new energy source>
The total number of the high-voltage side buses.
9. An electronic device, comprising: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor executing the program to perform the dual instruction based new energy electric field automatic voltage control method of any one of claims 1 to 7.
10. A computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the dual instruction-based new energy electric field automatic voltage control method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310380638.1A CN116093962B (en) | 2023-04-11 | 2023-04-11 | Automatic voltage control method and device for new energy electric field based on double instructions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310380638.1A CN116093962B (en) | 2023-04-11 | 2023-04-11 | Automatic voltage control method and device for new energy electric field based on double instructions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116093962A true CN116093962A (en) | 2023-05-09 |
| CN116093962B CN116093962B (en) | 2023-07-07 |
Family
ID=86187320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310380638.1A Active CN116093962B (en) | 2023-04-11 | 2023-04-11 | Automatic voltage control method and device for new energy electric field based on double instructions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116093962B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064553A (en) * | 2011-01-13 | 2011-05-18 | 华北电网有限公司 | Control command code based automatic substation voltage control method |
| CN102088269A (en) * | 2011-01-13 | 2011-06-08 | 清华大学 | Power plant automatic voltage control method based on control instruction code |
| CN102170136A (en) * | 2011-04-25 | 2011-08-31 | 贵州电力调度通信局 | Power station voltage reactive power master-slave double-command control method |
| JP2014090651A (en) * | 2012-10-31 | 2014-05-15 | Fuji Electric Co Ltd | Voltage control device, voltage control system, voltage control program, and voltage control method for distribution system |
| CN104300544A (en) * | 2014-09-26 | 2015-01-21 | 国家电网公司 | Wind power plant automatic voltage control method based on instruction encoding |
| CN105375513A (en) * | 2015-11-06 | 2016-03-02 | 国家电网公司 | Automatic 110kV wind power field voltage control method based on real-time online equivalence |
| CN109361242A (en) * | 2018-12-24 | 2019-02-19 | 国网北京市电力公司 | A kind of photovoltaic power generation automatic voltage control method |
| CN115378026A (en) * | 2022-07-25 | 2022-11-22 | 国网天津市电力公司电力科学研究院 | Power grid secondary voltage control method for new energy collection area |
-
2023
- 2023-04-11 CN CN202310380638.1A patent/CN116093962B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064553A (en) * | 2011-01-13 | 2011-05-18 | 华北电网有限公司 | Control command code based automatic substation voltage control method |
| CN102088269A (en) * | 2011-01-13 | 2011-06-08 | 清华大学 | Power plant automatic voltage control method based on control instruction code |
| CN102170136A (en) * | 2011-04-25 | 2011-08-31 | 贵州电力调度通信局 | Power station voltage reactive power master-slave double-command control method |
| JP2014090651A (en) * | 2012-10-31 | 2014-05-15 | Fuji Electric Co Ltd | Voltage control device, voltage control system, voltage control program, and voltage control method for distribution system |
| CN104300544A (en) * | 2014-09-26 | 2015-01-21 | 国家电网公司 | Wind power plant automatic voltage control method based on instruction encoding |
| CN105375513A (en) * | 2015-11-06 | 2016-03-02 | 国家电网公司 | Automatic 110kV wind power field voltage control method based on real-time online equivalence |
| CN109361242A (en) * | 2018-12-24 | 2019-02-19 | 国网北京市电力公司 | A kind of photovoltaic power generation automatic voltage control method |
| CN115378026A (en) * | 2022-07-25 | 2022-11-22 | 国网天津市电力公司电力科学研究院 | Power grid secondary voltage control method for new energy collection area |
Non-Patent Citations (1)
| Title |
|---|
| 王辉: ""自动电压控制技术（AVC）在秦皇岛热电厂的应用研究"", 《中国优秀硕士学位论文全文数据库 工程科技II辑》, no. 6, pages 042 - 672 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116093962B (en) | 2023-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11326579B2 (en) | Adaptive dynamic planning control method and system for energy storage station, and storage medium | |
| CN107301472B (en) | Distributed photovoltaic planning method based on scene analysis method and voltage regulation strategy | |
| Khatod et al. | Evolutionary programming based optimal placement of renewable distributed generators | |
| CN110729770A (en) | Active power distribution network load fault recovery strategy optimization algorithm | |
| Džamarija et al. | Autonomous curtailment control in distributed generation planning | |
| CN109713688B (en) | Large power grid static voltage stabilization online prevention control method and system | |
| WO2012048736A1 (en) | Controlling an electrical energy supply network | |
| CN112994022A (en) | Source-storage-load distributed cooperative voltage control method and system thereof | |
| CN104376377A (en) | Power distribution network distributed power source management method based on particle swarm optimization algorithm | |
| CN104037761A (en) | AGC power multi-objective random optimization distribution method | |
| CN105939017B (en) | The practical application method for solving of the idle work optimization of intersegmental coupling during consideration | |
| Maity et al. | Optimal sizing and placement of wind farm in a radial distribution network considering reliability, operational, economic and environmental factors | |
| CN116093962B (en) | Automatic voltage control method and device for new energy electric field based on double instructions | |
| CN107516901B (en) | Method for coordinating voltage control among 500kV transformer substations in automatic voltage control | |
| US20230344242A1 (en) | Method for automatic adjustment of power grid operation mode base on reinforcement learning | |
| KR101618918B1 (en) | FACTS device operating point control apparatus and method | |
| Pippi et al. | Assessing the provision of ancillary services considering BES capacity degradation | |
| CN111723980A (en) | Power distribution network transformer substation capacity optimization method for large-scale load regulation | |
| CN115953058A (en) | Light storage integrated charging station planning method, system and medium | |
| CN107590211B (en) | Intelligent power grid information system | |
| Gouin et al. | Benefits of load shedding for distribution grids investments planning | |
| CN112003288B (en) | Intelligent voltage adjustment method and device for power grid operation mode | |
| CN111563699B (en) | Power system distribution robust real-time scheduling method and system considering flexibility requirement | |
| CN113762622A (en) | Virtual power plant access point and capacity optimization planning method | |
| Zheng et al. | A comprehensive decision-making method for coordinated transmission and distribution network planning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |