Cooperative control method and device, equipment, storage medium and program product

Abstract

The application relates to a cooperative control method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring a target signal; acquiring a time constant of a reactive compensation device, wherein the time constant of the reactive compensation device comprises a time constant of a first reactive compensation device or a time constant of a second reactive compensation device; and distributing reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy, so as to obtain a first reactive signal corresponding to the first reactive compensation device and a second reactive signal corresponding to the second reactive compensation device. The method can improve the compensation effect of a joint compensation device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic power, and in particular to a cooperative control method and device, a computer device, a storage medium, and a computer program product. BACKGROUND

[0002] With the development of electronic power technology, various static reactive power compensation devices based on dynamic compensation principle have appeared, such as static var compensator (SVC) and static synchronous compensator (STATCOM).

[0003] In order to improve the compensation effect of the reactive power compensation device, different types of reactive power compensation devices need to be jointly operated. However, there is always control coupling in the joint operation of different types of reactive power compensation devices, which reduces the compensation effect of the joint compensation device. Therefore, how to improve the compensation effect of the joint compensation device has become a problem to be solved. SUMMARY

[0004] Therefore, it is necessary to provide a cooperative control method and device capable of improving the compensation effect of a joint compensation device, a computer device, a computer readable storage medium, and a computer program product in view of the above technical problems.

[0005] In a first aspect, the present application provides a cooperative control method, which comprises: acquiring a target signal; acquiring a time constant of a reactive power compensation device, the time constant of the reactive power compensation device comprising a time constant of a first reactive power compensation device or a time constant of a second reactive power compensation device; and distributing reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device.

[0006] In one of the embodiments, the second-order filter coordination strategy comprises a second-order filter transfer function; the second-order filter transfer function is a function constructed according to a time constant and a differential operator; and the distribution of the reactive power corresponding to the target signal according to the time constant and the second-order filter coordination strategy to obtain the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device comprises: obtaining the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device according to the time constant of the first reactive power compensation device and the second-order filter transfer function.

[0007] In one of the embodiments, the second-order filter transfer function is constructed in the following manner: a time-domain high-frequency reactive power integral is constructed according to the first reactive signal, the time constant of the first reactive power compensation device, and the differential operator; and the second-order filter transfer function is constructed according to the time-domain high-frequency reactive power integral.

[0008] In one of the embodiments, the method comprises: obtaining a first grid-side reactive power impulse value according to the target signal, the first reactive signal and the second reactive signal; and adjusting the time constant if the first grid-side reactive power impulse value is greater than a first target value.

[0009] In one of the embodiments, the method comprises: obtaining a fluctuation value of the bus voltage according to the first grid-side reactive power impulse value, a second grid-side reactive power impulse value, a grid-side reactance value and a line voltage amplitude of the bus voltage if the first grid-side reactive power impulse value is less than or equal to the first target value; and adjusting the time constant if the fluctuation value is greater than a second target value, wherein the second grid-side reactive power impulse value is a grid-side reactive power impulse value before the reactive power corresponding to the target signal is allocated.

[0010] In one of the embodiments, the time constant is determined in the following manner: obtaining an application scenario in which the power grid is located, and determining the time constant according to parameters of the first reactive power compensation device and the application scenario in combination with system identification principle; or determining the time constant according to simulation software, input data of the reactive power compensation device and output data of the reactive power compensation device.

[0011] In a second aspect, the application further provides a cooperative control device, which comprises: an acquisition module configured to acquire a target signal; a constant acquisition module configured to acquire a time constant of a reactive power compensation device, wherein the time constant of the reactive power compensation device comprises a time constant of a first reactive power compensation device or a time constant of a second reactive power compensation device; and a distribution module configured to allocate reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy, to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device.

[0012] In a third aspect, the application further provides a computer device. The computer device comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements steps of the above method when executing the computer program.

[0013] In a fourth aspect, the application further provides a computer readable storage medium. The computer readable storage medium stores a computer program, and the computer program implements steps of the above method when executed by a processor.

[0014] In a fifth aspect, the application further provides a computer program product. The computer program product comprises a computer program, and the computer program implements steps of the above method when executed by a processor.

[0015] The above-mentioned cooperative control method, device, computer device, storage medium and computer program product distribute the reactive power corresponding to the target signal through the time constant and the second-order filter coordination strategy to obtain the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device. The first reactive power compensation device and the second reactive power compensation device jointly process the reactive power to be distributed in the power system according to the corresponding first reactive signal and second reactive signal, reduce the coupling of the first reactive power compensation device and the second reactive power compensation device in jointly processing the reactive power to be distributed in the power system, and improve the compensation effect of the joint compensation device composed of the first reactive power compensation device and the second reactive power compensation device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 An application environment diagram of the cooperative control method in an embodiment;

[0017] Figure 2 A flowchart of the cooperative control method in an embodiment;

[0018] Figure 3 A flowchart of the cooperative control method in another embodiment;

[0019] Figure 4 A structure block diagram of the cooperative control device in an embodiment;

[0020] Figure 5 An internal structure diagram of the computer device in an embodiment. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0022] The cooperative control method provided by the embodiments of the present application can be applied to, for example Figure 1The application environment shown. Among them, the terminal 102 communicates with the reactive power compensation device 104. The data storage system can store the data communicated with the reactive power compensation device 104. The data storage system can be integrated on the terminal 102, or placed on the cloud or other network servers. The terminal 102 obtains the target signal; obtain the time constant of the reactive power compensation device, the time constant of the reactive power compensation device includes the time constant of the first reactive power compensation device or the time constant of the second reactive power compensation device; according to the time constant and the second order filter coordination strategy, the target signal is distributed to the corresponding reactive power, and the first reactive power signal corresponding to the first reactive power compensation device and the second reactive power signal corresponding to the second reactive power compensation device are obtained. Among them, the terminal 102 can be, but not limited to, various personal computers, notebook computers, smart phones, tablet computers, Internet of Things devices and portable wearable devices, etc. The terminal 102 can be realized by an independent server or a server cluster composed of multiple servers.

[0023] In one embodiment, as Figure 2 shown, a cooperative control method is provided, which is applied to the terminal in Figure 1 for example, including the following steps:

[0024] Step 202, obtaining the target signal.

[0025] Among them, the target signal is the control signal corresponding to the reactive power to be distributed in the power system, which is used to represent the reactive power to be distributed in the power system.

[0026] Specifically, the terminal obtains the control signal corresponding to the reactive power to be distributed in the power system.

[0027] Step 204, obtaining the time constant of the reactive power compensation device, the time constant of the reactive power compensation device includes the time constant of the first reactive power compensation device or the time constant of the second reactive power compensation device.

[0028] Among them, the reactive power compensation device is a device for adjusting the reactive power in the power system. The time constant of the reactive power compensation device is the inertia time constant of the reactive power compensation device. The reactive power compensation device includes the first reactive power compensation device and the second reactive power compensation device. Optionally, the first reactive power compensation device SVC (Static Var Compensator, static var compensator) is a semi-controlled device. Optionally, the second reactive power compensation device STATCOM (Static Synchronous Compensator, static synchronous compensator) is a fully controlled device, a parallel type reactive power compensation FACTS (Flexible AC Transmission Systems, Flexible AC Transmission Systems) device, which can emit or absorb reactive power and improve power quality of distribution network.

[0029] Specifically, the terminal acquires a time constant of the first reactive power compensation device SVC or a time constant of the second reactive power compensation device STATCOM.

[0030] In step 206, the target signal corresponding reactive power is allocated according to the time constant and the second-order filter coordination strategy, to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device.

[0031] The second-order filter coordination strategy is a strategy for allocating the target signal corresponding reactive power. Optionally, the second-order filter coordination strategy includes a high-pass allocation strategy and / or a low-pass allocation strategy.

[0032] Optionally, when the terminal acquires the time constant of the first reactive power compensation device, the terminal allocates the target signal corresponding reactive power according to the time constant of the first reactive power compensation device and the low-pass allocation strategy, to obtain the first reactive signal of the first reactive power compensation device and the second reactive signal of the second reactive power compensation device. The low-pass allocation strategy is to take the low-frequency filter component corresponding reactive power in the power system to be allocated as the first reactive signal, and take the non-low-frequency filter component corresponding reactive power in the power system as the second reactive signal. The low-frequency filter component in the power system to be allocated is obtained by a low-pass filter.

[0033] Optionally, when the terminal acquires the time constant of the second reactive power compensation device, the terminal allocates the target signal corresponding reactive power according to the time constant of the second reactive power compensation device and the high-pass allocation strategy, to obtain the second reactive signal of the second reactive power compensation device and the second reactive signal of the second reactive power compensation device. The high-pass allocation strategy is to take the high-frequency filter component corresponding reactive power in the power system to be allocated as the second reactive signal, and take the non-high-frequency filter component corresponding reactive power in the power system as the first reactive signal. The high-frequency filter component in the power system to be allocated is obtained by a high-pass filter.

[0034] In the above-mentioned cooperative control method, the target signal corresponding reactive power is allocated according to the time constant and the second-order filter coordination strategy, to obtain the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device. The first reactive power compensation device and the second reactive power compensation device jointly process the power system to be allocated according to the corresponding first reactive signal and the second reactive signal, reduce the coupling of the first reactive power compensation device and the second reactive power compensation device jointly processing the power system to be allocated, and improve the compensation effect of the joint compensation device composed of the first reactive power compensation device and the second reactive power compensation device.

[0035] In one embodiment, the second-order filter coordination strategy comprises a second-order filter transfer function; the second-order filter transfer function is a function constructed according to a time constant and a differential operator; the reactive power corresponding to the target signal is allocated according to the time constant and the second-order filter coordination strategy, to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device, comprising: obtaining the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device according to the time constant of the first reactive power compensation device and the second-order filter transfer function.

[0036] The second-order filter transfer function is used to determine the first reactive signal corresponding to the low-frequency filter component in the reactive power to be allocated in the power system, and the second reactive signal corresponding to the non-low-frequency filter component in the power system.

[0037] Specifically, the second-order filter transfer function is shown in formulas (1) and (2), and the formulas (1) and (2) are as follows:

[0038]

[0039]

[0040] In the formulas (1) and (2), Q load (s) is the target signal, T SVC is the time constant of the first reactive power compensation device, s is the differential operator, Q STATCOM_ref (s) is the second reactive signal. In the formula (2), Q SVC_ref (s) is the first reactive signal.

[0041] In the above-mentioned cooperative control method, the reactive power corresponding to the target signal is allocated according to the time constant of the first reactive power compensation device and the time constant of the second-order filter transfer function, to obtain the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device. The first reactive power compensation device and the second reactive power compensation device jointly process the reactive power to be allocated in the power system according to the corresponding first reactive signal and second reactive signal, reduce the coupling of the first reactive power compensation device and the second reactive power compensation device in jointly processing the reactive power to be allocated in the power system, and improve the compensation effect of the joint compensation device composed of the first reactive power compensation device and the second reactive power compensation device.

[0042] In one embodiment, the second-order filter transfer function is constructed in the following manner: constructing a time-domain high-frequency reactive power integral according to the first reactive signal, the time constant of the first reactive power compensation device and the differential operator; and constructing the second-order filter transfer function according to the time-domain high-frequency reactive power integral.

[0043] Specifically, the time-domain high-frequency reactive power integral is shown in formula (3) as follows:

[0044]

[0045] Let Q load (t) and its derivative be Laplace-transformed, Q load (t) is Laplace-transformed to obtain Q load (s), and Q load (s) has a final value, then the integral action of formula (1) in the second-order filter transfer function in response to the target signal tends to 0, and is irrelevant to the change process of Q load (t) and the time constant T SVC of the first reactive power compensation device. It should be noted that Q load (t) is a time-domain expression of Q load (s).

[0046] Alternatively, the terminal pre-constructs the second-order filter transfer function formula (1) and formula (2) according to formula (3).

[0047] In the above cooperative control method, the second-order filter transfer function is constructed according to the time-domain high-frequency reactive power integral. When the first reactive power compensation device and the second reactive power compensation device jointly process the reactive power to be distributed in the power system according to the second-order filter transfer function, the second reactive signal contains low-frequency components near the handover frequency. The second-order filter transfer function constructed by the time-domain high-frequency reactive power integral has better filtering characteristics in the case that the handover frequency is unchanged, so that the second reactive power compensation device STATCOM bears less low-frequency reactive power and improves its high-frequency reactive power compensation capability. The handover frequency ω can be obtained by formula (4) as follows:

[0048]

[0049] In one embodiment, a first grid-side reactive power impact value is obtained according to the target signal, the first reactive signal and the second reactive signal; and if the first grid-side reactive power impact value is greater than a first target value, the time constant is adjusted.

[0050] Specifically, the calculation formula (5) of the first grid-side reactive power impact value Q grid is as follows:

[0051] Q grid = Q load (t) - Q SVC_out - Q STATCOM_out (5)

[0052] Wherein, Q SVC_out in formula (5) is described in combination with Figure 3 the first reactive signal QSVC_ref (s) obtains a first reactive signal Q SVC_ref (s) inputs into a first reactive compensation device SVC, and the first reactive compensation device performs coordinated control on the first reactive signal to obtain an output Q SVC_out of the first reactive compensation device. Q STATCOM_out According to a second reactive signal Q STATCOM_ref (s) obtained by the terminal. The terminal inputs the second reactive signal Q STATCOM_ref (s) into a second reactive compensation device STATCOM, and the second reactive compensation device performs coordinated control on the second reactive signal to obtain an output Q STATCOM_out .

[0053] wherein a first grid-side reactive impact value Q grid is used to describe the difference of the grid-side reactive power before and after the joint processing of the first reactive compensation device and the second reactive compensation device. The first target value is a specific difference of the grid-side reactive power before and after the joint processing of the first reactive compensation device and the second reactive compensation device, which is used to judge the joint processing effect of the first reactive compensation device and the second reactive compensation device on the grid-side reactive power. It should be noted that the specific value of the first target value is not limited in the present application, and the specific value of the first target value can be adjusted according to the processing capacity of the first reactive compensation device and the second reactive compensation device on the reactive power and / or the specific application scenario of the power system.

[0054] Optionally, the terminal obtains a time domain expression of the target signal, the output of the first reactive compensation device and the output of the second reactive compensation device according to the target signal, the first reactive signal and the second reactive signal. The first grid-side reactive impact value is calculated according to the time domain expression of the target signal, the output of the first reactive compensation device, the output of the second reactive compensation device and formula (5), and the terminal compares the first reactive impact value with the first target value. If the first reactive impact value is greater than the first target value, the time constant is adjusted. Optionally, when the terminal obtains the time constant of the first reactive compensation device and the first reactive impact value is greater than the first target value, the terminal adjusts the time constant of the first reactive compensation device. Correspondingly, when the terminal obtains the time constant of the second reactive compensation device and the first reactive impact value is greater than the first target value, the terminal adjusts the time constant of the second reactive compensation device, and distributes the reactive power corresponding to the target signal according to the adjusted time constant.

[0055] The time constant can be adjusted according to the first grid-side reactive power impact value, the second grid-side reactive power impact value, the grid-side reactance value and the line voltage amplitude of the bus voltage, so that the reliability of the time constant selection is improved, and the compensation effect of the combined compensation device composed of the first reactive power compensation device and the second reactive power compensation device is improved.

[0056] In one embodiment, if the first grid-side reactive power impact value is less than or equal to the first target value, a fluctuation value of the bus voltage is obtained according to the first grid-side reactive power impact value, the second grid-side reactive power impact value, the grid-side reactance value and the line voltage amplitude of the bus voltage; if the fluctuation value is greater than the second target value, the time constant is adjusted; wherein the second grid-side reactive power impact value is the grid-side reactive power impact value before the target signal corresponding reactive power is allocated.

[0057] Specifically, the calculation formula (6) of the fluctuation value ΔU of the bus voltage is as follows:

[0058]

[0059] In the formula (6), X S is the grid-side reactance value, U abc is the line voltage amplitude of the bus voltage, and the calculation formula (7) of ΔQ in the formula (6) is as follows:

[0060] ΔQ = ||Q grid -Q1|| formula (7)

[0061] Q1 in the formula (7) is the second grid-side reactive power impact value.

[0062] Optionally, when the first grid-side reactive power impact value is less than or equal to the first target value, the terminal obtains the fluctuation value ΔQ of the bus voltage according to the first grid-side reactive power impact value Q grid , the second grid-side reactive power impact value Q1, the grid-side reactance value X S and the line voltage amplitude U abc of the bus voltage. The terminal compares the fluctuation value ΔQ of the bus voltage with the second target value, and if the fluctuation value ΔQ of the bus voltage is greater than the second target value, the time constant is adjusted. Optionally, when the terminal obtains the time constant of the first reactive power compensation device, and the fluctuation value ΔQ of the bus voltage is greater than the second target value, the terminal adjusts the time constant of the first reactive power compensation device. Correspondingly, when the terminal obtains the time constant of the second reactive power compensation device, and the fluctuation value ΔQ of the bus voltage is greater than the second target value, the terminal adjusts the time constant of the second reactive power compensation device, and allocates the target signal corresponding reactive power according to the adjusted time constant.

[0063] The time constant can be selected more reliably, and the compensation effect of the combined compensation device composed of the first reactive power compensation device and the second reactive power compensation device can be improved.

[0064] In one embodiment, the time constant is determined in the following manner: obtaining an application scenario in which the power grid is located, and determining the time constant according to the parameters of the first reactive power compensation device and the application scenario in combination with a system identification principle; or determining the time constant according to simulation software, input data of the reactive power compensation device, and output data of the reactive power compensation device.

[0065] Optionally, when the application scenario in which the power grid is located is a nonlinear time-varying load application scenario, the terminal determines the time constant of the corresponding first reactive power compensation device according to a dead time of thyristor controlled reactor (TCR) triggering in the first reactive power compensation device SVC and a system identification principle.

[0066] Optionally, the terminal measures input and output signals of the first reactive power compensation device SVC according to an identification tool in simulation software matlab, and obtains the time constant of the first reactive power compensation device. Correspondingly, the terminal measures input and output signals of the second reactive power compensation device STATCOM according to the identification tool in the simulation software matlab, and obtains the time constant of the second reactive power compensation device. Optionally, the terminal processes the input and output signals of the reactive power compensation device according to an identification algorithm and a transfer function of the identification tool, and obtains the corresponding time constant.

[0067] In the above-mentioned cooperative control method, the time constant of the reactive power compensation device is obtained through simulation software and / or system identification principle.

[0068] In one embodiment, the target signal corresponding reactive power is obtained in the following manner: obtaining active power consumption, a triggering angle of a thyristor device, a commutation overlap angle of a converter unit, and a third reactive power of transformer excitation; and obtaining the target signal corresponding reactive power according to the active power consumption, the triggering angle, the commutation overlap angle, and the third reactive power.

[0069] Specifically, the time domain expression of the target signal corresponding reactive power is Q load The calculation formula (8) is as follows:

[0070]

[0071] In the formula (8), P CONVP is an active power consumption, used to describe the active power consumption of a converter unit in a high-power power supply system in a power distribution network; a is a trigger angle of a thyristor device; g is a commutation overlap angle of the converter unit; Q m Q is a third reactive power for transformer excitation, used to describe the reactive power for transformer excitation.

[0072] Optionally, the terminal obtains the active power consumption P CONV , the trigger angle a of the thyristor device, the commutation overlap angle g of the converter unit, and the third reactive power Q m for transformer excitation. CONV , the trigger angle a of the thyristor device, the commutation overlap angle g of the converter unit, and the third reactive power Q m for transformer excitation, and formula (8) to obtain a time-domain expression Q load (t) corresponding to the target signal, and performs Laplace transformation on Q load (t) to obtain the Laplace-transformed Q load (s) of the target signal.

[0073] In one embodiment, obtaining the active power consumption P CONV includes: obtaining a direct-current side voltage of the converter unit, a direct-current side current of the converter unit, and a resistance of the transformer; and calculating the active power consumption according to the direct-current side voltage, the direct-current side current, and the resistance.

[0074] Specifically, the calculation formula (9) of the active power consumption P CONV is as follows:

[0075]

[0076] In formula (9), U d is the direct-current side voltage of the converter unit, I d is the direct-current side current of the converter unit, R tra is the resistance of the transformer, and f is the grid frequency.

[0077] In one embodiment, obtaining the trigger angle a includes: obtaining a root mean square value of a bus side voltage of the converter unit, a grid frequency, and an inductance of the transformer; and calculating the trigger angle according to the direct-current side voltage, the direct-current side current, the resistance, the root mean square value, the inductance, and the grid frequency.

[0078] Specifically, the calculation formula (10) of the trigger angle a is as follows:

[0079]

[0080] In formula (10), U abc_rms is the root mean square value of the bus side voltage of the converter unit, f is the grid frequency, and L traL is an inductance of the transformer. In one embodiment, the commutation overlap angle γ is obtained, comprising: calculating the commutation overlap angle according to the DC side current, the root mean square value, the inductance, the grid frequency and the firing angle.

[0081] Specifically, the calculation formula (11) of the commutation overlap angle γ is as follows:

[0082]

[0083] It should be understood that, although each step in the flowchart involved in each embodiment as described above is shown in sequence according to the arrow, these steps are not necessarily executed in sequence according to the arrow. Unless explicitly stated herein, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, at least part of the steps in the flowchart involved in each embodiment as described above can include multiple steps or multiple stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be alternately executed with at least part of other steps or steps or stages in other steps.

[0084] Based on the same inventive concept, the embodiments of the present application also provide a cooperative control device for implementing the above-mentioned cooperative control method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more cooperative control device embodiments provided below can refer to the limitations of the cooperative control method in the above text, which will not be repeated here.

[0085] In one embodiment, as shown in Figure 4 a cooperative control device is provided, comprising: an acquisition module 100, a constant acquisition module 200 and a distribution module 300, wherein:

[0086] The acquisition module 100 is configured to acquire a target signal.

[0087] The constant acquisition module 200 is configured to acquire a time constant of a reactive power compensation device, the time constant of the reactive power compensation device comprising a time constant of a first reactive power compensation device or a time constant of a second reactive power compensation device.

[0088] The distribution module 300 is configured to distribute reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy, to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device.

[0089] In one embodiment, the distribution module comprises:

[0090] According to the time constant of the first reactive power compensation device and the second-order filter transfer function, a first reactive power signal corresponding to the first reactive power compensation device and a second reactive power signal corresponding to the second reactive power compensation device are obtained.

[0091] In one embodiment, the distribution module comprises:

[0092] The integral construction module is configured to construct a time-domain high-frequency reactive power integral according to the first reactive power signal, the time constant of the first reactive power compensation device and a differential operator.

[0093] The transfer function construction module is configured to construct a second-order filter transfer function according to the time-domain high-frequency reactive power integral.

[0094] In one embodiment, the cooperative control device comprises:

[0095] The first calculation module is configured to obtain a first grid-side reactive power impact value according to the target signal, the first reactive power signal and the second reactive power signal.

[0096] The first adjustment module is configured to adjust the time constant if the first grid-side reactive power impact value is greater than the first target value.

[0097] In one embodiment, the cooperative control device comprises:

[0098] The second calculation module is configured to obtain a fluctuation value of the bus voltage according to the first grid-side reactive power impact value, a second grid-side reactive power impact value, a grid-side reactance value and a line voltage amplitude of the bus voltage if the first grid-side reactive power impact value is less than or equal to the first target value.

[0099] The second adjustment module is configured to adjust the time constant if the fluctuation value is greater than a second target value, wherein the second grid-side reactive power impact value is a grid-side reactive power impact value before the target signal is distributed to the first reactive power compensation device.

[0100] In one embodiment, the constant acquisition module comprises:

[0101] The first acquisition module is configured to acquire an application scenario in which the power grid is located, and determine the time constant according to parameters of the first reactive power compensation device and the application scenario in combination with a system identification principle; or

[0102] The second acquisition module is configured to determine the time constant according to simulation software, input data of the reactive power compensation device and output data of the reactive power compensation device.

[0103] The above-mentioned various modules in the cooperative control device can be all or partially realized by software, hardware and a combination thereof. The above-mentioned various modules can be embedded in or independent of a processor in a computer device in a hardware form, or can be stored in a memory in the computer device in a software form, so as to be called and executed by a processor to perform operations corresponding to the above-mentioned various modules.

[0104] In one embodiment, a computer device is provided, which can be a terminal, and an internal structure diagram thereof can be as shown in the figure. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. The processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for running the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is configured to perform wired or wireless communication with an external terminal. The wireless communication can be achieved through WIFI, mobile cellular network, NFC (Near Field Communication) or other technologies. The computer program is executed by the processor to implement a cooperative control method. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or a key, trackball or touchpad arranged on the shell of the computer device, or an external keyboard, touchpad or mouse, etc. Figure 5

[0105] Those skilled in the art can understand that the structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components. Figure 5

[0106] In one embodiment, a computer device is provided, which includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the following steps are implemented: obtaining a target signal; obtaining a time constant of a reactive power compensation device, the time constant of the reactive power compensation device including a time constant of a first reactive power compensation device or a time constant of a second reactive power compensation device; and distributing reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device.

[0107] ​​In one of the embodiments, the second-order filter coordination strategy implemented by the processor when executing the computer program comprises a second-order filter transfer function; the second-order filter transfer function is a function constructed according to a time constant and a differential operator; the distribution of the reactive power corresponding to the target signal according to the time constant and the second-order filter coordination strategy obtains a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device, comprising: obtaining the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device according to the time constant of the first reactive power compensation device and the second-order filter transfer function.

[0108] In one of the embodiments, the second-order filter transfer function implemented by the processor when executing the computer program is constructed in the following manner: constructing a time-domain high-frequency reactive power integral according to the first reactive signal, the time constant of the first reactive power compensation device and the differential operator; constructing the second-order filter transfer function according to the time-domain high-frequency reactive power integral.

[0109] In one of the embodiments, the processor when executing the computer program further implements the following steps: obtaining a first grid-side reactive power impact value according to the target signal, the first reactive signal and the second reactive signal; if the first grid-side reactive power impact value is greater than a first target value, adjusting the time constant.

[0110] In one of the embodiments, the processor when executing the computer program further implements the following steps: if the first grid-side reactive power impact value is less than or equal to the first target value, obtaining a bus voltage fluctuation value according to the first grid-side reactive power impact value, a second grid-side reactive power impact value, a grid-side reactance value and a line voltage amplitude of the bus voltage; if the fluctuation value is greater than a second target value, adjusting the time constant; wherein the second grid-side reactive power impact value is a grid-side reactive power impact value before the distribution of the reactive power corresponding to the target signal.

[0111] In one of the embodiments, the time constant implemented by the processor when executing the computer program is determined in the following manner: obtaining an application scenario in which the power grid is located, and determining the time constant according to the parameters of the first reactive power compensation device and the application scenario in combination with a system identification principle; or determining the time constant according to a simulation software, input data of the reactive power compensation device and output data of the reactive power compensation device.

[0112] In one of the embodiments, a computer readable storage medium is provided, and the computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the following steps: obtaining a target signal; obtaining a time constant of a reactive power compensation device, the time constant of the reactive power compensation device comprising a time constant of a first reactive power compensation device or a time constant of a second reactive power compensation device; and distributing reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device.

[0113] In one of the embodiments, the second-order filter coordination strategy implemented by the computer program when executed by the processor comprises a second-order filter transfer function; the second-order filter transfer function is a function constructed according to a time constant and a differential operator; the reactive power corresponding to the target signal is allocated according to the time constant and the second-order filter coordination strategy, to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device, comprising: obtaining the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device according to the time constant of the first reactive power compensation device and the second-order filter transfer function.

[0114] In one of the embodiments, the second-order filter transfer function implemented by the computer program when executed by the processor is constructed in the following manner: constructing a time-domain high-frequency reactive power integral according to the first reactive signal, the time constant of the first reactive power compensation device and the differential operator; constructing the second-order filter transfer function according to the time-domain high-frequency reactive power integral.

[0115] In one of the embodiments, the computer program when executed by the processor further implements the following steps: obtaining a first grid-side reactive power impact value according to the target signal, the first reactive signal and the second reactive signal; if the first grid-side reactive power impact value is greater than a first target value, adjusting the time constant.

[0116] In one of the embodiments, the computer program when executed by the processor further implements the following steps: if the first grid-side reactive power impact value is less than or equal to the first target value, obtaining a bus voltage fluctuation value according to the first grid-side reactive power impact value, a second grid-side reactive power impact value, a grid-side reactance value and a line voltage amplitude of the bus voltage; if the fluctuation value is greater than a second target value, adjusting the time constant; wherein the second grid-side reactive power impact value is a grid-side reactive power impact value before the reactive power corresponding to the target signal is allocated.

[0117] In one of the embodiments, the time constant implemented by the computer program when executed by the processor is determined in the following manner: obtaining an application scenario in which the power grid is located, and determining the time constant according to parameters of the first reactive power compensation device and the application scenario in combination with a system identification principle; or determining the time constant according to a simulation software, input data of the reactive power compensation device and output data of the reactive power compensation device.

[0118] In one embodiment, a computer program product is provided, comprising a computer program which, when executed by a processor, implements the following steps: obtaining a target signal; obtaining a time constant of a reactive power compensation device, the time constant of the reactive power compensation device comprising a time constant of a first reactive power compensation device or a time constant of a second reactive power compensation device; and distributing reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device.

[0119] In one embodiment, the second-order filter coordination strategy implemented by the computer program when executed by the processor comprises a second-order filter transfer function; the second-order filter transfer function is a function constructed according to the time constant and a differential operator; and the distributing of the reactive power corresponding to the target signal according to the time constant and the second-order filter coordination strategy to obtain the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device comprises: obtaining the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device according to the time constant of the first reactive power compensation device and the second-order filter transfer function.

[0120] In one embodiment, the second-order filter transfer function is constructed in the following manner: constructing a time-domain high-frequency reactive power integral according to the first reactive signal, the time constant of the first reactive power compensation device and the differential operator; and constructing the second-order filter transfer function according to the time-domain high-frequency reactive power integral.

[0121] In one embodiment, the computer program, when executed by the processor, further implements the following steps: obtaining a first grid-side reactive power impact value according to the target signal, the first reactive signal and the second reactive signal; and adjusting the time constant if the first grid-side reactive power impact value is greater than a first target value.

[0122] In one embodiment, the computer program, when executed by the processor, further implements the following steps: obtaining a fluctuation value of a bus voltage according to the first grid-side reactive power impact value, a second grid-side reactive power impact value, a grid-side reactance value and a line voltage amplitude of the bus voltage if the first grid-side reactive power impact value is less than or equal to the first target value; and adjusting the time constant if the fluctuation value is greater than a second target value; the second grid-side reactive power impact value is a grid-side reactive power impact value before the distribution of the reactive power corresponding to the target signal.

[0123] In one embodiment, the time constant is determined in the following manner: obtaining an application scenario in which the power grid is located; and determining the time constant according to parameters of the first reactive power compensation device and the application scenario in combination with a system identification principle; or determining the time constant according to a simulation software, input data of the reactive power compensation device and output data of the reactive power compensation device.

[0124] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties.

[0125] It can be understood by those skilled in the art that all or part of the processes in the above-mentioned embodiment methods can be completed by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. Any reference to memory, database or other medium used in the embodiments provided by the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided by the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided by the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.

[0126] The technical features of the above embodiments can be combined in any way. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0127] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A method of coordinated control, characterized by, The method comprises: acquiring a target signal; acquiring a time constant of a reactive power compensation device, the time constant of the reactive power compensation device comprising a time constant of a first reactive power compensation device or a time constant of a second reactive power compensation device; allocating reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device; the second-order filter coordination strategy comprises a second-order filter transfer function; the second-order filter transfer function is a function constructed according to a time constant and a differential operator; the allocation of the reactive power corresponding to the target signal according to the time constant and the second-order filter coordination strategy to obtain the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device comprises: obtaining the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device according to the time constant of the first reactive power compensation device and the second-order filter transfer function; the second-order filter transfer function is constructed in the following manner: constructing a time-domain high-frequency reactive power integral according to the first reactive signal, the time constant of the first reactive power compensation device and the differential operator; constructing the second-order filter transfer function according to the time-domain high-frequency reactive power integral.

2. The method of claim 1, wherein, The method comprises: obtaining a first grid-side reactive power impact value according to the target signal, the first reactive signal and the second reactive signal; if the first grid-side reactive power impact value is greater than a first target value, adjusting the time constant.

3. The method of claim 2, wherein, The method comprises: if the first grid-side reactive power impact value is less than or equal to the first target value, obtaining a bus voltage fluctuation value according to the first grid-side reactive power impact value, a second grid-side reactive power impact value, a grid-side reactance value and a line voltage amplitude of a bus voltage; if the fluctuation value is greater than a second target value, adjusting the time constant; wherein the second grid-side reactive power impact value is a grid-side reactive power impact value before the allocation of the reactive power corresponding to the target signal.

4. The method of claim 1, wherein, The time constant is determined in the following manner: acquiring an application scenario in which a power grid is located, and determining the time constant according to parameters of the first reactive power compensation device and the application scenario in combination with a system identification principle; or determining the time constant according to simulation software, input data of the reactive power compensation device and output data of the reactive power compensation device.

5. A synergic control device, characterized by, The device comprises: an acquisition module configured to acquire a target signal; a constant acquisition module configured to acquire a time constant of a reactive power compensation device, the time constant of the reactive power compensation device comprising a time constant of a first reactive power compensation device or a time constant of a second reactive power compensation device; The allocation module is configured to allocate the reactive power corresponding to the target signal according to the time constant and a second-order filter coordination strategy to obtain a first reactive signal corresponding to the first reactive power compensation device and a second reactive signal corresponding to the second reactive power compensation device; the second-order filter coordination strategy comprises a second-order filter transfer function; the second-order filter transfer function is a function constructed according to a time constant and a differential operator; The allocation module is further configured to obtain the first reactive signal corresponding to the first reactive power compensation device and the second reactive signal corresponding to the second reactive power compensation device according to the time constant of the first reactive power compensation device and the second-order filter transfer function. The allocation module comprises: The integral construction module is configured to construct a time-domain high-frequency reactive integral according to the first reactive signal, the time constant of the first reactive power compensation device and the differential operator; The transfer function construction module is configured to construct the second-order filter transfer function according to the time-domain high-frequency reactive integral.

6. The apparatus of claim 5, wherein, The device comprises: The first calculation module is configured to obtain a first grid-side reactive impact value according to the target signal, the first reactive signal and the second reactive signal; The first adjustment module is configured to adjust the time constant if the first grid-side reactive impact value is greater than a first target value.

7. The apparatus of claim 6, wherein, The device comprises: The second calculation module is configured to obtain a bus voltage fluctuation value according to the first grid-side reactive impact value, a second grid-side reactive impact value, a grid-side reactance value and a line voltage amplitude of a bus voltage if the first grid-side reactive impact value is less than or equal to the first target value; the second grid-side reactive impact value is a grid-side reactive impact value before the allocation of the reactive power corresponding to the target signal. The second adjustment module is configured to adjust the time constant if the fluctuation value is greater than a second target value.

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor implements the steps of the method of any one of claims 1 to 4 when executing the computer program.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 1 to 4.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 1 to 4. The computer program is executed by the processor to implement the steps of the method of any one of claims 1 to 4.

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