Substation load-taken direction vector information synchronization system, method, device and equipment

Abstract

The application discloses a kind of substation with load direction vector information synchronization method, device, equipment and medium, the system includes: optical modulator, chip system and the data sensor being arranged in secondary circuit;Data sensor acquires secondary circuit multi-cycle multi-way with load direction vector signal;Optical modulator uses each cycle multi-way voltage and current signal modulation high-speed baseband signal obtains multiple first modulation signals, and by chip system determines multiple synchronization strategies;Optical modulator uses each synchronization strategy modulation obtains multiple second modulation signals and carries out high-speed signal synchronization to secondary circuit;Data sensor acquires the multi-way with load direction vector signal after each synchronization strategy is completed by optical modulator modulation obtains each third modulation signal, chip system calculates at least one synchronization effect evaluation index and determines target signal synchronization strategy.The application embodiment solves the problem that substation with load direction vector information synchronization efficiency is low, precision is poor, improves the reliability of with load direction vector information synchronization.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of information and communication technology, and in particular to a substation load measurement vector information synchronization system, method, device and electronic equipment. BACKGROUND

[0002] With the increasing demand for electricity and the continuous optimization of energy structure, as the core of the power system, the substation bears the important role of connecting power, load and network management. This change puts forward more strict requirements on the communication ability and automation level of the substation.

[0003] In the prior art, the load test method uses a phase table to measure and record data, and then analyzes the hexagon chart manually to determine the correctness of the AC secondary circuit wiring and formulate a synchronization scheme. This method requires high time and labor costs, and relies on the working experience and theoretical knowledge of the operator, resulting in high error and risk of judgment failure in actual operation. Due to the instability of the signal and the potential damage risk of the communication channel, the traditional multi-point synchronization measurement vector method is difficult to measure accurate results, which limits the synchronization accuracy and reliability of the substation load measurement vector information synchronization scheme. SUMMARY

[0004] The present application provides a substation load measurement vector information synchronization system, method, device and electronic equipment, which can effectively improve the efficiency, accuracy and reliability of the substation load measurement vector information synchronization under the condition of unstable and fluctuating power system, and further ensure the correct action of protection.

[0005] According to an aspect of the embodiment of the present application, a substation load measurement vector information synchronization system is provided, comprising: a data sensor, an optical modulator and a chip system, the data sensor is arranged close to the secondary circuit of the low voltage side of the substation; the data sensor is configured to collect and acquire a plurality of load measurement vector signals from the secondary circuit of the low voltage side of the substation at a plurality of time periods, and send the signals to the optical modulator; the optical modulator is configured to modulate the high-speed baseband signal using the plurality of voltage and current signals at each time period to obtain a first modulation signal corresponding to each time period, and send the signal to the chip system; the chip system is configured to determine a plurality of signal synchronization strategies based on the first modulation signal, and send the strategies to the optical modulator; the optical modulator is further configured to modulate the high-speed baseband signal using the signal synchronization strategies to obtain a plurality of second modulation signals, and send the signals to the secondary circuit for high-speed signal synchronization under the plurality of signal synchronization strategies; the data sensor is further configured to collect and acquire a plurality of load measurement vector signals corresponding to each signal synchronization strategy from the secondary circuit after the signal synchronization under each signal synchronization strategy is completed, and send the signals to the optical modulator; the optical modulator is further configured to modulate the high-speed baseband signal using the plurality of load measurement vector signals corresponding to each signal synchronization strategy to obtain a third modulation signal corresponding to each signal synchronization strategy, and send the signal to the chip system; and the chip system is further configured to calculate at least one synchronization effect evaluation index based on the third modulation signal, and determine a target signal synchronization strategy from the plurality of signal synchronization strategies based on the synchronization effect evaluation index.

[0006] According to another aspect of the embodiment of the present application, a substation load measurement vector information synchronization method is provided, which is executed by a chip system in a substation load measurement vector information synchronization system, comprising: acquiring a plurality of first modulation signals modulated and sent by an optical modulator; wherein the first modulation signals are obtained by modulating a high-speed baseband signal based on a plurality of load measurement vector signals collected by a data sensor from a secondary circuit of a low voltage side of a substation at a plurality of time periods; determining a plurality of signal synchronization strategies based on the first modulation signals, and sending the strategies to the optical modulator, so that the optical modulator modulates the strategies to obtain a plurality of second modulation signals, and sends the signals to the secondary circuit for high-speed signal synchronization under the plurality of signal synchronization strategies; acquiring a plurality of third modulation signals modulated and sent by the optical modulator; wherein the third modulation signals are obtained by modulating a high-speed baseband signal based on a plurality of load measurement vector signals corresponding to each signal synchronization strategy collected by the data sensor from the secondary circuit after the signal synchronization under each signal synchronization strategy is completed; calculating at least one synchronization effect evaluation index based on the third modulation signal, and determining a target signal synchronization strategy from the plurality of signal synchronization strategies based on the synchronization effect evaluation index.

[0007] According to another aspect of the embodiments of the present application, there is provided a substation on-load measurement vector information synchronization device configured in a chip system in a substation on-load measurement vector information synchronization system, the device comprising: a first modulated signal acquisition module configured to acquire a plurality of first modulated signals modulated and transmitted by an optical modulator; wherein the plurality of first modulated signals are a plurality of on-load measurement vector signals collected by the optical modulator from a secondary circuit at a low voltage side of a substation at a plurality of time periods based on a data sensor, and obtained after the high-speed baseband signals are modulated; a synchronization strategy sending module configured to determine a plurality of signal synchronization strategies according to the plurality of first modulated signals, and send each signal synchronization strategy to the optical modulator, so that the optical modulator modulates each signal synchronization strategy to obtain a plurality of second modulated signals, and transmits the plurality of second modulated signals to the secondary circuit to perform high-speed signal synchronization under the plurality of signal synchronization strategies; a third modulated signal acquisition module configured to acquire a plurality of third modulated signals modulated and transmitted by the optical modulation module; wherein the plurality of third modulated signals are a plurality of on-load measurement vector signals collected by the optical modulator from the secondary circuit again after signal synchronization under each signal synchronization strategy based on the data sensor, and obtained after the high-speed baseband signals are modulated; and a target signal synchronization strategy determination module configured to calculate at least one synchronization effect evaluation index according to each third modulated signal, and determine a target signal synchronization strategy from the plurality of signal synchronization strategies according to the synchronization effect evaluation index.

[0008] According to another aspect of the embodiments of the present application, there is provided an electronic device, comprising:

[0009] at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the substation on-load measurement vector information synchronization method of any of the embodiments of the present application.

[0010] According to another aspect of the embodiments of the present application, there is provided a computer readable storage medium storing computer instructions, the computer instructions being used to enable a processor to implement the substation on-load measurement vector information synchronization method of any of the embodiments of the present application when executed by the processor.

[0011] According to another aspect of the embodiments of the present application, there is also provided a computer program product comprising computer programs / instructions, the computer programs / instructions being executed by a processor to implement the steps of the method of any of the embodiments of the present application.

[0012] The technical scheme of the embodiment of the present application is that the data sensor respectively collects a plurality of time period under the plurality of load measurement vector signals from the secondary circuit of the low voltage side of the transformer substation and sends the signals to the optical modulator, the optical modulator modulates the plurality of voltage and current signals under each time period on the high-speed baseband signal respectively, obtains the first modulation signal corresponding to each time period respectively and sends the signal to the chip system, according to the first modulation signal, the chip system determines a plurality of signal synchronization strategies, adopts the modulation mode based on the high-speed baseband signal, realizes the high-speed transmission of the load measurement vector signal and realizes the data processing of the load measurement vector signal and the generation of the signal synchronization strategy by the chip system, provides the optional scheme for the subsequent target signal synchronization strategy, the optical modulator modulates the high-speed baseband signal according to the signal synchronization strategy, obtains a plurality of second modulation signals, and sends the plurality of second modulation signals to the secondary circuit respectively to realize the high-speed signal synchronization under a plurality of signal synchronization strategies, after the signal synchronization under each signal synchronization strategy is completed, the data sensor collects the plurality of load measurement vector signals corresponding to each signal synchronization strategy from the secondary circuit again and sends the signals to the optical modulator, the optical modulator modulates the high-speed baseband signal according to the plurality of load measurement vector signals corresponding to each signal synchronization strategy, obtains the third modulation signal corresponding to each signal synchronization strategy respectively and sends the signal to the chip system, according to the third modulation signal, the chip system calculates at least one synchronization effect evaluation index, and according to the synchronization effect evaluation index, the chip system determines the target signal synchronization strategy in the plurality of signal synchronization strategies, the high-speed baseband signal transmission synchronization strategy is realized in the secondary circuit, and the chip system selects the optimal synchronization scheme from a plurality of synchronization strategies according to the preset evaluation standard, realizes the full-automatic process from signal collection to synchronization strategy decision, not only improves the precision of the load measurement vector information synchronization of the transformer substation, but also enhances the efficiency of the synchronization process and the reliability of the synchronization scheme.

[0013] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1It is a structure schematic diagram of a substation with load measurement vector information synchronization system provided according to the embodiment one of the present application.

[0016] Figure 2 It is a flow chart of a substation with load measurement vector information synchronization method provided according to the embodiment two of the present application.

[0017] Figure 3 It is a structure schematic diagram of a substation with load measurement vector information synchronization device provided according to the embodiment three of the present application.

[0018] Figure 4 It is a schematic diagram of a specific application scenario applicable to the embodiment of the present application.

[0019] Figure 5 It is a structure schematic diagram of an electronic device for implementing the substation with load measurement vector information synchronization method of the embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is only a part of the embodiment of the present application, not all. Based on the embodiment in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0021] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0022] Embodiment one

[0023] Figure 1 The structure schematic diagram of a substation with load measurement vector information synchronization system provided for the embodiment one of the present application, the present embodiment can be applicable to the case of substation with load measurement vector information synchronization under the condition of unstable and large fluctuation of power system. For example, Figure 1As shown, the system comprises: a data sensor 110, a light modulator 120 and a chip system 130, the data sensor 110 is arranged close to the secondary circuit of the low-voltage side of the transformer substation.

[0024] The data sensor 110 is used to collect a plurality of load-bearing measurement vector signals from the secondary circuit of the low-voltage side of the transformer substation respectively at a plurality of time periods and send them to the light modulator 120.

[0025] In the embodiment of the present application, the plurality of time periods can be understood as follows: in the power system, since the voltage and current signals of alternating current are periodically changed at a fixed frequency, when the voltage and current values of the current transformer measurement winding in a fixed time period are collected in multiple groups, in fact, the load-bearing measurement vector signals in multiple time periods are the multiple groups of data collected in the sampling period. For example, the fixed frequency is 50 Hz, which means there are 50 cycles per second, when the fixed time period is 60 seconds and the collection is divided into 10 groups, the sampling period is 6 seconds, in fact, 10 groups of data are recorded, each group of data records 300 cycles of signals occurring in 6 seconds, and the 10 groups of data record 3000 cycles of signals occurring in 60 seconds.

[0026] In the embodiment of the present application, the plurality of load-bearing measurement vector signals can be understood as follows: in the running state of the transformer substation, the current and voltage in the power system are measured synchronously. The plurality of refers to the voltage and current values of different windings of the current transformer and voltage transformer installed on the secondary circuit of the low-voltage side of the transformer substation. The current transformer mainly converts the large current in the alternating current circuit into a small current of a certain proportion for measurement and relay protection. The voltage transformer is used to convert high voltage into low voltage in proportion for protection, metering and instrument devices. Among them, the current transformer and the voltage transformer each contain a protection winding, a measurement winding, a metering winding and a fault recording winding. The protection winding is mainly used for the relay protection system, and its accuracy requirement is relatively low, and it is usually installed on the bus side of the current transformer to ensure that the fault part can be quickly and accurately removed when internal faults occur, reducing the power outage range. The measurement winding is used for power quality monitoring and power system analysis, and provides detailed information of the power system running state, and its accuracy requirement is higher than that of the protection winding, and it is usually used to measure the effective value, phase and the like of voltage and current. The metering winding is used for electric energy metering, and has the highest accuracy requirement to ensure the accuracy of electric energy metering. The fault recording winding is used to record the current and voltage waveform when the fault occurs in the power system, and provides important data for fault analysis and positioning.

[0027] Specifically, in the case of normal operation of the power system and with actual load, according to the preset collection time length and collection group number, the data sensor 110 measures the voltage values and current values of multiple periods of the protection winding, the measurement winding, the metering winding and the fault recording winding of the current transformer and the voltage transformer installed on the secondary circuit of the low-voltage side of the transformer substation, forms multiple sets of collection data, each set of collection data including the voltage values and current values of the protection winding, the measurement winding, the metering winding and the fault recording winding of the voltage sensor and the current sensor within the sampling time period, and transmits the collected data to the optical modulator 120, thereby providing a data basis for subsequent determination of multiple load-bearing direction vector information synchronization schemes, improving the automation level of load-bearing direction vector information synchronization data collection, reducing the labor cost and time cost, and improving the collection efficiency.

[0028] The optical modulator 120 is configured to modulate the high-speed baseband signal using the multi-channel voltage and current signals in each time period respectively to obtain a first modulation signal corresponding to each time period respectively, and transmit the first modulation signal to the chip system 130.

[0029] In the embodiment of the present application, the first modulation signal can be understood as a signal corresponding to each time period obtained by modulating the high-speed baseband signal using the multi-channel voltage and current signals in each time period, that is, the collected multiple sets of load-bearing direction vector data information are encoded into a modulation signal on the high-speed baseband signal carrier in units of groups, and each first modulation signal contains a set of collected load-bearing direction vector data information.

[0030] Specifically, the optical modulator 120 groups the multi-channel voltage and current signals in multiple time periods according to the sampling time period, independently applies the high-speed baseband signal modulation technology to each set of data collected, thereby converting each set of data into a corresponding modulation signal, and transmits the modulation signal to the chip system 130. The chip system 130 can be a field-programmable gate array (FPGA), which has the advantages of high phase synchronization accuracy and low hardware implementation complexity compared with the traditional implementation method using a digital signal processor or a high-speed digital-to-analog converter. The FPGA uses the in-chip logic resource to generate a high-speed baseband signal, and the maximum speed of the signal can reach 32.75 Gbit / s, thereby improving the transmission rate of the load-bearing direction vector data.

[0031] The chip system 130 is configured to determine multiple signal synchronization strategies according to the first modulation signals and transmit the signal synchronization strategies to the optical modulator 120.

[0032] Specifically, the chip system 130 performs signal processing and data analysis according to the received plurality of first modulation signals, identifies abnormal values or mutation regions in each group of data, and formulates a corresponding data correction scheme accordingly, and sends the determined plurality of corresponding signal synchronization strategies to the optical modulator 120. Each first modulation signal corresponds to a load bearing vector information synchronization strategy, providing an optional strategy for selecting a target load bearing vector information synchronization strategy.

[0033] The optical modulator 120 is also used to modulate the high-speed baseband signal using each signal synchronization strategy to obtain a plurality of second modulation signals, and send the plurality of second modulation signals to the secondary circuit for high-speed signal synchronization under a plurality of signal synchronization strategies.

[0034] In the embodiment of the application, the second modulation signal can be specifically understood as: the plurality of signal synchronization strategies determined by the chip system 130 are respectively encoded onto the high-speed baseband signal carrier to obtain a signal corresponding to each synchronization strategy. Each second modulation signal contains a collected load bearing vector data information.

[0035] Specifically, the chip system 130 determines each signal synchronization strategy, respectively modulates it onto the high-speed baseband signal, thereby converting each signal synchronization strategy into a corresponding modulation signal, and ensures efficient transmission of the synchronization strategy through the high-speed baseband signal. The chip system 130 can be an FPGA. The phase synchronization control module of the FPGA can dynamically adjust the high-speed signal transmission clock phase in real time through a closed-loop control loop, realize phase synchronization of current, voltage and power high-speed baseband signals, and improve the synchronization efficiency of the loaded direction finding vector information. The multiple second modulation signals are sent to the secondary circuit for high-speed signal synchronization under multiple signal synchronization strategies. The effective scope of the synchronization strategy is defined as the specific interval of signal acquisition, which corresponds to the interval of the power system where the direction finding vector signal is initially collected. Each interval exhibits different voltage and current characteristics due to its unique operating state and load conditions, and is equipped with specific voltage transformers and current transformers with corresponding transformation ratio settings. Therefore, these voltage transformers and current transformers are installed in multiple different system intervals to meet the monitoring requirements of each interval. The multiple sets of current and voltage data collected in the same interval are used to develop multiple synchronization strategies, each of which is used for synchronization of the loaded direction finding vector information in this interval. For example, if the data collection is divided into 10 groups, and each group has a collection time of 6 seconds, a total of 1 minute, then 10 independent synchronization strategies will be formed. Each synchronization strategy is designed to adapt to the characteristics of its corresponding interval to ensure the accuracy and effectiveness of the synchronization process. This multi-strategy synchronization scheme can achieve more accurate and personalized synchronization of the loaded direction finding vector information for specific conditions in different intervals, providing multiple options for subsequent target signal synchronization strategy decision-making, and improving the reliability of the loaded direction finding vector information synchronization.

[0036] The data sensor 110 is also configured to, after the signal synchronization under each signal synchronization strategy is completed, collect the multiple sets of loaded direction finding vector signals corresponding to each signal synchronization strategy from the secondary circuit of the substation low-voltage side and send them to the optical modulator 120.

[0037] Specifically, the data sensor 110 collects the voltage and current values of the protection winding, measurement winding, metering winding and fault recording winding of the current transformer and voltage transformer in the secondary circuit of the substation low-voltage side after each signal synchronization strategy is completed, forms multiple sets of collected data, and sends them to the optical modulator 120 to provide a data basis for subsequent evaluation of the synchronization strategy effect.

[0038] The optical modulator 120 is also configured to modulate the high-speed baseband signal using the multiple sets of loaded direction finding vector signals corresponding to each signal synchronization strategy to obtain third modulation signals corresponding to each signal synchronization strategy, and send them to the chip system 130.

[0039] In the embodiment of the present application, the third modulation signal can be understood as: the data sensor 110 collects and sends the synchronized multiple sets of multi-channel loaded direction finding vector signals, and modulates the high-speed baseband signal to obtain a modulation signal corresponding to each synchronization strategy. Each third modulation signal contains a synchronized loaded direction finding vector data information collected.

[0040] Specifically, the optical modulator 120, after receiving the synchronized multiple sets of multi-channel loaded direction finding vector signals sent by the data sensor 110, modulates the high-speed baseband signal using the multi-channel loaded direction finding vector signal corresponding to each signal synchronization strategy, respectively, to obtain a modulation signal corresponding to each signal synchronization strategy. The high-speed baseband signal improves the transmission rate of the loaded direction finding vector signal, and the modulation signal is sent to the chip system 130, respectively.

[0041] The chip system 130 is also used to calculate at least one synchronization effect evaluation index according to each third modulation signal, and determine a target signal synchronization strategy from the multiple signal synchronization strategies according to the synchronization effect evaluation index.

[0042] Specifically, the chip system 130 analyzes the synchronized loaded direction finding vector data information according to each third modulation signal, respectively, and calculates at least one synchronization effect evaluation index. According to the synchronization effect evaluation index, the synchronization strategy with the best comprehensive evaluation index is determined as the target signal synchronization strategy from the multiple signal synchronization strategies. Through the optimization process in multiple synchronization strategies, the synchronization accuracy of the loaded direction finding vector is ensured, and the reliability of the loaded direction finding vector synchronization is improved. The synchronization effect evaluation index can be one or more of signal-to-noise ratio, correlation coefficient, root mean square difference, time synchronization accuracy, and inter-channel delay time difference.

[0043] Optionally, the transformer station loaded direction finding vector information synchronization system further comprises: an optical coupling isolation module connected with the optical modulator 120; the optical coupling isolation module is used to electrically isolate the optical modulator 120 to protect the optical modulator 120 from damage caused by high voltage or current, and ensure the safety and reliability of signal transmission.

[0044] Specifically, in the transformer station loaded direction finding vector application scenario, the optical coupling isolation module protects sensitive equipment such as the optical modulator 120 from damage caused by high voltage or current through electrical isolation, while ensuring the safety and reliability of signal transmission. The optical coupling isolation module is based on the photoelectric effect and consists of a light-emitting diode and a light-sensitive receiver (such as a light-sensitive triode or a light-sensitive diode). The light-emitting diode emits light when receiving the input signal, and the light-sensitive receiver generates a corresponding electrical signal after detecting the optical signal, realizing signal transmission and isolation. By converting the input electrical signal into an optical signal and then converting the optical signal back into an electrical signal, electrical isolation between the input and the output is achieved.

[0045] Optionally, the transformer substation with load measurement vector information synchronization system further comprises: a waveform processing module connected with the chip system 130; the waveform processing module is used to realize the calculation logic of wavelet transform algorithm; the chip system 130 is further used to: demodulate the first modulation signal to obtain the multi-channel load measurement vector signal corresponding to each time period respectively, and detect the mutation point of the multi-channel load measurement vector signal corresponding to each time period respectively by calling the wavelet transform algorithm in the waveform processing module; and determine the signal synchronization strategy according to the mutation time corresponding to each time period.

[0046] Specifically, the chip system 130 demodulates the first modulation signal obtained from the optical modulator 120 to obtain the multi-channel load measurement vector signal corresponding to each time period respectively, separates the high-speed baseband signal, and detects the mutation point of the multi-channel load measurement vector signal corresponding to each time period respectively by calling the waveform processing module connected with the chip system 130. These mutation points usually represent sudden changes in the power grid, such as fault occurrence or state switching, which are crucial for fault diagnosis and stable operation of the power grid. According to the mutation time corresponding to each time period, the signal synchronization strategy is determined to ensure the correctness of the secondary current and voltage loop of all devices in the operation process of the transformer substation, and further ensure the correct action of protection, improve the safe and stable operation of the intelligent transformer substation and accurate analysis after fault. The waveform processing module detects the mutation point of the signal by wavelet transform algorithm, for example: continuous wavelet transform, discrete wavelet transform or wavelet packet decomposition.

[0047] Optionally, the transformer substation with load measurement vector information synchronization system further comprises: a wireless communication module connected with the chip system 130; the wireless communication module is used to establish a communication connection between the system and the user terminal device; and the chip system 130 is further used to: send at least one of the multi-channel load measurement vector signal corresponding to each time period respectively, the mutation time corresponding to each time period respectively and the signal synchronization strategy in the first modulation signal demodulated respectively to the user terminal device for real-time user display.

[0048] Specifically, the wireless communication module utilizes wireless technology to build a communication network inside and outside the substation to support the data transmission requirements of various intelligent electronic devices in the smart substation and user interactions, such as printing detection report operations, viewing waveform record operations, and control parameter adjustment operations. In a smart substation, the application of a wireless communication module can reduce the complexity and cost of wiring, improve operational efficiency, and also enhance the flexibility and scalability of the system. According to the received user interaction instructions, the chip system 130 can implement the transmission of the multiple path load vector signals corresponding to each time period, the abrupt change time corresponding to each time period, and at least one of the signal synchronization strategies to the user terminal device for real-time user display, reducing the dependence on on-site maintenance personnel, reducing human resources and time costs, improving the response speed of operation and maintenance, promoting the intelligentization and efficiency of substation operation and maintenance, and improving the efficiency and reliability of substation load vector information synchronization.

[0049] Optionally, the chip system 130 is further configured to generate a high-speed baseband signal based on spatial optical communication for use by the optical modulator 120 for signal modulation.

[0050] Specifically, the transmission and processing of high-speed baseband signals directly affect the performance of the communication system, including the bit error rate, signal stability, and system reliability. High-speed baseband signals for spatial optical communication usually need to maintain a deterministic phase relationship with an external reference clock to ensure the accuracy and stability of communication. Traditional implementation methods using digital signal processors and high-speed digital-to-analog converters have the disadvantages of low phase synchronization accuracy and high hardware implementation complexity. The chip system 130 can use an FPGA to generate high-speed baseband signals and perform precise phase synchronization control by using the internal logic resources of the FPGA. This phase synchronization control module uses closed-loop control technology to dynamically adjust the phase of the transmission clock in real time, ensuring that the high-speed baseband signals of current, voltage, power, and other key parameters are synchronized in phase, not only improving the accuracy of signal processing, but also enhancing the system's response capability to real-time data transmission.

[0051] The substation load-bearing direction vector information synchronization system provided by the embodiment of the present application is composed of a data sensor, an optical modulator and a chip system arranged close to the secondary circuit of the low-voltage side of the substation, the multi-channel load-bearing direction vector signals collected are modulated by the optical modulator to high-speed baseband signals to obtain first modulation signals, and the signal synchronization strategy is determined by the chip system, which not only realizes efficient data processing of the signals, but also determines the synchronization strategy of the multiple load-bearing direction vector signals, provides optional solutions for the target signal synchronization strategy, and enhances the flexibility, accuracy and efficiency of the synchronization process; the optical modulator modulates the signal synchronization strategy to obtain multiple second modulation signals, which are respectively sent to the secondary circuit for signal synchronization, the transmission process of the signal synchronization strategy is optimized by using the high-speed baseband signal modulation technology, and the overall efficiency of the synchronization operation is improved; after the signal synchronization is completed, the multiple load-bearing direction vector signals synchronized are modulated by the optical modulator to obtain third modulation signals, the chip system calculates at least one synchronization effect evaluation index and determines the target signal synchronization strategy, realizes the full-automatic process from signal collection to synchronization strategy decision of the new equipment of the substation, the equipment whose current secondary circuit is changed, or the substation under the condition of unstable and large fluctuation of the power system, saves the labor cost and time cost, improves the synchronization precision, and enhances the efficiency of the synchronization process and the reliability of the synchronization scheme.

[0052] Embodiment two

[0053] Figure 2 A flowchart of a substation load-bearing direction vector information synchronization method is provided for the second embodiment of the present application, and the method can be executed by the substation load-bearing direction vector information synchronization system provided by any embodiment of the present application. As shown in Figure 2 the method includes:

[0054] S210, obtaining multiple first modulation signals modulated and sent by the optical modulator.

[0055] The multiple first modulation signals are the multi-channel load-bearing direction vector signals collected by the optical modulator from the secondary circuit of the low-voltage side of the substation at multiple time periods based on the data sensor, which are modulated to high-speed baseband signals.

[0056] Specifically, the data sensor is used to collect real-time current and voltage signals of a plurality of load-bearing measurement vectors in a secondary circuit of a low-voltage side of a transformer substation. The plurality of load-bearing measurement vectors collected in a plurality of time periods carry information to be transmitted, which is modulated by an optical modulator and a high-speed baseband signal to encode the information. In the scenario of multi-channel signal transmission, the optical modulator can modulate a plurality of baseband signals to obtain a plurality of first modulation signals, and use multi-channel carrier or multiplexing technology, such as optical orthogonal frequency division multiplexing, wavelength division multiplexing or optical time division multiplexing, to combine the signals into one signal for efficient transmission of more information in limited frequency band resources. The modulated optical signal is transmitted to the receiving end through an optical fiber medium, and the original electrical signal is recovered through corresponding demodulation technology, and then the information is extracted to realize efficient transmission of the load-bearing measurement vector information and improve the efficiency of load-bearing measurement vector information synchronization.

[0057] S220, a plurality of signal synchronization strategies are determined according to the plurality of first modulation signals, and each signal synchronization strategy is sent to the optical modulator, so that the optical modulator modulates each signal synchronization strategy to obtain a plurality of second modulation signals, which are sent to the secondary circuit for high-speed signal synchronization under the plurality of signal synchronization strategies.

[0058] S230, a plurality of third modulation signals modulated and sent by the optical modulation module are obtained.

[0059] The plurality of third modulation signals are obtained by modulating the high-speed baseband signal based on the plurality of load-bearing measurement vector signals collected from the secondary circuit under each signal synchronization strategy after the signal synchronization is completed by the data sensor.

[0060] S240, at least one synchronization effect evaluation index is calculated according to each third modulation signal, and a target signal synchronization strategy is determined from the plurality of signal synchronization strategies according to the synchronization effect evaluation index.

[0061] Specifically, the optical modulator modulates and transmits a plurality of load-bearing measurement vector signals, which are collected by the data sensor at different time periods, processed and modulated by the high-speed baseband signal, and transmitted and synchronized at high speed. The synchronization strategy is determined according to the characteristics of the signal, for example, the mutation point or abnormal point of the signal is obtained by video analysis method, and the correction scheme is made to repair the signal mutation point, and the target synchronization strategy is determined according to the performance index of the synchronized signal, for example, the target synchronization strategy is selected according to the signal-to-noise ratio, time domain characteristics or power characteristics of the synchronized signal, which not only improves the accuracy of signal transmission, but also enhances the efficiency and reliability of the synchronization process.

[0062] Optionally, the determining the multiple signal synchronization strategies according to the multiple first modulation signals can comprise: demodulating the multiple first modulation signals to obtain multiple load-bearing direction vector signals corresponding to each time period respectively, performing mutation point detection on the multiple load-bearing direction vector signals corresponding to each time period respectively by calling a wavelet transform algorithm in the waveform processing module, and determining the multiple signal synchronization strategies according to the mutation time corresponding to each time period.

[0063] Specifically, the multiple first modulation signals received from the optical modulator are decoded and separated to obtain multiple load-bearing direction vector signals collected by the data sensor from the secondary circuit of the low-voltage side of the transformer substation in multiple time periods, and the multiple load-bearing direction vector signals corresponding to each time period are subjected to mutation point detection by calling a wavelet transform algorithm in the waveform processing module. Wherein, the continuous wavelet transform of the signal f(t) can be represented as:

[0064] In the formula, f(t) represents the original signal, a is a scale parameter representing frequency, and a series of wavelet sub-functions with different frequencies can be obtained by adjusting a, is a normalization factor used to ensure the scale invariance of the transform, ensuring that the wavelet functions at different scales have the same energy. b is a translation parameter representing time or space position, and by adjusting b, different positions of the signal can be analyzed. ψ(t) is a wavelet mother function that satisfies the admissibility condition, and ψ * (u) is the complex conjugate of the wavelet function, used to calculate the complex wavelet coefficients in the continuous wavelet transform. Wherein, u is the normalized scale and position parameter, which can be represented as The inner product result in the wavelet transform is a complex number, and the real part and the imaginary part contain the frequency information of the signal at a certain scale and position, which can reflect the proportion of the signal at different frequency components, and provide rich time-frequency information for signal analysis. In addition, the calculation amount can be reduced by using two decimation sampling, and the frequency separation can be realized by the inner product of the digital filter and the original signal, that is:

[0065] In the formula: n is the summation index, used to traverse the coefficients or the original signal of the previous layer, k is the sampling index of the current layer, representing the a j (k) and d j (k) are the approximation coefficients and detail coefficients of the signal at the jth layer position, respectively, a j (k), d j (k) are the approximation coefficients and detail coefficients of the signal at the jth layer position, respectively, aj-1 (n) is a coefficient at the previous layer or smaller scale, which can be an approximation coefficient or a detail coefficient of the last iteration, and 2k represents the shift of the filter, where the coefficient 2 represents the binary scale factor commonly used in wavelet transform. The approximation coefficient represents the low-frequency part of the signal, reflecting the main trend and overall structure of the signal. When performing wavelet decomposition, the approximation coefficient is obtained by smoothing the signal using a low-pass filter, which usually contains the main information and large-scale features of the signal. The detail coefficient represents the high-frequency part of the signal, which is extracted from the signal using a high-pass filter, reflecting the local changes and rapid changes of the signal. In the wavelet decomposition process, the detail coefficient can reveal the mutation points and noise components in the signal. When the signal has a mutation at a certain time point, the detail coefficient of the wavelet transform will show a larger value on the corresponding time-scale plane, thereby identifying the location of the mutation point. After calling the wavelet transform algorithm in the waveform processing module to detect the mutation points of the multi-path load-bearing vector signal corresponding to each time period, a plurality of signal synchronization strategies are determined according to the mutation time corresponding to each time period. The synchronization strategy refers to synchronizing the signal based on the mutation time as the time reference, correcting the data window of the current loop vectoring element device, and realizing signal synchronization. The correction can be amplitude correction and / or phase correction of the load-bearing vector signal. For example, the fixed frequency is 50 Hz, indicating that there are 50 cycles per second, and when the fixed time length is 60 seconds, the signal data collected in the 60 seconds is the data window.

[0066] When the 60-second data is divided into 10 groups for collection, each group has a sampling period of 6 seconds, and in fact, 10 groups of data are recorded, each group recording 300 cycles of signal occurring within 6 seconds. The 10 groups of data are processed through data transmission to obtain 10 synchronization strategies, which are respectively applied to the signals in the data window with a time length of 60 seconds in the corresponding interval.

[0067] Optionally, at least one synchronization effect evaluation index is calculated according to each third modulation signal, and a target signal synchronization strategy is determined from the plurality of signal synchronization strategies according to the synchronization effect evaluation index. This can include: demodulating the multi-path load-bearing vector signal corresponding to each signal synchronization strategy from each third modulation signal, calculating the signal-to-noise ratio, the root mean square difference of the vectoring signal, and the correlation coefficient of the vectoring signal corresponding to each signal synchronization strategy according to the multi-path load-bearing vector signal corresponding to each signal synchronization strategy, and determining the target signal synchronization strategy from the plurality of signal synchronization strategies according to the signal-to-noise ratio, the root mean square difference of the vectoring signal, and the correlation coefficient of the vectoring signal corresponding to each signal synchronization strategy.

[0068] Specifically, the third modulation signals received from the optical modulator are demodulated to obtain the synchronized multi-path load direction vector signals corresponding to each signal synchronization strategy respectively, and the signal-to-noise ratio, the root mean square difference of the direction vector signal and the correlation coefficient of the direction vector signal corresponding to each signal synchronization strategy are calculated and compared, and the signal synchronization strategy with the best signal effect evaluation index is determined as the target signal synchronization strategy among the optional multiple signal synchronization strategies. Among them, the signal synchronization strategy with the least noise signal influence can be screened out through the signal-to-noise ratio, the error between the estimated value and the actual value of the direction vector signal can be analyzed through the root mean square difference, the signal synchronization strategy with low synchronization accuracy error can be screened out, and the correlation coefficient can be used to evaluate the synchronization between voltage, current and power, so that the frequency, amplitude and phase of the power system can be more accurately estimated, and the stable and reliable synchronization strategy can be screened out.

[0069] The embodiment of the present application provides a kind of substation with load direction vector information synchronization method provided by the present application, obtain the multiple first modulation signals modulated and sent via optical modulator, wherein multiple first modulation signals are the multiple-way load direction vector signal that optical modulator is based on data sensor in multiple time periods respectively from the secondary circuit of substation low voltage side acquisition obtains, after being modulated to high-speed baseband signal, it is obtained, using high-speed baseband signal modulation technique, ensure the efficient transmission of signal in the secondary circuit of substation low voltage side, improve the real-time and accuracy of power system monitoring and control, provide strong data support for the stable operation and fault diagnosis of power grid, then, according to multiple first modulation signals, determine multiple signal synchronization strategies, and each signal synchronization strategy is sent to optical modulator, so that optical modulator modulates each signal synchronization strategy to obtain multiple second modulation signals and is sent to secondary circuit to carry out high-speed signal synchronization under multiple signal synchronization strategies, the synchronization strategy of load direction vector signal corresponding to line state is established by multiple sets of modulation signals respectively, not only provides a wide range of options for the formulation and screening of final target signal synchronization strategy, but also significantly improves the adaptability, accuracy and execution rate of synchronization process, using high-speed baseband signal modulation technique, the transmission mechanism of signal synchronization strategy is optimized, ensure the rapid and efficient of data transmission process, and also enhance the overall efficiency of synchronization operation, then obtain multiple third modulation signals modulated and sent via optical modulation module, wherein multiple third modulation signals are the multiple-way load direction vector signal that optical modulator is based on data sensor again from secondary circuit acquisition after signal synchronization under each signal synchronization strategy, after being modulated to high-speed baseband signal, at least one synchronization effect evaluation index is calculated according to each third modulation signal, and target signal synchronization strategy is determined in multiple signal synchronization strategies according to each synchronization effect evaluation index, through high-speed baseband signal modulation technology, the rapid transmission of load direction vector signal collected after synchronization is realized, and the optimal scheme is selected from multiple synchronization strategies based on preset evaluation standard, to enhance the flexibility, accuracy and efficiency of synchronization process, the technical scheme can realize load direction vector information synchronization in the case of new equipment commissioning, equipment change recovery power transmission or in the case of unstable power system, ensure the efficient execution of fully automated process from signal acquisition to target synchronization scheme, high-speed baseband signal modulation technology optimizes the transmission of synchronization strategy, ensures the speed and efficiency of data transmission, improves the overall performance of synchronization operation, improves the precision and reliability of substation load direction vector information synchronization.

[0070] Embodiment three

[0071] Figure 3 The structure diagram of a substation load direction vector information synchronization device provided by the embodiment three of the present application is shown in the figure. Figure 3As shown, the apparatus specifically comprises: a first modulation signal acquisition module 310, a synchronization strategy sending module 320, a third modulation signal acquisition module 330, and a target signal synchronization strategy determination module 340.

[0072] The first modulation signal acquisition module 310 is configured to acquire a plurality of first modulation signals modulated and sent by the optical modulator, wherein the plurality of first modulation signals are a plurality of multi-channel load measurement vector signals collected by the optical modulator from the secondary circuit of the low-voltage side of the substation at a plurality of time periods based on the data sensor, and are obtained after the high-speed baseband signal is modulated.

[0073] The synchronization strategy sending module 320 is configured to determine a plurality of signal synchronization strategies according to the plurality of first modulation signals, and send each signal synchronization strategy to the optical modulator, so that the optical modulator modulates each signal synchronization strategy to obtain a plurality of second modulation signals and sends the plurality of second modulation signals to the secondary circuit to perform high-speed signal synchronization under the plurality of signal synchronization strategies.

[0074] The third modulation signal acquisition module 330 is configured to acquire a plurality of third modulation signals modulated and sent by the optical modulation module, wherein the plurality of third modulation signals are a plurality of multi-channel load measurement vector signals collected by the optical modulator from the secondary circuit after the signal synchronization under each signal synchronization strategy is completed, and are obtained after the high-speed baseband signal is modulated.

[0075] The target signal synchronization strategy determination module 340 is configured to calculate at least one synchronization effect evaluation index according to each third modulation signal, and determine a target signal synchronization strategy from the plurality of signal synchronization strategies according to each synchronization effect evaluation index.

[0076] The technical scheme of the embodiment of the present application comprises the following steps: obtaining a plurality of first modulation signals modulated and transmitted by an optical modulator, wherein the plurality of first modulation signals are obtained by the optical modulator based on a plurality of time periods of a data sensor collecting a plurality of load measurement vector signals from a secondary circuit of a low-voltage side of a transformer substation, and the plurality of load measurement vector signals are obtained by modulating a high-speed baseband signal; then, a plurality of signal synchronization strategies are determined according to the plurality of first modulation signals, and each signal synchronization strategy is transmitted to the optical modulator, so that the optical modulator modulates each signal synchronization strategy to obtain a plurality of second modulation signals, and the plurality of second modulation signals are transmitted to the secondary circuit to perform high-speed signal synchronization under the plurality of signal synchronization strategies, a plurality of synchronization strategies of the load measurement vector signals are determined by using a plurality of sets of modulation signals, the selection range of the formulation and screening of the target signal synchronization strategy is widened, the adaptability, accuracy and speed of the synchronization process are improved, the transmission mechanism of the signal synchronization strategy is optimized by the high-speed baseband signal modulation technology, the speed and efficiency of data transmission are ensured, and thus the performance of the synchronization operation is improved as a whole; then, a plurality of third modulation signals modulated and transmitted by the optical modulation module are obtained, wherein the plurality of third modulation signals are obtained by the optical modulator based on the data sensor collecting a plurality of load measurement vector signals corresponding to each signal synchronization strategy again from the secondary circuit after the signal synchronization under each signal synchronization strategy is completed, and the plurality of load measurement vector signals are obtained by modulating the high-speed baseband signal; at least one synchronization effect evaluation index is calculated according to each third modulation signal; the target signal synchronization strategy is determined in the plurality of signal synchronization strategies according to each synchronization effect evaluation index; and the optimal scheme is selected from the plurality of synchronization strategies based on a preset evaluation standard, so as to enhance the flexibility, accuracy and efficiency of the synchronization process. The technical scheme is applied to signal synchronization in new equipment commissioning, recovery power transmission after equipment modification or in an unstable power system, ensures efficient execution of the fully automated process, guarantees the speed and efficiency of data transmission, improves the overall performance of the synchronization operation, improves the precision and reliability of the load measurement vector information synchronization of the transformer substation.

[0077] On the basis of the above embodiments, the synchronization strategy sending module 320 is specifically configured to:

[0078] The plurality of load measurement vector signals corresponding to each time period are demodulated from the plurality of first modulation signals.

[0079] The plurality of load measurement vector signals corresponding to each time period are subjected to mutation point detection by calling a wavelet transform algorithm in the waveform processing module.

[0080] The plurality of signal synchronization strategies are determined according to the mutation time corresponding to each time period.

[0081] On the basis of the above embodiments, the target signal synchronization strategy determination module 340 is specifically configured to:

[0082] demodulating the plurality of load-bearing direction-finding vector signals corresponding to each signal synchronization strategy from the respective third modulation signals;

[0083] calculating the signal-to-noise ratio, the root mean square difference of the direction-finding vector signal and the correlation coefficient of the direction-finding vector signal corresponding to each signal synchronization strategy according to the plurality of load-bearing direction-finding vector signals corresponding to each signal synchronization strategy;

[0084] determining the target signal synchronization strategy from the plurality of signal synchronization strategies according to the signal-to-noise ratio, the root mean square difference of the direction-finding vector signal and the correlation coefficient of the direction-finding vector signal corresponding to each signal synchronization strategy.

[0085] The substation load-bearing direction-finding vector information synchronization device provided by the embodiments of the present application can perform the substation load-bearing direction-finding vector information synchronization method provided by any embodiment of the present application, and has the corresponding function modules and beneficial effects of the execution method.

[0086] In the technical solutions of the present disclosure, the collection, storage, use, processing, transmission, provision and disclosure of user personal information comply with relevant laws and regulations and do not violate public order and good customs.

[0087] Embodiment Four

[0088] Figure 4 is a schematic diagram of a specific application scenario applicable to the embodiments of the present application. In this specific application scenario, in order to improve the efficiency, accuracy and reliability of the substation load-bearing direction-finding vector information synchronization, the substation load-bearing direction-finding vector information synchronization system is designed by each embodiment of the present application, and the target synchronization scheme is obtained by collecting and processing the direction-finding vector of the low-voltage side secondary circuit of the substation.

[0089] Correspondingly, as shown in Figure 4 , the substation load-bearing direction-finding vector information synchronization system provides energy for the entire synchronization system through a driving power supply, realizes load-bearing direction-finding vector collection of the low-voltage side secondary circuit of the substation through a data sensor, realizes electrical isolation through an optical coupling isolation module, protects the substation load-bearing direction-finding vector information synchronization system, prevents the influence of high voltage or current on low voltage or sensitive circuit parts, thereby protecting the circuit and equipment from damage, modulates the load-bearing direction-finding vector information based on the high-speed optical communication baseband through an optical modulator, realizes high-speed transmission of the load-bearing direction-finding vector information and rapid synchronization of the synchronization strategy, realizes demodulation of the modulation signal, generation of the synchronization strategy and acquisition of the target synchronization strategy through a chip system based on FPGA, realizes analysis of the load-bearing direction-finding vector signal and detection of the signal mutation point through a waveform processing module, realizes interactive operation with the user end through a wireless communication and key input module, such as printing the detection report, viewing the recorded waveform, fine-tuning the control parameters, etc.

[0090] Further, the substation with load measurement vector information synchronization method is described as follows:

[0091] (1) Collecting voltage and current on the circuit by voltage and current sensors;

[0092] (2) Using spatial high-speed optical communication baseband modulation to transfer load measurement vector signals;

[0093] (3) Selecting wavelet transform to detect signal mutation points;

[0094] (4) Taking mutation time as a time reference to synchronize signals, correcting the data window of each current loop measurement vector branch device, and realizing signal synchronization;

[0095] (5) Comparing and analyzing the processing results through signal-to-noise ratio, root mean square difference and correlation coefficient;

[0096] (6) Obtaining a substation with load measurement vector information synchronization scheme.

[0097] In the specific application scenarios provided by the embodiments of the present application, the load measurement vector information synchronization method is used to realize information synchronization in the following situations: new equipment is put into operation in the substation, the current secondary circuit of the equipment is changed, or the substation is in an unstable and fluctuating power system. The following beneficial effects can be achieved:

[0098] (1) The design is simple, can support higher speed, and the phase synchronization accuracy is less affected by hardware, which is more conducive to the generation of high-precision baseband signals.

[0099] (2) The whole process automation is realized from the collection of load measurement vector information to the determination of the final synchronization strategy, which saves labor cost and time cost.

[0100] (3) Based on high-speed optical communication baseband, high-speed transmission and synchronization of load measurement vector information are realized, and the synchronization efficiency of load measurement vector information is improved.

[0101] (4) The synchronization strategy is optimized through signal effect evaluation indexes, which ensures the synchronization effect of the synchronization strategy and improves the synchronization accuracy and reliability of the load measurement vector information.

[0102] Example Five

[0103] Figure 5A structural diagram of an electronic device 10 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital assistants, cellular telephones, smartphones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown here, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit the implementations of the present application described and / or claimed in this document.

[0104] As shown, Figure 5 The electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., connected in communication with the at least one processor 11, where the memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer programs stored in the read-only memory (ROM) 12 or loaded into the random access memory (RAM) 13 from the storage unit 18. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0105] A plurality of components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc., an output unit 17, such as various types of displays, speakers, etc., a storage unit 18, such as a magnetic disk, an optical disk, etc., and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0106] The processor 11 can be various general and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs various methods and processes described above, such as the substation on-load tap changer information synchronization method.

[0107] That is,

[0108] The multiple first modulation signals are acquired via the optical modulator and transmitted; wherein the multiple first modulation signals are multiple channel load measurement vector signals acquired by the optical modulator based on the data sensor at the secondary circuit of the low-voltage side of the transformer substation at multiple time periods, and obtained after the high-speed baseband signal is modulated; multiple signal synchronization strategies are determined according to the multiple first modulation signals, and each signal synchronization strategy is transmitted to the optical modulator, so that the optical modulator modulates each signal synchronization strategy to obtain multiple second modulation signals, and transmits the multiple second modulation signals to the secondary circuit to perform high-speed signal synchronization under the multiple signal synchronization strategies; the multiple third modulation signals are acquired via the optical modulation module and transmitted; wherein the multiple third modulation signals are multiple channel load measurement vector signals acquired by the optical modulator based on the data sensor after signal synchronization under each signal synchronization strategy is completed, and obtained after the high-speed baseband signal is modulated; at least one synchronization effect evaluation index is calculated according to each third modulation signal, and a target signal synchronization strategy is determined from the multiple signal synchronization strategies according to the synchronization effect evaluation indexes.

[0109] In some embodiments, the transformer substation load measurement vector information synchronization method can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the above-described transformer substation load measurement vector information synchronization method can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the transformer substation load measurement vector information synchronization method by any other appropriate means, such as by means of firmware.

[0110] The various implementations of the systems and techniques described above can be realized in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a programmable logic device (PLD), a computer hardware, firmware, software, and / or combinations thereof. These various implementations can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0111] Computer programs for implementing the methods of the present application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer program, when executed, can cause instructions defined in the flow charts and / or block diagrams to be implemented. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as a stand-alone software package and partially on a remote machine or entirely on a remote machine or server.

[0112] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer-readable storage medium can include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of a machine-readable storage medium will include one or more lines of a program of instructions in a transitory signal, a portable computer diskette, 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 disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0113] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0114] The systems and techniques described herein can be implemented in a computing system that includes a back end component, e.g., as a data server, or that includes a middleware component, e.g., an application server, or that includes a front end component, e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described herein, or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication, e.g., a communication network. Examples of communication networks include a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0115] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0116] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the scope of the present disclosure. For example, the steps recited in the present disclosure can be executed in parallel, executed in series, or executed in different orders, as long as the desired results of the technical solutions of the present disclosure can be achieved, and the present disclosure is not limited herein.

[0117] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A substation load-based vector information synchronization system, characterized in that, include: The data sensor, optical modulator, and chip system are located close to the secondary circuit on the low-voltage side of the substation. The data sensor is used to collect multiple load-bearing vector signals from the secondary circuit on the low-voltage side of the substation at multiple time periods and send them to the optical modulator. The optical modulator is used to modulate the high-speed baseband signal with multiple voltage and current signals in each time period to obtain a first modulation signal corresponding to each time period and send it to the chip system. The chip system is used to determine multiple signal synchronization strategies based on each of the first modulation signals and send them to the optical modulator; The optical modulator is also used to modulate the high-speed baseband signal using various signal synchronization strategies to obtain multiple second modulation signals, and to send the multiple second modulation signals to the secondary circuit respectively for high-speed signal synchronization under multiple signal synchronization strategies. The data sensor is also used to collect multiple load-bearing vector signals corresponding to each signal synchronization strategy from the secondary circuit after signal synchronization is completed under each signal synchronization strategy, and send them to the optical modulator. The optical modulator is also used to modulate the high-speed baseband signal using a multi-path load measurement vector signal corresponding to each signal synchronization strategy, and send the resulting third modulation signal corresponding to each signal synchronization strategy to the chip system. The chip system is also used to calculate at least one synchronization effect evaluation index based on each third modulation signal, and to determine the target signal synchronization strategy among multiple signal synchronization strategies based on each synchronization effect evaluation index.

2. The system according to claim 1, characterized in that, The system further includes: an optical isolation module, which is connected to the optical modulator; The optical isolation module is used to electrically isolate the optical modulator to provide safety protection for the optical modulator.

3. The system according to claim 1, characterized in that, The system further includes a waveform processing module, which is connected to the chip system. The waveform processing module is used to implement the computational logic of the wavelet transform algorithm; The chip system is further configured to: demodulate each of the first modulation signals to obtain multiple load-bearing vector signals corresponding to each time period, and perform abrupt change detection on the multiple load-bearing vector signals corresponding to each time period by calling the wavelet transform algorithm in the waveform processing module; and determine multiple signal synchronization strategies based on the abrupt change time corresponding to each time period.

4. The system according to claim 3, characterized in that, The system further includes: a wireless communication module; the wireless communication module is connected to the chip system; The wireless communication module is used to establish a communication connection between the system and the user terminal device; The chip system is also used to: demodulate at least one of the following from each of the first modulation signals, which are respectively a multi-channel load measurement vector signal corresponding to each time period, a sudden change moment corresponding to each time period, and a signal synchronization strategy, and send it to the user terminal device for real-time user display.

5. The system according to any one of claims 1-4, characterized in that, The chip system is also used for: A high-speed baseband signal based on space optical communication is generated for use by the optical modulator for signal modulation.

6. A method for synchronizing vector information under load in a substation, characterized in that, The method, executed by the chip system in the substation load measurement vector information synchronization system as described in any one of claims 1-5, comprises: Acquire multiple first modulated signals that are modulated and transmitted via an optical modulator; The plurality of first modulation signals are obtained by an optical modulator modulating a high-speed baseband signal after the optical modulator collects multiple load-bearing vector signals from the secondary circuit of the low-voltage side of the substation at multiple time periods based on data sensors. Based on the multiple first modulation signals, multiple signal synchronization strategies are determined, and each signal synchronization strategy is sent to the optical modulator so that the optical modulator modulates each signal synchronization strategy to obtain multiple second modulation signals and sends them to the secondary loop to perform high-speed signal synchronization under multiple signal synchronization strategies. Acquire multiple third-modulation signals that are modulated and transmitted via the optical modulation module; Among them, multiple third modulation signals are obtained by the optical modulator after the signal synchronization of each signal synchronization strategy is completed by the data sensor and then the high-speed baseband signal is modulated by the multi-channel load measurement vector signal corresponding to each signal synchronization strategy. Calculate at least one synchronization effect evaluation index based on each third modulation signal, and determine the target signal synchronization strategy among multiple signal synchronization strategies based on each synchronization effect evaluation index.

7. The method according to claim 6, characterized in that, Based on the plurality of first modulation signals, a plurality of signal synchronization strategies are determined, including: Demodulate each of the first modulation signals to obtain a multi-channel load measurement vector signal corresponding to each time period; By calling the wavelet transform algorithm in the waveform processing module, abrupt change points are detected in the multi-channel loaded vector signals corresponding to each time period. Based on the abrupt change time corresponding to each time period, multiple signal synchronization strategies are determined.

8. The method according to claim 6, characterized in that, Calculate at least one synchronization effect evaluation index for each third modulation signal, and determine the target signal synchronization strategy among multiple signal synchronization strategies based on each synchronization effect evaluation index, including: Demodulate each of the third modulation signals to obtain a multi-path load measurement vector signal corresponding to the synchronization strategy of each signal; Based on the multi-channel load-bearing vector signals corresponding to each signal synchronization strategy, calculate the signal-to-noise ratio, root mean square error of the vector signals, and correlation coefficient of the vector signals corresponding to each signal synchronization strategy. Based on the signal-to-noise ratio, root mean square error of the measurement vector signal, and correlation coefficient of the measurement vector signal corresponding to each signal synchronization strategy, the target signal synchronization strategy is determined among multiple signal synchronization strategies.

9. A substation load-based vector information synchronization device, characterized in that, The device, configured in the chip system of the substation load measurement vector information synchronization system as described in any one of claims 1-5, comprises: The first modulation signal acquisition module is used to acquire multiple first modulation signals that are modulated and transmitted by an optical modulator; The plurality of first modulation signals are obtained by an optical modulator modulating a high-speed baseband signal after the optical modulator collects multiple load-bearing vector signals from the secondary circuit of the low-voltage side of the substation at multiple time periods based on data sensors. The synchronization strategy sending module is used to determine multiple signal synchronization strategies based on the multiple first modulation signals, and send each signal synchronization strategy to the optical modulator so that the optical modulator modulates each signal synchronization strategy to obtain multiple second modulation signals and sends them to the secondary loop to perform high-speed signal synchronization under multiple signal synchronization strategies. The third modulation signal acquisition module is used to acquire multiple third modulation signals that are modulated and transmitted by the optical modulation module; Among them, multiple third modulation signals are obtained by the optical modulator after the signal synchronization of each signal synchronization strategy is completed by the data sensor and then the high-speed baseband signal is modulated by the multi-channel load measurement vector signal corresponding to each signal synchronization strategy. The target signal synchronization strategy determination module is used to calculate at least one synchronization effect evaluation index based on each third modulation signal, and determine the target signal synchronization strategy among multiple signal synchronization strategies based on each synchronization effect evaluation index.

10. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the substation load measurement vector information synchronization method according to any one of claims 6-8.

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