10kV line voltage regulation control method, device and system and electronic equipment

Abstract

The invention discloses a 10kV line voltage regulation control method, device and system, and electronic equipment and system. The method comprises the following steps: detecting and collecting state information of a 10kV line; preprocessing the state information of the 10kV line, and judging the eligibility of the voltage by adopting a nine-domain graph algorithm; and carrying out voltage regulation control according to the pre-processing state information and the qualification of the voltage. The beneficial effects of the invention are that the overall control method achieves the real-time monitoring of the voltage and current of the line and the state of the circuit breaker through the step of detecting and collecting the state information of the 10kV line, and improves the voltage regulation control responsiveness and accuracy; by preprocessing the state information of the 10kV line and judging the qualification of the voltage by adopting a nine-domain graph algorithm, the accurate evaluation and classification of the line voltage state are realized, the voltage regulation strategy is optimized, and the electric energy quality is also improved; the step of voltage regulation control is carried out according to the preprocessing state information and the qualification of the voltage, so that the power supply reliability is improved, and the line loss is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution network technology, and in particular to a 10kV line voltage regulation control method, device and system, and electronic equipment. Background Art

[0002] With the development of the power system, 10kV lines, as an important part of the distribution network, have experienced a transformation from manual to automatic voltage regulation control technology. The early voltage regulation methods had many shortcomings, such as low efficiency, slow response, and inability to monitor voltage changes in real time. With the advancement of technology, automatic voltage regulators came into being. They can automatically adjust the gear position of the on-load tap changer according to the line voltage conditions, realize the change of the transformer ratio, and thus ensure that the output voltage is stable within a certain range. This technology is particularly suitable for lines with long power supply distances, large power supply loads, and large voltage fluctuations, which significantly improves the power quality and power supply reliability.

[0003] Although the automatic voltage regulator technology has made certain progress, the existing technology still has some shortcomings. First, due to the low construction standards and small conductor cross-section of some 10kV lines, low voltage problems are very likely to occur when the load is concentrated. Secondly, the 10kV line has a long power supply radius, resulting in low voltage and power factor at the user end that do not meet the standards, and large line losses. In addition, the traditional 10kV line voltage regulation control device has a complex structure and layout, and the installation and disassembly and addition and deletion of functional boards are cumbersome. The human-computer interaction interface is not intuitive enough, and the LCD display is easily damaged by high temperature, which increases the workload of engineering maintenance personnel. These shortcomings limit the efficiency and reliability of the voltage regulation control device, and also affect the stability of the power system and the user's power experience.

[0004] In response to these shortcomings, we have invented and proposed a 10kV line voltage regulation control method, device and system, electronic equipment and system. By improving the voltage regulation control technology, optimizing the structural layout, and enhancing the intuitiveness and reliability of the human-computer interaction interface, it is expected to significantly improve the voltage regulation effect and power quality of the 10kV line, reduce line losses, improve power supply reliability, and meet the growing demand of the majority of power customers for power quality. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0007] Therefore, the technical problem solved by the present invention is: the insufficiency of voltage stability and voltage regulation control strategy in the power system. By real-time detection and collection of voltage, current and circuit breaker status information of 10kV lines, these data are preprocessed to identify the direction of power flow and judge whether the voltage is qualified; the combination of voltage and power factor is divided into nine areas by using the nine-domain graph algorithm, each area corresponds to a specific control action, so as to achieve accurate judgment of voltage qualification; and reasonable and effective voltage regulation control of 10kV lines is achieved by combining the direction of power flow and the judgment of the nine-domain graph algorithm.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] In a first aspect, an embodiment of the present invention provides the following technical solutions: a 10kV line voltage regulation control method, which includes detecting and collecting status information of the 10kV line; preprocessing the status information of the 10kV line, and using a nine-domain graph algorithm to determine the eligibility of the voltage; and performing voltage regulation control based on the preprocessed status information and the eligibility of the voltage.

[0010] As a preferred solution of the 10kV line voltage regulation control method, device and system, and electronic equipment of the present invention, the state information of the 10kV line is detected and collected, including voltage state, current state and circuit breaker state information.

[0011] As a preferred solution of the 10kV line voltage regulation control method, device and system, and electronic equipment of the present invention, the state information of the 10kV line is preprocessed, including the system identifying the direction of the power flow by monitoring the voltage and current phase in the line.

[0012] As a preferred solution of the 10kV line voltage regulation control method, device and system, and electronic equipment described in the present invention, a nine-domain diagram algorithm is used to judge the voltage eligibility, including a 10kV line voltage regulation control method, device and system, and electronic equipment. The nine-domain diagram algorithm divides the combination of voltage and power factor into nine different areas, each area corresponds to a specific control action, and determines the current working area based on the collected voltage and power factor of the 10kV line. The current working area will guide the system to take corresponding voltage regulation measures.

[0013] As a preferred solution of the 10kV line voltage regulation control method, device and system, and electronic equipment of the present invention, wherein: voltage regulation control is performed according to the pre-processing state information and the qualification of the voltage, including using a bidirectional voltage regulation controller to regulate the voltage based on the judgment of the flow direction and the nine-domain diagram algorithm; when the voltage value output by the nine-domain diagram algorithm is higher than the qualified range, the system will cut off the capacitor to reduce the voltage; when the voltage value output by the nine-domain diagram algorithm is lower than the qualified range, the system will put in capacitors to increase the voltage; when the voltage value output by the nine-domain diagram algorithm is within the qualified range, the system does not perform any voltage regulation action.

[0014] In the second aspect, an embodiment of the present invention provides a 10kV line voltage regulation control device, which includes a voltage regulating device, including a group of bidirectional voltage regulating controllers, a group of voltage regulators electrically connected to the bidirectional voltage regulating controllers, two groups of lightning arresters, two groups of power supply voltage transformers PT1 and PT2, two groups of vacuum circuit breakers QF1 and QF3 and a group of bypass circuit breaker QF2; the two groups of vacuum circuit breakers QF1 and QF3 are provided with isolating switches QS1 and QS3; a group of bypass circuit breaker QF2 is provided with an isolating switch QS2.

[0015] As a preferred solution of the 10kV line voltage regulating control device of the present invention, the voltage regulating device is provided with an input end and an output end; two groups of power supply voltage transformers PT1 and PT2 are respectively installed at both ends of the input end and the output end; two groups of vacuum circuit breakers QF1 and QF3 are respectively installed at both ends of the input end and the output end; and both ends of the bypass circuit breaker QF2 are respectively installed on the outgoing line side of the disconnector QS1 and the incoming line side of the disconnector QS3.

[0016] In the third aspect, an embodiment of the present invention provides a 10kV line voltage regulation control system, which includes a data acquisition and storage module, a flow direction identification module, a voltage qualification judgment module, and a voltage regulation control module; the data acquisition and storage module is used to collect the voltage, current, circuit breaker status and flow direction status information of the 10kV line in real time, and pre-process the collected real-time data, and store it together with the historical data in the controller internal storage unit; the flow direction identification module identifies the direction of the power flow by monitoring the voltage and current phase in the line; the voltage qualification judgment module uses the 10kV line voltage regulation control method, device and system, and electronic equipment nine-domain diagram algorithm to judge whether the voltage is within a qualified range according to the collected voltage and power factor data; the voltage regulation control module formulates a voltage regulation strategy according to the pre-processed status information, voltage qualification and flow direction.

[0017] In a fourth aspect, an embodiment of the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, wherein: when the computer program instructions are executed by the processor, the steps of the 10kV line voltage regulation control method of the first aspect of the present invention are implemented.

[0018] In a fifth aspect, an embodiment of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein: when the computer program instructions are executed by a processor, the steps of the 10kV line voltage regulation control method of the first aspect of the present invention are implemented.

[0019] Beneficial effects of the present invention: The overall control method realizes real-time monitoring of line voltage, current and circuit breaker status by detecting and collecting the status information of the 10kV line, and improves the responsiveness and accuracy of voltage regulation control; by pre-processing the status information of the 10kV line and using the nine-domain graph algorithm to judge the qualification of the voltage, the accurate evaluation and classification of the line voltage status is realized, which not only optimizes the voltage regulation strategy but also improves the power quality; by performing the voltage regulation control step according to the pre-processed status information and the qualification of the voltage, the intelligent and automated voltage regulation operation is realized, which not only improves the power supply reliability but also reduces the line loss. The overall control device realizes the modular design of the voltage regulation control device through the design of the functional board card, which improves the equipment assembly efficiency while reducing the maintenance difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is the overall flow chart of the 10kV line voltage regulation control method;

[0022] Figure 2 It is the control principle diagram of the nine-domain diagram algorithm of the 10kV line voltage regulation control method;

[0023] Figure 3 This is the overall structure circuit schematic diagram of the 10kV line voltage regulation control device;

[0024] Figure 4 This is a partial structural diagram of a 10kV line voltage regulation control device;

[0025] Figure 5 This is the overall flow chart of the 10kV line voltage regulation control system. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] Reference Figure 1 , as an embodiment of the present invention, provides a 10kV line voltage regulation control method, comprising:

[0031] S1: Detect and collect status information of 10kV line.

[0032] Specifically, a 10kV line refers to a distribution line with a rated voltage of 10 kilovolts. As a key link between substations and power users, the 10kV line is mainly responsible for transmitting electricity from substations to the user end to meet the needs of different users.

[0033] Specifically, the status information of a 10kV line refers to the data of the line operation status, including voltage, current, power factor, circuit breaker status, etc. Status detection can fully grasp the actual operation status of the equipment and provide optimization suggestions for the operation of the power grid, such as voltage and reactive power control, which can reduce line losses and improve power supply reliability and voltage quality. Comprehensive and accurate status information is the basis for realizing intelligent voltage regulation control.

[0034] S2: Pre-process the status information of the 10kV line and use the nine-domain graph algorithm to determine the voltage eligibility.

[0035] Specifically, preprocessing the state information of the 10kV line refers to processing the collected original state information, such as filtering, data conversion, etc., to improve data quality and reliability and provide accurate input for subsequent algorithm analysis.

[0036] Specifically, the power flow direction refers to the direction of power flow in the distribution line. Forward power flow means that the current flows from the input end to the output end, while reverse power flow is the opposite. Power flow direction identification is crucial for determining the cause of voltage fluctuations and formulating reasonable voltage regulation strategies.

[0037] Specifically, the power flow direction refers to the specific path of power flow from one node to another. Under normal operating conditions, the power flow distribution and direction remain stable. Once a fault occurs, the power flow direction will change. By monitoring the power flow direction, power system operation and dispatching personnel can closely monitor and adjust the power flow distribution to ensure the safety of equipment and components, minimize the loss of the entire network, achieve the purpose of economic operation, and meet the requirements of static stability and transient stability.

[0038] Specifically, the nine-domain graph algorithm refers to a control strategy based on a combination of voltage and power factor. The voltage-power factor plane is divided into nine regions, each corresponding to a specific voltage regulation action, and the line status information is matched to the same domain to determine the voltage eligibility. The algorithm can effectively cope with voltage fluctuations under different load characteristics and achieve refined voltage regulation control.

[0039] Specifically, the nine-domain graph algorithm is used for the comprehensive control of voltage and reactive power in the power system. Its core is to ensure that the voltage level is qualified and the basic balance of reactive power is well guaranteed, and the voltage and reactive power are controlled through dynamic adjustment. The algorithm realizes the optimal operation of the power grid by comprehensively considering multiple factors such as voltage, reactive power, time, and load rate, reduces the number of adjustments, and avoids equipment failures caused by excessively frequent adjustments.

[0040] Specifically, the nine-domain diagram algorithm is based on the reactive voltage control strategy of the substation of the three-dimensional nine-domain diagram, which combines the advantages of dynamic reactive optimization and real-time regulation, avoids the frequent adjustment of reactive compensation equipment and main transformer tap changers, reduces the number of adjustments and equipment losses, and adopts the capacitor group cyclic switching method. To a certain extent, it not only reduces the average operating temperature of the capacitor group, but also reduces the number of operations of the switching switch, thereby improving the economy of the substation operation.

[0041] Specifically, the nine-domain diagram algorithm takes into account the randomness of real-time system voltage, reactive power and reactive load changes, can adapt to changes in grid load, adjust the upper and lower limits of voltage and reactive power according to different seasons, peaks and valleys, and time periods, and improves the control adaptability to voltage fluctuations. It supports grid automation and intelligence, and realizes the automation of grid switching control through algorithms, reduces human operational errors, and improves control accuracy and efficiency.

[0042] S3: Perform voltage regulation control according to the pre-processing status information and the eligibility of the voltage.

[0043] Specifically, according to the preprocessed status information and the judgment results of the nine-domain diagram algorithm, the bidirectional voltage regulator can automatically execute voltage regulation measures, such as adjusting the transformer tap position or switching on / off capacitors, to maintain the voltage within the qualified range and improve the power quality and power supply reliability.

[0044] Specifically, the bidirectional voltage regulator automatically adjusts the transformation ratio by tracking the change of the output voltage. Whether the flow direction is forward or reverse, the bidirectional voltage regulator can adapt to ensure the stability of the output voltage of the bidirectional voltage regulator. This means that the bidirectional voltage regulator can automatically adjust its tap switch gear according to the voltage determined by the nine-domain diagram algorithm to maintain the voltage within the set range. The bidirectional voltage regulator also has a wide voltage adjustment range, and the voltage regulation effect is obvious and the voltage adjustment accuracy is high. This enables the bidirectional voltage regulator to finely control the voltage and meet the user's requirements for voltage stability.

[0045] In summary, the present invention applies the nine-domain graph algorithm to the voltage regulation control of 10kV lines, and realizes the rapid judgment and precise control of the power system state through the combined division of voltage and power factor. This method not only improves the response speed and accuracy of voltage regulation control, but also reduces human intervention, operation costs and risks through intelligent control strategies.

[0046] Example 2

[0047] Reference Figures 1-2 , which is a second embodiment of the present invention, provides a 10kV line voltage regulation control method, comprising:

[0048] S1: Detect and collect status information of 10kV line.

[0049] Furthermore, the status information of the 10kV line is detected and collected, including the voltage status, current status and circuit breaker status information.

[0050] It should be noted that the voltage and current status information of the 10kV line can be detected and collected not only for flow direction identification, but also for calculating the line load rate, providing a reference for optimizing the voltage regulation strategy; the collected circuit breaker status information can be used to determine the line topology and fault status, further improving the reliability of voltage regulation control.

[0051] S2: Pre-process the status information of the 10kV line and use the nine-domain graph algorithm to determine the voltage eligibility.

[0052] Furthermore, the status information of the 10kV line is pre-processed, including the system identifying the direction of power flow by monitoring the voltage and current phase in the line.

[0053] Furthermore, a nine-domain diagram algorithm is used to determine the eligibility of the voltage, including a nine-domain diagram algorithm that divides the combination of voltage and power factor into nine different areas, each area corresponding to a specific control action, and determines the current working area based on the collected voltage and power factor of the 10kV line. The current working area will guide the system to take corresponding voltage regulation measures.

[0054] It should be noted that the discrimination and control rules of the nine-domain graph algorithm are mainly as follows:

[0055] Voltage level division: The voltage level is divided into different intervals, each interval corresponds to a specific voltage range. These intervals can be the upper limit, lower limit and standard value of the voltage.

[0056] Reactive power classification: Similarly, reactive power is also divided into different levels or intervals, each level corresponds to a specific reactive power range.

[0057] Based on the above factors, the distribution line is divided into nine different control areas, each of which corresponds to a specific set of voltage, reactive power, time and load rate conditions. In each control area, the control measures to be taken under specific conditions are determined by the set control rules, such as switching capacitors, adjusting transformer tap positions, starting reactive compensation equipment, etc.

[0058] It should also be noted that by combining the flow direction identification with the nine-domain diagram algorithm, accurate judgment can be made based on the actual operating status of the line, avoiding the limitations of traditional control methods based on fixed thresholds and improving the effectiveness of voltage regulation control.

[0059] S3: Perform voltage regulation control according to the pre-processing status information and the eligibility of the voltage.

[0060] Furthermore, voltage regulation control is performed according to the pre-processing state information and the qualification of the voltage, including using a bidirectional voltage regulation controller to regulate the voltage based on the determination of the flow direction and the nine-domain diagram algorithm; when the voltage value output by the nine-domain diagram algorithm is higher than the qualified range, the system will cut off the capacitor to reduce the voltage; when the voltage value output by the nine-domain diagram algorithm is lower than the qualified range, the system will put in capacitors to increase the voltage; when the voltage value output by the nine-domain diagram algorithm is within the qualified range, the system does not perform any voltage regulation action.

[0061] It should be noted that if the Figure 2 As shown, the nine-domain diagram algorithm control principle of the bidirectional voltage regulation controller.

[0062] Area 1: The higher the power factor and voltage, the more capacitors are cut. If there are no capacitors to cut, the voltage is reduced.

[0063] Area 2: The power factor is normal, the voltage exceeds the upper limit, and the voltage is reduced;

[0064] Area 3: The lower the power factor and the higher the voltage, the lower the voltage will be.

[0065] Area 4: The power factor exceeds the lower limit and the voltage is normal, so the capacitor is used;

[0066] Area 5: The lower the power factor and voltage, the more capacitors are used. If no capacitors are available, the voltage is increased.

[0067] Area 6: The power factor is normal, the voltage exceeds the lower limit, and the voltage is increased;

[0068] Area 7: The higher the power factor is and the lower the voltage is, the capacitors should be cut off;

[0069] Area 8: The power factor exceeds the upper limit and the voltage is normal, so the capacitor is cut off;

[0070] Area 9: The power factor and voltage are normal, and the controller does not operate.

[0071] It should also be noted that the joint control strategy based on the flow direction and the nine-domain diagram algorithm can effectively avoid over-limit voltage regulation and frequent actions, improve the stability and efficiency of voltage regulation control, and extend the service life of the equipment.

[0072] Example 3

[0073] In the third embodiment of the present invention, a series of experiments are designed to verify the effectiveness of the 10kV line voltage regulation control method. The purpose of the experiment is to verify the effectiveness of the voltage regulation control through the nine-domain diagram algorithm and power flow direction identification.

[0074] Firstly, an experimental environment simulating a 10kV power line is established, which can simulate the voltage, current and circuit breaker status information.

[0075] Before the experiment began, the status information of the 10kV line was detected and collected, including the voltage status, current status and circuit breaker status information. This information was collected in real time by high-precision sensors and transmitted to the central control system. In the preprocessing stage, the system identified the direction of the power flow by monitoring the voltage and current phases in the line and determined the voltage regulation measures.

[0076] Next, the nine-domain graph algorithm is used to determine the eligibility of the voltage. The algorithm divides the combination of voltage and power factor into nine different areas, each of which corresponds to a specific control action. Based on the collected voltage and power factor of the 10kV line, the current working area is determined to guide the system to take corresponding voltage regulation measures.

[0077] In the voltage regulation control stage, the system uses a bidirectional voltage regulation controller based on the determination of the flow direction and the nine-domain diagram algorithm. When the flow direction is forward, the system takes corresponding voltage regulation measures according to the voltage situation; if a system failure occurs, the flow direction is reverse; when the voltage value is within the qualified range, the system does not perform any voltage regulation action.

[0078] The power factor range is set between 0.8 (lag) and 1.0 (unity power factor). In the following experimental results, the circuit breaker status is closed. The following table shows the experimental data of the 10kV line voltage regulation control method:

[0079] Table 1

[0080]

[0081]

[0082] By analyzing the above table data, it is obvious that the beneficial effect of the 10kV line voltage regulation control method can be seen. First, by real-time monitoring of voltage and current status, the system can accurately identify the direction of power flow, which is crucial for determining voltage regulation measures. For example, in line 1, loads 500kVA and 1500kVA, and in line 2, loads 500kVA and loads 1500kVA, the voltage is higher than the qualified range, and the system successfully reduces the voltage by cutting off the capacitor, avoiding the overvoltage problem.

[0083] Secondly, the application of the nine-region diagram algorithm significantly improves the accuracy and response speed of voltage regulation control. In line 1, loads of 500kVA and 1500kVA, and in line 2, loads of 500kVA and 1500kVA, the voltage is lower than the qualified range. The system increases the voltage by putting in capacitors to ensure the stability of power supply. This regional division based on the combination of voltage and power factor makes the voltage regulation measures more refined and avoids the over-regulation and under-regulation problems that may be caused by traditional voltage regulation methods.

[0084] In addition, when the voltage is within the qualified range, the system does not perform any voltage regulation action, which reduces unnecessary operations and improves the stability and reliability of the system. For example, in line 1, the load is 1000kVA, and in line 2, the load is 1000kVA. Since the voltage is within the qualified range, the system does not take any voltage regulation measures, which reflects the system's intelligent monitoring capability for voltage stability.

[0085] In summary, a 10kV line voltage regulation control method realizes accurate voltage control and improves the stability and reliability of the power system through the application of the nine-domain graph algorithm. Compared with the traditional voltage regulation method, the present invention not only improves the accuracy of voltage regulation, but also reduces unnecessary operations and reduces the maintenance cost of the system, which has obvious innovation and advantages.

[0086] Example 4

[0087] Reference Figures 3-4, which is the fourth embodiment of the present invention, provides a 10kV line voltage regulation control device, including a voltage regulation device 100 that realizes an automatic bypass function by being electrically connected to a 10kV line, and adjusts when the voltage is too high or too low, thereby improving the stability of the power grid and the power supply quality.

[0088] Furthermore, the voltage regulating device 100 includes a group of bidirectional voltage regulating controllers 101, a group of voltage regulators 102 electrically connected to the bidirectional voltage regulating controller 101, two groups of lightning arresters 103, two groups of power supply voltage transformers PT1 and PT2, two groups of vacuum circuit breakers QF1 and QF3 and a group of bypass circuit breaker QF2; the two groups of vacuum circuit breakers QF1 and QF3 are provided with isolating switches QS1 and QS3; and a group of bypass circuit breaker QF2 is provided with an isolating switch QS2.

[0089] Furthermore, the voltage regulating device 100 is provided with an input terminal 104 and an output terminal 105; two groups of power supply voltage transformers PT1 and PT2 are respectively installed at both ends of the input terminal 104 and the output terminal 105; two groups of vacuum circuit breakers QF1 and QF3 are respectively installed at both ends of the input terminal 104 and the output terminal 105; both ends of the bypass circuit breaker QF2 are respectively installed on the outgoing line side of the disconnector QS1 and the incoming line side of the disconnector QS3.

[0090] Specifically, Figure 3 The embodiment of the present invention also provides a structural circuit schematic diagram of a 10kV line voltage regulation control device:

[0091] The outdoor high-voltage vacuum circuit breaker QF1 at the input end has built-in electronic voltage transformer and current transformer, which is the switching switch of the voltage regulating device. When the voltage regulator 102 is started, it is closed, which is regarded as a line section circuit breaker, and it is opened when it is exited. The built-in electronic voltage transformer and current transformer provide real-time input voltage and current sampling values.

[0092] The input-end isolating switch QS1 is installed on the outgoing line side of QF1. After QF1 is opened, the interlock is disconnected, providing an obvious disconnection point for maintenance.

[0093] The input voltage transformer PT1 is installed on the incoming line side of QF1 to provide 220V power supply for the voltage regulator controller 101 during forward voltage regulation.

[0094] The output voltage transformer PT2 is installed on the outgoing line side of QF3 to provide 220V power supply for the voltage regulator controller 101 when reverse voltage regulation is performed.

[0095] The bypass circuit breaker QF2 can be an ordinary outdoor circuit breaker. It is closed when exiting and is regarded as a line section circuit breaker; it is opened when the voltage regulator 102 is put into operation.

[0096] The bypass disconnector QS2 is installed on the outgoing line side of QF2. The interlock is disconnected after QF2 is opened, providing an obvious disconnection point for maintenance.

[0097] The outdoor high-voltage vacuum circuit breaker QF3 at the output end has built-in electronic voltage transformer and current transformer, which is the switching switch of the voltage regulating device. When the voltage regulator 102 is started, it is closed, which is regarded as a line section circuit breaker, and it is opened when it is exited. The built-in electronic voltage transformer and current transformer provide real-time output voltage and current sampling values.

[0098] The outgoing line isolating switch QS3 is installed on the outgoing line side of the voltage regulator to provide an obvious disconnection point for maintenance.

[0099] It should be noted that an installation motherboard is provided inside the chassis of the bidirectional voltage regulating controller 101, and the installation motherboard has a slot matching the functional board for carrying and connecting the functional board; the chassis of the bidirectional voltage regulating controller 101 is provided with eight groups of indicator lights and four groups of buttons electrically connected to the functional board, and the chassis of the bidirectional voltage regulating controller 101 is also embedded with a touch screen electrically connected to the functional board.

[0100] It should also be noted that the functional boards adopt a modular design, with a total of 8 boards, including power board PWR, analog acquisition board ACI, central processing unit board CPU, digital input board DI and digital output board DO, one power board PWR and one central processing unit board CPU, two analog acquisition boards ACI boards, two digital input boards DI, two digital output boards DO, and flexible configuration and quick maintenance are achieved through plug-in connections.

[0101] It should also be noted that the use of redundant DI and DO boards enhances the reliability of the system. Even if one board fails, the other board can still work normally to ensure the stable operation of the system, aiming to improve the voltage quality of the distribution network and enhance the reliability and maintainability of the system.

[0102] It should also be noted that the touch screen is embedded in the chassis panel, providing a human-computer interaction interface, displaying information such as measurement data, switch status, real-time waveform, event records, protection settings and system parameters; eight groups of indicator lights indicate operation / fault, self-test, communication, alarm, upshift, downshift, forward and reverse status, and four groups of buttons are used for reset, emergency stop, upshift and downshift operations, and the same functions can also be achieved through the touch screen.

[0103] In summary, the beneficial effect of a 10kV line voltage regulation control device lies in the back-insertion chassis structure. Its modular hardware design decomposes the traditional integrated voltage regulation control device into multiple independent functional modules and connects them through standardized interfaces. The modular design makes the system easy to expand. The system functions can be flexibly configured by adding or removing functional boards to meet the needs of different application scenarios, which enhances the flexibility of the device. The key functional modules adopt a redundant design. Even if a single module fails, the system can still maintain normal operation, which improves the reliability and stability of the system. The use of a touch screen instead of a traditional LCD screen facilitates the flexible configuration of the human-computer interaction interface, eliminates the setting parameters, page turning and confirmation buttons, and the device interface is simple; and the necessary manual operation buttons are configured to facilitate users to operate on-site.

[0104] Example 5

[0105] Reference Figure 5 , which is the fifth embodiment of the present invention, provides a 10kV line voltage regulation control system, including a data acquisition and storage module, a flow direction identification module, a voltage qualification judgment module, and a voltage regulation control module.

[0106] Specifically, the data acquisition and storage module is used to collect the status information of the voltage, current, circuit breaker status and power flow direction of the 10kV line in real time, pre-process the collected real-time data, and store it together with the historical data in the internal storage unit of the controller; the power flow direction identification module identifies the direction of the power flow by monitoring the voltage and current phase in the line; the voltage qualification judgment module uses the 10kV line voltage regulation control method, device and system, and electronic equipment nine-domain diagram algorithm to judge whether the voltage is within the qualified range based on the collected voltage and power factor data; the voltage regulation control module formulates a voltage regulation strategy based on the pre-processed status information, voltage qualification and power flow direction.

[0107] It should be noted that the data acquisition and storage module is a system component used to collect and save power system operation data, and can obtain key operating parameters in real time; the flow direction identification module is responsible for determining the direction of current flow in the power system, which is crucial for the analysis and control of the power system; the voltage qualification judgment module is used to evaluate the voltage level in the power system to ensure that it meets the prescribed standards; the voltage regulation control module formulates and implements voltage regulation strategies based on the system status and needs to maintain the stability of the power system.

[0108] It should also be noted that the data acquisition and storage module can collect key operating data of 10kV lines in real time, such as voltage, current and circuit breaker status. Preprocessing this data can remove noise and outliers, improve data quality, and provide an accurate basis for subsequent analysis; by storing real-time data together with historical data on the cloud computing platform, big data technology can be used for in-depth analysis, identify trends and patterns, and provide support for long-term planning and maintenance of the power system; the flow direction identification module accurately determines the direction of power flow by monitoring the phase relationship between voltage and current, and the voltage qualification judgment module uses the nine-domain graph algorithm and combines the collected voltage and power factor data to determine whether the voltage is within the qualified range. The combination of the two can provide more accurate voltage control and improve the reliability and power quality of the power system; the voltage regulation control module formulates a voltage regulation strategy based on the preprocessed status information, voltage qualification and flow direction, and can be dynamically adjusted to adapt to the real-time changes of the power grid to ensure the stability of the voltage level.

[0109] This embodiment also provides an electronic device, which is suitable for the case of a 10kV line voltage regulation control method, and includes a central processing unit CPU, a telemetry input interface, a binary input interface, a binary output interface, a memory FLASH, a memory FRAM, a touch screen, an analog-to-digital converter ADC, an Ethernet interface, an RS485 interface and a debugging print interface Debug; the telemetry input interface is connected to the CPU through the ADC, and the above-mentioned binary input interface, binary output interface, memory FLASH, memory FRAM, Ethernet interface, RS485 interface and debugging print interface Debug are all connected to the CPU; the memory is used to store computer executable instructions, and the processor is used to execute computer executable instructions to implement the 10kV line voltage regulation control method proposed in the above embodiment.

[0110] The computer device may be a terminal, and the computer device includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the computer device is used 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 the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. The display screen of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device may be a touch layer covering the display screen, or a key, trackball or touchpad provided on the housing of the computer device, or an external keyboard, touchpad or mouse, etc.

[0111] This embodiment further provides a storage medium on which a computer program is stored. When the program is executed by a processor, the 10kV line voltage regulation control method proposed in the above embodiment is implemented.

[0112] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0113] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0114] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0115] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc. It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limited. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0116] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A 10kV line voltage regulation control method, characterized in that: include, Detect and collect status information of 10kV lines; Pre-process the status information of 10kV lines and use the nine-domain graph algorithm to determine the eligibility of voltage; Voltage regulation control is performed according to the pre-processing state information and the eligibility of the voltage.

2. The 10kV line voltage regulation control method according to claim 1, characterized in that: The detection collects status information of the 10kV line, including voltage status, current status and circuit breaker status information.

3. The 10kV line voltage regulation control method according to claim 2, characterized in that: The pre-processing of the status information of the 10 kV line includes the system identifying the direction of the power flow by monitoring the voltage and current phases in the line.

4. The 10kV line voltage regulation control method according to claim 3, characterized in that: The nine-domain diagram algorithm is used to judge the eligibility of the voltage, including the 10kV line voltage regulation control method, device and system, and electronic equipment. The nine-domain diagram algorithm divides the combination of voltage and power factor into nine different areas, each area corresponds to a specific control action, and determines the current working area based on the collected voltage and power factor of the 10kV line. The current working area will guide the system to take corresponding voltage regulation measures.

5. The 10kV line voltage regulation control method according to claim 4, characterized in that: The voltage regulation control is performed according to the pre-processing state information and the eligibility of the voltage, including using a bidirectional voltage regulation controller to regulate the voltage based on the determination of the power flow direction and the nine-domain diagram algorithm; When the voltage value output by the nine-domain graph algorithm is higher than the qualified range, the system will cut off the capacitor to reduce the voltage; When the voltage value output by the nine-domain graph algorithm is lower than the qualified range, the system will put in a capacitor to increase the voltage; When the voltage value output by the nine-domain diagram algorithm is within the qualified range, the system does not perform any voltage regulation action.

6. A 10kV line voltage regulation control device, comprising the line voltage regulation control method according to any one of claims 1 to 5, characterized in that: A voltage regulating device (100), comprising a set of bidirectional voltage regulating controllers (101), a set of voltage regulators (102) electrically connected to the bidirectional voltage regulating controllers (101), two sets of lightning arresters (103), two sets of power supply voltage transformers PT1 and PT2, two sets of vacuum circuit breakers QF1 and QF3, and a set of bypass circuit breakers QF2; The two groups of vacuum circuit breakers QF1 and QF3 are provided with isolating switches QS1 and QS3; The group of bypass circuit breakers QF2 is provided with an isolating switch QS2.

7. The 10kV line voltage regulation control device according to claim 6, characterized in that: The voltage regulating device (100) is provided with an input end (104) and an output end (105); The two sets of power supply voltage transformers PT1 and PT2 are installed at both ends of the input end (104) and the output end (105) respectively; The two groups of vacuum circuit breakers QF1 and QF3 are installed at both ends of the input end (104) and the output end (105) respectively; The two ends of the bypass circuit breaker QF2 are respectively installed on the outgoing line side of the disconnector QS1 and the incoming line side of the disconnector QS3.

8. A 10kV line voltage regulation control system, comprising the 10kV line voltage regulation control method according to any one of claims 1 to 5, characterized in that: It includes data acquisition and storage module, flow direction identification module, voltage qualification judgment module and voltage regulation control module; The data acquisition and storage module is used to collect the voltage, current, circuit breaker status and power flow direction status information of the 10kV line in real time, pre-process the collected real-time data, and store it together with the historical data in the controller's internal storage unit; The power flow direction identification module identifies the direction of the power flow by monitoring the voltage and current phases in the line; The voltage qualification judgment module uses the 10kV line voltage regulation control method, device and system, and the electronic equipment nine-domain diagram algorithm to judge whether the voltage is within the qualified range based on the collected voltage and power factor data; The voltage regulation control module formulates a voltage regulation strategy according to the pre-processed status information, voltage eligibility and power flow direction.

9. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the 10kV line voltage regulation control method described in any one of claims 1-5 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the 10kV line voltage regulation control method according to any one of claims 1 to 5 are implemented.

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