Method and device for sharing support contribution of shared phase modifier in new energy station

Abstract

The invention discloses an apportionment method and device for support contribution of a shared phase modifier of a new energy station, and relates to the technical field of electric power. The method comprises the following steps: according to predicted output of each new energy station of a new energy base in a target time period, calculating a limit coincidence rate of each new energy station in a shutdown state of all phase modifiers of the new energy base in the target time period; on the basis of the limit coincidence rate, calculating the increase power income generated by the phase modifier of different combinations during combined operation in the target time period; and calculating the contribution value of each phase modifier under each combination to the additional power income according to the additional power income generated when the phase modifiers of the different combinations jointly operate in the target time period. Therefore, the method can achieve the fair sharing of the additional power income among the plurality of phase modifiers which are in combined operation, and provides a feasible scheme for the marketization of the support service of the phase modifiers.

Description

Technical Field

[0001] The present invention relates to the field of power technology, and particularly to a method and device for sharing and apportioning the support contribution of synchronous condensers in new energy power stations. Background Art

[0002] As the installed capacity and proportion of new energy in the future will continue to grow at a high speed and gradually become the main power source, the thermal power units with strong grid support performance will gradually retire or be converted into regulating power sources, resulting in the continuous decline of system inertia and short-circuit capacity, which has become the main bottleneck restricting the consumption of new energy. Deploying synchronous condensers in new energy bases is an effective measure to improve the short-circuit ratio index of multiple power stations and enhance the new energy transmission capacity. To ensure that the system has sufficient voltage support strength to prevent problems such as transient overvoltage, low voltage, and transient voltage instability, the voltage support ability of new energy power stations to the power grid can be improved by deploying distributed synchronous condensers in new energy power stations.

[0003] At present, the investment income of synchronous condensers is limited to the additional power generation income of this power station, and its actual value is underestimated to a certain extent. On the one hand, configuring a synchronous condenser can not only improve the short-circuit capacity of this power station, but also improve the short-circuit capacity of other nearby power stations and the receiving-end system to varying degrees; on the other hand, when there are multiple synchronous condensers in a new energy base jointly improving the new energy transmission capacity, there is a lack of a fair contribution quantification and evaluation method.

[0004] This part aims to provide background or context for the embodiments of the present invention described in the claims. The description herein is not admitted to be prior art merely because it is included in this part. Summary of the Invention

[0005] To solve the above technical problems, embodiments of the present invention provide a method and device for sharing and apportioning the support contribution of synchronous condensers in new energy power stations, which can solve at least part of the above technical problems.

[0006] A method for sharing and apportioning the support contribution of synchronous condensers in new energy power stations provided by an embodiment of the present invention includes:

[0007] Calculating the limit simultaneity rate of each new energy power station in the new energy base at the target time period when all synchronous condensers in the new energy base are in the shutdown state according to the predicted output of each new energy power station in the new energy base at the target time period;

[0008] Calculating the additional power generation income generated when different combinations of the synchronous condensers operate jointly at the target time period based on the limit simultaneity rate;

[0009] Calculating the contribution value of each synchronous condenser to the additional power generation income under each combination according to the additional power generation income generated when different combinations of the synchronous condensers operate jointly at the target time period.

[0010] In some embodiments, calculating the limit simultaneity rate of each new energy power station in the new energy base under the shutdown state of all the phase regulators in the target period according to the predicted power outputs of the new energy power stations in the new energy base in the target period includes:

[0011] Calculating the limit simultaneity rate of each new energy power station in the new energy base under the shutdown state of all the phase regulators in the target period according to the predicted power outputs of the new energy power stations in the new energy base in the target period under the constraints of the minimum short-circuit ratio and transient overvoltage.

[0012] In some embodiments, calculating the additional power generation revenue generated by the combined operation of the phase regulators in different combinations in the target period based on the limit simultaneity rate includes:

[0013] Generating all possible combinations of all the phase regulators;

[0014] For each combination, calculating the additional power generation revenue generated by the combined operation of the phase regulators in this combination for each new energy power station under the constraints of secure and stable operation.

[0015] In some embodiments, the secure and stable operation constraints include at least one of the following: power flow balance constraint and operation constraint, minimum short-circuit ratio constraint, transient voltage peak constraint.

[0016] In some embodiments, the additional power generation revenue generated by the combined operation of the phase regulators in each combination is solved according to the following formula:

[0017]

[0018] In the formula,

[0019] s represents a combination of phase regulators;

[0020] f(s) represents the additional power generation revenue of combination s;

[0021] N G represents the total number of new energy units;

[0022] P gN,i and B i (i = 1, 2,..., N SC ) respectively represent the rated power and on-grid electricity price of new energy unit i;

[0023] λ represents the increment of new energy simultaneity rate after the phase regulator combination s is put into operation.

[0024] In some embodiments, the contribution value of each phase regulator to the additional power generation revenue in each combination is calculated according to the following formula:

[0025]

[0026] In the formula,

[0027] s represents a synchronous condenser combination;

[0028] |s| represents the number of members in the combination s;

[0029] S i represents the synchronous condenser combination including the synchronous condenser i;

[0030] n represents the total number of synchronous condensers in the new energy base;

[0031] represents the contribution of the synchronous condenser i in the combination s;

[0032] v(s\{i}) represents the additional power generation benefit of the combination s before adding the synchronous condenser i;

[0033] v(s) represents the additional power generation benefit when the combination s is put into operation;

[0034] v(s) - v(s\{i}) represents the marginal contribution of the synchronous condenser i in the combination s.

[0035] An apportioning device for the support contribution of a shared synchronous condenser in a new energy power station provided by an embodiment of the present invention includes:

[0036] A first calculation module, configured to calculate the limit simultaneity rate of each new energy power station in the new energy base in a target period when all synchronous condensers in the new energy base are in a shutdown state according to the predicted output of each new energy power station in the new energy base in the target period;

[0037] A second calculation module, configured to calculate the additional power generation benefit generated when different combinations of the synchronous condensers operate jointly in the target period based on the limit simultaneity rate;

[0038] A third calculation module, configured to calculate the contribution value of each synchronous condenser in each combination to the additional power generation benefit according to the additional power generation benefit generated when different combinations of the synchronous condensers operate jointly in the target period.

[0039] In some embodiments, the first calculation module is specifically configured to:

[0040] Calculate the limit simultaneity rate of each new energy power station in the new energy base in the target period when all synchronous condensers in the new energy base are in a shutdown state under the constraints of the minimum short - circuit ratio and the transient over - voltage constraint according to the predicted output of each new energy power station in the new energy base in the target period.

[0041] In some embodiments, the second calculation module is specifically configured to:

[0042] Generate all possible combinations of all the synchronous condensers;

[0043] For each of the combinations, based on the limit simultaneity rate, calculate the additional power generation benefits generated during the combined operation of the synchronous condensers of each of the new energy power stations under the safe and stable operation constraint conditions.

[0044] In some embodiments, the safe and stable operation constraint conditions include at least one of the following: power flow balance constraint and operation constraint, minimum short-circuit ratio constraint, transient voltage peak constraint.

[0045] In some embodiments, the second calculation module solves for the additional power generation benefits generated during the combined operation of the synchronous condensers of each of the combinations according to the following formula:

[0046]

[0047] In the formula,

[0048] s represents a synchronous condenser combination;

[0049] f(s) represents the additional power generation benefits of combination s;

[0050] N G represents the total number of new energy units;

[0051] P gN,i and B i (i = 1, 2,..., N SC ) respectively represent the rated power and on-grid electricity price of new energy unit i;

[0052] λ represents the increment of the new energy simultaneity rate after the synchronous condenser combination s is put into operation.

[0053] In some embodiments, the third calculation module calculates the contribution value of each synchronous condenser to the additional power generation benefits under each of the combinations according to the following formula:

[0054]

[0055] In the formula,

[0056] s represents a synchronous condenser combination;

[0057] |s| represents the number of members in combination s;

[0058] S i represents the synchronous condenser combination including synchronous condenser i;

[0059] n represents the total number of synchronous condensers in the new energy base;

[0060] Represents the contribution of the synchronous condenser i in the combination s;

[0061] v(s\{i}) represents the additional power generation benefit of the combination s before adding the synchronous condenser i;

[0062] v(s) represents the additional power generation benefit when the combination s is put into operation;

[0063] v(s)-v(s\{i}) represents the marginal contribution of the synchronous condenser i in the combination s.

[0064] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method for allocating the support contribution of the shared synchronous condenser in the new energy power station field described in any of the above embodiments is implemented.

[0065] An embodiment of the present invention also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the method for allocating the support contribution of the shared synchronous condenser in the new energy power station field described in any of the above embodiments is implemented.

[0066] An embodiment of the present invention also provides a computer program product. The computer program product includes a computer program. When the computer program is executed by a processor, the method for allocating the support contribution of the shared synchronous condenser in the new energy power station field described in any of the above embodiments is implemented.

[0067] The method and device for allocating the support contribution of the shared synchronous condenser in the new energy power station field provided by the embodiments of the present invention can calculate the ultimate simultaneity rate of the grid-connected power output of each power station in the new energy base when the synchronous condenser is in a fully stopped state according to the current dispatching rules, as the starting point for calculating the additional power generation benefit; and based on the cooperative game theory, taking the synchronous condenser as a participant and the combination of participants as an alliance, enumerate and generate the additional power generation benefits generated by different alliances, and quantify the contribution size of each synchronous condenser as the basis for allocating the additional power generation benefit. It realizes the fair allocation of the additional power generation benefit among multiple jointly operating synchronous condensers and provides a feasible solution for the marketization of the synchronous condenser support service. BRIEF DESCRIPTION OF THE DRAWINGS

[0068] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. In the drawings:

[0069] Figure 1Schematic flowchart of a method for allocating the support contribution of a shared synchronous condenser in a new - energy power station according to an embodiment of the present invention.

[0070] Figure 2 Partial schematic flowchart of a method for allocating the support contribution of a shared synchronous condenser in a new - energy power station according to an embodiment of the present invention.

[0071] Figure 3 Schematic structural diagram of another device for allocating the support contribution of a shared synchronous condenser in a new - energy power station according to an embodiment of the present invention.

[0072] Figure 4 Schematic structural diagram of the physical entity of an electronic device according to an embodiment of the present invention. Detailed implementation manners

[0073] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer and more understandable, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0074] In the technical solutions of the present invention, the information collected is information and data authorized by the user or fully authorized by all parties. Moreover, for the processing of relevant data, such as collection, storage, use, processing, transmission, provision, disclosure, and application, etc., all comply with the relevant laws, regulations, and standards of the relevant countries and regions, adopt necessary confidentiality measures, do not violate public order and good customs, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0075] In the technical solutions of the present invention, the acquisition, transmission, storage, use, processing, etc. of data all comply with the relevant provisions of national laws and regulations.

[0076] It should be noted that in the embodiments of the present invention, some industry - existing solutions such as certain software, components, models, etc. may be mentioned. They should be regarded as exemplary. The purpose is only to illustrate the feasibility in the implementation of the technical solutions of the present invention, but it does not mean that the inventor has already or necessarily used this solution.

[0077] The method for allocating the support contribution of a shared synchronous condenser in a new - energy power station provided by the embodiments of the present invention has an execution subject including but not limited to a computer.

[0078] Figure 1 It is a schematic flowchart of a method for allocating the support contribution of a shared synchronous condenser in a new - energy power station provided by the embodiments of the present invention. As Figure 1 shown, the method for allocating the support contribution of a shared synchronous condenser in a new - energy power station provided by the embodiments of the present invention includes:

[0079] S1. Calculate the limit simultaneity rate of each new energy power station in the new energy base under the shutdown state of all the phase regulators in the target period according to the predicted power outputs of the new energy power stations in the new energy base in the target period.

[0080] S2. Calculate the additional power generation revenue generated when different combinations of the phase regulators operate jointly in the target period based on the limit simultaneity rate.

[0081] S3. Calculate the contribution value of each phase regulator to the additional power generation revenue under each combination according to the additional power generation revenue generated when different combinations of the phase regulators operate jointly in the target period.

[0082] The method for allocating the support contribution of the shared phase regulator in the new energy power station provided by the embodiment of the present invention can calculate the limit simultaneity rate of the grid-connected power outputs of each power station in the new energy base under the full shutdown state of the phase regulator according to the current dispatching rules, which is used as the starting point for calculating the additional power generation revenue; and based on the cooperative game theory, taking the phase regulator as a participant and the combination of participants as a coalition, enumerate and generate the additional power generation revenue generated by different coalitions, and quantify the contribution of each phase regulator, which is used as the basis for allocating the additional power generation revenue. It realizes the fair allocation of the additional power generation revenue among multiple jointly operating phase regulators, and provides a feasible solution for the marketization of the phase regulator support service.

[0083] In some embodiments, the step of calculating the limit simultaneity rate of each new energy power station in the new energy base under the shutdown state of all the phase regulators in the target period according to the predicted power outputs of the new energy power stations in the new energy base in the target period includes: calculating the limit simultaneity rate of each new energy power station in the new energy base under the shutdown state of all the phase regulators in the target period under the minimum short-circuit ratio constraint and the transient overvoltage constraint according to the predicted power outputs of the new energy power stations in the new energy base in the target period.

[0084] Specifically, according to the predicted power outputs reported by the new energy power stations in the target period, all the phase regulators in the new energy base can be shut down, and the limit simultaneity rate λ of the new energy base considering the minimum short-circuit ratio constraint and the transient overvoltage constraint can be calculated. cr , and it is released through the short-circuit capacity ancillary service market trading system. During the target period, the power output of the new energy power station that does not exceed the limit simultaneity rate λ cr does not participate in the short-circuit capacity support service market trading and does not need to pay service fees.

[0085] As Figure 2 shown, in some embodiments, the above step S2 may include:

[0086] S21. Generate all possible combinations of all the phase regulators.

[0087] S22. For each of the combinations, based on the limit simultaneous rate, calculate the additional power generation benefits generated during the combined operation of the synchronous condensers for each of the new energy power stations under the constraints of secure and stable operation.

[0088] In some embodiments, the constraints of secure and stable operation include at least one of the following: power flow balance constraint and operation constraint, minimum short - circuit ratio constraint, transient voltage peak constraint.

[0089] In some embodiments, solve for the additional power generation benefits generated during the combined operation of the synchronous condensers for each of the combinations according to the following formula:

[0090]

[0091] In the formula,

[0092] s represents a synchronous condenser combination;

[0093] f(s) represents the additional power generation benefits of combination s;

[0094] N G represents the total number of new energy units;

[0095] P gN,i and B i (i = 1, 2,..., N SC ) respectively represent the rated power and on - grid electricity price of new energy unit i;

[0096] λ represents the increment of the new energy simultaneous rate after the synchronous condenser combination s is put into operation.

[0097] In some embodiments, calculate the contribution value of each synchronous condenser to the additional power generation benefits for each of the combinations according to the following formula:

[0098]

[0099] In the formula,

[0100] s represents a synchronous condenser combination;

[0101] |s| represents the number of members in combination s;

[0102] S i represents the synchronous condenser combination containing synchronous condenser i;

[0103] n represents the total number of synchronous condensers in the new energy base;

[0104] represents the contribution of synchronous condenser i in combination s;

[0105] v(s\{i}) represents the additional power generation benefits of combination s before adding synchronous condenser i;

[0106] v(s) represents the additional power generation benefit when the combination s is put into operation;

[0107] v(s) - v(s\{i}) represents the marginal contribution of the synchronous condenser i in the combination s.

[0108] To better understand the present invention, the following provides a detailed introduction to the sharing method of the support contribution of the synchronous condenser in the new energy power station through a specific embodiment.

[0109] The sharing method of the support contribution of the synchronous condenser in the new energy power station provided in this embodiment includes the following steps:

[0110] The first step: According to the predicted output reported by the new energy power station in the target period, all synchronous condensers in the new energy base are shut down, and the limit simultaneity rate λ of the new energy base considering the minimum short-circuit ratio constraint and transient overvoltage constraint is calculated cr , which is used as the calculation starting point for the additional power generation when the synchronous condensers operate in combination. During the target period, the output of the new energy power station that does not exceed the limit simultaneity rate λ cr is not included in the additional power generation benefit of the synchronous condenser.

[0111] The second step: Generate the limit simultaneity rate calculation examples for all possible synchronous condenser coalitions

[0112] The i-th synchronous condenser in the new energy base is regarded as the i-th participant in the cooperative game, i = 1, 2,..., N SC , s represents a synchronous condenser coalition (combination), and S i represents the coalition (combination) containing the participant i. Define v(s) to represent the additional power generation benefit when the synchronous condenser coalition (combination) s is put into operation. According to the definition of the Shapley value, enumerate all possible coalitions (combinations), and then generate the corresponding power flow calculation and stability calculation example sets.

[0113] The third step: Calculate the additional power generation benefits of all possible synchronous condenser coalitions

[0114] The additional power generation benefit of the coalition s is equivalent to solving the following optimization problem:

[0115] (I) Objective function:

[0116]

[0117] (II) Constraint conditions:

[0118] 1) Power flow balance constraint and operation constraint

[0119]

[0120] Vi min #V i (l) V i max (6)

[0121] In the formula, P g,i and P d,i respectively represent the active power generation and active power load of node i, V i and V j are the voltage amplitudes of node i and node j respectively, q ij is the phase angle between node i and node j, G ij and B ij are the real part and imaginary part of the admittance matrix elements of node i and node j respectively, Q g,i and Q d,i are the reactive power generation and reactive power load of node i respectively, and are the lower and upper limits of the active power generation of the node. For new energy units, the upper limit of the output is the available output during the corresponding period, and are the lower and upper limits of the reactive power generation of the node, V i min and V i max are the lower and upper limits of the node voltage respectively.

[0122] 2) Minimum short-circuit ratio constraint

[0123] The multi-station short-circuit ratio (MRSCR) of new energy can reflect the voltage support strength of the new energy grid connection point and effectively guide the development and operation of the power grid and new energy. For the case of new energy multi-station access to the AC system, the multi-station short-circuit ratio of the low-voltage side of the step-up transformer of the new energy power generation unit should not be less than 1.5, and the multi-station short-circuit ratio of the new energy grid connection point should not be less than 2.0 and preferably higher than 3.0. Therefore, for the new energy bus i, the multi-station short-circuit ratio constraint is added as

[0124] z MRSCR,i (l) 3 z min,i (7)

[0125] Among them, z MRSCR,i represents the minimum short-circuit ratio of node i, and z min,i represents the minimum short-circuit ratio requirement of node i. For example, it is required to be not less than 1.5.

[0126] 3) Transient voltage peak constraint

[0127] When the grid connection point voltage of the wind farm rises to between 125% and 130% of the nominal voltage, the wind turbines in the wind farm should ensure continuous operation without tripping for 500 ms. Therefore, in actual engineering, adding a transient voltage peak constraint to the new energy bus i can be

[0128]

[0129] In the formula, V peak,i is the voltage peak of bus i after the fault, which needs to be obtained through stability calculation; represents the requirement for the transient voltage peak after the fault. For example, it is required not to exceed 1.3 p.u.

[0130] Equations (1)-(8) can adopt a continuous method, starting from λ = 0 and gradually increasing until the constraint reaches the critical value.

[0131] Step 4: Calculate the contribution value of each synchronous condenser using the Shapley value method

[0132] The contribution of the i-th synchronous condenser is

[0133]

[0134] In the formula, represents the contribution of synchronous condenser i, and v(s\{i}) represents the additional power generation benefit of the coalition s before the addition of synchronous condenser i. Therefore, v(s)-v(s\{i}) represents the marginal contribution of synchronous condenser i in the coalition s.

[0135] Simulation verification:

[0136] There are 3 synchronous condensers in a certain new energy base. To fairly quantify the contribution size during combined operation, the method proposed in the present invention is used to calculate respectively: when synchronous condensers 1, 2, and 3 operate alone, the additional power generation benefits that can be generated are v(1)=100, v(2)=200, v(3)=300. If synchronous condensers 1 and 2 operate in combination, the additional power generation benefit v(1&2)=500 can be generated; if synchronous condensers 2 and 3 operate in combination, the additional power generation benefit v(2&3)=600 can be generated; if synchronous condensers 1 and 3 operate in combination, the additional power generation benefit v(1&3)=700 can be generated; when synchronous condensers 1, 2, and 3 operate in combination, the additional power generation benefit v(1&2&3)=1000 can be generated; then when the 3 synchronous condensers operate in combination, the contribution (profit) of synchronous condenser 1 (similarly for 2 and 3) is: Among them, the calculation process of synchronous condenser 1 is shown in Table 1 below.

[0137] Table 1:

[0138]

[0139]

[0140] It can be seen that the sharing and contribution allocation method of the synchronous condenser support for new energy power stations provided by the embodiments of the present invention can calculate the ultimate simultaneity rate of the grid-connected power outputs of each power station in the new energy base when all synchronous condensers are out of service according to the current dispatching rules, and use it as the starting point for calculating the additional power generation revenue; based on the cooperative game theory, taking the synchronous condenser as a participant and the combination of participants as a coalition, enumerate and generate power flow and stability calculation examples corresponding to different coalitions, and use serial or parallel computing technologies to calculate the additional power generation revenue generated by different coalitions respectively; use the Shapley value method to quantify the contribution of each synchronous condenser, as the basis for allocating the additional power generation revenue, realizing the fair sharing of the additional power generation benefit among multiple synchronous condensers in joint operation. Its physical meaning is clear and the calculation method is simple. At the same time, it considers the minimum short-circuit ratio constraint and transient over-voltage constraint, providing a feasible solution for the marketization of synchronous condenser support services. It fills the gap in the current lack of a reasonable quantitative analysis method for synchronous condenser support contribution and a cost recovery mechanism, and helps to establish a short-circuit capacity ancillary service market.

[0141] Based on the same inventive concept, an apparatus for sharing and contribution allocation of synchronous condenser support for new energy power stations is also provided in the embodiments of the present invention, as described in the following embodiments. Since the principle of solving problems by this apparatus is similar to that of the sharing and contribution allocation method of synchronous condenser support for new energy power stations, the implementation of this apparatus can refer to the implementation of the sharing and contribution allocation method of synchronous condenser support for new energy power stations, and the repeated parts will not be described again.

[0142] As Figure 3 shown, an apparatus for sharing and contribution allocation of synchronous condenser support for new energy power stations provided by the embodiments of the present invention includes:

[0143] A first calculation module 21, configured to calculate the ultimate simultaneity rate of each new energy power station in the new energy base in a target period when all synchronous condensers in the new energy base are out of service according to the predicted power outputs of each new energy power station in the new energy base in the target period;

[0144] A second calculation module 22, configured to calculate the additional power generation revenue generated when different combinations of the synchronous condensers operate jointly in the target period based on the ultimate simultaneity rate;

[0145] A third calculation module 23, configured to calculate the contribution value of each synchronous condenser to the additional power generation revenue under each combination according to the additional power generation revenue generated when different combinations of the synchronous condensers operate jointly in the target period.

[0146] The sharing device for the contribution of the synchronous condenser support in the new energy power station provided by the embodiment of the present invention can calculate the ultimate simultaneity rate of the grid-connected power outputs of each power station in the new energy base when all synchronous condensers are in the shutdown state according to the current dispatching rules, which serves as the starting point for calculating the additional power generation revenue; and based on the cooperative game theory, regarding the synchronous condenser as a participant and the combination of participants as a coalition, enumerating and generating the additional power generation revenues generated by different coalitions, and quantifying the contribution size of each synchronous condenser, which serves as the basis for distributing the additional power generation revenue. It realizes the fair sharing of the additional power generation revenue among multiple jointly operating synchronous condensers, and provides a feasible solution for the marketization of the synchronous condenser support service.

[0147] In some embodiments, the first calculation module 21 is specifically configured to:

[0148] According to the predicted power outputs of each new energy power station in the new energy base during the target period, calculate the ultimate simultaneity rate of each new energy power station in the new energy base when all synchronous condensers are in the shutdown state under the constraints of the minimum short-circuit ratio and transient overvoltage during the target period.

[0149] In some embodiments, the second calculation module 22 is specifically configured to:

[0150] Generate all possible combinations of all the synchronous condensers;

[0151] For each combination, based on the ultimate simultaneity rate, calculate the additional power generation revenue generated when the synchronous condensers in this combination operate jointly for each new energy power station under the constraints of safe and stable operation.

[0152] In some embodiments, the safe and stable operation constraint conditions include at least one of the following: power flow balance constraint and operation constraint, minimum short-circuit ratio constraint, transient voltage peak constraint.

[0153] In some embodiments, the second calculation module 22 solves the additional power generation revenue generated when the synchronous condensers in each combination operate jointly according to the following formula:

[0154]

[0155] In the formula,

[0156] s represents a combination of synchronous condensers;

[0157] f(s) represents the additional power generation revenue of combination s;

[0158] N G represents the total number of new energy units;

[0159] P gN,i and B i (i = 1, 2,..., N SCrepresent the rated power and the on-grid electricity price of the new energy unit i, respectively;

[0160] λ represents the increment of the new energy simultaneity rate after the synchronous condenser combination s is put into operation.

[0161] In some embodiments, the third calculation module 23 calculates the contribution value of each synchronous condenser to the additional power generation benefit under each of the combinations according to the following formula:

[0162]

[0163] In the formula,

[0164] s represents a synchronous condenser combination;

[0165] |s| represents the number of members in the combination s;

[0166] S i represents the synchronous condenser combination including the synchronous condenser i;

[0167] n represents the total number of synchronous condensers in the new energy base;

[0168] represents the contribution of the synchronous condenser i in the combination s;

[0169] v(s\{i}) represents the additional power generation benefit before the synchronous condenser i is added to the combination s;

[0170] v(s) represents the additional power generation benefit when the combination s is put into operation;

[0171] v(s)-v(s\{i}) represents the marginal contribution of the synchronous condenser i in the combination s.

[0172] Figure 4 is a schematic diagram of the entity structure of the electronic device provided by the embodiment of the present invention. As Figure 4 shown, the electronic device 003 includes a processor 301, a memory 302, and a bus 303. Among them, the processor 301 and the memory 302 communicate with each other through the bus 303.

[0173] The processor 301 is used to call the program instructions in the memory 302 to execute the methods provided by the above method embodiments.

[0174] The embodiment of the present invention also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the above method for sharing and apportioning the support contribution of synchronous condensers in a new energy power station is implemented.

[0175] An embodiment of the present invention also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the above-mentioned sharing and contribution allocation method for the new energy power station shared synchronous condenser support.

[0176] Those skilled in the art should understand that the embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0177] The present invention is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of the present invention. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of the flows and / or blocks in the flowchart and / or block diagram can also be implemented. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in one Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0178] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including an instruction device, and the instruction device implements the functions specified in one Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0179] These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process. Therefore, the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0180] The specific embodiments described above further elaborate on the object, technical solution, and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A sharing type amortization method for the contribution of synchronous condensers in new energy power stations, characterized in that including: Calculating the limit simultaneous rate of each new energy power station in the new energy base at the target time period under the shutdown state of all the phase regulators in the new energy base according to the predicted power output of each new energy power station in the new energy base at the target time period; Calculating the additional power generation revenue generated by different combinations of the phase regulators when operating jointly at the target time period based on the limit simultaneous rate; Calculating the contribution value of each phase regulator in each combination to the additional power generation revenue according to the additional power generation revenue generated by different combinations of the phase regulators when operating jointly at the target time period.

2. The method according to claim 1, wherein The calculating the limit simultaneous rate of each new energy power station in the new energy base at the target time period under the shutdown state of all the phase regulators in the new energy base according to the predicted power output of each new energy power station in the new energy base at the target time period includes: Calculating the limit simultaneous rate of each new energy power station in the new energy base at the target time period under the shutdown state of all the phase regulators in the new energy base under the constraints of the minimum short-circuit ratio and transient over-voltage according to the predicted power output of each new energy power station in the new energy base at the target time period.

3. The method according to claim 1, wherein The calculating the additional power generation revenue generated by different combinations of the phase regulators when operating jointly at the target time period based on the limit simultaneous rate includes: Generating all possible combinations of all the phase regulators; For each combination, calculating the additional power generation revenue generated by the joint operation of the phase regulators in this combination under the constraints of safe and stable operation of each new energy power station based on the limit simultaneous rate.

4. The method according to claim 3, characterized in that, The constraints of safe and stable operation include at least one of the following: power flow balance constraint and operation constraint, minimum short-circuit ratio constraint, transient voltage peak constraint.

5. The method according to claim 1, wherein Solving the additional power generation revenue generated by the joint operation of the phase regulators in each combination according to the following formula: In the formula, s represents a phase regulator combination; f(s) represents the additional power generation revenue of combination s; N G represents the total number of new energy generating units; P gN,i and B i (i = 1, 2, ..., N SC ) respectively represent the rated power and the on-grid electricity price of the new energy unit i; λ represents the increment of the new energy simultaneous rate after the phase regulator combination s is put into operation.

6. The method according to claim 1, characterized in that Calculating the contribution value of each phase regulator in each combination to the additional power generation revenue according to the following formula: In the formula, s represents a phase regulator combination; |s| represents the number of members in combination s; S i represents the synchronous condenser combination including synchronous condenser i; n represents the total number of phase regulators in the new energy base; Represents the contribution of the synchronous condenser i in the combination s; v(s\{i}) represents the additional power generation revenue of combination s before adding phase regulator i; v(s) represents the additional power generation revenue when combination s is put into operation; v(s)-v(s\{i}) represents the marginal contribution of phase regulator i in combination s.

7. A sharing type synchronous condenser support contribution sharing device for a new energy power station, characterized in that including: The first calculation module is used to calculate the limit simultaneous rate of each new energy power station in the new energy base at the target time period under the shutdown state of all the phase regulators in the new energy base according to the predicted power output of each new energy power station in the new energy base at the target time period; The second calculation module is used to calculate the additional power generation revenue generated by different combinations of the phase regulators when operating jointly at the target time period based on the limit simultaneous rate; The third calculation module is used to calculate the contribution value of each phase regulator in each combination to the additional power generation revenue according to the additional power generation revenue generated by different combinations of the phase regulators when operating jointly at the target time period.

8. A computer device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that When the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

10. A computer program product, the computer program product comprising a computer program, characterized in that, When the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

Images