CN107633346B - Method, device, computer and medium for processing secondary parameters of offshore wind power plant - Google Patents
Method, device, computer and medium for processing secondary parameters of offshore wind power plant Download PDFInfo
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- CN107633346B CN107633346B CN201710720298.7A CN201710720298A CN107633346B CN 107633346 B CN107633346 B CN 107633346B CN 201710720298 A CN201710720298 A CN 201710720298A CN 107633346 B CN107633346 B CN 107633346B
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Abstract
The invention relates to a method, a device, a computer and a medium for processing secondary parameters of an offshore wind farm, wherein the method comprises the following steps: acquiring a first parameter; processing the first parameter according to a preset rule to generate a second parameter; acquiring a reference parameter, and comparing the second parameter with the reference parameter; and generating an electric field model according to the comparison result of the second parameter and the reference parameter. And calculating to obtain a second parameter through a preset rule, and comparing the calculated second parameter with a reference parameter to generate an electric field model, so that the generated electric field model is more reliable and accurate.
Description
Technical Field
The invention relates to the technical field of offshore wind power generation, in particular to a method, a device, a computer and a medium for processing secondary parameters of an offshore wind farm.
Background
The offshore wind farm mostly refers to offshore wind power with a depth of about 10 meters. Compared with a land wind power plant, the offshore wind power plant has the advantages that land resources are not occupied, the influence of landforms and landforms is avoided basically, the wind speed is higher, the single machine capacity of the wind power unit is larger (3-5 megawatts), and the annual utilization hours are higher. However, the technical difficulty of offshore wind power plant construction is also high, and the construction cost is generally 2-3 times that of a land wind power plant.
Due to the fact that the construction cost of the offshore wind farm is high, various parameters of the wind farm need to be acquired and accurately calculated, and the reliability of the wind farm is improved. The secondary parameters of the wind power plant are generated by collecting, verifying and generating according to the first parameters of all the systems, so whether the accuracy of the secondary parameters is a key index influencing the reliability of the wind power plant or not is provided. However, the conventional wind power plant lacks a comprehensive and reliable secondary parameter generation and improvement means, and therefore, how to accurately obtain the secondary parameters and generate an accurate and reliable electric field model is an urgent problem to be solved.
Disclosure of Invention
Based on this, it is necessary to provide a method, an apparatus, a computer, and a medium for processing secondary parameters of an offshore wind farm, aiming at the defects that the conventional secondary parameters are inaccurate in acquisition and lack of reliability, which results in inaccuracy of a power plant model.
A method of secondary parameter processing for an offshore wind farm, the method comprising:
acquiring a first parameter;
processing the first parameter according to a preset rule to generate a second parameter;
acquiring a reference parameter, and comparing the second parameter with the reference parameter;
and generating an electric field model according to the comparison result of the second parameter and the reference parameter.
In one embodiment, the step of generating an electric field model according to the comparison result of the second parameter and the reference parameter comprises:
when the second parameter is matched with the reference parameter, generating the electric field model according to the second parameter;
and when the second parameter is not matched with the reference parameter, correcting the second parameter according to the preset rule, and generating the electric field model according to the corrected second parameter.
In one embodiment, the step of obtaining the first parameter includes:
connecting a database;
and sending an acquisition request to the database to acquire the first parameter.
In one embodiment, the step of generating the electric field model further comprises:
and outputting the electric field model.
In one embodiment, the first parameter includes: relay protection parameters, storage battery capacity parameters, UPS capacity parameters, direct current short circuit parameters and UPS short circuit parameters.
An offshore wind farm secondary parameter processing apparatus, comprising:
the first parameter acquisition module is used for acquiring a first parameter;
the second parameter generation module is used for processing the first parameter according to a preset rule to generate a second parameter;
the comparison module is used for acquiring a reference parameter and comparing the second parameter with the reference parameter;
and the model generation module is used for generating an electric field model according to the comparison result of the second parameter and the reference parameter.
In one embodiment, the model generation module is further configured to generate the electric field model according to the second parameter when the second parameter matches the reference parameter; and the model generation module is further used for correcting the second parameter according to the preset rule and generating the electric field model according to the corrected second parameter when the second parameter is not matched with the reference parameter.
In one embodiment, the first parameter obtaining module includes:
the database connection submodule is used for connecting a database;
and the first parameter acquisition submodule is used for sending an acquisition request to the database to acquire the first parameter.
A computer 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 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 the method of any of the above.
According to the method, the device, the computer and the medium for processing the secondary parameters of the offshore wind farm, the second parameters are obtained through calculation according to the preset rules, the second parameters obtained through calculation are compared with the reference parameters, and the electric field model is generated, so that the generated electric field model is more reliable and accurate.
Drawings
FIG. 1 is an application environment diagram of a secondary parameter processing method for an offshore wind farm in one embodiment;
FIG. 2A is a flow diagram of a method for processing secondary parameters of an offshore wind farm, under an embodiment;
FIG. 2B is a flow chart of a method for processing secondary parameters of an offshore wind farm in another embodiment;
FIG. 3 is a schematic structural diagram of an apparatus for processing secondary parameters of an offshore wind farm in one embodiment;
fig. 4 is a schematic structural diagram of a computer in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be 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.
For example, a method for processing secondary parameters of an offshore wind farm comprises the following steps: acquiring a first parameter; processing the first parameter according to a preset rule to generate a second parameter; acquiring a reference parameter, and comparing the second parameter with the reference parameter; and generating an electric field model according to the comparison result of the second parameter and the reference parameter.
For example, an offshore wind farm secondary parameter processing apparatus includes: the first parameter acquisition module is used for acquiring a first parameter; the second parameter generation module is used for processing the first parameter according to a preset rule to generate a second parameter; the comparison module is used for acquiring a reference parameter and comparing the second parameter with the reference parameter; and the model generation module is used for generating an electric field model according to the comparison result of the second parameter and the reference parameter.
In the above embodiment, the second parameter is obtained by calculating according to the preset rule, and the electric field model is generated by comparing the calculated second parameter with the reference parameter, so that the generated electric field model is more reliable and accurate.
The method for processing the secondary parameters of the offshore wind farm provided in the embodiment of the invention can be applied to the application environment as shown in fig. 1. The plurality of computers 102 are connected to the server 104 via a network. The computer 102 obtains a first parameter input by a user, obtains a preset rule and a reference parameter from the server 104, processes the first parameter according to the preset rule to generate a second parameter, compares the second parameter with the reference parameter, and generates an electric field model according to a comparison result of the second parameter and the reference parameter.
In an embodiment, as shown in fig. 2A, a method for processing secondary parameters of an offshore wind farm is provided, which is described by taking the method applied to a computer in fig. 1 as an example, and specifically includes the following steps:
Specifically, the first parameter is a primary parameter, that is, the primary parameter is directly acquired from the field or acquired from a database, the primary parameter is a parameter that is directly acquired and not calculated, in this embodiment, the first parameter is used as an input parameter for calculating the second parameter, for example, the primary parameter is acquired data.
For example, the primary parameter is used to reflect the operation condition of the wind farm related element, facility or device, for example, the primary parameter is an operation parameter of the wind farm related element, facility or device, such as a design parameter of the wind farm related element, facility or device.
And 240, processing the first parameter according to a preset rule to generate a second parameter.
For example, a second parameter is calculated and generated according to the first parameter. In this step, after the first parameter is obtained, the first parameter is processed and calculated according to a preset rule, and a second parameter is generated. For example, one of the second parameters is calculated and generated according to each of the first parameters, for example, one of the second parameters is calculated and generated according to a plurality of the first parameters. For example, the preset rule is the specification and standard of the electrical secondary design of the offshore wind farm, so that the obtained second parameter can meet the specification and standard of the electrical secondary design of the offshore wind farm.
Specifically, the reference parameter is a preset reference parameter, for example, the reference parameter is a pre-stored reference parameter, and for example, the reference parameter is pre-stored in the storage space. The reference parameters are pre-stored in a database of the server, and the reference parameters comprise collected data, historical data or empirical data. The collected data is data collected on site by a sensor in the power grid, the historical data is historical data stored in a database, and the verified data is data obtained by performing empirical correction according to the collected data.
The reference parameter is used for comparing with the second parameter, for example, the reference parameter is used for verifying the second parameter, and verifying whether the second parameter is accurate and reliable. For example, a reference model is obtained, the reference model is analyzed to obtain a reference parameter, and the second parameter is compared with the reference parameter. For example, each second parameter is compared with a reference parameter, or, for example, whether each second parameter is the same as a reference parameter, or, for example, whether a difference between each second parameter and the corresponding reference parameter is smaller than a preset deviation range is detected. For example, the reference parameter is set according to a preset rule, i.e. the reference parameter complies with specifications and standards for electrical secondary design of offshore wind farms. For example, a reference model is preset according to the specifications and standards of the offshore wind farm electrical secondary design, and the reference parameters are parameters in the reference model.
Specifically, in this step, the second parameter is verified and corrected according to a comparison result between the second parameter and the reference parameter, so as to generate an electric field model, where the electric field model is an electric field operation scheme including a plurality of second parameters, or the electric field model is an operation executable scheme including a plurality of second parameters.
And comparing the calculated second parameter with the reference parameter to generate an electric field model, so that the generated electric field model is more reliable and accurate.
In one embodiment, the step 280 includes: and when the second parameter is matched with the reference parameter, generating the electric field model according to the second parameter. And when the second parameter is not matched with the reference parameter, correcting the second parameter according to the preset rule, and generating the electric field model according to the corrected second parameter.
In this embodiment, the electric field model is generated in different calculation processes according to the matching condition of the second parameter and the reference parameter, so as to improve the accuracy of the electric field model. It should be understood that the matching of the second parameter with the reference parameter may be that the second parameter is equal to the reference parameter, or that the difference between the second parameter and the reference parameter is within a preset range, for example, whether the second parameter is equal to the reference parameter is detected, for example, whether each second parameter is equal to a corresponding one of the reference parameters is detected, for example, whether the absolute value of the difference between the second parameter and the reference parameter is smaller than a preset threshold value is detected, for example, whether the absolute value of the difference between each second parameter and a corresponding one of the reference parameters is smaller than the preset threshold value is detected, when the second parameter is equal to the reference parameter, or the absolute value of the difference between the second parameter and the reference parameter is smaller than the preset threshold value, it is indicated that the second parameter is matched with the reference parameter, otherwise, it is indicated that the second parameter is not matched with the reference parameter.
Specifically, when the second parameter is matched with the reference parameter, the second parameter can conform to a preset rule, and the second parameter is accurate, so that the electric field model directly generated and obtained through the second parameter is accurate. On the contrary, when the second parameter is not matched with the reference parameter, the difference value between the second parameter and the reference parameter is larger, and the second parameter is not in line with the preset rule, the second parameter is corrected according to the preset rule, so that the second parameter can be in line with the preset rule, and the electric field model is generated and obtained according to the corrected second parameter, and the electric field model obtained in the way can be in line with the preset rule more accurately.
In one embodiment, as shown in FIG. 2B, step 220 comprises:
In this embodiment, the first parameter is pre-stored in the database, for example, the first parameter is collected on site and pre-stored in the database after being collected. In this step, the database is connected to access the database, for example, through the database account and the account password, and the database is connected to access the database, for example, the account password is the account password. For example, the database is a database of a server. In this embodiment, the computer is connected to the database of the server by accessing the server.
In this step, after the database is connected, a request for obtaining the first parameter is sent to the database, and the database is used for responding to the request after receiving the request and returning the first parameter.
In one embodiment, the step of generating the electric field model further comprises: and outputting the electric field model.
Specifically, the output electric field model may be output to a display of a computer or to a server. For example, the electric field model is output to a display and displayed, so that a worker can obtain the electric field model in real time; for example, the electric field model is output and stored in a database of the server, so that the subsequent checking of workers can be facilitated; for example, output to a printing device, print the electric field model. The output electric field model enables equipment in the wind power plant to be configured according to parameters in the electric field model, so that the reliability of the equipment in the wind power plant is higher, and the work is safer and more efficient.
In one embodiment, the first parameter includes: a relay protection parameter, a storage battery capacity parameter, a UPS (Uninterruptible Power Supply) capacity parameter, a direct current short circuit parameter and a UPS short circuit parameter.
In this embodiment, the first parameter is a primary parameter in the electrical secondary design of the offshore wind farm.
For example, the relay protection parameter is a device rated parameter of a transmission line, a main transformer, a bus, a station transformer, a grounding transformer, a reactive power compensation device and a current collection line, and a short-circuit current value of each node of a main connection line is obtained through short-circuit calculation.
For example, the battery capacity parameters include the dc load of the battery, the UPS dc input nominal voltage, the cell float voltage, and the capacity scaling factor.
The UPS capacity parameters include a UPS load, a single inductive load capacity, a single inductive load power factor, a single capacitive load capacity, a single capacitive load power factor, a load factor, and a power correction factor.
The direct-current short-circuit parameters comprise the constant load current of a direct-current system, the 10h discharge rate current of the lead-acid storage battery, the 5h discharge rate current of the cadmium-nickel alkaline storage battery, the voltage of a single storage battery at the last stage of charging, the number of single storage batteries and the rated current of a single charging module; the system comprises a charging device rated current, a reliability coefficient, a motor rated current, a matching coefficient, a breaker electromagnetic operating mechanism closing current, a simultaneous coefficient, a control load calculation current, a protection load calculation current, a signal load calculation current, a maximum rated current of a direct current breaker in a direct current feeder, a matching coefficient and an agreed action current coefficient of the breaker overload long-delay protection thermal release.
The UPS short circuit parameters comprise UPS capacity, UPS output end voltage, UPS system input end rated voltage, UPS efficiency, UPS input power factor and commercial power voltage allowable fluctuation range.
In this embodiment, the second parameter is calculated and obtained according to the preset rule by using the first parameter.
The second parameters obtained by calculation comprise relay protection parameters, storage battery capacity parameters, UPS capacity parameters, direct current short circuit parameters and UPS short circuit parameters.
According to the relay protection parameter in the first parameter in the embodiment, the relay protection parameter in the second parameter obtained by calculation includes a secondary protection setting value of the power transmission line, the main transformer, the bus, the station transformer, the grounding transformer, the reactive power compensation device and the power collection line.
According to the battery capacity parameter in the first parameter in the embodiment, the battery capacity parameter in the second parameter obtained by calculation includes the cell battery equalizing charge voltage, the cell battery end-of-discharge voltage, the number of batteries, and the battery calculated capacity.
According to the UPS capacity parameter in the first parameter in the present embodiment, the UPS capacity parameter in the calculated second parameter includes a UPS calculated capacity value.
According to the direct-current short-circuit parameter in the first parameter in the embodiment, the direct-current short-circuit parameter in the second parameter obtained by calculation includes the rated current of the charging device, the rated voltage of the charging device, the rated current of the fuse and the knife switch, the rated current of the direct-current circuit breaker, the measurement range of the ammeter, the selection number of the high-frequency switch power supply modules, the rated current of the direct-current circuit breaker, the appointed action current of the circuit breaker overload long-delay protection, and the instantaneous protection action current of the circuit breaker short-circuit.
According to the UPS short-circuit parameter in the first parameter in the embodiment, the UPS short-circuit parameter in the calculated second parameter includes the UPS system output short-circuit current and the UPS system input short-circuit current.
The following further elaboration is made by a relay protection model calculation process, a storage battery capacity model calculation process, a UPS capacity model calculation process, a direct current short circuit model calculation process and a UPS short circuit model calculation process:
1. relay protection model calculation
The main wiring parameters and the field power wiring parameters can be obtained from the electric primary model recorded in the database in the server, and a relay protection configuration model and a monitoring system model can be worked out. The short-circuit current of each node obtained by short-circuit calculation can be used for carrying out protection setting calculation on equipment such as a fan, a bus, a booster station and the like in an offshore wind farm, so that the output of a relay protection model is realized, and the method comprises the following steps:
(1) acquiring main wiring parameters, field power utilization wiring parameters and access system parameters;
(2) processing the main wiring parameters, the field power utilization wiring parameters and the access system parameters according to the wind power plant electrical design specifications and the calculation rules corresponding to the standards to generate a relay protection configuration model and a monitoring system scheme model;
(3) acquiring a data result of short circuit calculation;
(4) according to the wind power plant electrical design specification and a calculation rule corresponding to the standard, checking the relay protection configuration model and the monitoring system scheme model by using the short circuit calculation data of each node, and checking to obtain a relay protection model;
(5) and outputting the relay protection model.
Specifically, the calculation rule in this embodiment includes:
the setting calculation range comprises current collection line protection, bus protection, main transformer protection, land three-winding main transformer protection, high-voltage transmission line protection, high-voltage reactive compensation protection, grounding transformer relay protection and station transformer relay protection.
Protection of a power transmission line: a line from an offshore booster station to a onshore transformer substation is provided with full-line quick-acting longitudinal protection as main protection and corresponding backup protection, wherein the backup protection comprises three-section alternate distance protection and three-section zero-sequence current protection and is provided with an overload warning function.
Protection of a main transformer: the main transformer should be provided with longitudinal differential protection as main protection, the high-voltage side should be provided with composite voltage latching overcurrent protection, and the low-voltage side should be provided with overcurrent protection, composite voltage latching overcurrent protection and zero-sequence overcurrent protection; the high-voltage side of the main transformer should be provided with zero-sequence current protection, the neutral point of the high-voltage side should be provided with gap zero-sequence current protection and zero-sequence voltage protection, and each side should be provided with overload protection.
Bus protection: bus differential protection, CT disconnection warning, CT disconnection locking and voltage locking are configured.
Station transformer protection: two sections of overcurrent protection, overload protection and zero sequence overcurrent protection are configured.
And (3) grounding transformer protection: two sections of overcurrent protection, overload protection and zero sequence overcurrent protection are configured.
Protection of the reactive power compensation device: two-section overcurrent protection, zero-sequence overcurrent protection, overvoltage protection and low-voltage protection are provided.
35kV current collection circuit: two sections of overcurrent protection, zero sequence overcurrent protection and overload protection are configured.
The wind power plant electrical design specification and standard comprises detailed calculation formulas of all setting modules, and the specific involved procedures are as follows: the method comprises the following steps of Q/CSG110037-2012 southern power grid 10 kV-110 kV system relay protection setting calculation procedure, DL/T559220 kV-750 kV power grid relay protection device operation setting procedure, Q/CSG110034-2012 southern power grid transformer relay protection setting calculation procedure, and GB 14285 + 2006 relay protection and safety automatic device technical procedure.
2. Battery capacity model calculation
In the offshore wind power booster station, the storage battery provides a continuous power supply for direct current loads such as UPS (uninterrupted power supply), booster station emergency lighting and control equipment, and the like, so that the basic power supply stability in the offshore wind power plant is ensured, and therefore, the storage battery capacity calculation module is also very important for the construction of the offshore wind power plant. The storage battery capacity calculation module comprises the following steps:
(1) acquiring direct current load parameters from a database, wherein the direct current load parameters comprise direct current load names, direct current load sizes and direct current load duration;
(2) calculating the capacity of the storage battery according to preset rules based on the name of the direct current load, the size of the direct current load and the duration time of the direct current load to generate a capacity parameter of the storage battery;
(3) generating a storage battery capacity model according to the storage battery capacity parameters;
(4) and outputting the storage battery capacity model.
The calculation of the capacity parameter of the storage battery comprises the following steps: 1. counting the direct current load; 2. selecting a storage battery form, and selecting the floating charging voltage of the single storage battery according to the storage battery form; 3. calculating the number of the storage batteries according to the UPS direct current input nominal voltage and the floating charging voltage of the single storage battery; and calculating the equalizing charge voltage of the storage battery; 4. determining the discharge point termination voltage of the single storage battery according to the requirement of the lowest permitted voltage of the direct-current bus; 5. according to different storage battery forms, termination voltages and discharge time, capacity conversion coefficients can be searched from a standard appendix table, and the storage battery capacity is calculated according to a step algorithm and a voltage control method respectively; 6. and selecting the larger of the calculated values obtained by the step algorithm and the voltage control method as the final calculated battery capacity.
Inputting data: the direct current load, the UPS direct current input nominal voltage, the single storage battery floating charge voltage and the capacity conversion coefficient.
Outputting data: the method comprises the steps of equalizing charge voltage of the single storage battery, ending voltage of the last discharge stage of the single storage battery, the number of the storage batteries and calculated capacity of the storage batteries.
The relationship is as follows: the partial electric secondary is relatively independent and has small relation with the electric primary, and the wind field capacity in the primary indirectly influences the calculated value of the capacity of the storage battery by influencing the size of the secondary direct current load.
UPS Capacity model calculation
The UPS capacity calculation flow comprises the following steps:
(1) calling UPS load parameters, wherein the UPS load parameters comprise a UPS load name, a UPS load size and a UPS load duration;
(2) calculating the UPS capacity according to a preset rule based on the UPS load name, the UPS load size and the UPS load duration to generate a UPS capacity parameter;
(3) generating a UPS capacity model according to the UPS capacity parameters;
(4) and outputting the UPS capacity model.
The calculation of the UPS capacity parameter comprises the following steps: 1. counting various UPS loads in the offshore wind power plant; 2. calculating total active power and reactive power of load; 3. solving a calculation load and a comprehensive power factor; 4. and calculating the UPS capacity according to the load comprehensive power factor, the calculated load, the reliability coefficient and the power correction coefficient.
Inputting data: UPS load statistics, individual inductive load capacity, individual inductive load power factor, individual capacitive load capacity, individual capacitive load power factor, load factor, power correction factor.
Outputting data: the UPS calculates a capacity value.
The relationship is as follows: the electrical secondary of the UPS capacity calculation part is relatively independent and has a small relation with the electrical primary, and the wind field capacity in the primary indirectly influences the calculation value of the UPS capacity by influencing the statistics of various UPS loads in the offshore wind power field. The UPS capacity directly depends on various UPS load statistics.
4. DC short circuit model calculation
The direct current short circuit model is mainly used for realizing model selection of the system on equipment such as switching equipment, a charging device and the like through calculation, and ensuring the reliable operation of a direct current system. The method comprises the following specific steps:
(1) acquiring unit capacity parameters and local power grid parameters;
(2) acquiring a storage battery capacity model;
(3) calculating the short circuit of the line according to a preset rule based on the unit capacity parameter and the local power grid parameter, and generating an output direct current switch parameter and a charging device parameter;
(4) calculating and generating a direct current short circuit model according to the direct current switch parameters and the charging device parameters;
(5) and outputting the direct current short circuit model.
Calculating the direct current system short circuit and the switch equipment type selection: the method is divided into two parts, namely a charging device and rectifying module selection part and a direct current breaker selection part. The charging device and rectifying module selection part comprises a charging device rated current selection part, a charging device output voltage selection part, a charging device loop equipment selection part, a high-frequency switching power supply module configuration part and a high-frequency switching power supply module quantity selection part; the selection of the direct current circuit breaker comprises the calculation of the rated current of the direct current circuit breaker and the protection setting of the direct current circuit breaker, wherein the rated voltage of the circuit breaker is greater than or equal to the highest working voltage of a loop. The rated breaking current of the circuit breaker should be larger than the maximum short-circuit current through the direct current circuit breaker. The specific calculation formula is shown in appendix A, D of DL/T5044-2014 DC power supply system design technical specification of electric power engineering
Inputting data: the constant load current of a direct current system, the 10h discharge rate current of a lead-acid storage battery, the 5h discharge rate current of a cadmium-nickel alkaline storage battery, the voltage of a single storage battery at the last stage of charging, the number of single storage batteries and the rated current of a single charging module; the system comprises a charging device rated current, a reliability coefficient, a motor rated current, a matching coefficient, a breaker electromagnetic operating mechanism closing current, a simultaneous coefficient, a control load calculation current, a protection load calculation current, a signal load calculation current, a maximum rated current of a direct current breaker in a direct current feeder, a matching coefficient and an agreed action current coefficient of the breaker overload long-delay protection thermal release.
Outputting data: the charging device is used for charging the high-frequency switch power supply module, and comprises a charging device rated current, a charging device rated voltage, a fuse and knife switch rated current, a direct current breaker rated current, an ammeter measurement range, a high-frequency switch power supply module selection number, a direct current breaker rated current, a breaker overload long-delay protection appointed action current and a breaker short-circuit instantaneous protection action current.
The relationship is as follows: the calculation of the direct current system short circuit and the switch equipment type selection mainly comprises a charging device and a rectifier module selection part and a direct current breaker selection part. The charging device and the rectifying module are selected according to the calculation result of the secondary medium storage battery, and the circuit breaker type selection part is mainly dependent on the calculation current of each secondary device.
UPS short circuit model calculation
The UPS short circuit model calculation process comprises the following steps:
(1) acquiring unit capacity parameters and local power grid parameters;
(2) calculating to obtain UPS capacity parameters according to the wind power plant electrical design specifications and the calculation rules corresponding to the standards based on the unit capacity parameters and the local power grid parameters;
(3) generating a UPS capacity model according to the UPS capacity parameters;
(4) and outputting the UPS capacity model.
UPS system short circuit and switchgear type selection: the UPS power distribution cabinet comprises an input side breaker S1 of the UPS in the power distribution cabinet and an output side breaker S2. The selection of the output breaker is as follows:
the capacity of the UPS is S and the voltage of the output end is 220V which are selected by the capacity of the UPS, and considering the overload capacity of the UPS, when the overload is 20%, the UPS can operate for 10min, and when the overload is 50%, the UPS can operate for only tens of seconds, so that the short-circuit current is calculated according to the overload of 50%; the input circuit breaker is selected as follows: the factors to be considered are input power factor, charging current, UPS efficiency, overload capacity, voltage fluctuation and the like, the UPS charging efficiency is 110% of rated power, and the allowable voltage fluctuation range is 20%.
Inputting data: UPS capacity, UPS output end voltage, UPS system input end rated voltage, UPS efficiency, UPS input power factor and commercial power voltage allowable fluctuation range.
Outputting data: the UPS system outputs short-circuit current and the UPS system inputs short-circuit current.
The relationship is as follows: the part is independent relative to the primary electricity and depends on the calculation result of the UPS capacity in the secondary electricity, and the calculation result is in indirect relation with the primary electricity.
In one embodiment, as shown in fig. 4, there is provided an offshore wind farm secondary parameter processing apparatus, including: a first parameter acquisition module 420, a second parameter generation module 440, a comparison module 460, and a model generation module 480. The first parameter obtaining module 420 is configured to obtain a first parameter; the second parameter generating module 440 is configured to process the first parameter according to a preset rule to generate a second parameter; the comparison module 460 is configured to obtain a reference parameter, and compare the second parameter with the reference parameter; the model generating module 480 is configured to generate an electric field model according to a comparison result between the second parameter and the reference parameter.
In one embodiment, the model generation module is further configured to generate the electric field model according to the second parameter when the second parameter matches the reference parameter; and the model generation module is further used for correcting the second parameter according to the preset rule and generating the electric field model according to the corrected second parameter when the second parameter is not matched with the reference parameter.
In one embodiment, the first parameter obtaining module comprises: the first parameter acquisition sub-module is used for acquiring a first parameter of the database; the first parameter obtaining submodule is used for sending an obtaining request to the database to obtain the first parameter.
In one embodiment, further comprising: and the model output submodule is used for outputting the electric field model.
In one embodiment, the first parameter includes: the device comprises relay protection parameters, storage battery capacity parameters, UPS capacity parameters, direct current short circuit parameters and UPS short circuit parameters.
In one embodiment, a computer is provided, as shown in fig. 4, comprising a processor, a memory, a computer program stored on the memory and executable on the processor, and a network interface, etc., 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 a first parameter; processing the first parameter according to a preset rule to generate a second parameter; acquiring a reference parameter, and comparing the second parameter with the reference parameter; and generating an electric field model according to the comparison result of the second parameter and the reference parameter.
The computer may be implemented as a stand-alone computer or as a cluster of computers. Those skilled in the art will appreciate that the architecture shown in FIG. 4 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computers to which the disclosed aspects may be applied, and that a particular computer 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 processor, when executing the computer program, further performs the steps of:
when the second parameter is matched with the reference parameter, generating the electric field model according to the second parameter; and when the second parameter is not matched with the reference parameter, correcting the second parameter according to the preset rule, and generating the electric field model according to the corrected second parameter.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
connecting a database; and sending an acquisition request to the database to acquire the first parameter.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and outputting the electric field model.
In one embodiment, a computer-readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, performs the steps of:
acquiring a first parameter; processing the first parameter according to a preset rule to generate a second parameter; acquiring a reference parameter, and comparing the second parameter with the reference parameter; and generating an electric field model according to the comparison result of the second parameter and the reference parameter.
In one embodiment, the computer program when executed by the processor further performs the steps of:
when the second parameter is matched with the reference parameter, generating the electric field model according to the second parameter; and when the second parameter is not matched with the reference parameter, correcting the second parameter according to the preset rule, and generating the electric field model according to the corrected second parameter.
In one embodiment, the computer program when executed by the processor further performs the steps of:
connecting a database; and sending an acquisition request to the database to acquire the first parameter.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and outputting the electric field model.
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 a computer program, which can be stored in a non-volatile computer-readable storage medium, and can include the processes of the embodiments of the methods described above when executed. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), or the like.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several 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 for processing secondary parameters of an offshore wind plant is characterized by comprising the following steps:
acquiring a first parameter;
processing the first parameter according to a preset rule to generate a second parameter;
acquiring a reference parameter, and comparing the second parameter with the reference parameter;
generating an electric field model according to the comparison result of the second parameter and the reference parameter;
the step of generating an electric field model according to the comparison result of the second parameter and the reference parameter comprises the following steps:
when the second parameter is matched with the reference parameter, generating the electric field model according to the second parameter;
and when the second parameter is not matched with the reference parameter, correcting the second parameter according to the preset rule, and generating the electric field model according to the corrected second parameter.
2. The offshore wind farm secondary parameter processing method according to claim 1, wherein the preset rules are specifications and standards for offshore wind farm electrical secondary design.
3. The offshore wind farm secondary parameter processing method according to claim 1, wherein the step of obtaining the first parameter comprises:
connecting a database;
and sending an acquisition request to the database to acquire the first parameter.
4. The offshore wind farm secondary parameter processing method according to claim 1, wherein the step of generating the farm model is followed by further comprising:
and outputting the electric field model.
5. The offshore wind farm secondary parameter processing method according to claim 1, wherein the first parameter comprises: the device comprises relay protection parameters, storage battery capacity parameters, UPS capacity parameters, direct current short circuit parameters and UPS short circuit parameters.
6. The utility model provides an offshore wind farm secondary parameter processing apparatus which characterized in that includes:
the first parameter acquisition module is used for acquiring a first parameter;
the second parameter generation module is used for processing the first parameter according to a preset rule to generate a second parameter;
the comparison module is used for acquiring a reference parameter and comparing the second parameter with the reference parameter;
the model generation module is used for generating an electric field model according to the comparison result of the second parameter and the reference parameter;
the model generation module is further used for generating the electric field model according to the second parameter when the second parameter is matched with the reference parameter; and the model generation module is further used for correcting the second parameter according to the preset rule when the second parameter is not matched with the reference parameter, and generating the electric field model according to the corrected second parameter.
7. The offshore wind farm secondary parameter processing apparatus according to claim 6, wherein the preset rules are specifications and standards for offshore wind farm electrical secondary design.
8. The offshore wind farm secondary parameter processing apparatus according to claim 6, wherein the first parameter obtaining module comprises:
the database connection submodule is used for connecting a database;
and the first parameter acquisition submodule is used for sending an acquisition request to the database to acquire the first parameter.
9. A computer 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 according to any of claims 1-5 are implemented when the program is executed by the processor.
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 5.
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