Power line carrier communication method, system, equipment and medium

Abstract

The invention relates to a power line carrier communication method, system, device and medium, and belongs to the technical field of communication method.The method comprises the steps that actual operation parameter sets of all target power equipment are obtained, and the communication quality of a preset initial communication link between the current target power equipment and the target power equipment is detected according to the actual operation parameter sets; communication quality judgment is obtained; judging based on the communication quality to obtain a detection result; when the detection result is that communication is interfered by high noise, triggering a link updating mechanism to construct a new communication link to obtain an updated link; and setting the updated link to a first priority, and setting the initial communication link to a second priority. The method and the device have the effect of improving the flexibility and the stability of communication between the devices under the condition that high noise interference exists in the initial communication link.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a power line carrier communication method, system, device and medium. Background Art

[0002] Power line carrier communication technology is widely used in smart grids. It transmits data signals through power lines to achieve real-time monitoring and control, greatly improving the operating efficiency of power systems. However, traditional power line carrier communication technology has many problems in complex power grid environments.

[0003] In a complex power grid environment, noise interference becomes a key factor affecting the quality and stability of power carrier communication. On the one hand, the characteristics of the power line itself and the operation of electrical equipment will generate various noises, such as corona discharge, pulse noise, etc. These noises will interfere with the power carrier signal, causing signal transmission distortion and increased bit error rate; on the other hand, different power line network structures, load conditions and environmental factors will make the distribution and characteristics of noise complicated.

[0004] Currently, power carrier communication mainly uses narrowband modulation technology for data transmission. This technology has weak anti-interference ability in complex power grid environments, especially in high-noise environments. The attenuation and distortion of the transmission signal in this communication method are more obvious, and the bit error rate of data transmission is high, which seriously affects the reliability and efficiency of communication. Summary of the invention

[0005] In order to effectively improve the reliability and efficiency of a power line carrier communication method, the present application provides a power line carrier communication method, system, device and medium.

[0006] In a first aspect, the present application provides a power line carrier communication method, which adopts the following technical solution: A power carrier communication method, comprising: Acquire the actual operating parameter group of all target power devices, and detect the communication quality of the initial communication link preset between the current target power devices according to the actual operating parameter group to obtain a communication quality judgment; Obtaining a detection result based on the communication quality judgment, the detection result including whether the communication is subject to high noise interference and whether the communication is normal; When the detection result is that the communication is interfered by high noise, triggering a link update mechanism to build a new communication link to obtain an updated link; placing the update link at a first priority and placing the initial communication link at a second priority; The triggering link update mechanism to build a new communication link to obtain the updated link includes: The communication link corresponding to the detection result that the communication is subject to high noise interference is used as a link to be replaced, the target power device at the starting end of the link to be replaced is used as an initial node, and the power device at the terminating end of the link to be replaced is used as a terminating node; According to the current initial node, the termination node and other nodes connected to the initial node, the update sub-links are determined one by one in the communication order, and the update link is determined based on all the update sub-links. Each of the nodes represents an electric power device that is in an turned-on state in the communication link where the initial node is located, and the update link is a communication link formed by connecting all the update sub-links in sequence.

[0007] By adopting the above technical solution, it is possible to flexibly and effectively deal with problems that may arise in the communication link due to interference such as high noise during the power carrier communication process; first, the quality of the initial communication link is detected based on the actual operating parameter group of the target power equipment, and the impact of the communication state under interference is accurately determined; once a communication abnormality is found, especially when it is interfered by high noise, the link update mechanism is triggered in time to build a new link to ensure that subsequent information exchange is not hindered, and the update link is set as the first priority in time to give priority to its use, which can maintain communication stability to the greatest extent and ensure real-time monitoring of power equipment and the issuance of control instructions, while the initial communication link is listed as the second priority and can continue to function after it is repaired to normal, thereby improving the reliability and adaptability of the entire power carrier communication system.

[0008] In a specific implementation scheme, the step of determining the update sub-links one by one according to the communication order based on the current initial node, the termination node, and other nodes connected to the initial node, and determining the update link based on all the update sub-links includes: Select one of the other nodes connected to the initial node as the intermediate node of this round; Obtain a preparation link for this round according to the intermediate node for this round, wherein the preparation link is a communication link connecting the intermediate node and the initial node; Performing wireless network quality detection on the preparation link to obtain a wireless network quality judgment, wherein the wireless network quality judgment includes whether the wireless network meets the communication condition and whether the wireless network does not meet the communication condition; If the wireless network quality is judged as the wireless network not meeting the communication condition, the wired network quality detection is performed again on the preparation link to obtain the wired network quality judgment, wherein the wired network quality judgment includes whether the power transmission line meets the communication condition and whether the power transmission line does not meet the communication condition; If the wireless network quality is judged to be that the wireless network meets the communication conditions, the preparation link is directly used as an update sub-link, and the intermediate node of this round is used as the starting node of the next round, and then one of the other nodes connected to the initial node of the next round is selected as the intermediate node of the next round; If the wired network quality is judged as the transmission line not meeting the communication condition, then the preparation link of this round is excluded and the process returns to the step of selecting one of the other nodes connected to the initial node as the intermediate node of this round until a new update sub-link is obtained; Repeat multiple rounds of operations until all the starting nodes obtained meet the update condition, then end the operation and obtain the update link based on all the updated sub-links. The update condition means that the other end node of the last updated sub-link obtained, except the intermediate node, is the terminating node.

[0009] By adopting the above technical solution, through multiple rounds of iterations, an update link that meets the communication needs is gradually constructed, and in each round of operation, the intermediate nodes are continuously optimized and adjusted to obtain the link connection method with the best communication quality, which greatly avoids link interruption or data transmission problems caused by poor communication quality, so that the update link can adapt to complex communication environments and effectively solve problems caused by communication anomalies; when an abnormality occurs in the communication link, a new link can be quickly constructed to ensure smooth communication between power equipment and improve the operating efficiency and stability of power equipment.

[0010] In a specific possible implementation scheme, if the current update link cannot bear the current communication load, a new update link is obtained by triggering the link update mechanism again to achieve load sharing.

[0011] In a specific possible implementation scheme, the detecting the current communication connection with the target power equipment according to the actual operation parameter group to obtain the communication quality judgment includes: Periodically sending a communication verification signal to the target power device through the initial communication link, each period being a verification period, and the verification period includes a plurality of verification sub-periods; receiving all actual operating parameter groups sent by the target power equipment in response to the communication verification signal; When the actual operating parameter group of each of the verification sub-periods is received, the real-time packet loss rate of the actual operating parameter group corresponding to the verification sub-period is calculated, and the communication quality judgment is obtained based on the real-time packet loss rate and the preset maximum packet loss rate threshold and the preset standard packet loss rate threshold. The communication quality judgment includes relatively stable communication, certain fluctuations in communication, and poor communication quality.

[0012] In a specific implementation scheme, obtaining a detection result based on the communication quality judgment includes: When the communication quality is judged to be relatively stable or to have certain fluctuations, a first evaluation result corresponding to the target power equipment is obtained according to each of the actual operation parameter groups and a preset standard parameter range corresponding to each parameter in the actual operation parameter group, wherein the first evaluation result includes whether the equipment is operating normally or whether there is an abnormal risk in the equipment operation; The actual operation parameter group corresponding to the first assessment result that the equipment operation has an abnormal risk is used as the abnormal operation parameter group; When the first evaluation result is that there is an abnormal risk in the operation of the equipment, a second evaluation result is obtained according to the continuous change of each parameter in the abnormal operation parameter group in all the verification sub-periods, the continuous change is reflected by calculating the data fluctuation comprehensive index of each parameter in the abnormal operation parameter group in multiple verification sub-periods, and the average value of each parameter in the abnormal operation parameter group in all the verification sub-periods, the data fluctuation comprehensive index is calculated according to each parameter in the abnormal operation parameter group and a preset standard index threshold value corresponding to each parameter, and the second evaluation result includes normal operation of the equipment, abnormal operation of the equipment and abnormal communication; A detection result is obtained based on the first evaluation result and the second evaluation result.

[0013] In a specific implementation scheme, obtaining a detection result based on the first evaluation result and the second evaluation result includes: Taking the average value of each parameter in the abnormal operation parameter group in all the syndrome sub-periods as the average operation parameter; When the data fluctuation comprehensive index is greater than or equal to the standard index threshold, the second evaluation result is communication abnormality; When the data fluctuation comprehensive index is less than the standard index threshold, and at least one of the average operating parameters exceeds the corresponding standard parameter range, the second evaluation result is that the equipment is operating abnormally; When the data fluctuation comprehensive index is less than the standard index threshold, and the average operating parameters are all within the corresponding standard parameter range, the second evaluation result is that the equipment is operating normally.

[0014] By adopting the above technical scheme, the quality of power carrier communication and the operating status of power equipment can be evaluated and judged in a multi-dimensional and refined manner: on the one hand, by periodically sending communication verification signals to the target power equipment and calculating the real-time packet loss rate based on the received actual operating parameter group, the communication quality is judged in combination with the preset threshold, and it is clearly distinguished whether the communication is relatively stable, has certain fluctuations or is of poor quality, so as to intuitively grasp the status of the communication link; on the other hand, for the case where the communication quality is acceptable, the actual operating parameter group is further compared with the standard parameter range to obtain the first evaluation result, and check whether there is any abnormal risk in the operation of the equipment; for the case where there is an abnormal risk, the second evaluation result is determined by analyzing the continuous changes of the parameters in the abnormal operating parameter group in each verification sub-period, and calculating the comprehensive index of data fluctuations, so as to accurately judge the actual operating status of the equipment; in this way, the detection result is obtained by combining the results of various aspects, which provides a reliable basis for taking targeted measures in the future to ensure smooth communication and stable operation of power equipment, and avoids the randomness of data fluctuations during sampling and verification.

[0015] In a specific implementation scheme, the calculation formula of the data fluctuation comprehensive index is as follows: ; ; in, Indicates a comprehensive index of data fluctuation corresponding to the abnormal operation parameter group; Indicates the total number of parameters in one of the abnormal operation parameter groups; Indicates the total number of check sub-periods; represents the total number of syndrome time periods; Indicates The first of the abnormal operation parameter groups corresponding to the first of the syndrome sub-periods parameters; Indicates The first of the abnormal operation parameter groups corresponding to the first of the syndrome sub-periods parameters; To judge the The syndrome period is compared with the The abnormal operation parameter group corresponding to the check sub-period The positive and negative growth of each parameter; Indicates the abnormal operation parameter group The weight parameter of the sum of the variances corresponding to the parameters in all the syndrome time periods.

[0016] By adopting the above technical solution, the formula comprehensively considers factors such as the total number of parameters in the abnormal operation parameter group, the specific values ​​of the parameters in different check sub-periods, and the positive and negative growth of the parameters, thereby effectively avoiding interference with the detection communication quality caused by small fluctuations in parameter values ​​within a reasonable range; the situation in which the parameter value rises slightly and then falls back, or falls slightly and then rises again is regarded as a normal operating state. This design can more accurately determine whether the device is truly in an abnormal state; considering that in actual communication scenarios, the parameter fluctuations of the equipment are often complex and diverse, the formula avoids misjudgment caused by simple variance superposition; through a unique calculation method, the fluctuations of the parameters within the normal range are effectively offset, thereby accurately identifying the real abnormal situation, making the detection results more accurate and reliable, and providing a reliable basis for the evaluation of communication quality; for example, during the operation of power equipment, fluctuations in certain parameters may be caused by normal system operation or environmental factors, not real faults or abnormalities.

[0017] In a second aspect, the present application provides a smart terminal, which adopts the following technical solution: A smart terminal, characterized in that it includes a memory and a processor, wherein the memory stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by the processor to implement a power carrier communication method as described in the first aspect.

[0018] In a third aspect, the present application provides a power line carrier communication system, which adopts the following technical solution: A power line carrier communication system, comprising: Power equipment, used to operate according to preset operating parameters; As described in the second aspect, the smart terminal is communicatively connected to the power equipment, and is used to obtain the actual operating parameter group of the power equipment in real time, and monitor the communication status between the power equipment and the power equipment according to the actual operating parameter group to obtain the detection result, and then adjust and optimize the communication between the power equipment and the power equipment according to the detection result.

[0019] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium, wherein at least one instruction, at least one program, code set or instruction set is stored in the computer-readable storage medium, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to implement a power carrier communication method as described in the first aspect.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. By acquiring the actual operating parameter group of the power equipment in real time, and detecting whether there is high noise interference in the communication link based on the communication quality judgment and the evaluation of the equipment operating parameters, communication quality problems can be discovered in time; at the same time, the link update mechanism is triggered when the communication is abnormal, and a new communication link is built and placed at the first priority, which can effectively deal with high noise interference, ensure stable and reliable communication, and improve the stability and reliability of equipment communication; 2. This method can adapt to different communication environments and operating conditions of power equipment. By flexibly adjusting the communication link according to the actual communication conditions between real-time devices, it improves the adaptability and flexibility of the system. When faced with complex communication scenarios and emergencies, it can quickly respond and solve problems to ensure the stable operation of the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of a power line carrier communication system according to an embodiment of the present application.

[0022] Figure 2 It is a flowchart of a power line carrier communication method according to another embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0024] The following is a further detailed description of an embodiment of a power line carrier communication method, system, device and medium of the present application in conjunction with the drawings of the specification.

[0025] An embodiment of the present application discloses a power line carrier communication system.

[0026] Reference Figure 1 A power carrier communication system includes several power equipment and intelligent terminals. The power equipment in this embodiment includes several power generation equipment, substation equipment and power consumption equipment. The power generation equipment and substation equipment, as well as the substation equipment and power consumption equipment are directly connected through transmission lines. The transmission lines in this embodiment adopt power line broadband communication technology, and use higher frequency signals (usually above 2MHz) to transmit data on the power line, so as to achieve a higher data transmission rate, which can meet the communication requirements with higher bandwidth requirements such as real-time monitoring and video transmission; the intelligent terminal and all power generation equipment, substation equipment and power consumption equipment are connected through wireless networks. At the same time, the intelligent terminal and each substation equipment are connected through wired communication through transmission lines.

[0027] It should be noted that, in this embodiment, one power generation device in the power generation area is usually connected to multiple substations. For example, a large thermal power plant is usually equipped with multiple step-up substations to step up the electric energy generated by the generator to different levels for long-distance transmission. At this time, the multiple substations in the power generation area are also used to send the stepped-up electric energy to different power supply areas through transmission lines, so as to achieve effective distribution and transmission of electric power. At the same time, multiple substations can serve as backup for each other to improve the reliability and stability of the power system. When a certain substation fails, other substations can share its load to ensure that the power of the power generation device can still be output normally. Next, the boosted electric energy is sent to a transformer device in the power supply area through the transmission line. At this time, the transformer device in the power supply area is used to step down or convert the voltage level of the boosted electric energy according to actual needs and transmit the processed electric energy to the power-consuming equipment to adapt to the different power supply ranges and voltage requirements of the power-consuming equipment in the power supply area; The connection between the substation and the power-consuming equipment is one-to-many, and the specific number depends on the capacity of the substation, the size of the power supply area, and the power load. For example, a substation serving a small community will be connected to various power-consuming equipment in hundreds of households and some small commercial power-consuming equipment in the community.

[0028] In the system, the intelligent terminal is used to obtain the actual operating parameter group of the power-consuming equipment, the power-generating equipment and the substation equipment in real time, and monitor and warn the communication between the corresponding power equipment according to the actual operating parameter group, obtain the monitoring results, and then adjust and optimize the communication between the power equipment according to the monitoring results; for example, the intelligent terminal will monitor the current, voltage, power and other parameters of the power-consuming equipment, the power generation power, operating temperature, fuel consumption and other parameters of the power-generating equipment, and the voltage, current, load and other conditions of the substation equipment in real time; by analyzing these parameters, the intelligent terminal can determine whether the communication of the equipment is in a normal operating state (that is, whether it is interfered by high noise and causes the operating parameters to be offset), and issue early warning information in time once an abnormal situation is found; the intelligent terminal is also used to generate corresponding control instructions according to the monitoring results or receive control instructions issued by the user after receiving the monitoring results, and send the control instructions to the corresponding equipment, and the control instructions carry specific operating parameters; Power generation equipment, such as thermal power generation, hydropower generation, wind power generation and other types of power generation devices, is used to adjust the power generation state according to specific operating parameters in the control instructions to generate electrical energy and transmit the electrical energy to the substation equipment; when the smart terminal detects that the power generation power of the power generation equipment is too high or too low, it will issue a control instruction to adjust the operating parameters of the power generation equipment, such as adjusting the fuel supply of thermal power generation equipment, the water flow speed of hydropower generation equipment or the blade angle of wind power generation equipment.

[0029] Substation equipment includes transformers, switchgear, etc., which are used to receive specific operating parameters in control instructions and perform corresponding operations based on the specific operating parameters; for example, the transformer can adjust the voltage level according to the control instructions, and the switchgear can control the on and off of the circuit according to the control instructions; when the smart terminal detects that the load of the substation equipment is too high, it will issue a control instruction to adjust the voltage level of the transformer, and at the same time control the switching action of the switchgear to ensure the stable operation of the power system.

[0030] Electrical equipment, such as factory production equipment and household appliances, is used to receive control instructions from smart terminals and perform corresponding operations according to the control instructions; When the smart terminal detects that the power consumption of the electrical equipment is too large or the electrical equipment fails, it will issue a control instruction to adjust the operating parameters of the electrical equipment, such as controlling the operating speed of factory production equipment, the working mode of household appliances, etc.; in this embodiment, the smart terminal is also used to monitor and manage the communication between each electrical equipment in real time to ensure that the control instructions can be accurately and timely transmitted to the electrical equipment, and the operating parameters fed back by the electrical equipment can be smoothly received. In this way, the smart terminal can effectively avoid electrical equipment failures and safety hazards caused by incorrect control instructions or untimely feedback of equipment operating parameters by ensuring smooth communication, and effectively ensure that the electrical equipment operates in a safe and stable state; the smart terminal includes a processor and a memory, the memory is used to store at least one instruction, at least one program, code set or instruction set; the processor executes the steps of the following method when running at least one instruction, at least one program, code set or instruction set.

[0031] The implementation of the method is described in detail below in conjunction with the above system: Reference Figure 2 Another embodiment of the present application provides a power carrier communication method, including: S100, obtaining actual operating parameter groups of all target power devices, and detecting the communication quality of the preset initial communication link between the current power device and the target power device according to the actual operating parameter groups to obtain a communication quality judgment; Among them, the power equipment includes power-consuming equipment, power-changing equipment and power-changing equipment. The target power equipment refers to a certain power equipment that needs to be used currently or is about to be used according to a predetermined schedule. The actual operation parameter group corresponds to each type of power equipment. For power generation equipment, the actual operation parameter group includes power generation voltage, power generation current and power generation load rate. For power changing equipment, the actual operation parameter group includes power changing voltage, power changing current and power changing load rate. For power-consuming equipment, the actual operation parameter group includes power consumption current, power consumption voltage and power consumption power. Specifically, in S100, the communication quality of the preset initial communication link between the current power device and the target power device is detected according to the actual operation parameter group, and the communication quality judgment includes: S110, periodically sending a communication verification signal to the target power equipment through a preset initial communication link; Among them, the initial communication link refers to the communication link used when the smart terminal communicates with a certain power equipment through a wireless network; specifically, this embodiment uses three minutes as a verification period, and each half minute in the verification period is a verification sub-period, that is, the smart terminal sends a verification instruction once every half minute in the preset verification period, and sends a total of six verification instructions to realize the detection of the communication connection between the smart terminal and the target power equipment.

[0032] S120, receiving all actual operating parameter groups sent by the target power equipment in response to the communication verification signal.

[0033] S130, when receiving the actual operation parameter group of each syndrome sub-period, calculating the real-time packet loss rate of the actual operation parameter group corresponding to the syndrome sub-period, and obtaining the communication quality judgment according to the real-time packet loss rate and the preset maximum packet loss rate threshold and the standard packet loss rate threshold; Among them, real-time packet loss rate = (the amount of data actually received in the actual operating parameter group - the amount of data in the preset ideal operating parameter group) / the amount of data in the ideal operating parameter group * 100%; the standard packet loss rate threshold of this embodiment takes 5% as an example, and the maximum packet loss rate threshold takes 8% as an example; the communication quality judgment includes relatively stable communication, certain fluctuations in communication, and poor communication quality; specifically: When the real-time packet loss rates corresponding to all check sub-periods are less than or equal to the standard packet loss rate threshold (5%), the communication quality is judged to be relatively stable; at this time, the data packets transmitted by the communication link are relatively complete, and data loss is relatively small, which can ensure normal communication between power equipment; When the number of inspection sub-periods whose corresponding real-time packet loss rate is greater than the standard packet loss rate threshold (5%) and less than or equal to the maximum packet loss rate threshold is less than 40% (i.e., less than or equal to 2) of the total number of inspection sub-periods (6 in this embodiment as an example), the communication quality is judged as having certain fluctuations in communication; this means that the communication link is subject to a certain degree of noise interference, and the loss of data packets is more obvious, which may affect the stability and reliability of communication; Otherwise, the communication quality is judged to be poor. At this time, it is judged that the communication link is seriously interfered by noise, data packets are seriously lost, communication cannot be carried out normally, and communication between power equipment is prone to abnormalities or even interruption.

[0034] After step S130, the method of this embodiment further includes: S140, when the communication quality is judged to be relatively stable or there is a certain fluctuation in the communication, all the received actual operation parameter groups are regarded as valid data, and a first evaluation result corresponding to the target power equipment is obtained according to each actual operation parameter group and a preset standard parameter range corresponding to each parameter in the actual operation parameter group; Among them, the first evaluation result includes whether the equipment is operating normally and whether there is an abnormal risk in the equipment operation; the smart terminal pre-stores a number of standard parameter ranges corresponding to the normal operation of the power equipment. In this step, the smart terminal will compare each parameter in the actual operation parameter group with the corresponding standard parameter range one by one. For example, for the power generation voltage of the power generation equipment, the corresponding standard parameter range is 380V±5V, for the power generation voltage of the power generation equipment, the corresponding standard parameter range is 0-50A, and for the power generation load rate of the power generation equipment, the corresponding standard parameter range is 0-80%. When each parameter in the received actual operation parameter group is within the corresponding standard parameter range, the actual operation parameter group is regarded as a normal operation parameter group. At this time, the first evaluation result is that the equipment is operating normally; if there is at least one parameter in the actual operation parameter group that exceeds the corresponding standard parameter range, the actual operation parameter group is regarded as an abnormal operation parameter group. At this time, the first evaluation result is that there is an abnormal risk in the equipment operation.

[0035] It should be noted that the risk of abnormal operation of the equipment in S140 means that the actual operating parameters of the target power equipment obtained do not meet the normal operating standards, which does not necessarily mean that the operation of the equipment itself is abnormal. It may also be that the actual operating parameter group transmitted has data confusion, loss, etc. under interference such as noise. In order to distinguish the above two situations (the equipment itself is abnormal and the communication is interfered by high noise), this embodiment takes the following measures: S150, when the first evaluation result is that there is an abnormal risk in the operation of the equipment, a second evaluation result is obtained according to the continuous change of each parameter in the abnormal operation parameter group in all the syndrome sub-periods; The second evaluation result includes normal operation of the device, abnormal operation of the device, and abnormal communication. In this embodiment, the continuous change is represented by a comprehensive index of data fluctuation of the parameter in multiple syndrome sub-periods. Specifically, the calculation formula of the comprehensive index of data fluctuation is as follows: ; ; in, Indicates a comprehensive index of data fluctuation corresponding to the abnormal operation parameter group; Indicates the total number of parameters in one of the abnormal operation parameter groups; Indicates the abnormal operation parameter group. parameters, and the parameters in the actual operation parameter group of each type of target power equipment in this embodiment are arranged in order; Indicates the total number of syndrome time periods, and this embodiment takes 6 as an example; Indicates check sub-period; Indicates The first parameters; Indicates The first parameters; To judge the Compared with the check sub-period The abnormal operation parameter group corresponding to the check sub-period The positive and negative growth of the parameter. When the value is positive, it means that the parameter in the next check sub-period is higher than the corresponding parameter in the previous check sub-period, otherwise it is lower; Indicates the abnormal operation parameter group. The weight parameter of the sum of variances corresponding to the parameters in all syndrome periods; Specifically, S150 also includes: S151, obtaining a second evaluation result according to the data fluctuation comprehensive index and the average operation parameter; The average operation parameter refers to the average value of each parameter in the abnormal operation parameter group in all check sub-periods, which is used to reduce the impact of data errors caused by accidental interference in the transmission of individual parameters at a certain moment on the communication judgment of the entire check period (that is, the existing instantaneous interference is not regarded as a communication abnormality); specifically, S151 includes: S1511, when the data fluctuation comprehensive index is greater than or equal to the preset standard index threshold, the second evaluation result is communication abnormality; When the data fluctuation comprehensive index is less than the preset standard index threshold, and at least one average operating parameter exceeds the corresponding standard parameter range, the second evaluation result is that the equipment is operating abnormally; When the comprehensive index of data fluctuation is less than the preset standard index threshold and the average operating parameters are all within the corresponding standard parameter range, the second evaluation result is that the equipment is operating normally.

[0036] It should be noted that in S150 of this embodiment, the situation where the parameter value rises slightly and then falls back, or falls slightly and then rises again, is regarded as a small fluctuation of the parameter within the normal range, which belongs to the normal operation of the equipment. Therefore, the calculation of the data fluctuation comprehensive index in this embodiment cannot adopt the variance superposition method, but is calculated by a specific formula: To offset as much as possible the impact of small fluctuations in parameter values ​​within a reasonable range on the detection communication quality.

[0037] S200, obtaining a detection result based on communication quality judgment; The detection result includes whether the communication is interfered by high noise or whether the communication is normal. Specifically, S200 includes: S210, if the communication quality is judged to be poor, or the second evaluation result is that the communication is abnormal, obtaining a detection result that the communication is interfered by high noise; Otherwise, a detection result indicating that the communication is normal is obtained; Among them, if the second evaluation result is that the equipment is operating abnormally, it is directly regarded as that the equipment itself is abnormal. At this time, the equipment abnormality alarm is triggered to remind the staff to issue control instructions to adjust the operating parameters of the equipment; when the communication quality is judged to be poor or the second evaluation result is communication abnormality (that is, due to interference such as noise in transmission, the operating parameters obtained each time have different degrees of deviation), it means that the communication link has been subject to extremely serious noise interference or there are other factors that seriously affect communication. For example, the real-time packet loss rate continues to exceed the maximum packet loss rate threshold (8%), and a large number of data packets are lost, which makes it impossible for power equipment to effectively exchange data, seriously affecting the normal realization of communication functions. In this case, the operating status of the power equipment is basically difficult to ensure stability. It is necessary to promptly notify the staff to check the fault points of the communication link and related equipment, and take measures such as replacing communication modules, repairing lines, and repairing faulty equipment to restore normal communication. Therefore, at this time, no subsequent evaluation of the actual operating parameter group of the target power equipment is performed, and it is directly determined to be a communication abnormality.

[0038] S300, when the detection result is that the communication is interfered by high noise, triggering a link update mechanism to build a new communication link to obtain an updated link; Specifically, S300 includes: S310, taking the communication link corresponding to the detection result that the communication is subject to high noise interference as a link to be replaced, taking the target power device at the starting end of the link to be replaced as an initial node, and taking the power device at the terminating end of the link to be replaced as a terminating node.

[0039] S320, determining an update link according to a current initial node and other nodes connected to the initial node; In this embodiment, the power devices are connected by wires through transmission lines, and each node represents a power device in an open state in the communication link; specifically, S320 includes: S321, select one of the other nodes connected to the initial node as the intermediate node of this round; Among them, the intermediate node is mainly used as a process node on a communication branch road, that is, the communication distance of the update link and the link to be replaced is different from the stage from the initial node to the intermediate node (only the initial node is the same).

[0040] S322, obtaining a preparation link of this round according to the intermediate node of this round; The preparation link is a communication link between the intermediate node and the initial node.

[0041] S323, performing wireless network quality detection on the prepared link to obtain a wireless network quality judgment; The wireless network quality detection work in S323 is mainly completed by a power device represented by the intermediate node and a power device represented by the other end node (i.e., the initial node) of the prepared link; specifically, the wireless network quality detection includes: The power equipment representing the intermediate node sends a test data packet to the power equipment of another node through the wireless network of the currently prepared link, and the power equipment of the other node obtains the packet loss rate of the current communication based on the actually received test data packet and the preset standard data packet, and then judges whether the wireless network meets the communication conditions based on the packet loss rate. This is the existing technology and will not be repeated here; the wireless network quality judgment includes whether the wireless network meets the communication conditions (that is, the packet loss rate is less than or equal to the preset standard threshold) and the wireless network does not meet the communication conditions (that is, the packet loss rate is greater than the standard threshold).

[0042] S324, if the wireless network quality determines that the preparation link meets the communication conditions, the preparation link is used as an update sub-link, and the node at the end of the update sub-link is used as the starting node of the next round, and then one of the other nodes connected to the initial node of the next round is selected as the intermediate node of the next round; If the wireless network quality is judged to be that the preparation link does not meet the communication conditions, the wired network quality detection is performed again on the preparation link to obtain the wired network quality judgment; The wired network quality detection work in S324 is also completed by two power devices represented by the intermediate node and the other end node of the prepared link; specifically, the wired network quality detection includes: The power equipment representing the intermediate node sends a test data packet to the power equipment of another node through the transmission line, and the power equipment of the other node obtains the packet loss rate of the current communication based on the actual received test data packet and the standard data packet, and then judges whether the prepared link meets the communication conditions based on the packet loss rate; the wired network quality judgment includes the transmission line meeting the communication conditions (that is, the packet loss rate is less than or equal to the preset standard threshold) and the transmission line does not meet the communication conditions (that is, the packet loss rate is greater than the standard threshold).

[0043] S325, if the wired network quality is judged as the transmission line does not meet the communication conditions, then the preparation link of this round is eliminated and the process returns to S322 to obtain a new preparation link; If the wired network quality is judged as the transmission line meets the communication conditions, the preparation link is used as an update sub-link, and the node at the end of the update sub-link is used as the starting node of the next round, and then one of the other nodes connected to the initial node of the next round is selected as the intermediate node of the next round; S326, repeat multiple rounds of operations until the obtained update sub-link meets the update condition, then terminate the operation, and obtain the update link based on all the update sub-links; Among them, satisfying the update condition means that the other end node of the finally obtained update sub-link except the intermediate node is a termination node, that is, the first initial node (that is, the target power device) can achieve communication connection with the power device representing the termination node through all update sub-links; specifically, the update link obtained according to all update sub-links includes: The intermediate node of the previous update sub-link is directly used as the initial node of the next update sub-link, and a communication link formed by all the update sub-links connected in sequence is used as the update link.

[0044] S400, placing the update link at the first priority and the initial communication link at the second priority; Among them, in the daily operation of the target power equipment, the intelligent terminal preferentially obtains the actual operating parameter group of the target circuit equipment through the initial communication link. Only when the initial communication link is subject to high noise interference, resulting in communication abnormality, will the actual operating parameter group be obtained and related control instructions be issued through the reconstructed update link.

[0045] It should be noted that the reason why the update link is placed at the first priority is that once the initial communication link has a communication anomaly due to high noise interference, it means that the link can no longer guarantee stable and reliable data transmission under the current environment, and the real-time monitoring and precise control of the power equipment may be seriously affected. The update link is rebuilt, and it is often optimized and adjusted for the current unfavorable factors such as noise interference. During the construction process, the communication quality between each intermediate node has been ensured as much as possible (each update sub-link may adopt a different communication strategy, such as the previous update sub-link is transmitted through a wireless network between power equipment A and B, and the next update sub-link is transmitted through a transmission line between power equipment B and C), and each intermediate node can also perform multi-faceted processing on the actual operating parameter group after receiving it to further improve the accuracy and reliability of the data; for example, the intermediate node can filter the received data, use a professional digital filtering algorithm to filter out the noise components mixed in the actual operating parameter group, and restore data that is closer to the true value, avoiding subsequent equipment status misjudgment and unreasonable control instruction generation due to noise.

[0046] At the same time, the intermediate node can also perform data verification, such as cyclic redundancy check (CRC) to check whether there are errors in the data transmission process. If erroneous data is found, it can be corrected according to the corresponding error correction mechanism, or the sender can be requested to resend the data, so as to ensure that the actual operating parameter group finally received by the smart terminal is accurate, thus laying a solid foundation for accurately grasping the operating status of the power equipment and issuing correct and effective control instructions; In addition, the intermediate node can also optimize the data cache and forwarding. According to the real-time communication status of the network, it can reasonably arrange the data cache time and forwarding order to avoid packet loss caused by data congestion, and ensure that the data can be efficiently and smoothly transmitted from the target power equipment to the smart terminal. Even in a complex communication environment, it can maintain the communication stability of the update link to the maximum extent. This is also an important manifestation of the update link's advantages over the initial communication link in dealing with abnormal communication scenarios such as high noise interference. Therefore, putting it in the first priority is more conducive to ensuring the reliable operation of the entire power carrier communication system. Therefore, in this special scenario of communication anomaly, giving priority to enabling the update link can maximize the guarantee of smooth information exchange between the smart terminal and the target power equipment, restore the accurate acquisition of equipment operating parameters and the effective issuance of control instructions as soon as possible, ensure that the power equipment can continue to operate stably, and avoid a series of problems such as unstable power supply and equipment failure caused by communication interruption or errors; and putting the initial communication link in the second priority does not mean that it is completely useless: in daily work, when there is no high noise interference and the communication condition is good, the initial communication link has been verified in practice to meet the conventional data transmission needs, and has formed a relatively mature communication mode and configuration through long-term stable operation; it is just that after the communication anomaly occurs, it is necessary to give priority to the update link to overcome the current communication obstacles, and wait for the subsequent detection, repair and optimization of the initial communication link. After the periodic verification work detects that the initial communication link has restored normal communication capabilities, it still needs to continue to undertake daily communication tasks and play its original role. Setting the priority in this way can flexibly respond to different communication conditions and ensure the efficient and reliable operation of the entire power carrier communication system.

[0047] It should be noted that, since the transmission line is not specially designed for communication, its communication capacity may be limited and cannot meet the large-scale, high-bandwidth communication requirements. When a large amount of data needs to be transmitted or high-speed communication is required, performance bottlenecks may occur. Therefore, the method of this embodiment also includes: If the current update link cannot bear the current communication load, a new update link is obtained by triggering the link update mechanism again to achieve load sharing; Among them, the inability of the update link to bear the current communication load means that the data that the current update link needs to transmit within a unit time reaches or exceeds the upper limit of the data volume that can be transmitted. At this time, problems such as data transmission delay and packet loss are prone to occur, affecting the communication quality. Specifically, in this embodiment, after a new update link is prepared, a part of the communication traffic needs to be directed from the update link that is currently unable to bear the load to the new update link. This can be achieved by adjusting the network routing protocol to reroute the data packets originally sent to the old link to the new link.

[0048] Based on the same inventive concept mentioned above, an embodiment of the present application also discloses an intelligent terminal, which includes a memory and a processor, wherein the memory stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by the processor to implement a power carrier communication method provided in the above method embodiment.

[0049] Based on the same inventive concept mentioned above, an embodiment of the present application also discloses a computer-readable storage medium, which stores at least one instruction, at least one program, code set or instruction set. The at least one instruction, at least one program, code set or instruction set can be loaded and executed by a processor to implement a power carrier communication method provided in the above method embodiment.

[0050] It should be understood that the "plurality" mentioned in this article refers to two or more. "And / or" describes the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0051] Those skilled in the art will appreciate that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium. The storage medium mentioned above may include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0052] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A power carrier communication method, characterized in that: include: Acquire the actual operating parameter group of all target power devices, and detect the communication quality of the initial communication link preset between the current target power devices according to the actual operating parameter group to obtain a communication quality judgment; Obtaining a detection result based on the communication quality judgment, the detection result including whether the communication is subject to high noise interference and whether the communication is normal; When the detection result is that the communication is interfered by high noise, triggering a link update mechanism to build a new communication link to obtain an updated link; placing the update link at a first priority and placing the initial communication link at a second priority; The triggering link update mechanism to build a new communication link to obtain the updated link includes: The communication link corresponding to the detection result that the communication is subject to high noise interference is used as a link to be replaced, the target power device at the starting end of the link to be replaced is used as an initial node, and the power device at the terminating end of the link to be replaced is used as a terminating node; According to the current initial node, the termination node and other nodes connected to the initial node, the update sub-links are determined one by one in the communication order, and the update link is determined based on all the update sub-links. Each of the nodes represents an electric power device that is in an turned-on state in the communication link where the initial node is located, and the update link is a communication link formed by connecting all the update sub-links in sequence.

2. The power carrier communication method according to claim 1, characterized in that: The step of determining the update sub-links one by one according to the communication sequence based on the current initial node, the termination node, and other nodes connected to the initial node, and determining the update link based on all the update sub-links includes: Select one of the other nodes connected to the initial node as the intermediate node of this round; Obtain a preparation link for this round according to the intermediate node for this round, wherein the preparation link is a communication link connecting the intermediate node and the initial node; Performing wireless network quality detection on the preparation link to obtain a wireless network quality judgment, wherein the wireless network quality judgment includes whether the wireless network meets the communication condition and whether the wireless network does not meet the communication condition; If the wireless network quality is judged as the wireless network not meeting the communication condition, the wired network quality detection is performed again on the preparation link to obtain the wired network quality judgment, wherein the wired network quality judgment includes whether the power transmission line meets the communication condition and whether the power transmission line does not meet the communication condition; If the wireless network quality is judged to be that the wireless network meets the communication conditions, the preparation link is directly used as an update sub-link, and the intermediate node of this round is used as the starting node of the next round, and then one of the other nodes connected to the initial node of the next round is selected as the intermediate node of the next round; If the wired network quality is judged as the transmission line does not meet the communication condition, then the preparation link of this round is excluded and the process returns to the step of selecting one of the other nodes connected to the initial node as the intermediate node of this round until a new update sub-link is obtained; Repeat multiple rounds of operations until all the starting nodes obtained meet the update condition, then end the operation and obtain the update link based on all the updated sub-links. The update condition means that the other end node of the last updated sub-link obtained, except the intermediate node, is the terminating node.

3. The power carrier communication method according to claim 2, characterized in that: If the current update link cannot bear the current communication load, a new update link is obtained by triggering the link update mechanism again to achieve load sharing.

4. The power carrier communication method according to claim 1, characterized in that: The detecting the current communication connection with the target power equipment according to the actual operation parameter group to obtain the communication quality judgment includes: Periodically sending a communication verification signal to the target power device through the initial communication link, each period being a verification period, and the verification period includes a plurality of verification sub-periods; receiving all actual operating parameter groups sent by the target power equipment in response to the communication verification signal; When the actual operating parameter group of each of the verification sub-periods is received, the real-time packet loss rate of the actual operating parameter group corresponding to the verification sub-period is calculated, and the communication quality judgment is obtained based on the real-time packet loss rate and the preset maximum packet loss rate threshold and the preset standard packet loss rate threshold. The communication quality judgment includes relatively stable communication, certain fluctuations in communication, and poor communication quality.

5. The power carrier communication method according to claim 4, characterized in that: The detection result obtained based on the communication quality judgment includes: When the communication quality is judged to be relatively stable or to have certain fluctuations, a first evaluation result corresponding to the target power equipment is obtained according to each of the actual operation parameter groups and a preset standard parameter range corresponding to each parameter in the actual operation parameter group, wherein the first evaluation result includes whether the equipment is operating normally or whether there is an abnormal risk in the equipment operation; The actual operation parameter group corresponding to the first assessment result that the equipment operation has an abnormal risk is used as the abnormal operation parameter group; When the first evaluation result is that there is an abnormal risk in the operation of the equipment, a second evaluation result is obtained according to the continuous change of each parameter in the abnormal operation parameter group in all the verification sub-periods, the continuous change is reflected by calculating the data fluctuation comprehensive index of each parameter in the abnormal operation parameter group in multiple verification sub-periods, and the average value of each parameter in the abnormal operation parameter group in all the verification sub-periods, the data fluctuation comprehensive index is calculated according to each parameter in the abnormal operation parameter group and a preset standard index threshold value corresponding to each parameter, and the second evaluation result includes normal operation of the equipment, abnormal operation of the equipment and abnormal communication; A detection result is obtained based on the first evaluation result and the second evaluation result.

6. The power carrier communication method according to claim 5, characterized in that: The obtaining of the detection result based on the first evaluation result and the second evaluation result includes: Taking the average value of each parameter in the abnormal operation parameter group in all the syndrome sub-periods as the average operation parameter; When the data fluctuation comprehensive index is greater than or equal to the standard index threshold, the second evaluation result is communication abnormality; When the data fluctuation comprehensive index is less than the standard index threshold, and at least one of the average operating parameters exceeds the corresponding standard parameter range, the second evaluation result is that the equipment is operating abnormally; When the data fluctuation comprehensive index is less than the standard index threshold, and the average operating parameters are all within the corresponding standard parameter range, the second evaluation result is that the equipment is operating normally.

7. The power carrier communication method according to claim 6, characterized in that: The calculation formula of the data fluctuation comprehensive index is as follows: ； ； in, Indicates a comprehensive index of data fluctuation corresponding to the abnormal operation parameter group; Indicates the total number of parameters in one of the abnormal operation parameter groups; Indicates the total number of check sub-periods; represents the total number of syndrome time periods; Indicates The first of the abnormal operation parameter groups corresponding to the first of the syndrome sub-periods parameters; Indicates The first of the abnormal operation parameter groups corresponding to the first of the syndrome sub-periods parameters; To judge the The syndrome period is compared with the The abnormal operation parameter group corresponding to the check sub-period The positive and negative growth of each parameter; Indicates the abnormal operation parameter group The weight parameter of the sum of the variances corresponding to the parameters in all the syndrome time periods.

8. An intelligent terminal, characterized in that: It comprises a memory and a processor, wherein the memory stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by the processor to implement the power carrier communication method as described in any one of claims 1 to 7.

9. A power line carrier communication system, characterized in that: include: Power equipment, used to operate according to preset operating parameters; The intelligent terminal as described in claim 8 is communicatively connected with all the power devices, and is used to obtain the actual operating parameter group of the power devices in real time, and monitor the communication status with the power devices according to the actual operating parameter group to obtain the detection result, and then adjust and optimize the communication with the power devices according to the detection result.

10. A computer-readable storage medium, characterized in that: The readable storage medium stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, at least one program, a code set or an instruction set is loaded and executed by a processor to implement the power carrier communication method as described in any one of claims 1 to 7.

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