Box-type substation intelligent control system based on data analysis

Abstract

The invention discloses a box-type substation intelligent control system based on data analysis, and relates to the technical field of box-type substation control. The substation intelligent control platform is in communication connection with a data acquisition unit, an electrical state analysis unit, an equipment operation analysis unit, an electrical fluctuation early warning unit, an operation safety early warning unit and a display platform. Statistical analysis is carried out on electrical information and operation information of each device of the box-type substation to obtain a box-type substation current fluctuation value, a substation voltage fluctuation value, a substation device power deviation value, a device electrical safety evaluation value, comprehensive energy consumption of the device, a device maintenance index and a ring value of the device; according to the method, substation electrical fluctuation state early warning and equipment operation safety state early warning are obtained through analysis, various conditions can be comprehensively considered, electrical fluctuation and equipment operation of the substation are monitored and early warned, and normal operation of the box-type substation is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of box-type substation control, and in particular to an intelligent control system for a box-type substation based on data analysis. Background Art

[0002] As the power industry develops, the importance of box-type substations is increasing. The traditional box-type substation management and control is limited by personnel management and cannot make timely adjustments to abnormal substation operations. The box-type substation intelligent control system based on data analysis came into being.

[0003] When operating, the traditional intelligent control system of box-type substation based on data analysis cannot comprehensively consider the current, voltage change value and effective power of the substation, nor can it consider the current load condition and various voltage parameters of the equipment. It cannot monitor the comprehensive energy consumption, maintenance records and environmental changes of the equipment. It cannot timely identify the abnormal safety status of the box-type substation equipment. It can often only be detected when the abnormality is already serious, and it is even more impossible to make adjustments in time and remind staff to make adjustments, which greatly increases the maintenance cost and reduces the reliability of power supply to a certain extent.

[0004] The traditional intelligent control system of box-type substation based on data analysis cannot take into account the fluctuation of current, voltage change value and effective power of the substation during operation, resulting in the box-type substation being in an abnormal state of large electrical fluctuations for a long time and unable to identify and adjust in time, causing power accidents.

[0005] In order to solve the above defects, a technical solution is now provided. Summary of the invention

[0006] In order to solve the technical problems raised by the above background technology, the present invention is proposed. The embodiment of the present invention provides a box-type substation intelligent control system based on data analysis.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] The box-type substation intelligent control system based on data analysis includes a substation intelligent control platform. The substation intelligent control platform is connected to a data acquisition unit, an electrical status analysis unit, an equipment operation analysis unit, an electrical fluctuation warning unit, an operation safety warning unit and a display platform.

[0009] The data acquisition unit is used to collect electrical information of each device in the box-type substation and operation information of each device in the substation, and send it to the electrical status analysis unit and the equipment operation analysis unit;

[0010] The electrical status analysis unit is used to receive electrical information of each device in the box-type substation, and perform electrical determination and analysis on each device in the box-type substation based on the information, obtain the box-type substation current fluctuation value, substation voltage fluctuation value, substation equipment power deviation value and equipment electrical safety evaluation value, and send them to the electrical fluctuation warning unit;

[0011] The equipment operation analysis unit is used to receive the operation information of each equipment in the substation, and perform judgment and analysis on the equipment operation information to obtain the comprehensive energy consumption, equipment maintenance index and ring value of the equipment, and send them to the operation safety early warning unit;

[0012] The electrical fluctuation warning unit is used to receive the substation current fluctuation value, voltage fluctuation value and equipment power deviation value, and perform substation electrical fluctuation state analysis and processing based on the received values;

[0013] The operation safety early warning unit is used to receive the equipment electrical safety evaluation value, comprehensive energy consumption, maintenance index and ring value, and perform safety analysis and processing on the equipment operation status based on the value.

[0014] Further, the specific analysis of the current fluctuation value and voltage fluctuation value of the box-type substation is as follows:

[0015] Establish two-dimensional coordinate change curves of the current and voltage values ​​of each device in the box-type substation over time. The current and voltage values ​​are recorded as Ir and Ur, r=1, 2, 3...., R, R is the maximum number of the monitoring time, connect the numerical points corresponding to each current value or voltage value respectively, and connect two adjacent numerical points to obtain a broken line, take the angle formed by the two adjacent broken lines, when the angle is less than π / 2, the angle is recorded as Iɑ1 and Uɑ1, which are respectively recorded as the first current sine value Isin2ɑ1 and the first voltage sine value Usin2ɑ1 of the numerical point, when the angle is greater than π / 2 and less than π, the angle is recorded as Iɑ2 and Uɑ2, which are respectively recorded as the second current sine value Isin2ɑ2 and the second voltage sine value Usin2ɑ2 of the numerical point, according to the formula Get the average current value of the device And the average voltage value Then through Get the standard deviation of the current value of each device I δ And the voltage standard deviation U δ , according to the set formula Obtain the device current fluctuation value B1 and the device voltage fluctuation value D1, where a1, a2, a3, a4, a5 and a6 are set influencing factors, A1 is the reference first current sine value of the device, A2 is the reference second current sine value of the device, A1 is the reference first voltage sine value of the device, and A2 is the reference second voltage sine value of the device;

[0016] The current fluctuation value and voltage fluctuation value of each device are compared and analyzed with the set current fluctuation value and voltage fluctuation value reference interval to obtain the box-type substation current fluctuation value ILX and the substation voltage fluctuation value ULX.

[0017] Furthermore, the specific analysis of the power deviation value and electrical safety evaluation value of substation equipment is as follows:

[0018] Obtain the voltage value U, current value I and current-voltage phase difference θ of each device at each monitoring time point according to the set formula Get the effective power of the device m represents the number of each device, and the matrix is ​​recorded in chronological order Calculate the average values ​​of the effective power matrix of the equipment, which is According to the set formula The effective power fluctuation value γ of the equipment is obtained, which is specifically calculated as γ=[γ1,γ2,γ3,…γ m ];

[0019] The average effective power of the device Sort by the average effective power of the device Performing value assignment processing; sorting the effective power fluctuation values ​​γ of the equipment, and performing value assignment processing on the effective power fluctuation values ​​γ of the equipment according to the sorting;

[0020] The average effective power of the device The equipment power evaluation value PG is obtained by adding the assigned value and the equipment effective power fluctuation value γ. The formula is: The equipment power evaluation value of each device is graded and statistically analyzed to obtain the power deviation value BPZ of the box-type substation equipment;

[0021] Obtain the rated current In, protection current Ip, and cut-off time T of each equipment in the box-type substation cut , average current I and maximum current I max , calculate and obtain the equipment current load index I1 and the equipment current safety index I2; statistically analyze the equipment current load index I1 and the equipment current safety index I2 to obtain the equipment current safety evaluation value IAQ;

[0022] Obtain the rated voltage Un, transient overvoltage Ug, and average current of each equipment in the box-type substation Maximum voltage U max and minimum voltage U min , get the equipment voltage safety evaluation value UAQ;

[0023] The equipment current safety evaluation value IAQ, the equipment voltage safety evaluation value UAQ, and the equipment effective power fluctuation value γ are statistically analyzed to obtain the equipment electrical safety evaluation value SDQ.

[0024] Furthermore, the detailed analysis of the comprehensive energy consumption of the equipment, the equipment maintenance index and the ring value of the equipment is as follows:

[0025] Obtain the operating parameters of each device and analyze and calculate the comprehensive energy consumption P of the device zhn ; Obtain equipment maintenance records, analyze and calculate to obtain equipment maintenance index W sw ; By monitoring, analyzing and calculating the temperature, humidity, dust concentration and equipment noise of the equipment, the ring value SHZ of the equipment is obtained.

[0026] Further, the specific analysis of the substation electrical fluctuation state analysis and processing is as follows:

[0027] Normalize the current fluctuation value ILX, voltage fluctuation value ULX and power deviation value BPZ of the box-type substation and substitute them into the set formula BDB=(2.125 y1×ILX+y2×ULX +y3×BPZ 2.11 )+1.21 to obtain the substation electrical parameter wave variable value BDB, where y1, y2 and y3 are the set weight factor coefficients;

[0028] Setting gradient reference thresholds Yu1, Yu2, and Yu3 of the substation electrical parameter wave variation value, and comparing and analyzing the substation electrical parameter wave variation value with the preset gradient reference thresholds Yu1, Yu2, and Yu3, wherein the gradient reference thresholds Yu1, Yu2, and Yu3 increase in a gradient manner;

[0029] When the substation electrical parameter fluctuation value is between the preset gradient reference thresholds Yu1 and Yu2, a general signal of substation electrical fluctuation is generated, and the system adjusts and selects voltage stabilizing equipment with higher accuracy and reliability, and installs reactive power compensation devices with better performance;

[0030] When the substation electrical parameter fluctuation value is between the preset gradient reference thresholds Yu2 and Yu3, a substation electrical fluctuation signal is generated, and the system adjusts and selects high-precision and high-reliability voltage stabilizing equipment, establishes a backup power supply system, and uses advanced equipment such as static VAR compensators;

[0031] When the substation electrical parameter fluctuation value is greater than the preset gradient reference threshold value Yu3, an abnormal signal of large electrical fluctuation of the substation is generated, and the system reminds and sends it to the substation intelligent control platform for display in the form of a description of the text "The electrical fluctuation of the substation is large, please check and analyze immediately".

[0032] Furthermore, the specific analysis of the equipment operation status safety analysis process is as follows:

[0033] The equipment electrical safety evaluation value SDQ, the equipment comprehensive energy consumption Pzhn , Equipment maintenance index W sw Normalize it with the ring value SHZ of the device according to the set formula The equipment operation safety state value SAZ is obtained, where η1 and η2 are the set weight factor coefficients respectively;

[0034] Setting gradient reference thresholds Yu4 and Yu5 of the equipment operation safety status value, and comparing and analyzing the equipment operation safety status value with the preset gradient reference thresholds Yu4 and Yu5, wherein the gradient reference thresholds Yu4 and Yu5 increase in a gradient manner;

[0035] When the equipment operation safety status value is less than the preset gradient reference threshold value Yu4, an equipment operation safety status abnormal signal is generated, and the system reminds and sends it to the substation intelligent control platform in the form of a description of "equipment operation safety status abnormal, please check and analyze immediately" for display and explanation;

[0036] When the equipment operation safety status value is between the preset gradient reference thresholds Yu4 and Yu5, the equipment operation safety status value is a general signal, and the system reminds and sends it to the substation intelligent control platform for display with the text description of "The equipment operation safety status is general, please pay attention to the operation of this equipment".

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] 1. The present invention obtains the equipment electrical safety evaluation value, the equipment comprehensive energy consumption, the equipment maintenance index and the equipment ring value by statistically analyzing the current value, voltage value, effective power, current load information, voltage-related information, and comprehensive energy consumption of each device in the substation, and analyzes again to obtain the equipment operation safety status value, and performs equipment operation status safety analysis and processing based on this, which can timely identify the abnormal state of safety of box-type substation equipment, can detect it when the abnormality begins, can make adjustments in time and remind staff to make adjustments, which can greatly reduce the maintenance cost and improve the reliability of power supply to a certain extent.

[0039] 2. The present invention obtains the current fluctuation value, voltage fluctuation value and power deviation value of the box-type substation equipment by statistically analyzing the fluctuation of the current value, voltage value and effective power of each equipment in the substation, and obtains the electrical parameter wave variation value of the substation by statistically analyzing the current fluctuation value, voltage fluctuation value and power deviation value of the box-type substation equipment. The present invention also obtains the electrical parameter wave variation value of the substation, and analyzes and processes the electrical fluctuation state of the substation based on the statistical analysis, so as to timely identify and adjust the box-type substation in an abnormal state with large electrical fluctuation, and reduce the occurrence of power accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. The following drawings are not intentionally scaled to the actual size, and the focus is on illustrating the main purpose of the present invention.

[0041] Figure 1 is a system block diagram of the present invention;

[0042] Figure 2 It is a curve diagram of the change of the current value or voltage value of the device of the present invention. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present invention.

[0044] like Figure 1 As shown, the box-type substation intelligent control system based on data analysis includes a substation intelligent control platform. The substation intelligent control platform is connected to a data acquisition unit, an electrical status analysis unit, an equipment operation analysis unit, an electrical fluctuation warning unit, an operation safety warning unit and a display platform.

[0045] The data acquisition unit is used to collect electrical information of each device in the box-type substation and operation information of each device in the substation, and send it to the electrical status analysis unit and the equipment operation analysis unit;

[0046] When the electrical status analysis unit receives the electrical information of each device in the box-type substation, and performs electrical determination and analysis on each device in the box-type substation based on the information, the specific operation process is as follows:

[0047] Establish two-dimensional coordinate change curves of the current and voltage values ​​of each device in the box-type substation respectively. The current value and voltage value are recorded as Ir and Ur, r = 1, 2, 3..., R, R is the maximum number of the monitoring time, connect the numerical points corresponding to each current value or voltage value respectively, and connect two adjacent numerical points to obtain a broken line, and take the angle formed by the two adjacent broken lines, such as Figure 2 As shown, when the angle is less than π / 2, the angle is calculated as Iɑ1 and Uɑ1, which are respectively calculated as the first current sine value Isin2ɑ1 and the first voltage sine value Usin2ɑ1 of the numerical point; when the angle is greater than π / 2 and less than π, the angle is calculated as Iɑ2 and Uɑ2, which are respectively calculated as the second current sine value Isin2ɑ2 and the second voltage sine value Usin2ɑ2 of the numerical point. According to the formula Get the average current value of the device And the average voltage value Then through Get the standard deviation of the current value of each device I δ And the voltage standard deviation U δ , according to the set formula The device current fluctuation value B1 and the device voltage fluctuation value D1 are obtained, a1, a2, a3, a4, a5 and a6 are set influencing factors, and the specific values ​​are determined by the professional field. A1 is the reference first current sine value of the device, A2 is the reference second current sine value of the device, A1 is the reference first voltage sine value of the device, and A2 is the reference second voltage sine value of the device;

[0048] The current fluctuation value and voltage fluctuation value of each device are compared and analyzed with the set current fluctuation value and voltage fluctuation value reference interval respectively. When the current fluctuation value and voltage fluctuation value of the device are respectively greater than the maximum value of the current fluctuation value and voltage fluctuation value reference interval, they are first-level current fluctuation devices and first-level voltage fluctuation devices. When the current fluctuation value and voltage fluctuation value of the device are respectively within the current fluctuation value and voltage fluctuation value reference interval, they are second-level current fluctuation devices. When the current fluctuation value and voltage fluctuation value of the device are respectively less than the minimum value of the current fluctuation value reference interval, they are third-level current fluctuation devices and third-level voltage fluctuation devices. The number of first-level current fluctuation devices, second-level current fluctuation devices, third-level current fluctuation devices, first-level voltage fluctuation devices, second-level voltage fluctuation devices and third-level voltage fluctuation devices in the box-type substation are counted as IY, IE, IS, UY, UE and US respectively. According to the set formula The current fluctuation value ILX and the voltage fluctuation value ULX of the box-type substation are obtained. a7, a8, a9 and a10 are the set influencing factors, and the specific values ​​are determined by this professional field;

[0049] Obtain the voltage value U, current value I and current-voltage phase difference θ of each device at each monitoring time point according to the set formula Get the effective power of the device m represents the number of each device, and the matrix is ​​recorded in chronological order Calculate the average values ​​of the effective power matrix of the equipment, which is According to the set formula The effective power fluctuation value γ of the equipment is obtained, which is specifically calculated as γ=[γ1,γ2,γ3,…γ m ];

[0050] The average effective power of the device Sort by small to large, and calculate the average effective power of the equipment according to the sorting Assign value to the minimum average effective power of the equipment The value is assigned as 1, the next value is 2, and so on. The maximum average effective power of the device Assign x and set the average effective power of the device Compare with the set standard effective power. When the average effective power of the equipment is greater than the set effective power, add x points, and do not add the rest. Sort the effective power fluctuation values ​​γ of the equipment from large to small, and assign values ​​to the effective power fluctuation values ​​γ of the equipment according to the sorting. The maximum effective power fluctuation value γ of the equipment is assigned 1, and the next one is 2. The points are assigned in sequence. The minimum effective power fluctuation value γ of the equipment is assigned x. Compare the effective power fluctuation value γ of the equipment with the set standard effective power fluctuation value. When the effective power fluctuation value of the equipment is less than the set effective power fluctuation value, add x points, and do not add the rest.

[0051] The average effective power of the device The equipment power evaluation value PG is obtained by adding the assigned value and the equipment effective power fluctuation value γ. The formula is: The power evaluation value of each device is graded. When the evaluation value PG is greater than or equal to 3.2x, the device power is marked as good. When the evaluation value PG is greater than 2.2x and less than 3.2x, the device power is marked as qualified. When the evaluation value PG is less than or equal to 1.5x, the device power is marked as unqualified. The number of unqualified devices is counted as Pg1, the number of qualified devices is counted as Pg2, and the number of good devices is counted as Pg3. The proportion of Pg1 and Pg3 in the entire data is calculated, respectively, and recorded as ZPg1 and ZPg3, and normalized according to the set formula The power deviation value BPZ of the box-type substation equipment is obtained, where α1 and α2 are both preset weight factors, and Ψ is a preset correction factor;

[0052] Obtain the rated current In, protection current Ip, and cut-off time T of each equipment in the box-type substation cut , average current and the maximum current I max , calculate the equipment current load index I1, the analysis module uses the formula Calculate the current load index I x , according to the formula Calculate the load protection index I y , the current load indicator I x and load protection index I y Normalization is based on the formula I1=M x ×b1+M y ×b2 calculates the equipment current load index I1, b1 and b2 are the set influencing factors, and the specific values ​​are determined by this professional field;

[0053] Calculate the current safety index I2 of the box-type substation equipment, and take the equipment current fluctuation value B1 and the cut-off time Tcut Normalization is done according to the formula Calculate the current safety index I2 of the box-type substation equipment, where ε is the preset threshold, according to the formula Determine a specific value of the preset threshold ε;

[0054] The equipment current load index I1 and the equipment current safety index I2 are converted into lengths according to a certain ratio, and a cylinder is constructed with the lengths of the equipment current load index I1 and the equipment current safety index I2 as the bottom circle diameter and the height of the cylinder. The surface area of ​​the cylinder is identified and marked as the equipment current safety evaluation value IAQ.

[0055] Obtain the rated voltage Un, transient overvoltage Ug, and average current of each equipment in the box-type substation Maximum voltage U max and minimum voltage U min , according to the set formula Calculate the first indicator of equipment voltage deviation U1, where ΔU is the allowable deviation range between the actual operating voltage and the rated voltage. According to the set formula Calculate the second index of equipment voltage deviation U2, normalize the first index of voltage deviation U1, the second index of equipment voltage deviation U2 and the voltage fluctuation value D1 and substitute them into the set formula The equipment voltage safety assessment value UAQ is obtained, where b5 and b6 are the set weight factor coefficients, and their sizes are custom settings, with values ​​of 1.11 and 1.15 respectively;

[0056] The equipment current safety assessment value IAQ and the equipment voltage safety assessment value UAQ are converted into lengths according to a certain ratio, and a parallelogram is constructed with the lengths of the equipment current safety assessment values ​​IAQ and the equipment voltage safety assessment values ​​UAQ as the lengths of the base and height of the parallelogram; the equipment effective power fluctuation value γ is converted into lengths according to a certain ratio, and a circle is constructed inside the parallelogram with the length of the equipment effective power fluctuation value γ as the diameter of the circle, with the center of the circle coinciding with the center of the parallelogram, the area of ​​the non-coinciding figure is identified, and marked as the equipment electrical safety assessment value SDQ.

[0057] When the equipment operation analysis unit receives the operation information of each equipment in the substation, and performs equipment operation information determination and analysis based on the information, the specific operation process is as follows:

[0058] Obtain the operating parameters of each device, and the calculation module uses the formula Calculate the comprehensive energy consumption P of the equipment zhn ;

[0059] The operating parameters of the equipment include standby power P dj , no-load power P0, full-load power Pθ , maximum power factor cosθ1, actual power factor x and operating time t, where standby power P dj The power consumption of the device in standby mode to monitor the device status and respond to the start signal at any time. The no-load power P0 is the power consumption of the device when there is no load current output. The full-load power P m is the power consumption of the equipment when it is running at full load, the maximum power factor cosθ1 is the maximum power factor of the equipment when it is running at full load, the actual power factor x is the power factor of the equipment when it is running, the running time t is the running time period of the equipment under different power factors x, f1, f2 and f3 are weight coefficients, which are specific values ​​determined by professionals in the field of actual energy efficiency of the equipment;

[0060] Obtain equipment maintenance records including equipment failure times g num , average equipment failure processing time t gcl The time interval between adjacent equipment failures t jgs ; Calculate the equipment maintenance index W sw , normalize the number of equipment failures, average equipment failure processing time and the interval between adjacent equipment failures, and use the set formula Calculate the equipment maintenance index W sw , γζ is the adjustment factor for equipment maintenance, and the specific value is determined by personnel in the professional field according to the equipment maintenance status;

[0061] By monitoring the temperature, humidity and dust concentration of the equipment, and establishing the temperature, humidity and dust concentration change curves over time in the coordinate system, and drawing the temperature, humidity and dust concentration standard straight line graphs in the coordinate system, the closed figure areas of the curves and the standard straight lines are measured and summed, and the enclosed total area of ​​the temperature, humidity and dust concentration is weighted and multiplied by the corresponding proportional factor to obtain the equipment's condition value; with each device as the center, set noise value points within a certain distance radius, the specific distance radius is 0.2m, 0.5m, 1m and 2m, set noise value points at uniform multiple angles within each circumference radius, and the specific angle interval is set to 20 degrees, take the maximum noise value of all value points and the set reference noise maximum value, and compare them to obtain the equipment's noise condition value; convert the equipment's condition value and the equipment's noise condition value into length at a certain ratio, construct an ellipse with the length of the equipment's condition value and the equipment's noise condition value as the major axis and the minor axis of the ellipse, extract the circumference of the ellipse and mark it as the equipment's ring value SHZ;

[0062] When the electrical fluctuation warning unit receives the substation current fluctuation value, voltage fluctuation value and equipment power deviation value, and analyzes and processes the substation electrical fluctuation state based on this, the specific operation process is as follows:

[0063] Normalize the current fluctuation value ILX, voltage fluctuation value ULX and power deviation value BPZ of the box-type substation and substitute them into the set formula BDB=(2.125 y1×ILX+y2×ULX +y3×BPZ 2.11 )+1.21 to obtain the substation electrical parameter wave variable value BDB, where y1, y2 and y3 are the set weight factor coefficients, and their sizes are custom settings, with values ​​of 1.111, 2.111 and 1.115 respectively;

[0064] Setting gradient reference thresholds Yu1, Yu2, and Yu3 of the substation electrical parameter wave variation value, and comparing and analyzing the substation electrical parameter wave variation value with the preset gradient reference thresholds Yu1, Yu2, and Yu3, wherein the gradient reference thresholds Yu1, Yu2, and Yu3 increase in a gradient manner;

[0065] When the substation electrical parameter fluctuation value is less than the preset gradient reference threshold value Yu1, a substation electrical fluctuation signal is generated without other operations;

[0066] When the substation electrical parameter fluctuation value is between the preset gradient reference thresholds Yu1 and Yu2, a general signal of substation electrical fluctuation is generated, and the system adjusts and selects voltage stabilizing equipment with higher accuracy and reliability, and installs reactive power compensation devices with better performance;

[0067] When the substation electrical parameter fluctuation value is between the preset gradient reference thresholds Yu2 and Yu3, a substation electrical fluctuation signal is generated, and the system adjusts and selects high-precision and high-reliability voltage stabilizing equipment, establishes a backup power supply system, and uses advanced equipment such as static VAR compensators;

[0068] When the substation electrical parameter fluctuation value is greater than the preset gradient reference threshold value Yu3, an abnormal signal of large electrical fluctuation of the substation is generated, and the system reminds and sends it to the substation intelligent control platform for display in the form of a description of the text "The electrical fluctuation of the substation is large, please check and analyze immediately".

[0069] The present invention obtains the current fluctuation value, voltage fluctuation value and power deviation value of the box-type substation equipment by statistically analyzing the fluctuation of the current value, voltage value and effective power of each equipment in the substation, and obtains the electrical parameter wave variation value of the substation by statistically analyzing the current fluctuation value, voltage fluctuation value and power deviation value of the box-type substation equipment. The present invention also obtains the electrical parameter wave variation value of the substation, and analyzes and processes the electrical fluctuation state of the substation based on the statistical analysis, timely identifies and adjusts the box-type substation in an abnormal state with large electrical fluctuation, and reduces the occurrence of power accidents.

[0070] When the operation safety warning unit receives the equipment electrical safety evaluation value, comprehensive energy consumption, maintenance index and ring value, and performs safety analysis and processing on the equipment operation status, the specific operation process is as follows:

[0071] The equipment electrical safety evaluation value SDQ, the equipment comprehensive energy consumption P zhn , Equipment maintenance index W sw Normalize it with the ring value SHZ of the device according to the set formula The equipment operation safety state value SAZ is obtained, where η1 and η2 are the set weight factor coefficients respectively.

[0072] Setting gradient reference thresholds Yu4 and Yu5 of the equipment operation safety status value, and comparing and analyzing the equipment operation safety status value with the preset gradient reference thresholds Yu4 and Yu5, wherein the gradient reference thresholds Yu4 and Yu5 increase in a gradient manner;

[0073] When the equipment operation safety status value is less than the preset gradient reference threshold value Yu4, an equipment operation safety status abnormal signal is generated, and the system reminds and sends it to the substation intelligent control platform for display in the form of a description of the text "The equipment operation safety status is abnormal, please check and analyze immediately".

[0074] When the equipment operation safety status value is between the preset gradient reference thresholds Yu4 and Yu5, the equipment operation safety status value is a general signal, and the system reminds and sends it to the substation intelligent control platform in the form of a description of the text "The equipment operation safety status is general, please pay attention to the operation of this equipment" for display;

[0075] When the equipment operation safety status value is greater than the preset gradient reference threshold value Yu5, a normal equipment operation safety status signal is generated, and no other operations are performed;

[0076] The present invention obtains the equipment electrical safety evaluation value, the equipment comprehensive energy consumption, the equipment maintenance index and the equipment ring value by statistically analyzing the current value, voltage value, effective power, current load information, voltage-related information, and comprehensive energy consumption of each device in the substation, and further analyzes to obtain the equipment operation safety status value, and performs equipment operation status safety analysis and processing based on this. It can timely identify the abnormal safety status of the box-type substation equipment, can detect it when the abnormality begins, can timely adjust and remind the staff to adjust, which can greatly reduce the maintenance cost and improve the reliability of power supply to a certain extent.

[0077] The above is an explanation of the present invention and should not be considered as a limitation thereof. Although several exemplary embodiments of the present invention have been described, it will be readily appreciated by those skilled in the art that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present invention. Therefore, all such modifications are intended to be included within the scope of the present invention as defined in the claims. It should be understood that the above is an explanation of the present invention and should not be considered as being limited to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the appended claims. The present invention is defined by the claims and their equivalents.

Claims

1. A box-type substation intelligent control system based on data analysis, including a server, characterized in that: Server connections are: The electrical status analysis unit is used to receive the electrical information of each device in the box-type substation, and perform electrical determination and analysis on each device in the box-type substation based on the information, obtain the box-type substation current fluctuation value, substation voltage fluctuation value, substation equipment power deviation value and equipment electrical safety evaluation value, and send them to the electrical fluctuation early warning unit; The equipment operation analysis unit is used to receive the operation information of each equipment in the substation, and perform judgment and analysis on the equipment operation information to obtain the comprehensive energy consumption, equipment maintenance index and ring value of the equipment, and send them to the operation safety early warning unit; The electrical fluctuation warning unit is used to receive the substation current fluctuation value, voltage fluctuation value and equipment power deviation value, and analyze and process the substation electrical fluctuation status based on them; The operation safety early warning unit is used to receive the equipment electrical safety evaluation value, comprehensive energy consumption, maintenance index and ring value, and perform safety analysis and processing on the equipment operation status based on them.

2. The intelligent control system for box-type substation based on data analysis according to claim 1 is characterized in that: The specific analysis of the current fluctuation value and voltage fluctuation value of the box-type substation is as follows: Establish two-dimensional coordinate change curves of the current and voltage values ​​of each device in the box-type substation over time, connect the numerical points corresponding to each current value or voltage value, and connect two adjacent numerical points to obtain a broken line, take the angle formed by the two adjacent broken lines, when the angle is less than π / 2, the angle is calculated as Iɑ1 and Uɑ1, which are respectively calculated as the first current sine value Isin2ɑ1 and the first voltage sine value Usin2ɑ1 of the numerical point, when the angle is greater than π / 2 and less than π, the angle is calculated as Iɑ2 and Uɑ2, which are respectively calculated as the second current sine value Isin2ɑ2 and the second voltage sine value Usin2ɑ2 of the numerical point, calculate the average current value and the average voltage value of the equipment, and then calculate the standard deviation of the current value and the standard deviation of the voltage value of each device, and calculate the equipment current fluctuation value and the equipment voltage fluctuation value according to the set formula; compare and analyze the current fluctuation value and voltage fluctuation value of each device with the set current fluctuation value and voltage fluctuation value reference interval, and obtain the box-type substation current fluctuation value and the substation voltage fluctuation value.

3. The intelligent control system for box-type substation based on data analysis according to claim 1 is characterized in that: The specific analysis of the substation equipment power deviation value and equipment electrical safety evaluation value is as follows: Obtain the voltage value, current value and current-voltage phase difference of each device at each monitoring time point, then calculate the effective power of the device, record them in chronological order to obtain the effective power matrix of the device, calculate the average values ​​of the effective power matrix of the device, and then obtain the effective power fluctuation value of the device; The average effective power of the equipment and the fluctuation value of the effective power of the equipment are sorted accordingly, and the values ​​are assigned according to the sorting; The equipment power evaluation value is obtained by adding the assigned value of the average effective power of the equipment and the effective power fluctuation value of the equipment, and the equipment power evaluation value of each equipment is graded, and statistical analysis is performed to obtain the power deviation value of the box-type substation equipment; Obtain the rated current, protection current, cut-off time, average current and maximum current of each device in the box-type substation, and calculate the equipment current load index and equipment current safety index; The equipment current safety evaluation value is obtained by statistical analysis of the equipment current safety index; Obtain the rated voltage, transient overvoltage, average current, maximum voltage and minimum voltage of each equipment in the box-type substation, and analyze and obtain the equipment voltage safety evaluation value; The equipment electrical safety evaluation value is obtained by statistically analyzing the equipment current safety evaluation value, the equipment voltage safety evaluation value, and the equipment effective power fluctuation value.

4. The intelligent control system for box-type substation based on data analysis according to claim 1 is characterized in that: The detailed analysis of the comprehensive energy consumption, equipment maintenance index and equipment ring value of the equipment is as follows: Obtain the operating parameters of each device, analyze and calculate the comprehensive energy consumption of the equipment; obtain the maintenance record of the equipment and analyze and calculate the equipment maintenance index; monitor the temperature, humidity, dust concentration, and equipment noise of the equipment and analyze and calculate the ring value of the equipment.

5. The intelligent control system for box-type substation based on data analysis according to claim 1 is characterized in that: The specific analysis of the substation electrical fluctuation state analysis and processing is as follows: The current fluctuation value, voltage fluctuation value and power deviation value of the box-type substation are statistically analyzed to obtain the electrical parameter fluctuation value of the substation; Set the gradient reference thresholds Yu1, Yu2, and Yu3 of the substation electrical parameter wave change value, and compare and analyze the substation electrical parameter wave change value with the preset gradient reference thresholds Yu1, Yu2, and Yu3: when the substation electrical parameter wave change value is between the preset gradient reference thresholds Yu1 and Yu2, a general substation electrical fluctuation signal is generated; when the substation electrical parameter wave change value is between the preset gradient reference thresholds Yu2 and Yu3, a substation electrical fluctuation large signal is generated; when the substation electrical parameter wave change value is greater than the preset gradient reference threshold Yu3, a substation electrical fluctuation large abnormal signal is generated.

6. The intelligent control system for box-type substation based on data analysis according to claim 1 is characterized in that: The specific analysis of the equipment operation status safety analysis process is as follows: Analyze the equipment electrical safety evaluation value, equipment comprehensive energy consumption, equipment maintenance index and equipment ring value to obtain the equipment operation safety status value; Set the gradient reference thresholds Yu4 and Yu5 of the equipment operation safety status value, and compare and analyze the equipment operation safety status value with the preset gradient reference thresholds Yu4 and Yu5: when the equipment operation safety status value is less than the preset gradient reference threshold Yu4, an equipment operation safety status abnormal signal is generated; when the equipment operation safety status value is between the preset gradient reference thresholds Yu4 and Yu5, a general signal of the equipment operation safety status value is generated.

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