A method, device, equipment and medium for determining a strategy for voltage and reactive power control

Abstract

The present invention discloses a strategy determination method, device, equipment and medium for voltage reactive power control, wherein the method comprises: determining voltage attribute information of each plant to be processed; determining a target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected; and performing voltage reactive power control on the corresponding plant to be processed based on the target control strategy. The problem of limited voltage regulation capability of the automatic voltage adjustment device in the prior art is solved, and the effect of determining the corresponding voltage reactive power control strategy according to the voltage problem in different situations is achieved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of power grid automation control, and in particular to a voltage and reactive power control strategy determination method, device, equipment and medium. Background Art

[0002] Qualified and stable voltage is also one of the key factors in maintaining the safety and stability of the power grid, and it is also an important factor in ensuring the normal operation of electrical equipment.

[0003] At present, the method of regulating the voltage in the power grid system can adopt the automatic voltage control strategy (AVC), which can automatically adjust the reactive power and transformer taps through centralized voltage reactive adjustment, so as to achieve the effect of maintaining the voltage in the power grid system at a stable output. However, the electricity demand in each region is different, and the existing automatic voltage control strategy cannot adjust the voltage according to the actual situation of each region, so that the voltage regulation measures cannot be fully utilized, which in turn limits the voltage regulation ability of the automatic voltage control strategy.

[0004] Aiming at the problem of insufficient voltage regulation capability at present, the voltage regulation method is improved. Summary of the invention

[0005] The present invention provides a voltage reactive power control strategy determination method, device, equipment and medium to achieve the effect of determining the corresponding voltage reactive power control strategy according to voltage problems in different situations.

[0006] In a first aspect, an embodiment of the present invention provides a method for determining a strategy for voltage and reactive power control, characterized by comprising:

[0007] Determine the voltage attribute information of each plant station to be treated;

[0008] Determining a target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected;

[0009] Based on the target control strategy, voltage and reactive power control is performed on the corresponding plant to be processed.

[0010] In a second aspect, an embodiment of the present invention further provides a device for determining a strategy for voltage and reactive power control, characterized in that it includes:

[0011] A voltage attribute information determination module is used to determine the voltage attribute information of each plant station to be processed;

[0012] A target control strategy determination module, used to determine a target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected;

[0013] The voltage reactive power control module is used to perform voltage reactive power control on the corresponding plant to be processed based on the target control strategy.

[0014] In a third aspect, an embodiment of the present invention further provides an electronic device, the electronic device comprising:

[0015] one or more processors;

[0016] a storage device for storing one or more programs,

[0017] When the one or more programs are executed by the one or more processors, the one or more processors implement the strategy determination method for voltage reactive power control as described in any one of the embodiments of the present invention.

[0018] In a fourth aspect, an embodiment of the present invention further provides a storage medium comprising computer executable instructions, wherein the computer executable instructions, when executed by a computer processor, are used to execute a strategy determination method for voltage reactive power control as described in any one of the embodiments of the present invention.

[0019] The technical solution of this embodiment determines the voltage attribute information of each plant to be processed, and determines at least one control strategy to be selected based on different voltage attribute information. The target control strategy corresponding to the voltage attribute is determined from at least one predetermined control strategy to be selected, so as to use different target strategies to adjust the voltage attribute information in different situations, and then perform voltage reactive power control on the corresponding plant to be processed based on the target control strategy. The problem of limited voltage regulation capability of the automatic voltage adjustment device in the prior art is solved, and the effect of determining the corresponding voltage reactive power control strategy according to the voltage problem in different situations is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required to describe the embodiments. Obviously, the drawings introduced are only drawings of a part of the embodiments to be described in the present invention, rather than all the drawings. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A flow chart of a method for determining a voltage reactive power control strategy provided by the first embodiment of the present invention;

[0022] Figure 2 A schematic flow chart of a voltage reactive power control strategy determination method provided in the second embodiment of the present invention;

[0023] Figure 3This is a schematic diagram of the structure of a voltage reactive power control strategy determination device provided in Embodiment 4 of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of an electronic device provided in Embodiment 5 of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0026] Embodiment 1

[0027] Figure 1 A flow chart of a method for determining a voltage reactive power control strategy provided in Embodiment 1 of the present invention is provided. This embodiment can be applied to situations where a voltage reactive power control strategy of an automatic voltage adjustment device is determined for different situations. The method can be executed by a voltage reactive power control strategy determination device, which can be implemented in the form of software and / or hardware. The hardware can be an electronic device, such as a mobile terminal or a PC.

[0028] like Figure 1 As shown, the method of this embodiment includes:

[0029] S110, determining voltage attribute information of each plant station to be processed.

[0030] The power grid system can transmit electricity for various regions, including residential electricity, general industrial and commercial electricity, agricultural production electricity, and large industrial electricity. Different categories have different electricity demands. The plants to be processed can be understood as those with large electricity demands, that is, industrial plants with heavy industrial loads. Voltage attribute information can include load information, voltage value information, and fluctuation frequency of the power grid.

[0031] Specifically, the electricity consumption of industrial plants is generally large industrial electricity. When the plants are shut down and started, the power demand increases sharply, which will cause the load of the power grid to rise sharply, resulting in excessive voltage fluctuations, increasing the difficulty of voltage regulation, and thus making it impossible for the plants to use electricity normally. In order to meet the normal electricity consumption of each plant, the power demand of each plant can be counted in advance, and the plants with larger power demand among the plants are taken as the plants to be processed, and the voltage attribute information of each plant to be processed is counted, including the power load information, voltage value information and fluctuation frequency information of each plant to be processed.

[0032] Optionally, the voltage attribute information includes load change rate and voltage value information. The voltage attribute information of each plant to be processed includes: obtaining load information and voltage value information within a preset time period; determining the change rate based on the load information and using it as the load change rate, and determining the current voltage value information based on the voltage attribute information.

[0033] Among them, the load can be understood as the power load, which means the sum of the electric power taken from the power system by each electrical equipment at a certain moment. The load change rate can be understood as the speed of change of the power load at a certain moment. The faster the speed of change of the power load, the faster the load change rate. It can be understood that the load change rate can be indicated by "+" that the current power load is increasing; correspondingly, by "-" that the current power load is decreasing. According to the positive or negative value of the load change rate, it can be determined whether the current power load is rising or falling. The voltage value information can be understood as the voltage value required by the electrical equipment during operation. The preset duration can be understood as the pre-set duration, for example, the preset duration can be 1 hour. The current voltage value can be understood as the voltage value information measured within the preset duration.

[0034] Specifically, by obtaining the load information and voltage value information of each plant to be processed within a preset time period, the load change rate can be determined according to the changing speed of the load information within the preset time. At the same time, within the preset time period, the voltage information of each plant to be processed is continuously collected and the current voltage value information is obtained.

[0035] For example, when each plant to be processed starts working in the morning or stops production at night, the power demand will change greatly, and the load change rate of each plant to be processed will also change greatly. Assuming that the preset time is 1 hour, the load information and voltage value information between 7:00-8:00 in the morning and 22:00-23:00 in the evening can be obtained. At the same time, the voltage value information in these two time periods is continuously detected to determine the current voltage value information.

[0036] Optionally, the voltage attribute information includes fluctuation frequency, and determining the voltage attribute information of each plant to be processed includes: determining the fluctuation frequency according to a fluctuation curve of the fluctuation information within a preset time period.

[0037] Among them, during the power consumption process of each plant to be processed, the power load is not fixed, but changes according to the changes in the power demand of each plant to be processed. The fluctuation frequency can be understood as the number of fluctuations caused by the changes in the power load of each plant to be processed, especially the number of fluctuations with large changes in the power load, that is, the fluctuation frequency can be determined according to the number of sharp increases or decreases in the power load. The fluctuation curve can be understood as a curve determined according to the change in power load. The fluctuation curve includes power load information at different times within a preset time, and the fluctuation frequency of the power load can also be determined.

[0038] Specifically, in order to be able to perform voltage and reactive power control on each plant to be processed in a timely manner, the power load information of each plant to be processed can be collected. At the same time, considering that the power demand of each plant to be processed in different time periods is quite different, the fluctuation information of the power load of each plant to be processed can be determined based on the power load information of each plant to be processed, and then the fluctuation curve of the power load of each plant to be processed can be determined through the fluctuation information, wherein the fluctuation curve may include multiple peaks or troughs. The fluctuation frequency of the power load can be determined based on the peaks and troughs in the fluctuation curve of the fluctuation information within a preset time length. For example, when the fluctuation curve contains two peaks and two troughs, the fluctuation frequency can be determined to be twice.

[0039] S120: Determine a target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected.

[0040] Among them, the reasons why the voltage of each plant to be processed cannot operate normally are not exactly the same. For different situations, different corresponding control strategies can be determined. The control strategy to be selected can be understood as the control strategy formulated for different voltage abnormalities. The target control strategy can be understood as the control strategy corresponding to the voltage attribute of the current voltage abnormality determined from the control strategies to be selected when a voltage abnormality occurs.

[0041] Specifically, according to the different voltage attribute abnormalities occurring in each plant to be treated, a target control strategy corresponding to the voltage attribute of the plant to be treated is determined from at least one pre-set control strategy to be selected, and the voltage attributes of each plant to be treated are adjusted according to the target control strategy.

[0042] S130. Perform voltage and reactive power control on the corresponding plant to be processed based on the target control strategy.

[0043] Among them, voltage reactive power control can be understood as a capacitor control system, which automatically adjusts the reactive power and the tap of the transformer through a centralized voltage reactive power adjustment device, and adjusts the voltage in combination with load information.

[0044] Specifically, the voltage anomalies of each plant to be processed are different. For example, it may be due to the fact that the power load of some plants to be processed rises or falls too fast; it may also be due to the high frequency of fluctuations in the load curves of some plants to be processed; it may also be due to failures of related control equipment of some plants to be processed, etc. For different voltage anomalies, different target control strategies can be selected to perform voltage reactive power control on the corresponding plants to be processed.

[0045] Optionally, when a transformer failure corresponding to each plant to be processed is detected, an early warning message is sent to a terminal device corresponding to the transformer.

[0046] Among them, the transformer can be understood as the main transformer on-load voltage regulating device. The terminal device can be understood as the equipment used to monitor whether each device in the power grid system is operating normally. The early warning information can be understood as sending warning information to the staff in a timely manner when a transformer failure in the power grid system is detected. The sending method can be based on a pre-set information notification method and sent to the designated staff, such as through email, SMS or telephone notification. At the same time, if there are multiple transformers in the power grid system, different priorities can be set for each transformer, and according to the different priorities, the early warning information corresponding to the priority can be set.

[0047] Specifically, the priority of each transformer can be set according to the degree of influence of each transformer on the normal operation of the power grid system. The priority setting can be set according to the influence of the transformer on the power grid system. The transformer with a greater influence is set to the first priority; the transformer with a general influence is set to the second priority; the transformer with a smaller influence is set to the third priority. Correspondingly, the warning information corresponding to the first priority can be "the transformer is faulty and there is no available reactive power compensation device for the busbar, and the processing time is adjusted to half a month"; the warning information corresponding to the first priority can be "the transformer is faulty, but there is still an available compensation device or no available compensation device, but the transformer is normally available, and the processing time is adjusted to one month"; the warning information corresponding to the first priority can be "the transformer is faulty, but it is still normally available, and the processing time is six months". When the transformer fault corresponding to each plant to be processed is detected, the warning information is sent to the terminal device corresponding to each transformer according to the pre-set warning information corresponding to each priority.

[0048] The technical solution of this embodiment determines the voltage attribute information of each plant to be processed, and determines at least one control strategy to be selected based on different voltage attribute information. The target control strategy corresponding to the voltage attribute is determined from at least one predetermined control strategy to be selected, so as to use different target strategies to adjust the voltage attribute information in different situations, and then perform voltage reactive power control on the corresponding plant to be processed based on the target control strategy. The problem of limited voltage regulation capability of the automatic voltage adjustment device in the prior art is solved, and the effect of determining the corresponding voltage reactive power control strategy according to the voltage problem in different situations is achieved.

[0049] Embodiment 2

[0050] As an alternative embodiment of the above embodiment, Figure 2A flow chart of a voltage reactive power control strategy determination method provided in the second embodiment of the present invention, optionally, a target control strategy corresponding to the voltage attribute determined from at least one predetermined control strategy to be selected is refined.

[0051] like Figure 2 As shown, the specific methods include:

[0052] S210, determining the voltage attribute information of each plant station to be processed.

[0053] S220, determine the target control strategy according to the voltage attribute information. If the target control strategy is determined according to the load change rate in the voltage attribute information, execute S230; or, determine the target control strategy according to the fluctuation frequency and preset function in the voltage attribute information, execute S240.

[0054] S230: If the load change rate in the voltage attribute information is greater than or equal to a preset load threshold, and the voltage value is lower than a preset voltage threshold, determining that the target control strategy is a main variable capacitor combination strategy.

[0055] Among them, the preset load threshold can be understood as the value of the preset load change rate. The preset voltage threshold can be understood as the voltage value that can meet the normal operation of the electrical equipment. In order to ensure that the appropriate voltage is provided for the electrical equipment of each plant to be processed, the reactive power compensation device in the power grid system can also include multiple capacitors to improve the voltage quality in the power grid system and increase the transmission capacity of the transmission line. It should be noted that although there are multiple capacitors in the power grid system, not every capacitor is continuously in working condition. The main transformer capacitor combination strategy can be understood as realizing voltage reactive power control by increasing the number of capacitors actually working in the power grid system.

[0056] Specifically, when it is detected that the load information in each plant to be processed changes too fast, for example, when the load information is in a rapid rise stage and the voltage is in a rapid drop stage. When the voltage allocated to each plant to be processed by the power grid system is too low, the voltage value may even be lower than the preset voltage threshold, which will cause the electrical equipment to fail to operate normally. Therefore, it is necessary to adjust the gear of the transformer and use the main transformer capacitor combination strategy as the target control strategy.

[0057] Optionally, if the load change rate in the voltage attribute information is greater than or equal to a preset load threshold, and the voltage value is lower than a preset voltage threshold, the target control strategy is determined to be a main transformer capacitor combination strategy, including: when it is detected that the load change rate is greater than or equal to the preset load threshold, and the voltage value is lower than the preset voltage threshold, the transformer is upgraded; if after the upshift processing, the current voltage value in the voltage attribute information still does not reach the preset voltage threshold within a preset time length, then the target control strategy is determined to be a main transformer capacitor combination strategy.

[0058] Specifically, in order to meet the normal operation of the electrical equipment, the voltage value usually needs to be maintained between 10.0kv-10.7kv, so the preset voltage threshold can be determined according to the voltage value of the normal operation of the electrical equipment. It is understandable that when the load information in the power grid increases, the voltage value will decrease. Therefore, when it is detected that the load change rate is greater than or equal to the preset load threshold, and the voltage value is lower than the preset voltage threshold, the transformer needs to be upgraded, that is, the gear of the transformer is increased to increase the voltage value to meet the power demand of the electrical equipment.

[0059] It should be noted that although the effect of increasing the voltage value can be achieved by upgrading the transformer, when the load information exceeds a certain limit, it is very dangerous to continue to upgrade the transformer under overload conditions. Therefore, the transformer cannot be continuously upgraded. Based on this, it is necessary to set a limit on the number of transformer upgrades. If the transformer's upshift operation reaches the upper limit of the number of upshifts within a certain period of time, the transformer needs to be locked and the voltage value in the power grid system will no longer be increased to protect the transformer from failure. Among them, the transformer lockout process can be understood as the operation of the relay in the automatic transformer and cutting off the voltage regulation circuit when it is detected that the number of transformer upshifts reaches the upper limit.

[0060] Furthermore, if the number of upshifting processes of the transformer has reached the upper limit within the preset time, but the current voltage value in the voltage attribute information has not yet reached the preset voltage threshold, the voltage value in the power grid system can be increased by increasing the number of capacitors actually working in the power grid system, that is, the main transformer capacitor combination strategy is used as the target control strategy.

[0061] S240: Determine, based on the fluctuation frequency in the voltage attribute information and a preset function, that the target control strategy is an action limit adjustment strategy.

[0062] The preset function can be understood as a function that determines the number of action limit adjustment based on the number of fluctuations. The action limit adjustment strategy can be understood as a strategy for adjusting the switch state of the automatic voltage control according to the fluctuation frequency in the voltage attribute information.

[0063] Specifically, since the power demand of each plant to be processed is relatively large, compared with general plants, the load information has more fluctuation frequency and more peaks and valleys. If the adjustment times of the existing automatic voltage control device does not meet the fluctuation frequency of each plant to be processed, the voltage adjustment of the automatic voltage control device will be limited, which will lead to the failure to timely adjust the voltage value in the power grid system. Therefore, in order to meet the power demand of each plant to be processed, the adjustment times of the automatic voltage control device can be appropriately adjusted, and the target control strategy is determined to be the action limit adjustment strategy according to the fluctuation frequency in the voltage attribute information and the preset function, wherein the adjustment times of the automatic voltage control device can be determined according to the preset function.

[0064] Optionally, the target control strategy is determined according to the fluctuation frequency and preset function in the voltage attribute information, including: determining the intermediate value according to the peak frequency and the trough frequency in the fluctuation frequency; determining the transition value according to the product of the intermediate value and the first preset value; and determining that the target control strategy is an action limit adjustment strategy according to the transition value and the second preset value.

[0065] The peak frequency can be understood as the number of times the peak appears in the fluctuation curve, and correspondingly, the trough frequency can be understood as the number of times the trough appears in the fluctuation curve. The intermediate value can be understood as a value determined according to the sum of the peak frequency and the trough frequency. The first preset value and the second preset value can be understood as fixed values ​​set in the preset function. The transition value can be understood as a value obtained by multiplying the intermediate value and the first preset value.

[0066] Specifically, in order to meet the voltage fluctuation needs of each plant to be processed, the adjustment times of the automatic voltage adjustment device can be determined according to the peak times, trough times and preset functions in the fluctuation frequency in the voltage attribute, and the adjustment time can also be limited. For example, the adjustment time of the automatic voltage adjustment device can be set to 00:00-07:00, 07:00-23:00 or 23:00-24:00, etc. The adjustment times of the automatic voltage adjustment device are obtained as the action limit adjustment times, and based on this, the target control strategy is determined to be the action limit adjustment strategy.

[0067] Among them, the preset function can be set to K≈2*(m+n)±1, where K represents the adjustment times of the automatic control device; n represents the number of peaks; m represents the number of troughs; 2 represents the first preset value; and 1 represents the second preset value.

[0068] S250. Perform voltage and reactive power control on the corresponding plant to be processed based on the target control strategy.

[0069] The technical solution of this embodiment is that if the load change rate in the voltage attribute information is greater than or equal to the preset load threshold, and the voltage value is lower than the preset voltage threshold, then the target control strategy is determined to be the main transformer capacitor combination strategy, which is used to adjust the voltage in the power grid system based on the main transformer capacitor combination strategy to ensure the normal use of electrical equipment. According to the fluctuation frequency and the preset function in the voltage attribute information, the target control strategy is determined to be the action limit adjustment strategy. By adjusting the action limit and the preset function of the automatic voltage control device, the actual number of adjustments required can be determined according to the actual power demand to meet the adjustment needs of each plant to be processed. The problem of limited voltage adjustment ability of the automatic voltage adjustment device in the prior art is solved, and the voltage reactive power control strategy corresponding to the voltage problem is determined according to the voltage problem in different situations, thereby meeting the power demand of each plant to be processed.

[0070] Embodiment 3

[0071] In a specific example, in order to solve the voltage abnormality of each plant to be treated, voltage reactive power control can be performed on each plant to be treated based on different target control strategies according to different abnormal causes.

[0072] When the plants to be processed are started or shut down, the demand for electricity will suddenly increase. At this time, the load information will rise too fast, and the voltage will drop too fast, which will cause the power equipment of the plants to be processed to be unable to be used normally. In this case, the main transformer capacitor combination strategy can be used as the target control strategy. The load threshold and voltage threshold are set in advance in the voltage attribute information. When it is detected that the load change rate of the voltage attribute information is greater than or equal to the preset load threshold, and the voltage value is lower than the preset voltage threshold, the transformer in the power grid system is upgraded.

[0073] It should be noted that the upshifting process of the transformer is not unlimited, and the upshifting process of the transformer needs to be limited in number and time. If the number of operations of the upshifting process of the transformer has reached the upper limit within a certain period of time, but the voltage value is still low at this time, the transformer is locked, that is, even if the load change rate of the voltage attribute information is detected to be greater than or equal to the preset load threshold, and the voltage value is lower than the preset voltage threshold, the transformer is no longer upshifted. After the transformer is locked, the main transformer capacitor combination strategy is triggered to automatically open the capacitor switch in the power grid system to increase the number of capacitors actually working in the power grid system, thereby increasing the voltage value in the power grid system, so that the automatic voltage control device can give full play to the adjustment function.

[0074] Alternatively, when the load curve in the plant to be processed fluctuates greatly, the peak frequency and the trough frequency are large, the adjustment action of the automatic voltage adjustment device is not timely, and the number of actions is limited, the action limit adjustment strategy can be determined as the target control strategy according to the fluctuation frequency and the preset function in the voltage attribute information. Exemplarily, the preset function is determined according to the peak frequency and the trough frequency and the first preset value and the second preset value, for example, it can be set to K≈2*(m+n)±1, where K represents the number of adjustments of the automatic control device; n represents the number of peaks; m represents the number of troughs; 2 represents the first preset value; and 1 represents the second preset value.

[0075] Taking a certain plant to be treated as an example, the adjustment time of the automatic voltage control device can be pre-set, and the corresponding adjustment times can be set at the same time. For example, in the time period of 00:00-07:00, the adjustment times of the automatic voltage control device are set to 2, and the adjustment times of the capacitors are set to 3; in the time period of 07:00-23:00, the adjustment times of the automatic voltage control device are set to 3, and the adjustment times of the capacitors are set to 4; in the time period of 23:00-24:00, the adjustment times of the automatic voltage control device are set to 1, and the adjustment times of the capacitors are set to 1. Considering the adjustment times of the capacitors and the automatic voltage control device and the load information requirements of the plant to be treated, the adjustment times are determined according to the fluctuation information in the voltage attribute information.

[0076] In addition, for general faults of reactive compensation equipment and transformers, the processing time is generally 6 months. Considering the voltage regulation capacity of the same section of busbar, the defect level of the corresponding equipment is increased to shorten the processing time. It is also possible to set the priority of each transformer according to the degree of influence of each transformer in the power grid system, with the transformer with a large degree of influence as the first priority; the transformer with a general degree of influence as the second priority; the transformer with a small degree of influence as the third priority, and determine the corresponding early warning information according to different priorities. Exemplarily, the working status of each transformer in the power grid system is monitored at all times. When a transformer with the first priority is detected to have a fault, the early warning information corresponding to the first priority is sent to the terminal device corresponding to the transformer. The early warning information may be "the transformer is faulty, but there is still an available compensation device or there is no available compensation device, but the transformer is normally available, and the processing time is adjusted to one month".

[0077] The technical solution of this embodiment determines the voltage attribute information of each plant to be processed, and determines at least one control strategy to be selected based on different voltage attribute information. The target control strategy corresponding to the voltage attribute is determined from at least one predetermined control strategy to be selected, so as to use different target strategies to adjust the voltage attribute information in different situations, and then perform voltage reactive power control on the corresponding plant to be processed based on the target control strategy. The problem of limited voltage regulation capability of the automatic voltage adjustment device in the prior art is solved, and the effect of determining the corresponding voltage reactive power control strategy according to the voltage problem in different situations is achieved.

[0078] Embodiment 4

[0079] Figure 3 A voltage reactive power control strategy determination device is provided in the fourth embodiment of the present invention. The device includes: a voltage attribute information determination module 310 , a target control strategy determination module 320 and a voltage reactive power control module 330 .

[0080] The voltage attribute information determination module 310 is used to determine the voltage attribute information of each plant to be processed;

[0081] A target control strategy determination module 320, configured to determine a target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected;

[0082] The voltage reactive power control module 330 is used to perform voltage reactive power control on the corresponding plant to be processed based on the target control strategy.

[0083] The technical solution of this embodiment determines the voltage attribute information of each plant to be processed, and determines at least one control strategy to be selected based on different voltage attribute information. The target control strategy corresponding to the voltage attribute is determined from at least one predetermined control strategy to be selected, so as to use different target strategies to adjust the voltage attribute information in different situations, and then perform voltage reactive power control on the corresponding plant to be processed based on the target control strategy. The problem of limited voltage regulation capability of the automatic voltage adjustment device in the prior art is solved, and the effect of determining the corresponding voltage reactive power control strategy according to the voltage problem in different situations is achieved.

[0084] Based on any optional technical solution in the embodiments of the present invention, optionally, the voltage attribute information determination module includes:

[0085] A load information acquisition unit, used to acquire load information and voltage attribute information within a preset time period;

[0086] Determine a change rate according to the load information and use it as the load change rate, and determine current voltage value information according to the voltage attribute information;

[0087] The voltage attribute information includes load change rate and voltage attribute information.

[0088] On the basis of any optional technical solution in the embodiments of the present invention, optionally, the voltage attribute information determination module is used to determine the fluctuation frequency according to a fluctuation curve of the fluctuation information within a preset time period, wherein the voltage attribute information includes the fluctuation frequency.

[0089] Based on any optional technical solution in the embodiments of the present invention, optionally, the target control strategy determination module includes:

[0090] The target control strategy determines a first unit, which is used to determine that the target control strategy is a main variable capacitor combination strategy if the load change rate in the voltage attribute information is greater than or equal to a preset load threshold and the voltage value is lower than a preset voltage threshold;

[0091] The target control strategy determines the second unit, which is used to determine that the target control strategy is an action limit adjustment strategy according to the fluctuation frequency in the voltage attribute information and a preset function.

[0092] Based on any optional technical solution in the embodiments of the present invention, optionally, the target control strategy determines the first unit, including:

[0093] The transformer upshift subunit is used to perform upshift processing on the transformer when it is detected that the load change rate is greater than or equal to a preset load threshold and the voltage value is lower than a preset voltage threshold;

[0094] The main transformer capacitor combination strategy determination subunit is used to determine that the target control strategy is the main transformer capacitor combination strategy if the current voltage value in the voltage attribute information still does not reach the preset voltage threshold within the preset time after the upshift process.

[0095] Based on any optional technical solution in the embodiments of the present invention, optionally, the target control strategy determines the second unit, including:

[0096] The intermediate value determination subunit is used to determine the intermediate value according to the peak frequency and the trough frequency in the fluctuation frequency;

[0097] A transition value determination subunit, used to determine the transition value according to the product of the intermediate value and the first preset value;

[0098] The target control strategy determination subunit is used to determine the target control strategy according to the transition value and the second preset value.

[0099] On the basis of any optional technical solution in the embodiments of the present invention, optionally, the voltage reactive power control strategy determination device further includes:

[0100] The early warning information sending module is used to send early warning information to the terminal equipment corresponding to the transformer when a transformer failure corresponding to each plant station to be processed is detected.

[0101] The voltage reactive power control strategy determination device provided in the embodiment of the present invention can execute the voltage reactive power control strategy determination method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0102] It is worth noting that the various units and modules included in the above-mentioned device are only divided according to functional logic, but are not limited to the above-mentioned division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other, and are not used to limit the protection scope of the embodiments of the present invention.

[0103] Embodiment 5

[0104] Figure 4 This is a schematic diagram of the structure of an electronic device provided in Embodiment 5 of the present invention. Figure 4 A block diagram of an exemplary electronic device 40 suitable for implementing exemplary embodiments of the present invention is shown. Figure 4 The electronic device 40 shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0105] like Figure 4 As shown, the electronic device 40 is in the form of a general computing device. The components of the electronic device 40 may include but are not limited to: one or more processors or processing units 401, a system memory 402, and a bus 403 connecting different system components (including the system memory 402 and the processing unit 401).

[0106] Bus 403 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor or a local bus using any of a variety of bus structures. For example, these architectures include but are not limited to Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MAC) bus, Enhanced ISA bus, Video Electronics Standards Association (VESA) local bus and Peripheral Component Interconnect (PCI) bus.

[0107] The electronic device 40 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by the electronic device 40, including volatile and non-volatile media, removable and non-removable media.

[0108] System memory 402 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 404 and / or cache memory 405. Electronic device 40 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 406 may be used to read and write non-removable, non-volatile magnetic media ( Figure 4 not shown, usually called a "hard drive"). Although Figure 4 Not shown in the figure, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, a DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 403 via one or more data medium interfaces. Memory 402 may include at least one program product having a set (e.g., at least one) of program modules that are configured to perform the functions of various embodiments of the present invention.

[0109] A program / utility 408 having a set (at least one) of program modules 407 may be stored, for example, in memory 402, such program modules 407 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment. Program modules 407 generally perform the functions and / or methods of the embodiments described herein.

[0110] The electronic device 40 may also communicate with one or more external devices 409 (e.g., keyboards, pointing devices, displays 410, etc.), may communicate with one or more devices that enable a user to interact with the electronic device 40, and / or may communicate with any device that enables the electronic device 40 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). Such communication may be performed via an input / output (I / O) interface 411. Furthermore, the electronic device 40 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 412. As shown, the network adapter 412 communicates with other modules of the electronic device 40 via the bus 403. It should be understood that although Figure 4 Not shown, other hardware and / or software modules may be used in conjunction with the electronic device 40, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0111] The processing unit 401 executes various functional applications and data processing by running the programs stored in the system memory 402, such as implementing the strategy determination method for voltage reactive power control provided in the embodiment of the present invention.

[0112] Embodiment 6

[0113] Embodiment 6 of the present invention further provides a storage medium including computer executable instructions, wherein the computer executable instructions are used to execute a voltage reactive power control strategy determination method when executed by a computer processor, the method comprising:

[0114] Determine the voltage attribute information of each plant station to be treated;

[0115] Determining a target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected;

[0116] Based on the target control strategy, voltage and reactive power control is performed on the corresponding plant to be processed.

[0117] The computer storage medium of the embodiment of the present invention can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0118] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, which carry computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0119] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0120] Computer program code for performing the operation of embodiments of the present invention may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" or similar programming languages. The program code may be executed entirely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0121] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for determining a voltage reactive power control strategy, characterized in that: include: Determine the voltage attribute information of each plant to be processed; wherein the voltage attribute information includes load change rate, voltage value information and fluctuation frequency information; The step of determining the voltage attribute information of each long station to be processed includes: obtaining load information and voltage value information within a preset time period, determining a change rate according to the load information and using the change rate as the load change rate, and determining a fluctuation frequency according to a fluctuation curve of fluctuation information within the preset time period; Determining a target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected; Based on the target control strategy, voltage and reactive power control is performed on the corresponding plant to be treated; Wherein, determining the target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected includes: When it is detected that the load change rate is greater than or equal to the preset load threshold and the voltage value is lower than the preset voltage threshold, the transformer is upgraded; if after the upgrade, the current voltage value in the voltage attribute information still does not reach the preset voltage threshold within the preset time, the target control strategy is determined to be the main transformer capacitor combination strategy; or According to the fluctuation frequency and the preset function in the voltage attribute information, determining the target control strategy as the action limit adjustment strategy; The preset function is K≈2*(m+n)±1; Wherein, K represents the adjustment times of the automatic control device; n represents the number of peaks; m represents the number of troughs, and the obtained adjustment times of the automatic voltage adjustment device are used as the action limit adjustment times.

2. The method according to claim 1, characterized in that Also includes: When a transformer failure corresponding to each plant to be processed is detected, an early warning message is sent to the terminal device corresponding to the transformer.

3. A voltage reactive power control strategy determination device, used to execute any one of the methods in claims 1-2, characterized in that: include: A voltage attribute information determination module is used to determine the voltage attribute information of each plant station to be processed; A target control strategy determination module, used to determine a target control strategy corresponding to the voltage attribute from at least one predetermined control strategy to be selected; A voltage reactive power control module, used for performing voltage reactive power control on the corresponding plant to be processed based on the target control strategy; Wherein, the target control strategy determination module includes: The target control strategy determines the first unit, which is used to perform a gear-up process on the transformer when it is detected that the load change rate is greater than or equal to a preset load threshold and the voltage value is lower than a preset voltage threshold; if after the gear-up process, the current voltage value in the voltage attribute information still does not reach the preset voltage threshold within a preset time, then determine that the target control strategy is a main transformer capacitor combination strategy; The target control strategy determines the second unit, which is used to determine the target control strategy as an action limit adjustment strategy according to the fluctuation frequency in the voltage attribute information and a preset function; The preset function is K≈2*(m+n)±1; Wherein, K represents the adjustment times of the automatic control device; n represents the number of peaks; m represents the number of troughs, and the obtained adjustment times of the automatic voltage adjustment device are used as the action limit adjustment times.

4. An electronic device, characterized in that: The electronic device comprises: one or more processors; a storage device for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors implement the voltage reactive power control strategy determination method as described in any one of claims 1-2.

5. A storage medium containing computer executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, they are used to execute the voltage reactive power control strategy determination method as described in any one of claims 1-2.

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