CN109038657B - Processing method, device, server and medium for primary system of offshore wind farm - Google Patents
Processing method, device, server and medium for primary system of offshore wind farm Download PDFInfo
- Publication number
- CN109038657B CN109038657B CN201810803513.4A CN201810803513A CN109038657B CN 109038657 B CN109038657 B CN 109038657B CN 201810803513 A CN201810803513 A CN 201810803513A CN 109038657 B CN109038657 B CN 109038657B
- Authority
- CN
- China
- Prior art keywords
- data
- processing
- electrical
- wind farm
- offshore
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000003672 processing method Methods 0.000 title abstract description 9
- 238000012545 processing Methods 0.000 claims abstract description 182
- 238000013461 design Methods 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 39
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000004364 calculation method Methods 0.000 claims description 53
- 230000005540 biological transmission Effects 0.000 claims description 51
- 238000005457 optimization Methods 0.000 claims description 37
- 238000004590 computer program Methods 0.000 claims description 23
- 238000004422 calculation algorithm Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 5
- 238000004804 winding Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- 239000002689 soil Substances 0.000 description 6
- 238000012937 correction Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000002940 Newton-Raphson method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010033307 Overweight Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000011837 external investigation Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- H02J3/386—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a processing method, a device, a server and a storage medium for a primary system of an offshore wind farm, wherein the method comprises the following steps: acquiring first electrical data of an offshore wind farm; processing the first electrical data according to a preset data processing rule to generate second electrical data; and carrying out electrical design processing on the primary system of the offshore wind farm according to the second electrical data. According to the processing method, the processing device, the server and the storage medium of the primary system of the offshore wind farm, the first electrical data are processed through the preset data processing rule to obtain the second electrical data, and the primary system of the offshore wind farm is electrically designed and processed according to the second electrical data, so that the electrical design of the primary system of the offshore wind farm is more accurate and effective.
Description
Technical Field
The invention relates to the technical field of wind power, in particular to a processing method, a processing device, a processing server and a processing medium for a primary system of an offshore wind farm.
Background
Since offshore wind power resources are rich, wind speed is stable, and an offshore wind power unit is far away from the coast, large-scale development and large-scale unit manufacturing can be realized without causing large visual interference, and offshore wind power is a popular development direction of power systems in recent years.
At present, the once design optimization technology of the offshore wind farm is deficient. Many offshore wind farms still adopt the design rules of traditional onshore wind farms to carry out primary electrical design, so that electrical design cannot be well carried out according to the characteristics of offshore wind farms, optimal configuration cannot be carried out on offshore wind farm equipment resources, and wind resources cannot be utilized to the greatest extent, thereby causing resource waste.
Therefore, how to design a primary system of an offshore wind farm in a targeted manner according to the electrical characteristics of the offshore wind farm is a problem which needs to be solved urgently at present.
Disclosure of Invention
In view of the above, it is necessary to provide a method, an apparatus, a server, and a medium for processing a primary system of an offshore wind farm, which can design and process the primary system of the offshore wind farm in a targeted manner according to the electrical characteristics of the offshore wind farm.
A processing method of an offshore wind farm primary system comprises the following steps: acquiring first electrical data of an offshore wind farm; processing the first electrical data according to a preset data processing rule to generate second electrical data; and carrying out electrical design processing on the primary system of the offshore wind farm according to the second electrical data.
According to the method, the first electrical data are processed through the preset data processing rule to obtain the second electrical data, and the primary system of the offshore wind farm is electrically designed and processed according to the second electrical data, so that the electrical design of the primary system of the offshore wind farm is more accurate and effective.
A processing apparatus for a primary system of an offshore wind farm, the apparatus comprising: the acquisition module is used for acquiring first electrical data of an offshore wind farm; the first processing module is used for processing the first electrical data according to a preset data processing rule to generate second electrical data; and the second processing module is used for electrically processing the primary system of the offshore wind farm according to the second electrical data.
In one embodiment, the first electrical data includes fan layout parameters, wind farm parameters, and booster station parameters; the first processing module comprises a comprehensive processing unit and is used for processing the fan layout parameters, the wind field parameters and the booster station parameters according to preset data processing rules to generate current collection system topology data, offshore booster station site selection data and high-voltage power transmission system processing data.
A server comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any one of the methods described above when executing the program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of any of the methods described above.
Drawings
Fig. 1 is a schematic flow chart of a processing method of a primary system of an offshore wind farm according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a power flow calculation method according to an embodiment of the invention;
fig. 3 is a schematic flow chart of generating reactive compensation data according to an embodiment of the present invention;
fig. 4 is a schematic configuration diagram of a compensation point of a reactive power compensation device according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating the generation of emergency power capacity data according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a processing device of a primary system of an offshore wind farm according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a server according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In one embodiment, as shown in fig. 1, a method for processing a primary system of an offshore wind farm is provided, which specifically includes the following steps:
and S120, acquiring first electrical data of the offshore wind farm.
In particular, the first electrical data is a primary parameter, i.e. electrical data of a primary device of the offshore wind farm. The first electrical data may be one or more sets of data, for example, the first electrical data includes, but is not limited to: at least one of fan layout data, wind field basic information data, booster station parameters and the like of the offshore wind farm.
The first electrical data is directly acquired in the field or acquired from a database or other equipment.
And S140, processing the first electrical data according to a preset data processing rule to generate second electrical data.
In this step, according to a preset data processing rule, a group of first electrical data can be processed to generate one or more groups of second electrical data; alternatively, the plurality of sets of first electrical data may be processed to generate one or more sets of second electrical data.
Wherein the preset data processing rule comprises one or more sub-rules. For example, the preset data processing rule includes at least one of a comprehensive processing rule of a current collection system, an offshore booster station and a high-voltage power transmission system, an electrical main wiring optimization design rule, a power flow calculation rule, a short circuit calculation rule, a reactive compensation optimization design rule, a diesel engine capacity calculation rule, a lightning protection grounding calculation rule and the like.
For example, the preset rule is the specification and standard of the primary design of the offshore wind farm electrical, so that the obtained second electrical data can conform to the specification and standard of the primary design of the offshore wind farm electrical.
And S160, performing electrical design processing on the primary system of the offshore wind farm according to the second electrical data.
The primary system refers to a system formed by connecting primary devices to form power generation, power transmission, power distribution or other production processes. For example, primary systems include wind turbines, generators, transformers, circuit breakers, disconnectors, reclosers, contactors, knife switches, buses, transmission lines, power cables, reactors, motors, and the like, as primary devices. The design processing of the electric appliances of the primary system comprises at least one of the design of site selection, type selection, arrangement, wiring and the like of primary equipment, and relates to one or more processes of calculation of short-circuit current of a power system, load calculation, land acquisition and routing of a power plant substation or a power transmission line/power cable and the like.
For example, in this step, the electrical design process for the primary system of the offshore wind farm includes at least one of topology optimization process for the power collection system of the offshore wind farm, site selection of the offshore booster station, optimization process for the high-voltage power transmission system, main wiring process for the offshore booster station, main wiring process for the farm power, and reactive compensation process, based on the generated second parameter.
In the above embodiment, the first electrical data is processed by the preset data processing rule to obtain the second electrical data, and the primary system of the offshore wind farm is electrically designed and processed according to the second electrical data, so that the electrical design of the primary system of the offshore wind farm is more accurate and effective.
In one embodiment, the first electrical data includes fan layout parameters, wind farm parameters, and booster station parameters; the step S140 includes: and processing the fan layout parameters, the wind field parameters and the booster station parameters according to preset data processing rules to generate current collection system topology data, offshore booster station site selection data and high-voltage power transmission system processing data.
The wind field parameters and the booster station parameters respectively represent basic information of the wind field and basic information of a booster station of an access system. In the step, the mutual influence among the wind field fan layout, the wind field basic information and the booster station basic information is comprehensively considered, second electrical data are generated, the second electrical data comprise current collection system topology data, offshore booster station site selection data and high-voltage power transmission system processing data, and the current collection system, the offshore booster station and the high-voltage power transmission system are comprehensively and optimally designed. For example, the second electrical data includes a collection system topology optimization report, a marine booster station site selection map, and a high voltage power transmission system project optimization design report. For another example, the collection system topology optimization report includes 35kV collection line path, line model and length, the offshore booster station site selection map includes the locations of the onshore centralized control center and the offshore booster station, and the high-voltage transmission system scheme optimization design report includes the submarine cable path, line model and length.
Correspondingly, step S160 includes performing topology optimization processing of the current collection system, site selection processing of the offshore booster station, and optimization processing of the high voltage power transmission system on the primary system of the offshore wind farm, respectively, according to the topology data of the current collection system, the site selection data of the offshore booster station, and the processing data of the high voltage power transmission system.
In one embodiment, the preset data processing rules include a topology optimization algorithm of the power collection system and a power transmission system optimization algorithm. The essence of the topological optimization algorithm of the current collection system is to find an optimal topological connection scheme meeting certain economic and reliability indexes. The optimization algorithm of the power transmission system searches an optimal path in a two-dimensional space, and discretization of the search space is required. For example, discretization of a continuous space is realized through gridding, barrier information and information of a high-weight area are respectively assigned to each grid, and a shortest path algorithm with weight is operated on the grids, so that an optimal path under the current gridding mode can be obtained. And if the joint optimization adopts a particle swarm algorithm, the adaptive value is composed of the economic index and the reliability index of the current collection system. And stopping iteration when the iteration reaches a certain number of times or the adaptive value is within an acceptable range, and outputting the final particle position, namely the optimal position of the offshore booster station.
In one embodiment, the step S140 includes: and processing the first electrical data according to a preset data processing rule to generate main wiring data of the offshore booster station and main wiring data of the field electricity utilization electrical.
The first electrical data comprise booster station parameters, current collection system design data and high-voltage power transmission system design data. In the step, according to a preset data processing rule, the booster station parameters, the current collection system design data and the high-voltage power transmission system design data are processed to generate main wiring data of the offshore booster station and main wiring data of the field power utilization electric appliance. For example, according to basic information of the access system booster station, a current collection system design scheme, a high-voltage power transmission system design scheme and field power load information, technical indexes and economic indexes are comprehensively considered, an optimal main electric wiring scheme and a main electric wiring scheme for field power utilization of the offshore booster station are determined through calculation, and the type selection of relevant equipment is determined. As another example, at least two alternative wiring schemes are provided based on generating offshore booster station main wiring data and field power main wiring data. And analyzing and comparing at least two alternative schemes according to the technical index and the economic index, selecting the most appropriate access system scheme, and finally determining the optimal main electric wiring scheme. Wherein the technical indexes comprise the number of equipment, investment cost, power loss, voltage loss degree, reliability and the like; the economic indicators include total cost of equipment, sea expenses, etc.
Correspondingly, step S160 includes performing electrical wiring processing on the primary system of the offshore wind farm according to the generated offshore booster station main wiring data and the farm electricity main wiring data.
In one embodiment, the step S140 further includes: and according to a preset data processing rule, carrying out load flow calculation processing on the first electrical data, the offshore booster station main wiring data and the field power utilization electrical main wiring data to generate cable voltage drop data.
The operation conditions of the power system of the offshore wind farm under various working conditions can be obtained through load flow calculation, and the operation conditions are used for analyzing the steady-state operation conditions of the power system of the wind farm. And determining the operation states of all parts of the whole power system according to given operation conditions and system wiring conditions, such as the voltage of each bus, the power flowing through each element, the power loss of the system and the like.
In one embodiment, cable voltage drop calculation data is output after data preprocessing and load flow calculation according to basic information of the wind power plant, current collection system parameters, offshore booster station parameters, high-voltage transmission system parameters and electrical main wiring design parameters, and the cable voltage drop calculation data can be used for performing reactive power compensation optimization design on an offshore wind power plant primary system.
In one embodiment, the power flow calculation of step S140 includes the following steps: inputting original data, wherein the original data comprise fan parameters, power transmission equipment parameters, boosting transformer equipment parameters, a connection topological structure of a power collection system and a booster station wiring scheme and the like. And generating a matrix, specifically, generating a bus impedance matrix, a fan power supply parameter matrix and a branch admittance matrix in the form of per unit values of the line, the transformer impedance and the admittance according to the topological structure. And performing load flow calculation according to the matrixes to generate load flow calculation data, wherein the load flow calculation data comprises power distribution and power loss of each branch, total power loss of the network, and amplitude and phase angle of each node voltage.
In one embodiment, the power flow calculation in this step can use a P-Q decomposition method.
The P-Q decomposition method is a simplified method for load flow calculation of the Newton-Raphson method, and the Newton-Raphson method is simplified by utilizing some special operating characteristics of a power system, so that the calculation speed can be improved.
According to the following characteristics of the actual operation of the power system: typically the reactance on the network is much larger than the resistance, small changes in the amplitude of the system bus voltage have little effect on the change in power usage. Also, changes in the phase angle of the bus voltage have less effect on the reactive power. Therefore, using the P-Q decomposition method, the nodal power equation, when expressed in polar form, can be simplified to:
the P-Q decomposition method separates P, Q for iterative computation, thus greatly reducing the computational effort. H, L will still change during the iteration and again are asymmetric matrices. To further simplify the calculation, one embodiment is to simplify the coefficient matrix in the above equation to a symmetric matrix that is invariant during the iteration.
The phase angle theta of the voltage across the line under normal conditionsijIs not so large, so it can be considered that:
cosθij≈1
Gij sinθij＝Bij
in view of the above relationship, it is possible to obtain:
Hij＝UiBijUj
Lij＝UiBijUj
the power increment of the node is:
the P-Q decomposition method replaces the original 2n-m-1 order linear equation set with an n-1 order and an n-m-1 order linear equation set; modifying the coefficient matrixes B 'and B' of the equation into symmetrical constant matrixes, and keeping the coefficient matrixes unchanged in the iteration process; the P-Q decomposition method has a linear convergence characteristic, and requires a larger number of iterations to converge to the same accuracy as compared with the newton-raphson method.
For example, as shown in fig. 2, the power flow calculation by using the P-Q decomposition method specifically includes the following steps:
s201, inputting original data.
S202, generating matrixes B 'and B'.
S203, setting the initial value of the PQ node voltage and the initial value of the voltage phase angle of each node.
And S204, setting the iteration count n to be 0, setting Kp to be 1, and setting Kq to be 1.
And S205, calculating the unbalanced active power.
S206, judging whether max { | Δ Pi k|}＜εpIs there a If yes, go to step S207, otherwise go to step S216.
And S207, solving the correction equation and correcting the phase angle of the post-voltage.
And S208, setting Kq to 1.
And S209, calculating the unbalanced reactive power.
And S210, judging whether the reactive convergence condition is met, if so, turning to the step S211, and otherwise, turning to the step S213.
And S211, setting Kq to 0.
S212, determine whether Kp is 0? If yes, step S215 is performed, otherwise step S214 is performed.
And S213, solving the correction equation to obtain the corrected voltage.
S214, sets Kp equal to 1 and k equal to k + 1.
And S215, calculating and outputting the balance node power and all line powers.
S216 sets Kp to 0.
S217, determine whether Kq is 0? If yes, go to step S215, otherwise go to step S209.
In one embodiment, the step S140 further includes: and processing the first electrical data and the cable voltage drop data according to a preset data processing rule to generate reactive compensation data.
In this embodiment, the first electrical data includes current collection system parameters, offshore booster station parameters, high-voltage transmission system parameters, electrical main connection data and cable voltage drop data, the offshore wind farm is divided into medium-voltage system reactive compensation and high-voltage system reactive compensation according to the principle that the first electrical data and reactive power are balanced locally, the reactive compensation types and capacities of the medium-voltage system and the high-voltage system of the offshore wind farm are calculated respectively when the offshore wind farm is at maximum output and minimum output, and reactive compensation data are output. The compensation points of the reactive compensation of the medium-voltage system and the reactive compensation of the high-voltage system are respectively arranged on the low-voltage side of the offshore booster station and on the land centralized control center.
For example, as shown in fig. 3, the step of processing the first electrical data and the cable voltage drop data according to the preset data processing rule to generate the reactive compensation data includes: and determining an operation mode. For example, a maximum output mode and a minimum output mode are determined. And under the maximum output operation mode, calculating and generating capacitive reactive compensation capacity data of the high-voltage system. And calculating and generating the inductive reactive compensation capacity data of the high-voltage system in the minimum output operation mode.
Accordingly, step S160 is to perform reactive power compensation on the primary system of the offshore wind farm according to the generated reactive compensation data.
In this embodiment, the current collecting system parameters include a current collecting system submarine cable equipment length and parameter data table, and a current collecting system topology path diagram; the parameters of the high-voltage power transmission system comprise the length of the high-voltage submarine cable equipment and a parameter data table; the electric main wiring data comprises an electric main wiring diagram and a main transformer parameter data table. The input data, namely the first electrical data, further comprise a fan parameter data table, a wind driven generator box type transformer parameter data table and alternative reactive compensation equipment parameters.
In this embodiment, the reactive power to be compensated for by the offshore wind farm mainly depends on the reactive power generated or consumed in the offshore wind farm, and the main devices include a transformer, a transmission line, and a fan system, and the characteristics of these devices are as follows:
1. a transformer: the main transformer comprises a box transformer of a fan and a booster station. Reactive power is consumed in no-load and normal operation, and the reactive loss Q isTInvolving exciting reactive losses Q0Reactive loss Q in sum leakage reactanceTRegardless of the resistance in the Γ -type equivalent circuit, the reactive loss equation of the transformer is:
in the formula I0% is the percent of no-load current, U1Is the voltage of the primary side, XBFor the excitation reactance, S is the power delivered by the transformer, XTIs the short circuit impedance of the system.
2. Transmission line: the unit distance transmission line can be equivalent to a pi-type circuit. The reactive loss on the unit line comprises reactive loss in series reactance and parallel susceptance. Since the voltages on the transmission line all fluctuate near the rated voltage, it can be assumed that the transmission line is operating at the rated voltage, i.e., V1＝V2The reactive loss on the transmission line is given by V:
in the formula, QLReactive loss, Q, generated for equivalent reactance of current collection system and high voltage submarine cableBThe reactive loss generated by the equivalent susceptance, B is the equivalent susceptance per unit length, X is the equivalent reactance per unit length,
is the charging power per transmission line and L is the transmission line length.
3. A fan system: each fan is dynamically adjustable within the range of leading the power factor by 0.95-lagging the power factor by 0.95, so that the reactive loss of the fan system of the wind power plant is as follows: -0.312PWFN≤QWF≤+0.312PWFNIn the formula PWFNThe rated power of the full power of the wind power plant fan is obtained.
In this embodiment, the preset data processing rule includes a wind farm reactive power calculation rule, a reactive compensation device characteristic, and a compensation principle. The method comprises the following specific steps:
1. and (5) calculating reactive power of the wind power plant. According to GB/T-19963 plus 2011 'technical Specification for accessing wind power plant to electric power system', no clear requirement is made on the reactive power regulation capability of a fan, so that the fan does not participate in the reactive power regulation to configure the capacity of a reactive power compensation device, and the reactive power Q consumed by the wind power plant is as follows:
Q＝QT+QL+QB
the reactive power consumed by the wind power plant mainly depends on grid-connected voltage U and wind power plant active output PWF. When P is presentWF＝0，QWF＝0，U＝UmaxThe reactive loss of the wind power plant is QmimAt the moment, the reactive loss of the transmission line and the transformer is minimum, and the capacitive charging power of the wind power plant is maximum; when P is presentWF＝PWFN，QWF＝0，U＝UminThe reactive loss of the wind power plant is QmaxAt the moment, the reactive loss of the transmission line and the transformer is maximum, and the capacitive charging power of the wind power plant is minimum. The capacity of the reactive equipment configuration can compensate the operation of the wind power plantQmaxAnd QminStatus.
2. Reactive compensation equipment characteristics and compensation principles. The main modes of offshore wind power reactive compensation comprise: 1) a reactive power compensation device is arranged on the low-voltage side of the offshore booster station; 2) a reactive power compensation device is configured in a land centralized control center; 3) reactive power compensation devices are arranged on the low-voltage side of the offshore booster station and on-land centralized control centers. For example, the compensation points are shown in fig. 4.
The reactive compensation equipment commonly used at present mainly comprises a shunt capacitor/reactor, a static dynamic reactive generator (SVG), a TCR type high-voltage dynamic reactive compensation device (SVC), an on-load voltage regulation reactive compensation system and the like, and the equipment characteristics are shown in the following table 1:
table 1: wind power plant reactive compensation equipment characteristic analysis meter
The technology of the prior SVG product is mature day by day, the power and voltage grade are improved, the compensation characteristic is continuously adjustable, and the occupation area is small, so that the SVG product becomes the prior choice of offshore wind power reactive compensation equipment in recent years; however, SVG is currently expensive and has a certain failure rate, so it can be compensated by matching with a parallel capacitor/electric controller.
In one embodiment, the step S140 further includes: and according to a preset data processing rule, performing short-circuit calculation processing on the first electrical data, the offshore booster station main wiring data and the field power utilization electrical main wiring data to generate short-circuit current data.
The first electrical data comprise parameters of a wind power plant, parameters of a current collection system, parameters of an offshore booster station and parameters of a high-voltage transmission system. In the step, wind power plant parameters, current collection system parameters, offshore booster station parameters, high-voltage power transmission system parameters, main connection data of the offshore booster station and main connection data of field power utilization electric power are input, four short-circuit working conditions of a three-phase short circuit, a two-phase grounding short circuit, a two-phase short circuit and a single-phase grounding short circuit are respectively selected to calculate short-circuit current, and corresponding short-circuit current data are respectively output.
The short-circuit current data can be used for model selection and relay protection setting calculation of electrical equipment. The electrical device is selected according to the maximum possible short-circuit current in the maximum operating mode of the system.
In one embodiment, the input data for the short circuit current calculation includes: the current collection system is optimally designed: the device comprises a fan parameter data table, a box-type transformer parameter data table, a current collection medium-voltage submarine cable equipment length and parameter data table and a current collection system topological path diagram. Optimization design of a high-voltage power transmission system: length and parameter data table of high-voltage submarine cable equipment. Electric main wiring scheme: an electric main wiring diagram and a main transformer parameter data table.
In one embodiment, the output data of the short circuit current calculation includes: the short-circuit capacity, the effective value of short-circuit current, the total current, the impact current, the non-periodic components (0s and 0.4s), the positive sequence current and the positive sequence impedance when the three-phase short circuit occurs in the fan, the main high-low voltage side of the offshore booster station and the onshore centralized control center. The short-circuit capacity, the effective value of short-circuit current, the total current, the impact current, the non-periodic components (0s and 0.4s), the positive sequence current and the positive sequence impedance when the fan, the main high-low voltage side of the offshore booster station and the onshore centralized control center are subjected to asymmetric short circuit.
In one embodiment, the calculation of the element equivalent impedance includes at least one of:
1. and calculating the equivalent impedance of the fan. The positive sequence (negative sequence) impedance of the generator has the following nominal value:
ZGK＝KGZG
x″d＝ZG/(U2 rG/SrG)
wherein, x ″)dIs the relative reactance of the generator, ZGKIs the equivalent reactance of the fan, ZGIs the equivalent reactance of the fan, KGTo correct the coefficients, UnThe nominal voltage of the system is in unit kV, if the impedance of the fan is calculated, the outlet voltage of the fan is 690V, and if the impedance of the transformer is calculated, the voltage of the high-voltage side of the transformer is taken. c. CmaxFor the voltage coefficient, 1.1 was taken.
The zero sequence impedance of the generator has the following nominal value: zG(0)K＝KGZG(0)
2. And (4) calculating equivalent impedance of a winding transformer (box transformer, main transformer). The positive sequence (negative sequence) impedance nominal value (after correction) of the transformer is as follows: zTK＝KTZT
The transformer impedance has the following nominal value:
wherein, KTThe transformer impedance correction factor. c. CmaxFor the voltage coefficient, 1.1 was taken. x is the number ofT＝ZT/(U2 TNL/SrT)，xTTaking U as the relative reactance of the transformerTNHRepresenting the impedance normalized to the high voltage side. If the rated voltage of the low-voltage side is taken, the impedance of the low-voltage side is calculated.
When star-type grounding is adopted on either side of the transformer, zero-sequence current is generated.
The zero sequence impedance of the transformer has the famous values as follows: zT(0)K＝KTZT(0)。
3. And calculating equivalent impedance of the three-winding transformer (main transformer). For example, the nominal positive sequence (negative sequence) impedance (corrected) for each winding of a three-winding transformer is:
the impedance voltage percentage value of each winding of the three-winding transformer is as follows:
the impedance of each winding of the three-winding transformer has the following nominal value:
the impedance correction coefficient of each winding of the three-winding transformer is as follows:
wherein, cmaxThe voltage coefficient is determined by the nominal voltage of the power grid at the low-voltage side of the transformer.
The relative reactance of each winding of the three-winding transformer is as follows:
4. and calculating equivalent impedance of the autotransformer (main transformer). For example, the impedance voltage percentage between two autotransformer windings is:
and then the parameter calculation method is the same as that of the three-winding transformer, and the minimum short-circuit current impedance calculation method is also the same.
5. And calculating equivalent impedance of the submarine cable. The positive sequence (negative sequence) impedance has the following nominal value: z1＝z1l; zeroThe sequence impedance has the following named values: z0＝z0l. The per unit value is calculated as follows:
the per unit value of the resistance is:
the reactance per unit value is:
wherein, UbiFor the voltage reference value of each branch, UnThe line voltage grade value is equal to the average rated voltage value of each branch circuit by 1.05Un，UnThis is the line voltage class, SbIs the baseline capacity of the system.
In one embodiment, the first electrical data further includes soil resistivity data, and after the short-circuit current data is generated, the step S140 further includes: and according to a preset data processing rule, calculating the short-circuit current data and the soil resistivity data to generate lightning protection grounding data.
In the step, lightning protection grounding calculation is carried out according to the short circuit current data and the soil resistivity data, and the lightning protection grounding data are output according to the standard requirements. For example, outputting a lightning protection grounding calculation book, wherein the calculation book comprises data of a land centralized control center grounding map, a lightning protection layout map, grounding equipment type selection and the like.
In one embodiment, the first electrical data includes emergency load data, and the step S140 includes: and calculating the emergency load data according to a preset data processing rule to generate emergency power supply capacity data.
Generally, an emergency diesel generator set is important equipment for ensuring that large wind power can be safely shut down and quickly recover power supply when sudden system power failure occurs, and if power failure occurs after emergency or accident, the emergency diesel generator set can quickly recover and prolong a period of power supply time.
In this embodiment, the emergency load data includes, but is not limited to, at least one of a load name, a load size, a power factor, and a power supply time. Outputting emergency power capacity data includes, but is not limited to, at least one of a diesel genset form selection, a diesel genset capacity selection, a check of voltage levels on the bus at maximum motor start, and the like.
In one embodiment, as shown in fig. 5, the step S140 calculates emergency load data according to a preset data processing rule to generate emergency power capacity data, and specifically includes the following steps:
and S501, selecting a generator set form.
And S502, calculating the load capacity and the generator set capacity.
For example, the load capacity is calculated according to the following formula:
Sc＝K∑Pi
where K is a conversion coefficient, and K may be 0.8. ScRepresenting the calculated load capacity, which may be in kVA, for example. Sigma PiRefers to the sum of the power ratings of the safety loads, both rotating and stationary, that may be operating simultaneously when the unit is brought to an emergency shutdown. Sigma PiThe unit of (c) may be KW. PcThe active power representing the computational load is for example in kW.
To calculate the power factor of the load, 0.86 may be taken, for example.
As another example, the generator capacity calculation is performed according to the following equation. Wherein the generator power in common use should be greater than the maximum calculation load active power, i.e. Pe≥PcAnd/n. In the formula PeThe power is the common power of the diesel generating sets, and n is the number of the diesel generating sets.
And S503, selecting the model of the generator set.
And S504, judging whether the capacity of the generator set meets the preset capacity check requirement, if so, turning to the step S505, otherwise, reselecting the capacity of the generator set and turning back to the step S503.
The capacity check of this step may be a short time overload capacity check when the generator starts a motor of maximum capacity with load.
The generator can bear K in a hot stategPeAnd/cos alpha, the time is 15s, and whether the following formula is satisfied is judged:
in the formula, PDmThe rated power of the maximum motor; kqIs the starting current multiple of the maximum motor; cos alpha is the rated power factor of the generator; k is a conversion coefficient, and can take a value of 0.8; kgThe overload multiple of the diesel generator can take a value of 1.5. The establishment of the above formula indicates that the capacity of the generator set meets the preset capacity check requirement.
In one embodiment, to reflect the increased overload capability, a manufacturer-provided overload factor K may be used, taking into account that many manufacturers currently provide diesel-electric sets 15s with overload capabilities exceeding 1.5 timesgThe denominator of the formula is replaced, so that the improved overload capacity of the diesel generator set is not wasted.
And S505, judging whether the output power of the diesel engine meets a preset rechecking condition, if so, turning to the step S506, otherwise, reselecting the capacity of the generator set and turning back to the step S503.
In this step, determining whether the output power of the diesel engine meets the preset rechecking condition includes:
1. judging whether the output power meets the check condition in the continuous 1h running state
Considering that the diesel generator has a bearing during the whole plant power failure timeThe ability to carry the maximum security load. Therein, 1.1PxLoad capacity, P, allowed for 1h of diesel engineeConverting the output power of the diesel engine to the actual using place; pcCalculating the active power of the load; etaGIs the efficiency of the generator; and a is the power matching coefficient of the diesel generator set, for example, a is 1.10-1.15.
In some embodiments, it is contemplated that some factory-supplied diesel generator sets selected for standby power do not have 1h over-rating capability. Thus, the output power here may instead be by pressing PgChecking, namely judging whether the output power meets the checking condition in the continuous 1h running state
If this condition is satisfied, the diesel engine can bear the maximum security load without considering the overload capability.
According to the calculation result of the engineering, the 1h overload operation capacity check is not a restriction factor of the capacity of the diesel generator set, and the output power of the diesel engine has larger margin when the short-time overload capacity check and the first loading capacity check are met when a motor with the maximum capacity is started under load, so that the power of the diesel generator set cannot be increased.
2. And judging whether the first loading capacity of the diesel engine meets a preset condition or not.
The first loading capacity of the diesel engine generator set guaranteed by a manufacturer is not lower than 50% of rated power. Therefore, the actual output power of the diesel engine is required to be not less than 2 times of the initial starting active power, that is, the preset conditions are as follows:
in the formula, Sigma P ″)eDThe sum of the rated power of the security load which is initially input; kQCurrent multiples for starting loads, e.g. KQIs 5;
for starting the power factor of the load, e.g.
The value is 0.4.
In one embodiment, considering that the first-loaded security load includes not only a rotating load but also a static load, in order to improve the accuracy of the calculation result, the first-loaded security load can be divided into the rotating load and the static load, the static load is a starting load with a multiple of current of 1, a power factor of 0.8, and P is determined according to the sum of the starting active power of the two types of loadseWhether the requirements are met. Namely, the above-mentioned preset conditions are
In the formula: sigma PeDXThe sum of the rated power of the initially input rotary security load; sigma PeDJThe sum of the rated power of the initially-input static security load; kQXThe current multiple for starting the rotating load can take a value of 5;
the power factor for starting the rotating load may take a value of 0.4; kQJThe current multiple for starting a stationary load may take a value of 1;
to start the power factor of a stationary load, a value of 0.8 may be taken.
In this embodiment, when the two conditions are met, or at least one of the two conditions is met, it is determined that the output power of the diesel engine meets a preset rechecking condition.
And S506, judging whether the starting bus voltage of the maximum motor meets a preset voltage check condition, if so, turning to the step S507, otherwise, reselecting the capacity of the generator set and turning back to the step S503.
In order to keep the running motor on the safety bus section less affected when the largest motor starts, it is preferable to keep a certain proportion of the rated voltage not lower, for example not lower than 75% of the rated voltage. Because the bus voltage drop caused by the generator no-load starting motor is lower than that caused by the on-load starting, the generator no-load starting is taken as a checking working condition. The bus voltage level at the start of the motor is calculated according to the following equation:
in the formula, cos alpha is the rated power factor of the generator; x'dIs the transient reactance (per unit value) of the generator; u shapemIs the bus voltage level at the start of the motor.
In this embodiment, when U is usedmAnd when the voltage is larger than or equal to the preset threshold value, the starting bus voltage of the maximum motor meets the preset voltage verification condition. For example if UmAnd if the content is more than or equal to 75 percent, the check is passed.
And S507, outputting the verified diesel model parameters.
When configuring a diesel generator set, the determination of the rated power of the set, i.e. the selection of the capacity, is very important. The excessive power can cause difficulty in transportation and installation and unnecessary waste, and the maintenance workload is increased; too little power can cause the generator set to be overloaded, reduce the reliability and the service life of the generator set, and even cause accidents due to overload shutdown at key time. The capacity of the unit is reasonably selected according to the service condition of the diesel generating set and the size and the type of the power supply load, the reliability and the service life of the unit can be improved, and meanwhile, the workload of unit maintenance is reduced.
In one embodiment, as shown in fig. 6, there is provided a processing apparatus 60 of an offshore wind farm primary system, comprising: the acquisition module is used for acquiring first electrical data of an offshore wind farm; the first processing module is used for processing the first electrical data according to a preset data processing rule to generate second electrical data; and the second processing module is used for electrically processing the primary system of the offshore wind farm according to the second electrical data.
In the above embodiment, the first electrical data is processed by the preset data processing rule to obtain the second electrical data, and the primary system of the offshore wind farm is electrically designed and processed according to the second electrical data, so that the electrical design of the primary system of the offshore wind farm is more accurate and effective.
In one embodiment, the first electrical data includes fan layout parameters, wind farm parameters, and booster station parameters; the first processing module comprises a comprehensive processing unit and is used for processing the fan layout parameters, the wind field parameters and the booster station parameters according to preset data processing rules to generate current collection system topology data, offshore booster station site selection data and high-voltage power transmission system processing data.
At the moment, the second processing module respectively performs collection system topology optimization processing, offshore booster station site selection processing and high-voltage power transmission system optimization processing on the primary system of the offshore wind farm according to the collection system topology data, the offshore booster station site selection data and the high-voltage power transmission system processing data. Therefore, the current collection system topological structure, booster station site selection and power transmission system layout rationality of the offshore wind power plant can be improved
In an embodiment, the first processing module further includes an electrical main connection processing unit, configured to process the first electrical data according to a preset data processing rule, so as to generate main connection data of the offshore booster station and main connection data of the field power utilization electrical main connection.
At the moment, the second processing module performs electric wiring processing on the primary system of the offshore wind farm according to the generated main wiring data of the offshore booster station and the main electric wiring data of the farm power, so that the electric wiring reasonability of the offshore wind farm is improved.
In an embodiment, the first processing module further includes a power flow calculation unit, configured to perform power flow calculation processing on the first electrical data, the offshore booster station main connection data, and the field power utilization electrical main connection data according to a preset data processing rule, so as to generate cable voltage drop data. Therefore, reactive compensation optimization design is carried out on the primary system of the offshore wind farm according to the cable voltage drop calculation data.
In an embodiment, the first processing module further includes a reactive compensation processing unit, configured to process the first electrical data and the cable voltage drop data according to a preset data processing rule, so as to generate reactive compensation data. At the moment, the second processing module carries out reactive power compensation on the primary system of the offshore wind farm according to the generated reactive compensation data.
In an embodiment, the first processing module further includes a short-circuit current calculating unit, configured to perform short-circuit calculation processing on the first electrical data, the offshore booster station main connection data, and the field power utilization electrical main connection data according to a preset data processing rule, so as to generate short-circuit current data. The short-circuit current data can be used for model selection and relay protection setting calculation of electrical equipment. Correspondingly, the second processing module carries out model selection and relay protection setting calculation on the electrical equipment according to the short-circuit current data.
In an embodiment, the first processing module further includes an emergency power capacity processing unit, configured to calculate emergency load data according to a preset data processing rule, and generate emergency power capacity data. Correspondingly, the second processing module reasonably selects the unit capacity according to the emergency power supply capacity data, so that the reliability and the service life of the unit can be improved, and meanwhile, the workload of unit maintenance is reduced.
In an embodiment, the first processing module further includes a lightning protection grounding processing unit, configured to perform an operation on the short-circuit current data and the soil resistivity data according to a preset data processing rule, so as to generate lightning protection grounding data.
Correspondingly, the second processing module carries out lightning protection grounding processing according to the lightning protection grounding data. The safety of the primary system of the offshore wind farm is improved.
In an embodiment, a processing apparatus of the primary system of the offshore wind farm is provided, which employs the processing method of the primary system of the offshore wind farm in any one of the above embodiments, for example, which includes functional modules corresponding to the processing method of the primary system of the offshore wind farm in any one of the above embodiments.
In one embodiment, a server is provided, as shown in fig. 7, which includes a processor, a memory, a computer program stored on the memory and executable on the processor, a network interface, and the like, connected by a system bus. Wherein the processor is configured to provide computational and control capabilities. The memory provides an environment for the execution of the computer program. The memory includes an internal memory and a nonvolatile storage medium. The network interface is used for communicating with an external investigation terminal or a claim settlement terminal through a network connection. The processor, when executing the computer program, implements the steps of: acquiring first electrical data of an offshore wind farm; processing the first electrical data according to a preset data processing rule to generate second electrical data; and carrying out electrical design processing on the primary system of the offshore wind farm according to the second electrical data.
The server may be implemented as a stand-alone server or as a server cluster of multiple servers. Those skilled in the art will appreciate that the architecture shown in fig. 7 is a block diagram of only a portion of the architecture associated with the subject application, and does not constitute a limitation on the servers to which the subject application applies, as a particular server may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, the first electrical data includes fan layout parameters, wind farm parameters, and booster station parameters; the processor, when executing the computer program, further performs the steps of: and processing the fan layout parameters, the wind field parameters and the booster station parameters according to preset data processing rules to generate current collection system topology data, offshore booster station site selection data and high-voltage power transmission system processing data.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and processing the first electrical data according to a preset data processing rule to generate main wiring data of the offshore booster station and main wiring data of the field electricity utilization electrical.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and according to a preset data processing rule, carrying out load flow calculation processing on the first electrical data, the offshore booster station main wiring data and the field power utilization electrical main wiring data to generate cable voltage drop data.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and processing the first electrical data and the cable voltage drop data according to a preset data processing rule to generate reactive compensation data.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and according to a preset data processing rule, performing short-circuit calculation processing on the first electrical data, the offshore booster station main wiring data and the field power utilization electrical main wiring data to generate short-circuit current data.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and calculating the emergency load data according to a preset data processing rule to generate emergency power supply capacity data.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and performing lightning protection grounding calculation according to the short circuit current data and the soil resistivity data, and outputting lightning protection grounding data according to the standard requirement.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: acquiring first electrical data of an offshore wind farm; processing the first electrical data according to a preset data processing rule to generate second electrical data; and carrying out electrical design processing on the primary system of the offshore wind farm according to the second electrical data.
In one embodiment, the first electrical data includes fan layout parameters, wind farm parameters, and booster station parameters; the computer program when executed by the processor further realizes the steps of: and processing the fan layout parameters, the wind field parameters and the booster station parameters according to preset data processing rules to generate current collection system topology data, offshore booster station site selection data and high-voltage power transmission system processing data.
In one embodiment, the computer program when executed by the processor further performs the steps of: and processing the first electrical data according to a preset data processing rule to generate main wiring data of the offshore booster station and main wiring data of the field electricity utilization electrical.
In one embodiment, the computer program when executed by the processor further performs the steps of: and according to a preset data processing rule, carrying out load flow calculation processing on the first electrical data, the offshore booster station main wiring data and the field power utilization electrical main wiring data to generate cable voltage drop data.
In one embodiment, the computer program when executed by the processor further performs the steps of: and processing the first electrical data and the cable voltage drop data according to a preset data processing rule to generate reactive compensation data.
In one embodiment, the computer program when executed by the processor further performs the steps of: and according to a preset data processing rule, performing short-circuit calculation processing on the first electrical data, the offshore booster station main wiring data and the field power utilization electrical main wiring data to generate short-circuit current data.
In one embodiment, the computer program when executed by the processor further performs the steps of: and calculating the emergency load data according to a preset data processing rule to generate emergency power supply capacity data.
In one embodiment, the computer program when executed by the processor further performs the steps of: and performing lightning protection grounding calculation according to the short circuit current data and the soil resistivity data, and outputting lightning protection grounding data according to the standard requirement.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, and the program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), or the like.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of handling a primary system of an offshore wind farm, the method comprising:
acquiring first electrical data of the offshore wind farm, wherein the first electrical data comprise fan layout data, wind farm basic information data and booster station parameters of the offshore wind farm;
processing the first electrical data according to a preset data processing rule to generate second electrical data;
the second electrical data comprise a collection system topology optimization report, an offshore booster station site selection map and a high-voltage transmission system scheme optimization design report; the current collection system topology optimization report comprises a 35kV current collection line path, a line model and a length, the offshore booster station site selection graph comprises a land centralized control center and the position of the offshore booster station, and the high-voltage power transmission system scheme optimization design report comprises a submarine cable path, a line model and a length;
the preset data processing rule comprises at least one of a topology optimization algorithm of a current collection system, a power transmission system optimization algorithm, a wind power plant reactive power calculation rule, a reactive compensation equipment characteristic and a compensation principle;
and performing electrical design processing on the primary system of the offshore wind farm according to the second electrical data, wherein the electrical design processing on the primary system of the offshore wind farm comprises topology optimization processing on a current collection system of the offshore wind farm, site selection of an offshore booster station and optimization processing of a high-voltage transmission system.
2. The method for processing the primary system of the offshore wind farm according to claim 1, wherein the first electrical data comprises wind turbine layout parameters, wind farm parameters and booster station parameters;
the processing the first electrical data according to a preset data processing rule to obtain second electrical data includes:
and processing the fan layout parameters, the wind field parameters and the booster station parameters according to preset data processing rules to generate current collection system topology data, offshore booster station site selection data and high-voltage power transmission system processing data.
3. The method for processing the primary system of the offshore wind farm according to claim 1 or 2, wherein the processing the first electrical data according to a preset data processing rule to obtain second electrical data comprises:
and processing the first electrical data according to a preset data processing rule to generate main wiring data of the offshore booster station and main wiring data of the field electricity utilization electrical.
4. The method for processing the primary system of the offshore wind farm according to claim 3, wherein the processing the first electrical data according to a preset data processing rule to generate second electrical data further comprises:
and according to a preset data processing rule, carrying out load flow calculation processing on the first electrical data, the offshore booster station main wiring data and the field power utilization electrical main wiring data to generate cable voltage drop data.
5. The method for processing the primary system of the offshore wind farm according to claim 4, wherein the processing the first electrical data according to a preset data processing rule to generate second electrical data further comprises:
and processing the first electrical data and the cable voltage drop data according to a preset data processing rule to generate reactive compensation data.
6. The method for processing the primary system of the offshore wind farm according to claim 3, wherein the processing the first electrical data according to a preset data processing rule to generate second electrical data further comprises:
and according to a preset data processing rule, performing short-circuit calculation processing on the first electrical data, the offshore booster station main wiring data and the field power utilization electrical main wiring data to generate short-circuit current data.
7. A processing apparatus for a primary system of an offshore wind farm, the apparatus comprising:
the obtaining module is used for obtaining first electrical data of an offshore wind farm, wherein the first electrical data comprises: the method comprises the following steps of (1) fan layout data, wind field basic information data and booster station parameters of an offshore wind farm;
the first processing module is used for processing the first electrical data according to a preset data processing rule to generate second electrical data, wherein the preset data processing rule comprises at least one of a topology optimization algorithm of a current collection system, a power transmission system optimization algorithm, a wind power plant reactive power calculation rule, a reactive power compensation equipment characteristic and a compensation principle;
the second electrical data comprise a collection system topology optimization report, an offshore booster station site selection map and a high-voltage transmission system scheme optimization design report; the current collection system topology optimization report comprises a 35kV current collection line path, a line model and a length, the offshore booster station site selection graph comprises a land centralized control center and the position of the offshore booster station, and the high-voltage power transmission system scheme optimization design report comprises a submarine cable path, a line model and a length;
and the second processing module is used for electrically processing the primary system of the offshore wind farm according to the second electrical data, wherein the electrical design processing of the primary system of the offshore wind farm comprises topology optimization processing of a current collection system of the offshore wind farm, site selection of an offshore booster station and optimization processing of a high-voltage transmission system.
8. The processing device of the offshore wind farm primary system according to claim 7, wherein the first electrical data comprises wind turbine layout parameters, wind farm parameters and booster station parameters;
the first processing module comprises a comprehensive processing unit and is used for processing the fan layout parameters, the wind field parameters and the booster station parameters according to preset data processing rules to generate current collection system topology data, offshore booster station site selection data and high-voltage transmission system processing data.
9. A server comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method of any of claims 1-6 are implemented when the processor executes the program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810803513.4A CN109038657B (en) | 2018-07-20 | 2018-07-20 | Processing method, device, server and medium for primary system of offshore wind farm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810803513.4A CN109038657B (en) | 2018-07-20 | 2018-07-20 | Processing method, device, server and medium for primary system of offshore wind farm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109038657A CN109038657A (en) | 2018-12-18 |
| CN109038657B true CN109038657B (en) | 2021-02-09 |
Family
ID=64644630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810803513.4A Active CN109038657B (en) | 2018-07-20 | 2018-07-20 | Processing method, device, server and medium for primary system of offshore wind farm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109038657B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111563303B (en) * | 2020-04-03 | 2023-09-19 | 广东省工业设备安装有限公司 | Control method, system and storage medium for auxiliary design of electric circuit |
| CN113128123A (en) * | 2021-04-23 | 2021-07-16 | 国核电力规划设计研究院有限公司 | Method and device for planning path of current collection cable of offshore wind farm and computer equipment |
| CN114089121B (en) * | 2021-11-30 | 2023-07-07 | 华北电力大学（保定） | Wind power plant electric wire collecting fault distance measurement method for asymmetric grounding short circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356896A (en) * | 2016-10-25 | 2017-01-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Method and system for forming offshore wind plant integration scheme |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104281737B (en) * | 2014-08-06 | 2018-07-20 | 华南理工大学 | A kind of wind power collection system of offshore wind power plant topological structure selection method |
| US10487804B2 (en) * | 2015-03-11 | 2019-11-26 | General Electric Company | Systems and methods for validating wind farm performance improvements |
| CN104835394A (en) * | 2015-04-30 | 2015-08-12 | 神华集团有限责任公司 | Wind power generation farm operation and maintenance simulation system |
| CN107330563A (en) * | 2017-07-17 | 2017-11-07 | 华北电力大学 | A kind of offshore wind farm current collection combines Topology Optimization Method with transmission system |
| CN107633346B (en) * | 2017-08-21 | 2020-10-09 | 中国能源建设集团广东省电力设计研究院有限公司 | Method, device, computer and medium for processing secondary parameters of offshore wind power plant |
-
2018
- 2018-07-20 CN CN201810803513.4A patent/CN109038657B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356896A (en) * | 2016-10-25 | 2017-01-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Method and system for forming offshore wind plant integration scheme |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109038657A (en) | 2018-12-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111799813B (en) | Marine wind farm reactive power optimization configuration method considering reactive power regulation of wind turbine generator | |
| Jung et al. | Voltage regulation method for voltage drop compensation and unbalance reduction in bipolar low-voltage DC distribution system | |
| CN109038657B (en) | Processing method, device, server and medium for primary system of offshore wind farm | |
| Yang et al. | Improve distribution system energy efficiency with coordinated reactive power control | |
| Assis et al. | Impact of multi-terminal HVDC grids on enhancing dynamic power transfer capability | |
| CN102403716A (en) | Dynamic equalizing method for multi-infeed alternating/direct-current power grid | |
| CN110138002B (en) | Offshore wind power reactive power configuration method and device, computer equipment and storage medium | |
| Agajie et al. | Optimal sizing and siting of distributed generators for minimization of power losses and voltage deviation | |
| CN103078329B (en) | Output reactive compensation analysis method for long-distance 200kV submarine cable of offshore wind plant | |
| Campaner et al. | Automatic voltage and reactive power control in distribution systems: Dynamic coupling analysis | |
| Wu et al. | Equivalent modeling method for regional decentralized photovoltaic clusters based on cluster analysis | |
| CN111740427B (en) | Reactive compensation configuration method and system for offshore wind farm access system | |
| Mahendru et al. | Reduction in system losses and power demand by combination of optimal power flow and conservation voltage reduction using smart PV inverters | |
| Hua et al. | Day-ahead scheduling of power system with short-circuit current constraints considering transmission switching and wind generation | |
| Wu et al. | Impact analysis of large PV integration: Case studies in Taiwan | |
| Sabarinath et al. | Optimal sitting and sizing of renewable energy resources for power loss reduction in radial distribution systems using whale optimization algorithm | |
| Zhilenkov et al. | Intelligent energy-quality management in autonomous electric-power systems of transport facilities | |
| Makinde et al. | Over-voltage problem in distribution network with DG: A review of mitigation techniques | |
| CN111641204B (en) | Calculation method and device for distributed energy admission capacity | |
| Islam et al. | Voltage and transient stability analysis in Bangladesh's power system network (BPSN) | |
| Žnidarec et al. | Influence of distributed generation from renewable energy sources on distribution network hosting capacity | |
| CN111092453A (en) | Power grid key line identification method for multipoint access photovoltaic power supply | |
| Li et al. | Wind farms reactive power optimization using genetic/tabu hybrid algorithm | |
| CN112952922B (en) | Reactive power configuration method and system suitable for offshore wind power access system | |
| Zhu et al. | An engineering applicable dynamic equivalent method for large-scale AC system connected to VSC-HVDC |
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 |