Method and device for adjusting new energy low-pass control parameters

Abstract

The invention provides a method and device for adjusting a new energy low-voltage crossing control parameter, and the method comprises the steps: obtaining an active power value of a new energy before a fault and a transient parameter value of the new energy after the fault, and carrying out the iterative adjustment of the active climbing rate of the new energy low-voltage crossing control parameter after the fault of a power system. The method comprises the following steps: determining a new energy operation result based on a new energy operation state criterion through an obtained new energy transient parameter value after iteratively adjusting a corresponding low-pass control parameter, and determining an adjustment result of a corresponding parameter; therefore, the safety and stability of the power angle, voltage and frequency of the system are maintained during the new energy low-voltage crossing fault period.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra - high voltage power transmission, and more specifically, to a method and device for adjusting new - energy low - voltage ride - through control parameters. Background Art

[0002] With the large - scale replacement of synchronous machines by new energy, the power system is gradually transitioning to an electric - power - electronic - based system. The anti - disturbance ability and support ability of the power system have decreased sharply, and the influence range of voltage disturbance under AC - DC faults has expanded. The low - anti - disturbance and easy - switching control characteristics of new energy make high - proportion new - energy systems face huge short - term power impact risks, seriously affecting the safe and stable operation of high - proportion new - energy power systems. In the prior art, during the low - voltage ride - through of new energy after a fault, the control parameters still use typical values set according to experience, and cannot well cope with the huge short - term power impact faced by high - proportion new - energy systems. Therefore, in order to reduce the risk to the stable operation of the system during the low - voltage ride - through of new energy after a fault, it is necessary to conduct in - depth research on the selection of new - energy low - voltage ride - through control parameters. Summary of the Invention

[0003] In order to solve the technical problems in the prior art that during the low - voltage ride - through of new energy in high - proportion new - energy power systems, the system has a high risk of unstable operation due to the inability to effectively adjust control parameters and lacks effective control means, the present invention provides a method and device for adjusting new - energy low - voltage ride - through control parameters.

[0004] According to one aspect of the present invention, a method for adjusting new - energy low - voltage ride - through control parameters is provided, including:

[0005] Obtaining the active power value of new energy before the power system fault and the transient parameter values of new energy at the sampling moment after the power system fault, where the transient parameters include the critical clearing time of the unit in the transient power angle, the maximum transient voltage rise, and the maximum deviation of the transient frequency;

[0006] Based on the set new - energy operation state criterion, determining the operation result of new energy according to the transient parameter values of new energy at the sampling moment which is the initial moment of the fault, where the operation result of new energy includes stable operation and unstable operation;

[0007] When the operation result of new energy is unstable operation, performing a first - parameter adjustment on the active power ramp - up rate of new energy according to the active power ramp - up rate adjustment formula, the active power ramp - up rate adjustment end condition, and the active power value, and determining the final adjusted value of the new - energy low - voltage ride - through control parameter.

[0008] According to another aspect of the present invention, a device for adjusting new - energy low - voltage ride - through control parameters is provided, and the device includes:

[0009] A data acquisition module is used to acquire the active power value of the new energy before the power system fault and the transient parameter values of the new energy at the sampling moment after the power system fault. Among them, the transient parameters include the critical clearing time of the unit in the transient power angle, the maximum transient voltage rise, and the maximum deviation of the transient frequency.

[0010] An operation result module is used to determine the operation result of the new energy based on the set new energy operation state criterion according to the transient parameter values of the new energy at the sampling moment which is the initial moment of the fault. Among them, the operation result of the new energy includes stable operation and unstable operation.

[0011] A first adjustment module is used to, when the operation result of the new energy is unstable operation, perform a first parameter adjustment on the active power ramp rate of the new energy according to the set active power ramp rate adjustment formula, the active power ramp rate adjustment end condition, and the active power value.

[0012] According to another aspect of the present invention, the present invention provides a computer-readable storage medium storing a computer program for executing the method described in any of the above aspects of the present invention.

[0013] According to another aspect of the present invention, an electronic device is provided, which includes: a processor; a memory for storing executable instructions of the processor; the processor is used to read the executable instructions from the memory and execute the instructions to implement the method described in any of the above aspects of the present invention.

[0014] The method and device for adjusting the low-voltage ride-through control parameters of the new energy according to the present invention, wherein the method acquires the active power value of the new energy before the power system fault and the transient parameter values of the new energy at the sampling moment after the power system fault; determines the operation result of the new energy based on the set new energy operation state criterion according to the transient parameter values of the new energy at the sampling moment which is the initial moment of the fault; when the operation result of the new energy is unstable operation, performs a first parameter adjustment on the active power ramp rate of the new energy according to the active power ramp rate adjustment formula, the active power ramp rate adjustment end condition, and the active power value, determines the final adjustment value of the low-voltage ride-through control parameters of the new energy, and when the first parameter adjustment cannot meet the system stability, continues to perform a second parameter adjustment on the dynamic reactive power proportion coefficient of the new energy and a third parameter adjustment on the active current coefficient. The method and device can maintain the safety and stability of the system power angle, voltage, and frequency during the low-voltage ride-through period by adjusting the low-voltage ride-through control parameters during the low-voltage ride-through of the new energy, and preferably maintains the stable operation of the system. Description of the Drawings

[0015] By referring to the following drawings, the exemplary embodiments of the present invention can be more completely understood:

[0016] Figure 1 It is a flowchart of a method for adjusting new - energy low - voltage ride - through control parameters according to a preferred embodiment of the present invention;

[0017] Figure 2 It is a schematic structural diagram of a device for adjusting new - energy low - voltage ride - through control parameters according to a preferred embodiment of the present invention;

[0018] Figure 3 It is a schematic structural diagram of an electronic device according to a preferred embodiment of the present invention. Specific Embodiments

[0019] Now, exemplary embodiments of the present invention will be introduced with reference to the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to disclose the present invention in detail and completely, and to fully convey the scope of the present invention to those skilled in the art. The terms in the exemplary embodiments shown in the drawings are not limitations on the present invention. In the drawings, the same units / components are denoted by the same reference numerals.

[0020] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the ordinary meaning understood by those skilled in the art. Additionally, it can be understood that the terms defined in the commonly used dictionary should be construed as having a meaning consistent with the context of their relevant fields, and should not be construed as idealized or overly formal meanings.

[0021] Exemplary method

[0022] Figure 1 It is a flowchart of a method for adjusting new - energy low - voltage ride - through control parameters according to a preferred embodiment of the present invention. As Figure 1 shown, the method for adjusting new - energy low - voltage ride - through control parameters in this preferred embodiment starts from step 101.

[0023] In step 101, obtain the active - power value of the new energy before the power - system fault and the transient - parameter values of the new energy at the sampling moment after the power - system fault, where the transient parameters include the critical clearing time of the unit in the transient power angle, the maximum transient voltage rise, and the maximum deviation of the transient frequency.

[0024] In this preferred embodiment, analyze the power - angle, voltage, and frequency conditions of the new - energy units for faults such as AC N - 1, N - 2, DC blocking, restart, and commutation failure. The main research objects are the critical clearing time of the unit in the transient power angle of the new energy after the fault, the maximum transient voltage rise, and the maximum deviation of the transient frequency.

[0025] In step 102, based on the set new energy operation status criterion, determine the operation result of the new energy according to the new energy transient parameter value at the sampling moment which is the initial moment of the fault, where the operation result of the new energy includes stable operation and unstable operation.

[0026] Preferably, based on the set new energy operation status criterion, determine the operation result of the new energy according to the new energy transient parameter value at the sampling moment which is the initial moment of the fault. The expression of the new energy operation status criterion is as follows:

[0027]

[0028] In the formula, CCT, ΔU, and Δf are respectively the unit limit cut-off time, the maximum transient voltage rise, and the maximum transient frequency deviation in the transient power angle of the new energy after the power system fault at the sampling moment. CCT min 、ΔU max and Δf max are respectively the set fastest unit cut-off time, the transient voltage rise limit value, and the transient frequency limit value;

[0029] When the new energy transient parameter value obtained at the sampling moment after the power system fault satisfies the new energy operation status criterion, determine that the operation result of the new energy is stable operation; otherwise, it is unstable operation.

[0030] In this preferred embodiment, taking a certain local power grid as an example, set the fastest unit cut-off time CCT min of the new energy, and the transient voltage rise limit value and the transient frequency limit value are 200 ms, 0.3 p.u., and 1.0 Hz respectively. When the new energy limit cut-off time CCT at the initial moment of the fault obtained after the power grid system fault is infinite, greater than 200 ms, the maximum transient voltage rise is 0.47 p.u., greater than 0.3 p.u., and the maximum transient frequency deviation is 1.56 Hz, greater than 1.0 Hz, which means that both the maximum transient voltage rise and the maximum transient frequency deviation do not satisfy the new energy operation status criterion. Therefore, it can be determined that the operation result of the new energy is unstable operation, that is, the new energy cannot operate stably after the fault, there are security and stability problems, and it is necessary to adjust the new energy low voltage ride-through control parameters.

[0031] In step 103, when the operation result of the new energy is unstable operation, perform the first parameter adjustment on the active power ramp rate of the new energy according to the active power ramp rate adjustment formula, the active power ramp rate adjustment end condition, and the active power value, and determine the final adjustment value of the new energy low voltage ride-through control parameter.

[0032] Preferably, when the operation result of the new energy is unstable operation, according to the set active power ramp rate adjustment formula, the active power ramp rate adjustment end condition, and the active power value, perform a first parameter adjustment on the active power ramp rate of the new energy to determine the final adjustment value of the new energy low voltage ride-through control parameter, including:

[0033] Step 3.1, determine the active power ramp rate p-rate of the new energy when performing the nth first parameter adjustment according to the active power ramp rate adjustment formula n , and its expression is:

[0034] p-rate n = p-rate n-1 + K0

[0035] In the formula, p-rate0 is the initial value of the active power ramp rate for the first parameter adjustment set, and K0 is the first parameter adjustment step size, which is a positive number less than 1;

[0036] Step 3.2, obtain the transient parameter value of the new energy at the first sampling moment. The first sampling moment is the moment after the active power ramp rate of the new energy is p-rate n , and based on the new energy operation state criterion and the transient parameter value of the new energy at the first sampling moment, determine the operation result of the new energy;

[0037] Step 3.3, when the operation result of the new energy at the first sampling moment is stable operation, the adjustment of the new energy low voltage ride-through control parameter ends, and determine the final adjustment value of the new energy low voltage ride-through control parameter. The final adjustment values are respectively the active power ramp rate p-rate n , the dynamic reactive power ratio coefficient kq0 and the active current coefficient kp0. Among them, kq0 and kp0 are respectively the initial value of the dynamic reactive power ratio coefficient and the initial value of the active current coefficient;

[0038] Step 3.4, when the operation result of the new energy at the first sampling moment is unstable operation, let t n = P / (p0 * p-rate n ), where P is the active power value, p0 is the rated power of the new energy, and t n is the time for the power of the new energy to recover to the power before the fault;

[0039] Step 3.5, when t n does not meet the active power ramp rate adjustment end condition, let n = n + 1, and return to Step 3.1. When t n meets the active power ramp rate adjustment end condition, the first parameter adjustment ends. Among them, the expression of the active power ramp rate adjustment end condition is:

[0040] t n ≤t0

[0041] Wherein, t0 is the fastest time for the new energy power to recover to the pre-fault power.

[0042] When performing the first parameter adjustment, the adjustment of the active power ramp rate only enhances the stability of power and frequency and has no effect on the maximum transient voltage rise. Therefore, adjusting the active power ramp rate does not affect the maximum transient voltage rise. In this preferred embodiment, p-rate0 and K0 are both set to 0.2, then the active power ramp increases in steps of 0.2p0 / s. Each time the active power ramp rate is adjusted, the operating state of the new energy is determined once according to the transient parameter values obtained at the adjusted sampling moment. When t n satisfies the condition for ending the adjustment of the active power ramp rate. Since the maximum deviation of the system transient frequency is 1.32 Hz, which is still greater than the set transient frequency limit of 1.3 Hz, the operating result of the new energy is unstable operation. Therefore, the first parameter adjustment ends. However, since the operation of the new energy has not reached a steady state, a second parameter adjustment is required, that is, the adjustment of the dynamic reactive power ratio coefficient.

[0043] Preferably,

[0044] The method further includes, when the operating result of the new energy at the first sampling moment is unstable operation and the first parameter adjustment ends, performing a second parameter adjustment on the dynamic reactive power ratio coefficient of the new energy according to the dynamic reactive power ratio coefficient adjustment formula, the dynamic reactive power ratio coefficient constraint condition, and the dynamic reactive power ratio coefficient adjustment end condition, and determining the final adjusted value of the new energy low voltage ride-through control parameter, including:

[0045] Step 4.1, determining the dynamic reactive power ratio coefficient kq of the new energy when performing the mth second parameter adjustment according to the dynamic reactive power ratio coefficient adjustment formula m , and its expression is:

[0046]

[0047] Wherein, when the calculation results of A, B, and C are less than or equal to 0, directly set it to 0 in the formula for calculating kq m , kq0 is the initial value of the dynamic reactive power ratio coefficient set for the second parameter adjustment, and K1, K2, and K3 are the second parameter adjustment coefficients set, all of which are positive numbers less than 1;

[0048] Step 4.2, when kq m satisfies the dynamic reactive power ratio coefficient constraint condition, and m and kq mWhen the dynamic reactive power ratio coefficient adjustment end condition is not satisfied, obtain the transient parameter value of the new energy source at the second sampling moment, where the second sampling moment is the moment after the dynamic reactive power ratio coefficient of the new energy source is kq m and determine the operation result of the new energy source based on the new energy operation state criterion and the transient parameter value of the new energy source at the second sampling moment. When kq m does not satisfy the dynamic reactive power ratio coefficient constraint condition, or m satisfies the dynamic reactive power ratio coefficient adjustment end condition, the second parameter adjustment ends, where the dynamic reactive power ratio coefficient adjustment end condition is m > M, M is the maximum number of times for the second parameter adjustment, or continuously x times |kq m - kq m-1 | ≤ Δkq min , x < M, Δkq min is the minimum value of the set proportional coefficient difference. The expression of the dynamic reactive power ratio coefficient constraint condition is:

[0049] kq min ≤ kq m ≤ kq max

[0050] In the formula, kq min and kq max are respectively the lower limit value and the upper limit value of the set proportional coefficient threshold;

[0051] Step 4.3, when the operation result of the new energy source is stable operation, the adjustment of the new energy low voltage ride-through control parameters ends, and the final adjustment value of the new energy low voltage ride-through control parameters is determined. The final adjustment values are respectively the active power ramp rate p-rate n , the dynamic reactive power ratio coefficient kq m and the active current coefficient kp0, where kp0 is the initial value of the set active current coefficient;

[0052] Step 4.4, when the operation result of the new energy source is unstable operation, let m = m + 1, and return to Step 4.1.

[0053] In this preferred embodiment, kq min and kq max are respectively 1.5 and 3, kq0 is 2.5, K1, K2 and K3 are 0.1. After multiple adjustments according to the dynamic reactive power ratio coefficient adjustment formula, when the maximum number of iterations is reached, the dynamic reactive power ratio coefficient is 2, the maximum transient voltage rise drops to 0.29 p.u., which is less than the transient voltage rise limit of 0.3 p.u., but the maximum deviation of the transient frequency is still greater than the transient frequency limit. Since according to the new energy operation state criterion, the operation result of the new energy source is still unstable operation, therefore, the second parameter adjustment ends, and the third parameter adjustment is still required.

[0054] Preferably,

[0055] the method further includes when kq m does not satisfy the dynamic reactive power ratio coefficient constraint condition, or m satisfies the dynamic reactive power ratio coefficient adjustment end condition, performing a third parameter adjustment on the active current coefficient of the new energy according to the active current coefficient adjustment formula, the active current coefficient constraint condition, and the active current coefficient adjustment end condition, and determining the final adjustment value of the new energy low voltage ride-through control parameter, including:

[0056] Step 5.1, determining the active current coefficient kp when performing the l-th third parameter adjustment according to the active current coefficient adjustment formula l , and its expression is:

[0057]

[0058] In the formula, when the calculation results of A, B, and C are less than or equal to 0, directly set it to 0 in the formula for calculating kp l , kp0 is the initial value of the active current coefficient set for the third parameter adjustment, and K4, K5, and K6 are the third parameter adjustment coefficients set, all of which are positive numbers less than 1;

[0059] Step 5.2, when kp l satisfies the active current coefficient constraint condition, and l and kp l do not satisfy the active current coefficient adjustment end condition, obtaining the transient parameter value of the new energy at the third sampling moment, where the third sampling moment is the moment after the active current coefficient kp of the new energy l , and determining the operation result of the new energy based on the new energy operation state criterion and the transient parameter value of the new energy at the third sampling moment. When kp l does not satisfy the active current coefficient constraint condition, or l satisfies the active current coefficient adjustment end condition, the third parameter adjustment ends, and the final adjustment values of the new energy low voltage ride-through control parameter are output as the active power ramp rate value p-rate n , the active current coefficient kq m-1 and the active current coefficient kp l-1 , where the active current coefficient adjustment end condition is l > L, L is the maximum number of times for the third parameter adjustment, or continuously y times |kp l - kp l-1 | ≤ Δkp min , y < L, and Δkp min is the minimum value of the active current coefficient difference set, and the expression of the active current coefficient constraint condition is:

[0060] kp min ≤ kpl ≤kp max

[0061] wherein, kp min and kp max are respectively the lower limit value and the upper limit value of the set threshold of the active current coefficient;

[0062] Step 5.3, when the operation result of the new energy is stable operation, the adjustment of the new energy low voltage ride-through control parameters ends, and the final adjustment values of the new energy low voltage ride-through control parameters are determined. The final adjustment values are respectively the active power ramp rate value p-rate n , the active current coefficient value kq m and the active current coefficient value kp l ;

[0063] Step 5.4, when the operation result of the new energy is unstable operation, let l = l + 1, and return to Step 5.1.

[0064] In this preferred embodiment, kp min and kp max are respectively set to 0 and 100%, kp0 is set to 50%, K4, K5 and K6 are all set to 5%. After multiple iterations of the active current coefficient, when the active current coefficient is 30%, the transient parameter values of the new energy obtained at the sampling moment all satisfy the new energy operation state criterion, and the operation result of the new energy changes to stable operation. Therefore, the final adjustment values of the adjusted new energy low voltage ride-through control parameters can be determined as the active power ramp power value when the power of the new energy recovers to the pre-fault active power, the dynamic reactive power proportion coefficient is 2, and the active current coefficient is 30%.

[0065] The method for adjusting the new energy low voltage ride-through control parameters according to this preferred embodiment, after a fault occurs in the power system, iteratively adjusts the active power ramp rate of the low voltage ride-through control parameters. When the adjustment of the active power ramp rate does not meet the stable operation of the new energy, then iteratively adjusts the dynamic reactive power proportion coefficient and the active current coefficient in sequence. And after each iterative adjustment of the corresponding low voltage ride-through control parameter, based on the obtained transient parameter values of the new energy and the new energy operation state criterion, it ensures the safety and stability of the system power angle, voltage and frequency during the new energy low voltage ride-through fault.

[0066] Exemplary system

[0067] Figure 2 is a schematic structural diagram of the device for adjusting the new energy low voltage ride-through control parameters according to the preferred embodiment of the present invention. As Figure 2 shown, the device 200 for adjusting the new energy low voltage ride-through control parameters according to this preferred embodiment includes:

[0068] The data acquisition module 201 is configured to acquire the active power value of the new energy before the power system fault and the transient parameter values of the new energy at the sampling moment after the power system fault, where the transient parameters include the critical clearing time of the unit in the transient power angle, the maximum transient voltage rise, and the maximum deviation of the transient frequency;

[0069] The operation result module 202 is configured to determine the operation result of the new energy based on the set new energy operation state criterion and according to the transient parameter values of the new energy at the sampling moment as the initial fault moment, where the operation result of the new energy includes stable operation and unstable operation;

[0070] The first adjustment module 203 is configured to, when the operation result of the new energy is unstable operation, perform a first parameter adjustment on the active power ramp rate of the new energy according to the active power ramp rate adjustment formula, the active power ramp rate adjustment end condition, and the active power value, and determine the final adjustment value of the low voltage ride-through control parameter of the new energy.

[0071] Preferably, the operation result module determines the operation result of the new energy based on the set new energy operation state criterion and according to the transient parameter values of the new energy at the sampling moment as the initial fault moment, where the expression of the new energy operation state criterion is:

[0072]

[0073] In the formula, CCT, ΔU, and Δf are respectively the critical clearing time of the unit in the transient power angle, the maximum transient voltage rise, and the maximum deviation of the transient frequency of the new energy at the sampling moment after the power system fault, CCT min , ΔU max and Δf max are respectively the set fastest clearing time of the unit, the transient voltage rise limit value, and the transient frequency limit value;

[0074] When the transient parameter values of the new energy obtained at the sampling moment after the power system fault satisfy the new energy operation state criterion, it is determined that the operation result of the new energy is stable operation, otherwise, it is unstable operation.

[0075] Preferably, when the operation result of the new energy is unstable operation, the first adjustment module performs a first parameter adjustment on the active power ramp rate of the new energy according to the set active power ramp rate adjustment formula, the active power ramp rate adjustment end condition, and the active power value. The first parameter adjustment to determine the final adjustment value of the low voltage ride-through control parameter of the new energy includes:

[0076] Step 3.1, determine the active power ramp rate p-rate of the new energy when performing the nth first parameter adjustment according to the active power ramp rate adjustment formula n , and its expression is:

[0077] p-rate n = p-rate n-1 + K0

[0078] Wherein, p-rate0 is the initial value of the active power ramp rate of the operating result of the new energy, and K0 is the set first parameter adjustment step, which is a positive number less than 1;

[0079] Step 3.2: Obtain the transient parameter value of the new energy at the first sampling moment. The first sampling moment is the moment after the active power ramp rate of the new energy is p-rate, and based on the new energy operating state criterion and the transient parameter value of the new energy at the first sampling moment, determine the operating result of the new energy; n After that, and determine the operating result of the new energy based on the new energy operating state criterion and the transient parameter value of the new energy at the first sampling moment;

[0080] Step 3.3: When the operating result of the new energy at the first sampling moment is stable operation, the adjustment of the new energy low-voltage ride-through control parameters ends, and the final adjustment values of the new energy low-voltage ride-through control parameters are determined. The final adjustment values are the active power ramp rate p-rate, n The dynamic reactive power proportion coefficient kq0 and the active current coefficient kp0, respectively, where kq0 and kp0 are the initial values of the dynamic reactive power proportion coefficient and the active current coefficient, respectively;

[0081] Step 3.4: When the operating result of the new energy at the first sampling moment is unstable operation, let t n = P / (p0 * p-rate n ), where P is the active power value, p0 is the rated power of the new energy, and t n Is the time for the power of the new energy to recover to the power before the fault;

[0082] Step 3.5: When t n Does not meet the active power ramp rate adjustment end condition, let n = n + 1, and return to Step 3.1. When t n Meets the active power ramp rate adjustment end condition, the first parameter adjustment ends, where the expression of the active power ramp rate adjustment end condition is:

[0083] t n ≤ t0

[0084] Wherein, t0 is the fastest time for the power of the new energy to recover to the power before the fault.

[0085] Preferably,

[0086] The device further includes a second adjustment module, which is used for the operation result of the new energy at the first sampling moment being unstable operation, and when the first parameter adjustment is completed, the dynamic reactive power ratio coefficient of the new energy is secondarily adjusted according to the dynamic reactive power ratio coefficient adjustment formula, the dynamic reactive power ratio coefficient constraint condition, and the dynamic reactive power ratio coefficient adjustment end condition to determine the final adjustment value of the new energy low voltage ride-through control parameter, where:

[0087] Step 4.1, determine the dynamic reactive power ratio coefficient kq of the new energy when performing the m-th second parameter adjustment according to the dynamic reactive power ratio coefficient adjustment formula m , and its expression is:

[0088]

[0089] In the formula, when the calculation results of A, B, and C are less than or equal to 0, directly set them to 0 in the formula for calculating kq m , kq0 is the initial value of the dynamic reactive power ratio coefficient set for the second parameter adjustment, and K1, K2, and K3 are the second parameter adjustment coefficients set, all of which are positive numbers less than 1;

[0090] Step 4.2, when kq m satisfies the dynamic reactive power ratio coefficient constraint condition, and m and kq m do not satisfy the dynamic reactive power ratio coefficient adjustment end condition, obtain the transient parameter value of the new energy at the second sampling moment, where the second sampling moment is the moment after the dynamic reactive power ratio coefficient of the new energy is kq m , and determine the operation result of the new energy based on the new energy operation state criterion and the transient parameter value of the new energy at the second sampling moment. When kq m does not satisfy the dynamic reactive power ratio coefficient constraint condition, or m satisfies the dynamic reactive power ratio coefficient adjustment end condition, the second parameter adjustment ends, where the dynamic reactive power ratio coefficient adjustment end condition is m > M, M is the maximum number of times for the second parameter adjustment, or for x consecutive times |kq m - kq m-1 | ≤ Δkq min , x < M, and Δkq min is the minimum value of the set proportional coefficient difference. The expression of the dynamic reactive power ratio coefficient constraint condition is:

[0091] kq min ≤ kq m ≤ kq max

[0092] In the formula, kq min and kq max are respectively the lower limit value and the upper limit value of the set proportional coefficient threshold;

[0093] Step 4.3, when the operation result of the new energy is stable operation, the adjustment of the new energy low voltage ride-through control parameters ends, and the final adjustment values of the new energy low voltage ride-through control parameters are determined. The final adjustment values are the active power ramp rate p-rate n , the dynamic reactive power ratio coefficient kq m and the active current coefficient kp0, where kp0 is the initial value of the set active current coefficient;

[0094] Step 4.4, when the operation result of the new energy is unstable operation, let m = m + 1, and return to Step 4.1. Preferably, the device further includes a third adjustment module, which is used to when kq m does not meet the dynamic reactive power ratio coefficient constraint condition, or m meets the dynamic reactive power ratio coefficient adjustment end condition, perform a third parameter adjustment on the active current coefficient of the new energy according to the active current coefficient adjustment formula, the active current coefficient constraint condition and the active current coefficient adjustment end condition, and determine the operation result of the new energy and the final adjustment value of the new energy low voltage ride-through control parameters, where:

[0095] Step 5.1, determine the active current coefficient kp when performing the l-th third parameter adjustment according to the active current coefficient adjustment formula l , and its expression is:

[0096]

[0097]

[0098] In the formula, when the calculation results of A, B, and C are less than or equal to 0, directly set it to 0 in the formula for calculating kp l , kp0 is the initial value of the active current coefficient set for the third parameter adjustment, and K4, K5, and K6 are the set third parameter adjustment coefficients, all of which are positive numbers less than 1;

[0099] Step 5.2, when kp l meets the active current coefficient constraint condition, and l and kp l do not meet the active current coefficient adjustment end condition, obtain the transient parameter values of the new energy at the third sampling moment. The third sampling moment is the moment after the active current coefficient kp of the new energy l , and determine the operation result of the new energy based on the new energy operation state criterion and the transient parameter values of the new energy at the third sampling moment. When kp l does not meet the active current coefficient constraint condition, or l meets the active current coefficient adjustment end condition, the third parameter adjustment ends, and the final adjustment values of the new energy low voltage ride-through control parameters are output as the active power ramp rate p-rate n, active current coefficient \(k_q\) m-1 and active current coefficient \(k_p\) l-1 , where the end condition for adjusting the active current coefficient is \(l > L\), \(L\) is the maximum number of times for adjusting the third parameter, or \(|k_p\) l -\(k_p\) l-1 |\(\leq\Delta k_p\) min for \(y < L\), \(\Delta k_p\) min is the minimum value of the set difference of the active current coefficient. The expression of the constraint condition of the active current coefficient is:

[0100] \(k_p\) min \(\leq k_p\) l \(\leq k_p\) max

[0101] In the formula, \(k_p\) min and \(k_p\) max are respectively the lower limit value and the upper limit value of the set threshold of the active current coefficient;

[0102] Step 5.3, when the operation result of the new energy is stable operation, the adjustment of the new energy low voltage ride through control parameters ends, and the final adjustment values of the new energy low voltage ride through control parameters are determined. The final adjustment values are respectively the active power ramp rate \(p - rate\) n , active current coefficient \(k_q\) m and active current coefficient \(k_p\) l ;

[0103] Step 5.4, when the operation result of the new energy is unstable operation, let \(l = l + 1\), and return to Step 5.1.

[0104] The steps of adjusting the new energy low voltage ride through control coefficients during the power system fault by the device for adjusting the new energy low voltage ride through control parameters according to this preferred embodiment are the same as the steps of the method for adjusting the new energy low voltage ride through control parameters of the present invention, and the achieved technical effects are also the same, so they will not be elaborated here.

[0105] Exemplary electronic device

[0106] Figure 3 is a schematic structural diagram of an electronic device according to a preferred embodiment of the present invention. This electronic device can be any one or both of the first device and the second device, or a stand-alone device independent of them. This stand-alone device can communicate with the first device and the second device to receive the input signals collected from them. Figure 3 Illustrates a block diagram of an electronic device according to an embodiment of the present disclosure. As Figure 3 shown, the electronic device includes one or more processors 301 and a memory 302.

[0107] The processor 301 can be a central processing unit (CPU) or other forms of processing units with data processing capabilities and / or instruction execution capabilities, and can control other components in the electronic device to perform desired functions.

[0108] The memory 302 can include one or more computer program products, and the computer program products can include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory can include, for example, random access memory (RAL) and / or cache memory, etc. The non-volatile memory can include, for example, read-only memory (ROL), hard disk, flash memory, etc. One or more computer program instructions can be stored on the computer-readable storage media, and the processor 301 can run the program instructions to implement the energy consumption anomaly diagnosis method based on the enterprise energy consumption space in the various disclosed embodiments above and / or other desired functions. In one example, the electronic device can further include: an input device 303 and an output device 304, and these components are interconnected through a bus system and / or other forms of connection mechanisms (not shown).

[0109] In addition, the input device 303 can further include, for example, a keyboard, a mouse, etc.

[0110] The output device 304 can output various information to the outside. The output device 304 can include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0111] Of course, for simplicity, Figure 3 only some of the components related to the present disclosure in the electronic device are shown, and components such as buses, input / output interfaces, etc. are omitted. In addition, according to specific application scenarios, the electronic device can further include any other appropriate components.

[0112] Exemplary computer program product and computer-readable storage medium

[0113] In addition to the above methods and devices, the embodiments of the present disclosure can also be computer program products, which include computer program instructions that, when run by a processor, cause the processor to execute the steps in the method of adjusting new energy low-ride control parameters according to various embodiments of the present disclosure described in the "Exemplary Method" section above in this specification.

[0114] The computer program product may be written in any combination of one or more programming languages for executing the program code of the operations of the embodiments of the present disclosure. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computing device, partially on the user's device, executed as a stand-alone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0115] In addition, an embodiment of the present disclosure may also be a computer-readable storage medium having computer program instructions stored thereon. When the computer program instructions are run by a processor, the processor is caused to execute the steps in the method of adjusting new energy low-through control parameters according to various embodiments of the present disclosure described in the "Exemplary Method" section above of this specification.

[0116] The computer-readable storage medium may adopt any combination of one or more readable media. The readable media may be a readable signal medium or a readable storage medium. The readable storage medium may, for example, include but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAL), a read-only memory (ROL), an erasable programmable read-only memory (EPROL or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROL), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0117] The basic principles of the present disclosure have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, benefits, effects, etc. mentioned in the present disclosure are only examples and not limitations. It cannot be considered that these advantages, benefits, effects, etc. are essential for each embodiment of the present disclosure. In addition, the above-mentioned specific details are only for the purposes of illustration and facilitating understanding, and are not limitations. The above details do not limit the present disclosure to necessarily adopt the above specific details for implementation.

[0118] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference may be made to each other. For system embodiments, since they basically correspond to method embodiments, the description is relatively simple. For related parts, reference may be made to the partial description of the method embodiments.

[0119] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present disclosure are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended terms, meaning "including but not limited to", and can be used interchangeably with each other. The word "or" and "and" used herein refer to the word "and / or", and can be used interchangeably with each other, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to", and can be used interchangeably with each other.

[0120] The devices and methods of the present disclosure can be implemented in many ways. For example, the devices and methods of the present disclosure can be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of the steps for the method is only for illustration, and the steps of the method of the present disclosure are not limited to the specific order described above, unless otherwise specifically stated. In addition, in some embodiments, the present disclosure can also be implemented as a program recorded in a recording medium, and these programs include machine-readable instructions for implementing the method according to the present disclosure. Therefore, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

[0121] It should also be noted that in the devices, equipment, and methods of the present disclosure, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present disclosure. The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0122] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of the present disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and subcombinations thereof.

Claims

1. A method for adjusting new energy low penetration control parameters, characterized in that: The method comprises: Obtain the active power value of the renewable energy before the power system failure, and the transient parameter value of the renewable energy at the sampling time after the power system failure, wherein the transient parameters include the unit limit cut-off time in the transient power angle, the maximum transient voltage rise and the maximum transient frequency deviation; Based on the set new energy operation state criterion, the operation result of the new energy is determined according to the transient parameter value of the new energy when the sampling time is the initial time of the fault, wherein the operation result of the new energy includes stable operation and unstable operation; When the operation result of the new energy is unstable operation, the first parameter adjustment is performed on the active climbing rate of the new energy according to the active climbing rate adjustment formula and the active climbing rate adjustment end condition, as well as the active power value, to determine the final adjustment value of the new energy low-penetration control parameter.

2. The method according to claim 1, characterized in that: The operation result of the new energy is determined based on the set new energy operation state criterion according to the new energy transient parameter value at the sampling time being the initial time of the fault, wherein the expression of the new energy operation state criterion is: In the formula, CCT, ΔU and Δf are the unit limit removal time, maximum transient voltage rise and maximum transient frequency deviation of the transient power angle of the renewable energy at the sampling time after the power system fault, respectively; CCTmin, ΔUmax and Δfmax are the set unit fastest removal time, transient voltage rise limit and transient frequency limit, respectively; When the transient parameter value of the new energy source obtained at the sampling time after the power system fault meets the new energy source operation state criterion, the operation result of the new energy source is determined to be stable operation, otherwise, it is unstable operation.

3. The method according to claim 1, characterized in that When the operation result of the new energy is unstable operation, the first parameter adjustment is performed on the active climbing rate of the new energy according to the active climbing rate adjustment formula and the active climbing rate adjustment end condition, and the active power value, and the final adjustment value of the new energy low penetration control parameter is determined, including: Step 3.1, determining the active power climbing rate p-rate of the new energy when performing the nth first parameter adjustment according to the active power climbing rate adjustment formula n , whose expression is: p-rate n =p-rate n-1 +K0 Wherein, p-rate0 is the initial value of the active power ramp rate set by the first parameter adjustment, K0 is the adjustment step of the first parameter adjustment, which is a positive number less than 1; Step 3.2, obtain the transient parameter value of the new energy at the first sampling moment, where the active ramp rate of the new energy at the first sampling moment is p-rate n and determining the operation result of the new energy source based on the new energy operation state criterion and the transient parameter value of the new energy source at the first sampling moment; Step 3.3, when the operation result of the new energy at the first sampling moment is stable operation, the adjustment of the new energy low wear control parameter is completed, and the final adjustment value of the new energy low wear control parameter is determined. The final adjustment values ​​are respectively the active climbing rate p-rate n , dynamic reactive power proportional coefficient kq0 and active current coefficient kp0, where kq0 and kp0 are the initial values ​​of the dynamic reactive power proportional coefficient and the initial values ​​of the active current coefficient respectively; Step 3.4: when the operation result of the new energy source at the first sampling time is unstable operation, let t n =P / (p0*p-rate n ), where P is the active power value, p0 is the rated power of the new energy, t n The time it takes for the power of the new energy to recover to the power before the failure; Step 3.5, when t n When the active climbing rate adjustment end condition is not met, set n = n + 1 and return to step 3.

1. n When the active climbing rate adjustment end condition is met, the first parameter adjustment ends, wherein the expression of the active climbing rate adjustment end condition is: t n ≤t0 In the formula, t0 is the fastest time for the power of the new energy to recover to the power before the fault.

4. The method according to claim 3, characterized in that: The method further includes, when the operation result of the new energy at the first sampling moment is unstable operation and the first parameter adjustment is completed, performing a second parameter adjustment on the dynamic reactive proportional coefficient of the new energy according to the dynamic reactive proportional coefficient adjustment formula, the dynamic reactive proportional coefficient constraint condition and the dynamic reactive proportional coefficient adjustment end condition, and determining the final adjustment value of the new energy low penetration control parameter, including: Step 4.1, determining the dynamic reactive power proportional coefficient kq of the new energy when performing the mth second parameter adjustment according to the dynamic reactive power proportional coefficient adjustment formula m , whose expression is: In the formula, when the calculated results of A, B and C are less than or equal to 0, kq m In the formula, it is directly set equal to 0, kq0 is the initial value of the dynamic reactive power proportional coefficient adjusted by the second parameter, K1, K2 and K3 are the second parameter adjustment coefficients, all of which are positive numbers less than 1; Step 4.2, when kq m Satisfy the dynamic reactive power proportional coefficient constraint condition, and m and kq m When the dynamic reactive power proportional coefficient adjustment end condition is not met, the transient parameter value of the new energy at the second sampling time is obtained, and the dynamic reactive power proportional coefficient of the new energy at the second sampling time is kq m The moment after that, and determine the operation result of the new energy based on the new energy operation state criterion and the transient parameter value of the new energy at the second sampling moment, when kq m When the dynamic reactive power proportional coefficient constraint condition is not satisfied, or m satisfies the dynamic reactive power proportional coefficient adjustment end condition, the second parameter adjustment ends, wherein the dynamic reactive power proportional coefficient adjustment end condition m>M, M is the maximum number of times the second parameter adjustment is performed, or x consecutive times|kq m -kq m-1 |≤Δkq min , x<M, Δkq min is the minimum value of the proportional coefficient difference, and the expression of the dynamic reactive proportional coefficient constraint condition is: kg min ≤kg m ≤kg max In the formula, kq min and kq max They are the lower and upper limits of the set proportional coefficient threshold respectively; Step 4.3, when the operation result of the new energy is stable operation, the adjustment of the new energy low penetration control parameter is completed, and the final adjustment value of the new energy low penetration control parameter is determined. The final adjustment values ​​are respectively the active climbing rate p-rate n , dynamic reactive power proportional coefficient kq m and active current coefficient kp0, where kp0 is the initial value of the active current coefficient; Step 4.4, when the operation result of the new energy is unstable operation, set m=m+1 and return to step 4.

1.

5. The method according to claim 4, characterized in that The method also includes when kq m If the dynamic reactive power proportional coefficient constraint condition is not met, or m satisfies the dynamic reactive power proportional coefficient adjustment end condition, when the second parameter adjustment ends, the active current coefficient of the new energy is adjusted by a third parameter according to the active current coefficient adjustment formula, the active current coefficient constraint condition and the active current coefficient adjustment end condition, and the final adjustment value of the new energy low wear control parameter of the operation result of the new energy is determined, including: Step 5.1, determining the active current coefficient kp when performing the third parameter adjustment for the first time according to the active current coefficient adjustment formula l , whose expression is: In the formula, when the calculated results of A, B and C are less than or equal to 0, kp is calculated. l In the formula, it is directly set equal to 0, kp0 is the initial value of the active current coefficient adjusted by the third parameter, K4, K5 and K6 are the third parameter adjustment coefficients set, all of which are positive numbers less than 1; Step 5.2, when kp l The active current coefficient constraint condition is satisfied, and l and kp l When the active current coefficient adjustment end condition is not met, the transient parameter value of the new energy at the third sampling time is obtained, and the third sampling time is the active current coefficient kp of the new energy. l The moment after that, and determine the operation result of the new energy based on the new energy operation state criterion and the transient parameter value of the new energy at the third sampling moment, when kp l When the active current coefficient constraint condition is not met, or the active current coefficient adjustment end condition is met, the third parameter adjustment ends, and the final adjustment value of the output new energy low wear control parameter is respectively the active climbing rate value p-rate n , active current coefficient kq m-1 and active current coefficient kp l-1 , wherein the active current coefficient adjustment end condition l>L, L is the maximum number of times the third parameter is adjusted, or y times in a row|kp l -kp l-1 |≤Δkp min ,y<L,Δkp min The minimum active current coefficient difference is set, and the expression of the active current coefficient constraint condition is: kp min ≤kp l ≤kp max In the formula, kp min and kp max They are the lower limit and upper limit of the active current coefficient threshold respectively; Step 5.3, when the operation result of the new energy is stable operation, the adjustment of the new energy low penetration control parameter is completed, and the final adjustment value of the new energy low penetration control parameter is determined. The final adjustment value is respectively the active climbing rate value p-rate n , active current coefficient value kq m And active current coefficient value kp l ; Step 5.4, when the operation result of the new energy is unstable operation, set l=l+1 and return to step 5.

1.

6. A device for adjusting the control parameters of new energy low penetration, characterized in that: The device comprises: A data acquisition module is used to obtain the active power value of the renewable energy before the power system fails, and the transient parameter value of the renewable energy at the sampling time after the power system fails, wherein the transient parameters include the unit limit cut-off time in the transient power angle, the maximum transient voltage rise and the maximum transient frequency deviation; An operation result module is used to determine the operation result of the new energy based on the set new energy operation state criterion and the new energy transient parameter value at the sampling time being the initial time of the fault, wherein the operation result of the new energy includes stable operation and unstable operation; The first adjustment module is used to perform a first parameter adjustment on the active climbing rate of the new energy according to the active climbing rate adjustment formula and the active climbing rate adjustment end condition, as well as the active power value when the operation result of the new energy is unstable operation, so as to determine the final adjustment value of the new energy low-penetration control parameter.

7. The device according to claim 6, characterized in that The operation result module determines the operation result of the new energy based on the set new energy operation state criterion and the new energy transient parameter value at the sampling time being the initial time of the fault, wherein the expression of the new energy operation state criterion is: Where CCT, ΔU and Δf are the unit limit removal time, maximum transient voltage rise and maximum transient frequency deviation of the renewable energy in the transient power angle at the sampling time after the power system fault, respectively. CCT min , ΔU max and Δf max They are the fastest cut-off time of the set unit, the transient voltage rise limit and the transient frequency limit respectively; When the transient parameter value of the new energy source obtained at the sampling time after the power system fault meets the new energy source operation state criterion, the operation result of the new energy source is determined to be stable operation, otherwise, it is unstable operation.

8. The device according to claim 6, characterized in that When the operation result of the new energy is unstable operation, the first adjustment module performs a first parameter adjustment on the active climbing rate of the new energy according to the set active climbing rate adjustment formula and the active climbing rate adjustment end condition, and the active power value, and determines the final adjustment value of the new energy low penetration control parameter, including: Step 3.1, determining the active power climbing rate p-rate of the new energy when performing the nth first parameter adjustment according to the active power climbing rate adjustment formula n , whose expression is: p-rate n =p-rate n-1 +K0 Wherein, p-rate0 is the initial value of the active ramp rate of the operation result of the new energy, K0 is the first parameter adjustment step set, which is a positive number less than 1; Step 3.2, obtain the transient parameter value of the new energy at the first sampling moment, where the active ramp rate of the new energy at the first sampling moment is p-rate n and determining the operation result of the new energy source based on the new energy operation state criterion and the transient parameter value of the new energy source at the first sampling moment; Step 3.3, when the operation result of the new energy at the first sampling moment is stable operation, the adjustment of the new energy low wear control parameter is completed, and the final adjustment value of the new energy low wear control parameter is determined. The final adjustment values ​​are respectively the active climbing rate p-rate n , dynamic reactive power proportional coefficient kq0 and active current coefficient kp0, where kq0 and kp0 are the initial values ​​of the dynamic reactive power proportional coefficient and the initial values ​​of the active current coefficient respectively; Step 3.4: when the operation result of the new energy source at the first sampling time is unstable operation, let t n =P / (p0*p-rate n ), where P is the active power value, p0 is the rated power of the new energy, t n The time it takes for the power of the new energy to recover to the power before the failure; Step 3.5, when t n When the active climbing rate adjustment end condition is not met, set n = n + 1 and return to step 3.

1. n When the active climbing rate adjustment end condition is met, the first parameter adjustment ends, wherein the expression of the active climbing rate adjustment end condition is: t n ≤t0 In the formula, t0 is the fastest time for the power of the new energy to recover to the power before the fault.

9. The device according to claim 6, characterized in that The device also includes a second adjustment module, which is used for performing a second parameter adjustment on the dynamic reactive power proportional coefficient of the new energy source according to the dynamic reactive power proportional coefficient adjustment formula, the dynamic reactive power proportional coefficient constraint condition and the dynamic reactive power proportional coefficient adjustment end condition when the operation result of the new energy source at the first sampling moment is unstable operation and the first parameter adjustment is completed, and the final adjustment value of the new energy source low penetration control parameter is determined, wherein: Step 4.1, determining the dynamic reactive power proportional coefficient kq of the new energy when performing the mth second parameter adjustment according to the dynamic reactive power proportional coefficient adjustment formula m , whose expression is: In the formula, when the calculated results of A, B and C are less than or equal to 0, kq m In the formula, it is directly set equal to 0, kq0 is the initial value of the dynamic reactive power proportional coefficient adjusted by the second parameter, K1, K2 and K3 are the second parameter adjustment coefficients set, all of which are positive numbers less than 1; Step 4.2, when kq m Satisfy the dynamic reactive power proportional coefficient constraint condition, and m and kq m When the dynamic reactive power proportional coefficient adjustment end condition is not met, the transient parameter value of the new energy at the second sampling time is obtained, and the dynamic reactive power proportional coefficient of the new energy at the second sampling time is kq m The moment after that, and determine the operation result of the new energy based on the new energy operation state criterion and the transient parameter value of the new energy at the second sampling moment, when kq m When the dynamic reactive power proportional coefficient constraint condition is not satisfied, or m satisfies the dynamic reactive power proportional coefficient adjustment end condition, the second parameter adjustment ends, wherein the dynamic reactive power proportional coefficient adjustment end condition m>M, M is the maximum number of times the second parameter adjustment is performed, or x consecutive times|kq m -kq m-1 |≤Δkq min , x<M, Δkq min is the minimum value of the proportional coefficient difference, and the expression of the dynamic reactive proportional coefficient constraint condition is: kg min ≤kg m ≤kg max In the formula, kq min and kq max They are the lower and upper limits of the set proportional coefficient threshold respectively; Step 4.3, when the operation result of the new energy is stable operation, the adjustment of the new energy low penetration control parameter is completed, and the final adjustment value of the new energy low penetration control parameter is determined. The final adjustment values ​​are respectively the active climbing rate p-rate n , dynamic reactive power proportional coefficient kq m and active current coefficient kp0, where kp0 is the initial value of the active current coefficient; Step 4.4, when the operation result of the new energy is unstable operation, set m=m+1 and return to step 4.

1.

10. The device according to claim 6, characterized in that The device also includes a third adjustment module for m When the dynamic reactive power proportional coefficient constraint condition is not met, or m meets the dynamic reactive power proportional coefficient adjustment termination condition, the active current coefficient of the new energy is adjusted by a third parameter according to the active current coefficient adjustment formula, the active current coefficient constraint condition and the active current coefficient adjustment termination condition, and the final adjustment value of the new energy low wear control parameter of the operation result of the new energy is determined, wherein: Step 5.1, determining the active current coefficient kp when performing the third parameter adjustment for the first time according to the active current coefficient adjustment formula l , whose expression is: In the formula, when the calculated results of A, B and C are less than or equal to 0, kp is calculated. l In the formula, it is directly set equal to 0, kp0 is the initial value of the active current coefficient adjusted by the third parameter, K4, K5 and K6 are the third parameter adjustment coefficients set, all of which are positive numbers less than 1; Step 5.2, when kp l The active current coefficient constraint condition is satisfied, and l and kp l When the active current coefficient adjustment end condition is not met, the transient parameter value of the new energy at the third sampling time is obtained, and the third sampling time is the active current coefficient kp of the new energy. l The operation result of the new energy is determined based on the new energy operation state criterion and the transient parameter value of the new energy at the third sampling moment. When kp l When the active current coefficient constraint condition is not met, or the active current coefficient adjustment end condition is met, the third parameter adjustment ends, and the final adjustment value of the output new energy low wear control parameter is respectively the active climbing rate p-rate n , active current coefficient kq m-1 and active current coefficient kp l-1 , wherein the active current coefficient adjustment end condition l>L, L is the maximum number of times the third parameter is adjusted, or y times in a row|kp l -kp l-1 |≤Δkp min ,y<L,Δkp min The minimum active current coefficient difference is set, and the expression of the active current coefficient constraint condition is: kp min ≤kp l ≤kp max In the formula, kp min and kp max They are the lower limit and upper limit of the active current coefficient threshold respectively; Step 5.3, when the operation result of the new energy is stable operation, the adjustment of the new energy low penetration control parameter is completed, and the final adjustment value of the new energy low penetration control parameter is determined. The final adjustment values ​​are respectively the active climbing rate p-rate n , active current coefficient kq m and active current coefficient kp l ; Step 5.4, when the operation result of the new energy is unstable operation, set l=l+1 and return to step 5.

1.

11. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to execute the method according to any one of claims 1 to 5.

12. An electronic device, characterized in that: The electronic device comprises: processor; a memory for storing instructions executable by the processor; The processor is used to read the executable instructions from the memory and execute the instructions to implement the method described in any one of claims 1 to 5.

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