A method and device for processing loss data of an offshore wind power DC transmission system

Abstract

The present invention discloses a loss data processing method and device for an offshore wind power DC transmission system, which analyzes the acquired operation data of the offshore wind power DC transmission system to be evaluated, distinguishes the system type of the offshore wind power DC transmission system to be evaluated, calculates the annual average power of the system according to the acquired system type, and calculates the loss data caused by the fault according to a preset weighted calculation formula, and generates a loss data report according to the loss data. The present invention analyzes the loss data caused by the fault of the offshore wind power DC transmission system, calculates it by a preset weighted calculation formula, and improves the accuracy of the fault loss data of the offshore wind power DC transmission system.

Description

Technical Field

[0001] The present invention relates to the field of information technology services, and in particular to a loss data processing method and device for an offshore wind power direct current transmission system. Background Art

[0002] As countries around the world pay more and more attention to energy security, ecological environment, climate change and other issues, accelerating the development of wind power has become a general consensus and concerted action of the international community to promote energy transformation and development and respond to global climate change. The development and utilization of offshore wind power has become one of the new growth points and main directions of global renewable energy development. At present, there are two main technical routes for offshore wind power transmission: AC transmission and DC transmission. Due to the different grid connection principles, system components and construction plans of AC and DC transmission technologies, these two transmission and grid connection methods have different scopes of application. When comparing the technical and economic performance of AC and DC schemes for specific projects, annual fault loss data is one of the most important indicators, which directly affects the economic performance of the project throughout its life cycle. Different technical routes of DC transmission systems: symmetrical monopole and symmetrical bipole, the corresponding operating modes and annual fault loss analysis methods are quite different. At present, there is no standard analysis method for the annual fault loss data of offshore wind power DC transmission systems, and the cost comparison of existing technical schemes only compares the cost of equipment, which ignores the loss cost, which leads to a low accuracy rate of fault loss data.

[0003] Therefore, there is an urgent need for a fault loss data processing strategy for offshore wind power DC transmission systems to solve the current problem of low accuracy of fault loss data for offshore wind power DC transmission systems. Summary of the invention

[0004] The embodiments of the present invention provide a method and device for processing loss data of an offshore wind power DC transmission system, so as to improve the accuracy of processing loss data of the offshore wind power DC transmission system.

[0005] In order to solve the above problem, an embodiment of the present invention provides a loss data processing method for an offshore wind power DC transmission system, comprising:

[0006] Obtaining operation data of the offshore wind power DC transmission system to be evaluated within a preset time, and determining equipment components, power data and fault data of the offshore wind power DC transmission system based on the operation data;

[0007] According to the equipment components, the system type of the offshore wind power DC transmission system to be evaluated is obtained; wherein the system type includes a symmetrical monopole system or a symmetrical bipole system;

[0008] According to the system type and the power data, the annual average power of the offshore wind power DC transmission system to be evaluated is calculated;

[0009] The fault data and the annual average power are substituted into a preset weighted calculation formula for calculation, and the loss data obtained by the calculation are filled into a preset template to generate a loss data report for the offshore wind power DC transmission system to be evaluated.

[0010] As can be seen from the above, the present invention has the following beneficial effects:

[0011] The present invention provides a method for processing loss data of an offshore wind power DC transmission system, which analyzes the acquired operation data of the offshore wind power DC transmission system to be evaluated, distinguishes the system type of the offshore wind power DC transmission system to be evaluated, calculates the annual average power of the system according to the acquired system type, and calculates the loss data caused by the fault according to a preset weighted calculation formula, and generates a loss data report according to the loss data. The present invention analyzes the loss data caused by the fault of the offshore wind power DC transmission system, calculates it by a preset weighted calculation formula, and improves the accuracy of the fault loss data of the offshore wind power DC transmission system.

[0012] As an improvement of the above scheme, the system type of the offshore wind power DC transmission system to be evaluated is obtained according to the equipment components, specifically: according to the equipment components, the monopole metal loop is identified; when the equipment components do not contain a monopole metal loop, the system type is determined to be a symmetrical monopole system; when the equipment components contain a monopole metal loop, the system type is determined to be a symmetrical bipolar system; by identifying the system type of the equipment components, the foundation is laid for the subsequent analysis methods corresponding to different system types, which is conducive to improving the accuracy of data calculation.

[0013] As an improvement of the above scheme, the annual average power of the offshore wind power DC transmission system to be evaluated is calculated based on the system type and the power data, specifically: when the system type is a symmetrical monopole system, the first year average power is calculated based on the full power, the equivalent full power time and the annual shutdown time; wherein the power data includes: the full power, the equivalent full power time and the annual shutdown time; and the annual average power includes the first year average power; when the system type is a symmetrical bipolar system, the second year average power is calculated based on the power generation capacity, the time when the power generation capacity is higher than the preset value and the power when the power generation capacity is higher than the preset value; wherein the power data includes: the power generation capacity, the time when the power generation capacity is higher than the preset value and the power when the power generation capacity is higher than the preset value; and the annual average power includes the second year average power; by calculating the annual average power of the symmetrical monopole system and the symmetrical bipole system, the differences in operating modes of different system types are fully considered, thereby improving the accuracy of the annual average power.

[0014] As an improvement of the above scheme, the fault data and the annual average power are substituted into a preset weighted calculation formula for calculation, specifically: the submarine cable fault shutdown, equipment fault shutdown and equipment planned maintenance shutdown are analyzed to obtain the preset weighted calculation formula; the fault data include: the number of loop faults, the number of terminal faults, the number of external faults, the submarine cable fault repair time, the equipment maintenance time, the planned maintenance time, the submarine cable length, the number of submarine cable terminals and the electricity price; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the number of loop faults, the number of terminal faults, the number of external faults, the submarine cable fault repair time, the equipment maintenance time, the planned maintenance time, the submarine cable length, the number of submarine cable terminals, the electricity price and the first annual average power are substituted into a preset weighted calculation formula for calculation, specifically: the submarine cable fault shutdown, equipment fault shutdown and equipment planned maintenance shutdown are analyzed to obtain the preset weighted calculation formula; the fault data include: the number of loop faults, the number of terminal faults, the number of external faults, the submarine cable fault repair time, the equipment maintenance time, the planned maintenance time, the submarine cable length, the number of submarine cable terminals, the electricity price and the first annual average power The rate is substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical monopole system; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipole system, the number of loop faults, the number of terminal faults, the number of external faults, the repair time of submarine cable faults, the equipment repair time, the planned maintenance time, the length of the submarine cable, the number of submarine cable terminals, the electricity price and the average power in the second year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical bipole system; according to different annual average powers and in combination with fault data, the preset weighted calculation formula is substituted for calculation, so as to realize calculation for different system types and improve the accuracy of loss data.

[0015] As an improvement of the above scheme, the planned maintenance duration is specifically: when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the planned maintenance duration is a preset duration; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipole system, based on the power generation capacity, the planned maintenance duration is the duration during which the power generation capacity is greater than a preset value; the planned maintenance duration is analyzed in view of the differences in operating modes of different system types, thereby improving the accuracy of the maintenance duration and further improving the accuracy of the loss data.

[0016] As an improvement of the above scheme, the loss data obtained according to the calculation is filled into a preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated, specifically: the fault data is substituted into a table to generate a preset template; the loss data obtained by calculation is filled into the preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated; the loss data report is obtained by filling the fault data and the loss data into the preset template, and the data can be presented intuitively, so that the user can compare and analyze different schemes through the obtained loss data report.

[0017] As an improvement of the above scheme, after generating the loss data report of the offshore wind power DC transmission system to be evaluated, it also includes: generating the total cost of the offshore wind power DC transmission system to be evaluated based on the loss data, combined with the purchase cost of equipment and the maintenance cost of equipment; filling the purchase cost, the maintenance cost and the total cost into the loss data report to obtain a full life cycle economic analysis report of the offshore wind power DC transmission system to be evaluated; by combining the purchase cost and maintenance cost of equipment into the loss data report, it is conducive to conducting a full life cycle economic analysis, and through multi-dimensional data analysis, the analysis accuracy of the offshore wind power DC transmission system is improved.

[0018] Accordingly, an embodiment of the present invention further provides a loss data processing device for an offshore wind power DC transmission system, comprising: an acquisition module, a classification module, a calculation module and a generation module;

[0019] The acquisition module is used to acquire the operating data of the offshore wind power DC transmission system to be evaluated within a preset time, and determine the equipment components, power data and fault data of the offshore wind power DC transmission system according to the operating data;

[0020] The classification module is used to obtain the system type of the offshore wind power DC transmission system to be evaluated according to the equipment components; wherein the system type includes a symmetrical monopole system or a symmetrical bipole system;

[0021] The calculation module is used to calculate and obtain the annual average power of the offshore wind power direct current transmission system to be evaluated according to the system type and the power data;

[0022] The generation module is used to substitute the fault data and the annual average power into a preset weighted calculation formula for calculation, and fill the loss data obtained by the calculation into a preset template to generate a loss data report for the offshore wind power DC transmission system to be evaluated.

[0023] As an improvement of the above scheme, the system type of the offshore wind power DC transmission system to be evaluated is obtained according to the equipment components, specifically: according to the equipment components, the monopole metal loop is identified; when the equipment components do not contain a monopole metal loop, the system type is determined to be a symmetrical monopole system; when the equipment components contain a monopole metal loop, the system type is determined to be a symmetrical bipole system.

[0024] As an improvement of the above scheme, the annual average power of the offshore wind power DC transmission system to be evaluated is calculated based on the system type and the power data, specifically: when the system type is a symmetrical monopole system, the first year's average power is calculated based on the full power, the equivalent full power time and the annual shutdown time; wherein the power data includes: the full power, the equivalent full power time and the annual shutdown time; and the annual average power includes the first year's average power; when the system type is a symmetrical bipolar system, the second year's average power is calculated based on the power generation capacity, the time when the power generation capacity is higher than a preset value, and the power when the power generation capacity is higher than the preset value; wherein the power data includes: the power generation capacity, the time when the power generation capacity is higher than the preset value, and the power when the power generation capacity is higher than the preset value; and the annual average power includes the second year's average power.

[0025] As an improvement of the above scheme, the fault data and the annual average power are substituted into a preset weighted calculation formula for calculation, specifically: the submarine cable fault outage, equipment fault outage and equipment planned maintenance outage are analyzed to obtain the preset weighted calculation formula; the fault data include: the number of loop faults, the number of terminal faults, the number of external faults, the length of submarine cable fault repair, the equipment maintenance time, the planned maintenance time, the length of submarine cable, the number of submarine cable terminals and the electricity price; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the number of loop faults, the number of terminal faults, the number of external faults, the length of submarine cable fault repair, the equipment maintenance time, the planned maintenance time, the length of submarine cable, the number of submarine cable terminals and the electricity price The length of the circuit fault, the planned maintenance time, the length of the submarine cable, the number of submarine cable terminals, the electricity price and the average power in the first year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical monopole system; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipole system, the number of loop faults, the number of terminal faults, the number of external faults, the repair time of the submarine cable fault, the equipment repair time, the planned maintenance time, the length of the submarine cable, the number of submarine cable terminals, the electricity price and the average power in the second year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical bipole system.

[0026] As an improvement of the above scheme, the planned maintenance duration is specifically: when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the planned maintenance duration is a preset duration; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipole system, based on the power generation capacity, the planned maintenance duration is the duration during which the power generation capacity is greater than a preset value.

[0027] As an improvement of the above scheme, the loss data obtained according to the calculation is filled into a preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated, specifically: the fault data is substituted into a table to generate a preset template; the loss data obtained by calculation is filled into the preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated.

[0028] As an improvement of the above scheme, after generating the loss data report of the offshore wind power DC transmission system to be evaluated, it also includes: generating the total cost of the offshore wind power DC transmission system to be evaluated based on the loss data, combined with the purchase cost of equipment and the maintenance cost of equipment; filling the purchase cost, the maintenance cost and the total cost into the loss data report to obtain a full life cycle economic analysis report of the offshore wind power DC transmission system to be evaluated.

[0029] Correspondingly, an embodiment of the present invention further provides a computer terminal device, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, a loss data processing method for an offshore wind power direct current transmission system as described in the present invention is implemented.

[0030] Correspondingly, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute a loss data processing method for an offshore wind power DC transmission system as described in the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of a loss data processing method of an offshore wind power DC transmission system provided by one embodiment of the present invention;

[0032] Figure 2 It is a structural schematic diagram of a loss data processing device for an offshore wind power DC transmission system provided by an embodiment of the present invention;

[0033] Figure 3 It is a schematic diagram of the structure of a terminal device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] See also Figure 1 , Figure 1 FIG. 1 is a flow chart of a method for processing loss data of an offshore wind power DC transmission system provided by an embodiment of the present invention. Figure 1 As shown, this embodiment includes steps 101 to 104, and each step is specifically as follows:

[0037] Step 101: Acquire operating data of an offshore wind power DC transmission system to be evaluated within a preset time, and determine equipment components, power data and fault data of the offshore wind power DC transmission system based on the operating data.

[0038] In this embodiment, the operation data is obtained by extracting data from system operation projects and data from international large power grid conference documents.

[0039] In a specific embodiment, the preset time may be 1 year.

[0040] Step 102: According to the equipment components, the system type of the offshore wind power DC transmission system to be evaluated is obtained; wherein the system type includes a symmetrical monopole system or a symmetrical bipole system.

[0041] In this embodiment, the system type of the offshore wind power DC transmission system to be evaluated is obtained according to the equipment components, specifically:

[0042] According to the equipment components, identifying the monopole metal return line;

[0043] When the equipment assembly does not contain a single-pole metallic return line, the system type is determined to be a symmetrical single-pole system;

[0044] When the equipment assembly contains a single-pole metallic return, the system type is determined to be a symmetrical two-pole system.

[0045] To better illustrate the difference between a symmetrical monopole system and a symmetrical bipole system, a symmetrical bipole system has a monopole metal return line that can transmit half of the power capacity of the offshore wind power DC transmission system. At this time, when the power produced by the system is below the power capacity of the system, even if a fault occurs and the system is shut down, no loss will be caused; while a symmetrical monopole system will immediately cause a loss after a fault occurs and the system is shut down.

[0046] Step 103: Calculate and obtain the annual average power of the offshore wind power DC transmission system to be evaluated according to the system type and the power data;

[0047] In this embodiment, the annual average power of the offshore wind power DC transmission system to be evaluated is calculated based on the system type and the power data, specifically:

[0048] When the system type is a symmetrical monopole system, the first-year average power is calculated based on the full-generation power, the equivalent full-generation time and the annual outage time; wherein the power data includes: the full-generation power, the equivalent full-generation time and the annual outage time; and the annual average power includes the first-year average power;

[0049] When the system type is a symmetrical bipolar system, the second year average power is calculated based on the power generation capacity, the time when the power generation capacity is higher than a preset value, and the power when the power generation capacity is higher than the preset value; wherein the power data includes: the power generation capacity, the time when the power generation capacity is higher than the preset value, and the power when the power generation capacity is higher than the preset value; and the annual average power includes the second year average power.

[0050] In a specific embodiment, the first-year average power calculation formula for a symmetrical monopole system is: first-year average power = full power × equivalent full power hours / actual hours throughout the year; the second-year average power for a symmetrical bipolar system is calculated by calculating the average power of the offshore wind power DC transmission system's power generation capacity exceeding the preset value during the time when the power generation capacity is higher than the preset value.

[0051] In a specific embodiment, the preset value of the system type being a symmetrical bipolar system is half of the power generation capacity.

[0052] Step 104: Substitute the fault data and the annual average power into a preset weighted calculation formula for calculation, and fill the loss data obtained by the calculation into a preset template to generate a loss data report for the offshore wind power DC transmission system to be evaluated.

[0053] In this embodiment, the fault data and the annual average power are substituted into a preset weighted calculation formula for calculation, specifically:

[0054] Analyze the outage due to submarine cable failure, equipment failure and equipment planned maintenance to obtain the preset weighted calculation formula;

[0055] The fault data includes: the number of loop faults, the number of terminal faults, the number of external faults, the duration of submarine cable fault repairs, the duration of equipment repairs, the duration of planned maintenance, the length of submarine cables, the number of submarine cable terminals and the electricity price;

[0056] When the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the number of loop faults, the number of terminal faults, the number of external faults, the length of submarine cable fault repair, the length of equipment repair, the length of planned maintenance, the length of submarine cable, the number of submarine cable terminals, the electricity price and the average power in the first year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical monopole system;

[0057] When the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipolar system, the number of loop failures, the number of terminal failures, the number of external failures, the length of submarine cable failure repairs, the equipment maintenance time, the planned maintenance time, the length of the submarine cable, the number of submarine cable terminals, the electricity price and the average power in the second year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical bipolar system.

[0058] In a specific embodiment, since the outage conditions of the offshore wind power DC transmission system include: outage due to submarine cable failure, outage due to equipment failure and outage due to planned maintenance, the weighted calculation formula is:

[0059] M=M1+M2+M3;

[0060] M1=(n1×L / 100+n2×r / 100+n3×L / 100)×P×T1×k;

[0061] M2=P×T2×k;

[0062] M3=P×T3×k;

[0063] Among them, M is the total loss data, M1 is the submarine cable failure outage loss data, M2 is the submarine cable failure outage loss data, and M3 is the submarine cable failure outage loss data; n1 is the number of loop failures, L is the length of the submarine cable, n2 is the number of terminal failures, r is the number of terminals, n3 is the number of external failures, P is the annual average power (input the first year's average power or the second year's average power according to the system type), T1 is the submarine cable failure repair time, T2 is the equipment maintenance time, T3 is the planned maintenance time, and k is the electricity price.

[0064] In a specific embodiment, data on the number of loop faults, terminal faults and external faults are extracted from the International Large Grid Conference document (Cigre TB379-2009: Update of Service Experience of HV Underground and Submarine Cable Systems). The submarine cable fault repair time is 1200 hours (50 days, including 10 days for submarine cable entry and positioning, 8 days for salvage, 15 days for joint production, and 17 days for restoration and acceptance test.), the equipment maintenance time is 44 hours, and the planned maintenance time is 168 hours (7 days). The length of the submarine cable and the number of submarine cable terminals are obtained from the equipment components of the offshore wind power DC transmission system to be evaluated. The electricity price is determined by the actual price of the power grid. For a better description of the number of faults, please refer to Table 1:

[0065]

[0066] Table 1

[0067] In this embodiment, the planned maintenance duration is specifically:

[0068] When the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the planned maintenance duration is a preset duration;

[0069] When the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipolar system, according to the power generation capacity, the planned maintenance duration is the duration during which the power generation capacity is greater than a preset value.

[0070] In a specific embodiment, since the offshore wind power DC transmission system to be evaluated, whose system type is a symmetrical bipolar system, can transmit half of its power generation capacity through a monopole metal loop, when the power generation capacity of the offshore wind power DC transmission system to be evaluated, whose system type is a symmetrical bipolar system, during the planned maintenance period is less than half of the total power generation capacity, no loss will be caused during this period; if the power generation capacity is greater than half of the total power generation capacity during the planned maintenance period, the time period greater than the total power generation capacity will be used for calculation.

[0071] In this embodiment, the loss data obtained according to the calculation is filled into a preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated, specifically:

[0072] Substituting the fault data into a table to generate a preset template;

[0073] The calculated loss data is filled into the preset template, thereby generating a loss data report for the offshore wind power DC transmission system to be evaluated.

[0074] In a specific embodiment, the preset template includes: constructing a table, wherein the table includes the name of each type of fault data and the data corresponding to each type, as well as the loss data and the data corresponding to the loss data.

[0075] In this embodiment, after generating the loss data report of the offshore wind power DC transmission system to be evaluated, the method further includes:

[0076] According to the loss data, combined with the purchase cost of the equipment and the maintenance cost of the equipment, the total cost of the offshore wind power direct current transmission system to be evaluated is generated;

[0077] The purchase cost, the maintenance cost and the total cost are filled into the loss data report to obtain a full life cycle economic analysis report of the offshore wind power DC transmission system to be evaluated.

[0078] This embodiment analyzes the operation data of the offshore wind power DC transmission system to be evaluated within a preset time, obtains equipment components, power data and fault data, and determines the type of offshore wind power DC transmission system to calculate the annual average power of the offshore wind power DC transmission system, so that weighted calculation can be performed based on the fault data and the annual average power to obtain loss data. This embodiment fully considers the differences in the operation modes of symmetrical monopole and symmetrical bipole of the offshore wind power DC transmission system, provides different annual fault loss analysis methods, improves the calculation accuracy of loss data, and thus better conducts economic analysis of the offshore wind power DC transmission system throughout its project life cycle by obtaining loss data, which is conducive to comprehensive comparison of the benefits of offshore wind power DC transmission systems with different operation schemes.

[0079] Embodiment 2

[0080] See also Figure 2 , Figure 2 It is a structural schematic diagram of a loss data processing device of an offshore wind power DC transmission system provided by an embodiment of the present invention, comprising: an acquisition module 201, a classification module 202, a calculation module 203 and a generation module 204;

[0081] The acquisition module 201 is used to acquire the operation data of the offshore wind power DC transmission system to be evaluated within a preset time, and determine the equipment components, power data and fault data of the offshore wind power DC transmission system according to the operation data;

[0082] The classification module 202 is used to obtain the system type of the offshore wind power DC transmission system to be evaluated according to the equipment components; wherein the system type includes a symmetrical monopole system or a symmetrical bipole system;

[0083] The calculation module 203 is used to calculate and obtain the annual average power of the offshore wind power DC transmission system to be evaluated according to the system type and the power data;

[0084] The generating module 204 is used to substitute the fault data and the annual average power into a preset weighted calculation formula for calculation, and fill the loss data obtained by the calculation into a preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated. Fill the loss data into the preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated.

[0085] As an improvement of the above scheme, the system type of the offshore wind power DC transmission system to be evaluated is obtained according to the equipment components, specifically: according to the equipment components, the monopole metal loop is identified; when the equipment components do not contain a monopole metal loop, the system type is determined to be a symmetrical monopole system; when the equipment components contain a monopole metal loop, the system type is determined to be a symmetrical bipole system.

[0086] As an improvement of the above scheme, the annual average power of the offshore wind power DC transmission system to be evaluated is calculated based on the system type and the power data, specifically: when the system type is a symmetrical monopole system, the first year's average power is calculated based on the full power, the equivalent full power time and the annual shutdown time; wherein the power data includes: the full power, the equivalent full power time and the annual shutdown time; and the annual average power includes the first year's average power; when the system type is a symmetrical bipolar system, the second year's average power is calculated based on the power generation capacity, the time when the power generation capacity is higher than a preset value, and the power when the power generation capacity is higher than the preset value; wherein the power data includes: the power generation capacity, the time when the power generation capacity is higher than the preset value, and the power when the power generation capacity is higher than the preset value; and the annual average power includes the second year's average power.

[0087] As an improvement of the above scheme, the fault data and the annual average power are substituted into a preset weighted calculation formula for calculation, specifically: the submarine cable fault outage, equipment fault outage and equipment planned maintenance outage are analyzed to obtain the preset weighted calculation formula; the fault data include: the number of loop faults, the number of terminal faults, the number of external faults, the length of submarine cable fault repair, the equipment maintenance time, the planned maintenance time, the length of submarine cable, the number of submarine cable terminals and the electricity price; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the number of loop faults, the number of terminal faults, the number of external faults, the length of submarine cable fault repair, the equipment maintenance time, the planned maintenance time, the length of submarine cable, the number of submarine cable terminals and the electricity price The length of the circuit fault, the planned maintenance time, the length of the submarine cable, the number of submarine cable terminals, the electricity price and the average power in the first year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical monopole system; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipole system, the number of loop faults, the number of terminal faults, the number of external faults, the repair time of the submarine cable fault, the equipment repair time, the planned maintenance time, the length of the submarine cable, the number of submarine cable terminals, the electricity price and the average power in the second year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical bipole system.

[0088] As an improvement of the above scheme, the planned maintenance duration is specifically: when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the planned maintenance duration is a preset duration; when the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipole system, based on the power generation capacity, the planned maintenance duration is the duration during which the power generation capacity is greater than a preset value.

[0089] As an improvement of the above scheme, the loss data obtained according to the calculation is filled into a preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated, specifically: the fault data is substituted into a table to generate a preset template; the loss data obtained by calculation is filled into the preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated.

[0090] As an improvement of the above scheme, after generating the loss data report of the offshore wind power DC transmission system to be evaluated, it also includes: generating the total cost of the offshore wind power DC transmission system to be evaluated based on the loss data, combined with the purchase cost of equipment and the maintenance cost of equipment; filling the purchase cost, the maintenance cost and the total cost into the loss data report to obtain a full life cycle economic analysis report of the offshore wind power DC transmission system to be evaluated.

[0091] This embodiment acquires and analyzes the operating data of the offshore wind power DC transmission system to be evaluated through the acquisition module, obtains the system's equipment components, power data and fault data, and inputs them into the classification module to distinguish the system types, and according to the system type distinction results, calculates the annual average power of the wind power DC transmission system through the calculation module, and finally inputs the annual average power and fault data into the generation module for weighted calculation to obtain loss data and a preset template, thereby generating a loss data report based on the obtained loss data. This embodiment can provide a reasonable analysis method based on the technical characteristics and operation mode of the symmetrical unipolar DC system and the symmetrical bipolar DC system, thereby improving the accuracy of the fault loss data of the offshore wind power DC transmission system.

[0092] Embodiment 3

[0093] See also Figure 3 , Figure 3 It is a schematic diagram of the structure of a terminal device provided in one embodiment of the present invention.

[0094] A terminal device of this embodiment includes: a processor 301, a memory 302, and a computer program stored in the memory 302 and executable on the processor 301. When the processor 301 executes the computer program, the steps of the above-mentioned loss data processing method of each offshore wind power DC transmission system in the embodiment are implemented, for example Figure 1 All steps of the method for processing loss data of an offshore wind power DC transmission system shown in the figure. Alternatively, when the processor executes the computer program, the functions of each module in the above-mentioned device embodiments are realized, for example: Figure 2 All modules of the loss data processing device of the offshore wind power DC transmission system are shown.

[0095] In addition, an embodiment of the present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the loss data processing method of the offshore wind power DC transmission system as described in any of the above embodiments.

[0096] Those skilled in the art will understand that the schematic diagram is merely an example of a terminal device and does not constitute a limitation on the terminal device. The terminal device may include more or fewer components than shown in the diagram, or a combination of certain components, or different components. For example, the terminal device may also include input and output devices, network access devices, buses, etc.

[0097] The processor 301 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc. The processor 301 is the control center of the terminal device, and uses various interfaces and lines to connect various parts of the entire terminal device.

[0098] The memory 302 can be used to store the computer program and / or module. The processor 301 implements various functions of the terminal device by running or executing the computer program and / or module stored in the memory and calling the data stored in the memory 302. The memory 302 can mainly include a program storage area and a data storage area, wherein the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory can include a high-speed random access memory, and can also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0099] Wherein, if the module / unit integrated in the terminal device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc.

[0100] It should be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the accompanying drawings of the device embodiments provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines. A person of ordinary skill in the art may understand and implement it without paying any creative effort.

[0101] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for processing loss data of an offshore wind power DC transmission system, characterized in that: include: Obtaining operation data of the offshore wind power DC transmission system to be evaluated within a preset time, and determining equipment components, power data and fault data of the offshore wind power DC transmission system based on the operation data; According to the equipment components, the system type of the offshore wind power DC transmission system to be evaluated is obtained; wherein the system type includes a symmetrical monopole system or a symmetrical bipole system; According to the system type and the power data, the annual average power of the offshore wind power DC transmission system to be evaluated is calculated; The fault data and the annual average power are substituted into a preset weighted calculation formula for calculation, and the loss data obtained by the calculation are filled into a preset template to generate a loss data report for the offshore wind power DC transmission system to be evaluated.

2. The method for processing loss data of an offshore wind power DC transmission system according to claim 1, characterized in that: The system type of the offshore wind power DC transmission system to be evaluated is obtained according to the equipment components, specifically: According to the equipment components, identifying the monopole metal return line; When the equipment assembly does not contain a single-pole metallic return line, the system type is determined to be a symmetrical single-pole system; When the equipment assembly contains a single-pole metallic return, the system type is determined to be a symmetrical two-pole system.

3. The method for processing loss data of an offshore wind power DC transmission system according to claim 2, characterized in that: The annual average power of the offshore wind power DC transmission system to be evaluated is calculated based on the system type and the power data, specifically: When the system type is a symmetrical monopole system, the first-year average power is calculated based on the full-generation power, the equivalent full-generation time and the annual outage time; wherein the power data includes: the full-generation power, the equivalent full-generation time and the annual outage time; and the annual average power includes the first-year average power; When the system type is a symmetrical bipolar system, the second year average power is calculated based on the power generation capacity, the time when the power generation capacity is higher than a preset value, and the power when the power generation capacity is higher than the preset value; wherein the power data includes: the power generation capacity, the time when the power generation capacity is higher than the preset value, and the power when the power generation capacity is higher than the preset value; and the annual average power includes the second year average power.

4. The method for processing loss data of an offshore wind power DC transmission system according to claim 3, characterized in that: Substituting the fault data and the annual average power into a preset weighted calculation formula for calculation is specifically: Analyze the outage due to submarine cable failure, equipment failure and equipment planned maintenance to obtain the preset weighted calculation formula; The fault data includes: the number of loop faults, the number of terminal faults, the number of external faults, the duration of submarine cable fault repairs, the duration of equipment repairs, the duration of planned maintenance, the length of submarine cables, the number of submarine cable terminals and the electricity price; When the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the number of loop faults, the number of terminal faults, the number of external faults, the length of submarine cable fault repair, the length of equipment repair, the length of planned maintenance, the length of submarine cable, the number of submarine cable terminals, the electricity price and the average power in the first year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical monopole system; When the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipolar system, the number of loop failures, the number of terminal failures, the number of external failures, the length of submarine cable failure repairs, the equipment maintenance time, the planned maintenance time, the length of the submarine cable, the number of submarine cable terminals, the electricity price and the average power in the second year are substituted into the weighted calculation formula to obtain the loss data of the offshore wind power DC transmission system to be evaluated whose system type is a symmetrical bipolar system.

5. The method for processing loss data of an offshore wind power DC transmission system according to claim 4, characterized in that: The planned maintenance duration is specifically: When the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical monopole system, the planned maintenance duration is the preset duration; When the system type of the offshore wind power DC transmission system to be evaluated is a symmetrical bipolar system, according to the power generation capacity, the planned maintenance duration is the duration during which the power generation capacity is greater than a preset value.

6. The method for processing loss data of an offshore wind power DC transmission system according to claim 1, characterized in that: The loss data obtained according to the calculation is filled into a preset template to generate a loss data report of the offshore wind power DC transmission system to be evaluated, specifically: Substituting the fault data into a table to generate a preset template; The calculated loss data is filled into the preset template, thereby generating a loss data report for the offshore wind power DC transmission system to be evaluated.

7. The method for processing loss data of an offshore wind power DC transmission system according to claim 1, characterized in that: After generating the loss data report of the offshore wind power DC transmission system to be evaluated, the method further includes: According to the loss data, combined with the purchase cost of the equipment and the maintenance cost of the equipment, the total cost of the offshore wind power direct current transmission system to be evaluated is generated; The purchase cost, the maintenance cost and the total cost are filled into the loss data report to obtain a full life cycle economic analysis report of the offshore wind power DC transmission system to be evaluated.

8. A loss data processing device for an offshore wind power DC transmission system, characterized in that: include: Acquisition module, classification module, calculation module and generation module; The acquisition module is used to acquire the operating data of the offshore wind power DC transmission system to be evaluated within a preset time, and determine the equipment components, power data and fault data of the offshore wind power DC transmission system according to the operating data; The classification module is used to obtain the system type of the offshore wind power DC transmission system to be evaluated according to the equipment components; wherein the system type includes a symmetrical monopole system or a symmetrical bipole system; The calculation module is used to calculate and obtain the annual average power of the offshore wind power direct current transmission system to be evaluated according to the system type and the power data; The generation module is used to substitute the fault data and the annual average power into a preset weighted calculation formula for calculation, and fill the loss data obtained by the calculation into a preset template to generate a loss data report for the offshore wind power DC transmission system to be evaluated.

9. A computer terminal device, characterized in that: It comprises a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, wherein when the processor executes the computer program, it implements a loss data processing method for an offshore wind power direct current transmission system as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute a loss data processing method for an offshore wind power direct current transmission system as described in any one of claims 1 to 7.

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