A substation power load monitoring system

Abstract

The present invention relates to the technical field of electric power systems, and in particular to a substation electric power load monitoring system, comprising: an electric power load detection device, an environmental detection device, a load analysis module and a load anomaly processing module, wherein the electric power load detection device detects various electric power data to facilitate understanding of the real-time load situation of the electric power system, and the environmental detection device detects the temperature of the equipment and the wind situation; the load analysis module calculates the energy supply electric power load fluctuation parameter to determine the load anomaly trend type of the current time period; the load anomaly processing module controls the input end and the electric power use end of the substation according to the load anomaly trend type; the system optimizes the operation of the electric power system in a targeted manner by real-time monitoring and analyzing the electric power load and the environmental situation, thereby ensuring the stability and efficiency of the electric power supply and reducing the number of times the working state of the substation changes, and the system can realize intelligent electric power load management, improve energy utilization efficiency, and reduce operating costs.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and in particular to a power load monitoring system for a substation. Background Art

[0002] Power load monitoring improves the efficiency of power system operation, saves energy and reduces emissions, and ensures grid stability by understanding power demand in real time, predicting load changes, optimizing energy dispatch, and supporting new energy access. This work helps plan reasonable power supply, reduce energy costs, improve the utilization rate of renewable energy, and reduce the occurrence of faults. It is a key link in power system management.

[0003] Chinese patent publication number: CN105515192A, discloses a monitoring and early warning system and method for accessing load data of power transmission and transformation equipment to a power system, including the following steps: establishing equipment measurement model specifications; establishing access log content standards; parsing load data through measurement model specifications; storing real-time access load data in a kafka message queue to establish an external real-time broadcast and push real-time data channel; identifying and judging network, service, and storage faults in the access process and storing them in a fault record table and accessing them on the front page; supplementing missing data in fault records through a historical data interface service.

[0004] However, the prior art still has the following problems: in actual situations, since wind turbines mainly rely on wind power to generate electricity, but cannot guarantee that the wind turbines are always in rated working condition to generate electricity, the power load provided by the generators cannot meet the needs of the power-using end equipment. Summary of the invention

[0005] To this end, the present invention provides a substation power load monitoring system to overcome the problem that since wind turbines mainly rely on wind power to generate electricity, but cannot guarantee that the wind turbines are always in the rated working state to generate electricity, the power load provided by the generator cannot meet the needs of the power-using end equipment.

[0006] To achieve the above object, the present invention provides a substation power load monitoring system, comprising:

[0007] The power load detection device includes a power consumption end detection unit for detecting voltage data and current data of each device at the power consumption end, and a substation input end detection unit for detecting operating frequency and voltage data at the substation input end;

[0008] An environmental detection device, comprising a temperature detection unit configured to detect the temperature of equipment at the power-using end, and a wind force detection unit configured to continuously obtain wind force conditions at the input end of the substation;

[0009] A load analysis module, which is connected to the power load detection device and the environment detection device respectively, and is used to calculate the power supply load fluctuation parameter according to the wind conditions and the voltage data and operating frequency of the input end of the substation to determine the load abnormality trend type in the current time period;

[0010] A load abnormality processing module, which is respectively connected to the power load detection device, the environment detection device and the load analysis module, is used to control the substation input end and the power use end according to the load abnormality trend type, including:

[0011] Obtain the power load of the equipment at the power-using end during the current monitoring period and calculate the fluctuation of the power load, determine the power overload characterization condition to determine whether to cool down the equipment at the power-using end in advance, and compare the power load fluctuation amount with the power load fluctuation amount under the same wind conditions in historical data to determine the adjustment amount of the cooling standard of the equipment at the power-using end;

[0012] Or, the maximum value of the power load of the equipment at the power consumption end is obtained, and compared with the minimum value of the power load at the input end of the substation to determine whether the substation needs to perform power load compensation.

[0013] Furthermore, the environment detection device is also used to divide the monitoring time into several monitoring time periods according to the continuously acquired wind conditions at the input end of the substation, including:

[0014] To determine when the wind force level changes and when the wind direction changes;

[0015] The monitoring time is divided according to the time when the wind force level changes and the time when the wind direction changes, to obtain several monitoring time periods.

[0016] Furthermore, the load analysis module calculates the power supply load fluctuation parameter according to the wind conditions and the voltage data and operating frequency at the input end of the substation. The power supply load fluctuation parameter is determined according to formula (1).

[0017]

[0018] In formula (1), K is the power supply load fluctuation parameter, v1 is the effective wind speed, v0 is the standard effective wind speed, Vi is the voltage value of the substation input terminal detected for the i-th time in the current monitoring time period, V0 is the average voltage value of the substation input terminal in the historical monitoring time period with the same wind conditions, Hi is the operating frequency of the substation input terminal detected for the i-th time in the current monitoring time period, H0 is the average operating frequency of the substation input terminal in the historical monitoring time period with the same wind conditions, n is the number of detections, and i is an integer greater than 0.

[0019] Furthermore, the load analysis module determines the load abnormality trend type in the current time period according to the power supply load fluctuation parameter.

[0020] If the energy supply power load fluctuation parameter is greater than or equal to the standard energy supply power load fluctuation parameter, the load abnormality trend type is an explicit load abnormality trend;

[0021] If the energy supply power load fluctuation parameter is smaller than the standard energy supply power load fluctuation parameter, the load abnormality trend type is a hidden load abnormality trend.

[0022] Furthermore, the load anomaly processing module controls the input end and the power use end of the substation according to the load anomaly trend type, including:

[0023] If the load abnormality trend type is an explicit load abnormality trend, the power load of the equipment at the power-using end in the current monitoring period is obtained and the fluctuation of the power load is calculated, the power overload characterization condition is determined to determine whether to cool down the equipment at the power-using end in advance, and the power load fluctuation amount is compared with the power load fluctuation amount under the same wind conditions in the historical data to determine the adjustment amount of the cooling standard of the equipment at the power-using end;

[0024] If the load abnormality trend type is a hidden load abnormality trend, the adjustment method of the substation input end is to obtain the maximum value of the power load of the equipment at the power consumption end, and compare it with the minimum value of the power load at the substation input end to determine whether the substation needs to perform power load compensation.

[0025] Furthermore, the load anomaly processing module determines the power load fluctuation parameter according to the instantaneous power load in the current monitoring time period, and the power load fluctuation parameter is determined according to formula (2):

[0026]

[0027] In formula (2), M is the power load fluctuation parameter, Pj is the power load at the power user end obtained for the jth time, P0 is the average power load at the power user end, m is the number of detections in the previous monitoring time period, and j is an integer greater than 0.

[0028] Furthermore, the power overload characterization condition of the load anomaly processing module is that the power load fluctuation parameter corresponding to the equipment at the power usage end is greater than or equal to the standard power load fluctuation parameter, and the power load of the equipment is greater than a predetermined load threshold.

[0029] Furthermore, the load abnormality processing module determines whether to cool down the equipment at the power consumption end in advance, including:

[0030] If the power overload characterization condition is met, it is determined that the equipment at the power consumption end needs to be cooled down in advance;

[0031] If the power overload characterization condition is not met, it is determined that there is no need to cool down the equipment at the power consumption end in advance.

[0032] Furthermore, the load anomaly processing module determines the adjustment amount of the equipment cooling standard at the power user end according to the difference between the power load fluctuation amount and the power load fluctuation amount under the same wind force condition in the historical data;

[0033] The adjustment amount of the equipment cooling standard is proportional to the difference.

[0034] Furthermore, the load anomaly processing module determines whether the substation needs to perform power load compensation, including:

[0035] If the maximum value of the power load of the equipment at the power-using end is greater than or equal to the minimum value of the power load at the input end of the substation, the substation needs to perform power load compensation;

[0036] If the maximum value of the power load of the equipment at the power-consuming end is less than the minimum value of the power load at the input end of the substation, the substation does not need to perform power load compensation.

[0037] Compared with the prior art, the beneficial effects of the present invention are that the power load detection device detects various power data to facilitate understanding of the real-time load situation of the power system, and the environmental detection device detects the equipment temperature and wind conditions; the load analysis module calculates the power supply load fluctuation parameters to determine the load abnormality trend type in the current time period; the load abnormality processing module determines the cooling measures of the power-using end equipment and the adjustment method of the substation according to the load abnormality trend type; the system optimizes the operation of the power system by real-time monitoring and analysis of power load and environmental factors, ensuring the stability and efficiency of power supply, and avoiding overheating of equipment due to excessive power load. The system can realize intelligent power load management, improve energy utilization efficiency, and reduce operating costs.

[0038] Furthermore, in the present invention, the standard power load fluctuation parameters are determined based on the wind conditions and relevant functional parameters of the substation input end. It can be determined that the current abnormal power load at the substation input end may be caused by unstable wind conditions, which may lead to unstable power load at the substation input end, or it may be caused by unstable working conditions of functional equipment at the substation input end.

[0039] Furthermore, in the present invention, the stability of the power load at the input end of the substation is determined by the power supply power load fluctuation parameter. The larger the power supply power load fluctuation parameter, the worse the stability of the power load provided by the current substation input end. The abnormal cause is more likely to be the unstable power generation caused by the wind condition being lower than the standard effective wind speed. On the contrary, when the power supply power load fluctuation parameter is small, the power load affected by the wind can be excluded, and it is caused by the fluctuation of the equipment at work, which can be solved by appropriate power compensation. Therefore, the present invention takes into account the different fluctuation conditions of the power load and adaptively selects the adjustment method, which saves compensation energy while ensuring the working stability of the power user end.

[0040] Furthermore, in the present invention, when the wind speed at the input end of the substation is lower than the standard wind speed, the equipment at the power-using end is cooled in advance, thereby avoiding the energy consumption of the equipment in a high-temperature state, reducing the difficulty of cooling, and reducing the power load required for cooling. While ensuring the service life of the equipment at the power-using end, the power load provided by the input end of the substation can meet the power load demand of the power-using end, thereby improving the working stability of the equipment at the power-using end. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a power load monitoring system for a substation according to an embodiment of the present invention;

[0042] Figure 2 A logic diagram for determining the type of abnormal load trend according to an embodiment of the present invention;

[0043] Figure 3 A logic diagram for determining whether to cool down the equipment at the power-consuming end in advance according to an embodiment of the present invention;

[0044] Figure 4 This is a logic diagram for determining whether a substation needs to perform power load compensation according to an embodiment of the present invention. DETAILED DESCRIPTION

[0045] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] See also Figure 1 As shown, it is a structural schematic diagram of the substation power load monitoring system of the present invention; the present invention provides a substation power load monitoring system, comprising:

[0047] The power load detection device includes a power consumption end detection unit for detecting voltage data and current data of each device at the power consumption end, and a substation input end detection unit for detecting operating frequency and voltage data at the substation input end;

[0048] An environmental detection device, comprising a temperature detection unit configured to detect the temperature of equipment at the power-using end, and a wind force detection unit configured to continuously obtain wind force conditions at the input end of the substation;

[0049] A load analysis module, which is connected to the power load detection device and the environment detection device respectively, and is used to calculate the power supply load fluctuation parameter according to the wind conditions and the voltage data and operating frequency of the input end of the substation to determine the load abnormality trend type in the current time period;

[0050] A load abnormality processing module, which is respectively connected to the power load detection device, the environment detection device and the load analysis module, is used to control the substation input end and the power use end according to the load abnormality trend type, including:

[0051] Obtain the power load of the equipment at the power-using end during the current monitoring period and calculate the fluctuation of the power load, determine the power overload characterization condition to determine whether to cool down the equipment at the power-using end in advance, and compare the power load fluctuation amount with the power load fluctuation amount under the same wind conditions in historical data to determine the adjustment amount of the cooling standard of the equipment at the power-using end;

[0052] Or, the maximum value of the power load of the equipment at the power consumption end is obtained, and compared with the minimum value of the power load at the input end of the substation to determine whether the substation needs to perform power load compensation.

[0053] In practice, the power consumption end is generally the equipment in the factory that can consume electricity, that is, all the equipment in the factory, and the substation input end is the wind power equipment that provides electricity to the substation corresponding to the factory whose power load is monitored.

[0054] The power usage end detection unit in the power load detection device is an intrusive detection device, which can specifically detect the power load data of each working equipment in the detection factory. The substation input end detection unit is a non-intrusive detection device, which directly obtains the total load data at the power supply entrance of the substation input end. This is a prior art and will not be repeated here.

[0055] The temperature detection unit of the environment detection device is arranged at the position where each device generates the most heat during operation, and the wind force detection unit obtains wind force conditions including wind speed and wind direction.

[0056] In implementation, the present invention does not limit the specific structure of the load analysis module and the load anomaly processing module, which may be composed of logic components, including a field programmable processor, a computer, and a microprocessor in the computer.

[0057] The power load detection device detects various power data to facilitate understanding of the real-time load situation of the power system, and the environmental detection device detects the equipment temperature and wind conditions; the load analysis module calculates the power supply load fluctuation parameters to determine the load abnormality trend type in the current time period; the load abnormality processing module determines the cooling measures for the power-using equipment and the adjustment method of the substation according to the load abnormality trend type; the system optimizes the operation of the power system by real-time monitoring and analysis of power load and environmental factors, ensuring the stability and efficiency of power supply, and avoiding overheating of equipment due to excessive power load. The system can realize intelligent power load management, reduce the frequency of substation changing working status, improve energy utilization efficiency, and reduce operating costs.

[0058] Specifically, the environment detection device is also used to divide the monitoring time into several monitoring time periods according to the continuously acquired wind conditions at the input end of the substation, including:

[0059] To determine when the wind force level changes and when the wind direction changes;

[0060] The monitoring time is divided according to the time when the wind force level changes and the time when the wind direction changes, to obtain several monitoring time periods.

[0061] It is understandable that wind conditions affect the power generation stability of wind turbines, especially when the wind speed is lower than the rated wind speed of 11 m / s. The greater the wind speed change, the greater the impact on the stability of wind power generation.

[0062] In implementation, when the wind direction and wind force level change below the rated wind speed of the wind turbine, causing the effective wind speed of the wind turbine to change by more than 1 m / s, the current monitoring period is determined to end and a new monitoring period begins.

[0063] See also Figure 2 As shown, it is a logic diagram for determining the load abnormality trend type according to an embodiment of the present invention. The load analysis module calculates the power supply load fluctuation parameter according to the wind power situation and the voltage data and operating frequency of the substation input terminal. The power supply load fluctuation parameter is determined according to formula (1).

[0064]

[0065] In formula (1), K is the power supply load fluctuation parameter, v1 is the effective wind speed, v0 is the standard effective wind speed, Vi is the voltage value of the substation input terminal detected for the i-th time in the current monitoring time period, V0 is the average voltage value of the substation input terminal in the historical monitoring time period with the same wind conditions, Hi is the operating frequency of the substation input terminal detected for the i-th time in the current monitoring time period, H0 is the average operating frequency of the substation input terminal in the historical monitoring time period with the same wind conditions, n is the number of detections, and i is an integer greater than 0.

[0066] In practice, the effective wind speed is the wind speed in the direction in which the fan of the wind turbine faces the wind. The same wind conditions mean the same effective wind speeds, and the standard effective wind speed v0=11 m / s.

[0067] It is understandable that the rated wind speed of a wind turbine is generally 11 m / s to 12 m / s, so the standard effective wind speed is 11 m / s.

[0068] The voltage value at the input end of the substation and the operating frequency at the input end of the substation can be directly obtained through the power load detection device.

[0069] Specifically, the load analysis module determines the load abnormality trend type of the current time period according to the power supply load fluctuation parameter.

[0070] If the energy supply power load fluctuation parameter is greater than or equal to the standard energy supply power load fluctuation parameter, the load abnormality trend type is an explicit load abnormality trend;

[0071] If the energy supply power load fluctuation parameter is smaller than the standard energy supply power load fluctuation parameter, the load abnormality trend type is a hidden load abnormality trend.

[0072] In the implementation, the standard functional power load fluctuation parameters are selected in the interval [0.4, 0.6].

[0073] In the present invention, the standard power load fluctuation parameters are determined according to the wind conditions and the relevant functional parameters of the substation input end. It can be determined that the current abnormal power load at the substation input end may be caused by the unstable wind power, which may lead to the unstable power load at the substation input end. It may also be caused by the unstable working state of the functional equipment at the substation input end.

[0074] Specifically, the load anomaly processing module controls the input end and the power use end of the substation according to the load anomaly trend type, including:

[0075] If the load abnormality trend type is an explicit load abnormality trend, the power load of the equipment at the power-using end in the current monitoring period is obtained and the fluctuation of the power load is calculated, the power overload characterization condition is determined to determine whether to cool down the equipment at the power-using end in advance, and the power load fluctuation amount is compared with the power load fluctuation amount under the same wind conditions in the historical data to determine the adjustment amount of the cooling standard of the equipment at the power-using end;

[0076] If the load abnormality trend type is a hidden load abnormality trend, the adjustment method of the substation input end is to obtain the maximum value of the power load of the equipment at the power consumption end, and compare it with the minimum value of the power load at the substation input end to determine whether the substation needs to perform power load compensation.

[0077] In the present invention, the power load stability at the input end of the substation is determined by the power supply power load fluctuation parameter. The larger the power supply power load fluctuation parameter, the worse the power load stability provided by the current substation input end. The abnormal cause is more likely to be the unstable power generation caused by the wind condition being lower than the standard effective wind speed. On the contrary, when the power supply power load fluctuation parameter is small, the power load affected by wind reasons can be excluded, and it is caused by the fluctuation of equipment at work, which can be solved by appropriate power compensation. Therefore, the present invention takes into account the different fluctuation conditions of the power load and adaptively selects the adjustment method, which saves compensation energy while ensuring the working stability of the power user end.

[0078] See also Figure 3 As shown, it is a logic diagram of determining whether to cool down the equipment at the power user end in advance according to an embodiment of the present invention. The load abnormality processing module determines the power load fluctuation parameter according to the instantaneous power load in the current monitoring time period. The power load fluctuation parameter is determined according to formula (2).

[0079]

[0080] In formula (2), M is the power load fluctuation parameter, Pj is the power load at the power user end obtained for the jth time, P0 is the average power load at the power user end, m is the number of detections in the previous monitoring time period, and j is an integer greater than 0.

[0081] In implementation, the power load at the power-using end is the power consumption at the power-using end, which is calculated based on the current and voltage of each device at the power-using end. The average power load at the power-using end is the average power load of the power-using end devices in the historical monitoring time period under the same wind conditions.

[0082] Specifically, the power overload characterization condition of the load anomaly processing module is that the power load fluctuation parameter corresponding to the equipment at the power usage end is greater than or equal to the standard power load fluctuation parameter, and the power load of the equipment is greater than a predetermined load threshold.

[0083] In the implementation, the standard uses the power load fluctuation parameter selected in the interval [0.15, 0.25], and the load threshold is 10 kilowatts.

[0084] Specifically, the load abnormality processing module determines whether to cool down the equipment at the power consumption end in advance, including:

[0085] If the power overload characterization condition is met, it is determined that the equipment at the power consumption end needs to be cooled down in advance;

[0086] If the power overload characterization condition is not met, it is determined that there is no need to cool down the equipment at the power consumption end in advance.

[0087] In practice, cooling the equipment at the power-using end can be achieved by installing cooling equipment near the power-using end equipment, such as negative pressure fans, mobile industrial air conditioners, etc. This is existing technology and is not specifically limited.

[0088] It is understandable that many large equipment in factories consume a lot of energy during operation, which causes such equipment to generate a lot of heat during operation. Working parts are prone to being in a high temperature state. At this time, these large equipment need to be cooled, and cooling requires turning on new cooling equipment, which further increases the total power load at the power usage end. For the input end of the substation where the effective wind speed is lower than the standard effective wind speed, it is even more unable to provide additional power load, which ultimately leads to the loss of the equipment's working life.

[0089] In the present invention, when the wind speed at the input end of the substation is lower than the standard wind speed, the equipment at the power-using end is cooled in advance, thereby avoiding the energy consumption of the equipment in a high-temperature state, reducing the difficulty of cooling, and reducing the power load required for cooling. While ensuring the service life of the equipment at the power-using end, the power load provided by the input end of the substation can meet the power load demand of the power-using end, thereby improving the working stability of the equipment at the power-using end.

[0090] Specifically, the load anomaly processing module determines the adjustment amount of the equipment cooling standard at the power user end according to the difference between the power load fluctuation amount and the power load fluctuation amount under the same wind force condition in the historical data;

[0091] The adjustment amount of the equipment cooling standard is proportional to the difference.

[0092] In practice, the equipment cooling standard is the specified temperature at which the power-using-end equipment needs to be cooled. The unadjusted equipment cooling standard is generally determined based on the equipment's own usage parameters. In actual situations, when the temperature detection unit detects that the equipment temperature at the power-using-end reaches the equipment cooling standard, the power-using-end equipment begins to be cooled.

[0093] In order to achieve the effect of cooling down in advance, the standard temperature for cooling the equipment will be reduced. The adjustment amount of the equipment cooling standard △T=(△P1-△P0) / △P0×T0, △P1 is the power load fluctuation, △P0 is the power load fluctuation under the same wind conditions in historical data, and T0 is the equipment cooling standard temperature. If (△P1-△P0)<0, the equipment cooling standard will not be adjusted.

[0094] See also Figure 4 As shown, it is a logic diagram of determining whether a substation needs to perform power load compensation according to an embodiment of the present invention. The load abnormality processing module determines whether a substation needs to perform power load compensation, including:

[0095] If the maximum value of the power load of the equipment at the power-using end is greater than or equal to the minimum value of the power load at the input end of the substation, the substation needs to perform power load compensation;

[0096] If the maximum value of the power load of the equipment at the power-consuming end is less than the minimum value of the power load at the input end of the substation, the substation does not need to perform power load compensation.

[0097] Power load compensation can be achieved through any compensation method, such as dynamic reactive power compensation, using static VAR compensators (SVCs), static synchronous VAR compensators (STATCOMs) and other equipment to dynamically adjust reactive power output according to grid demand to stabilize grid voltage, or using energy storage systems, using battery energy storage systems (BESS) and other energy storage devices to quickly absorb or release energy when wind power fluctuates, smooth out fluctuations in wind power output, and improve grid stability. This is a prior art and is not specifically limited.

[0098] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A substation power load monitoring system, characterized in that: include: The load analysis module is connected to the power load detection device and the environment detection device respectively, and is used to calculate the power load fluctuation parameters according to the wind conditions and the voltage data and operating frequency at the input end of the substation to determine the abnormal load trend type in the current time period, including: If the power supply load fluctuation parameter is greater than or equal to the standard power supply load fluctuation parameter, the load abnormality trend type is an explicit load abnormality trend; If the power supply load fluctuation parameter is less than the standard power supply load fluctuation parameter, the load abnormality trend type is a hidden load abnormality trend; The load abnormality processing module is connected to the power load detection device, the environment detection device and the load analysis module respectively, and is used to control the input end of the substation and the power use end according to the load abnormality trend type, including: If the load abnormality trend type is an explicit load abnormality trend, the power load of the equipment at the power-using end in the current monitoring period is obtained and the fluctuation of the power load is calculated, the power overload characterization condition is determined to determine whether to cool down the equipment at the power-using end in advance, and the power load fluctuation amount is compared with the power load fluctuation amount under the same wind conditions in the historical data to determine the adjustment amount of the cooling standard of the equipment at the power-using end; If the load abnormality trend type is a hidden load abnormality trend, the maximum value of the power load of the equipment at the power consumption end is obtained and compared with the minimum value of the power load at the input end of the substation to determine whether the substation needs to perform power load compensation; The load analysis module calculates the power supply load fluctuation parameters according to the wind conditions and the voltage data and operating frequency at the input end of the substation. The power supply load fluctuation parameters are determined according to formula (1). ， In formula (1), K is the power supply load fluctuation parameter, v1 is the effective wind speed, v0 is the standard effective wind speed, Vi is the voltage value of the substation input terminal detected for the i-th time in the current monitoring period, V0 is the average voltage value of the substation input terminal in the historical monitoring period with the same wind conditions, is the operating frequency of the substation input terminal detected for the i-th time in the current monitoring time period, H0 is the average operating frequency of the substation input terminal in the historical monitoring time period with the same wind conditions, n is the number of detections, and i is an integer greater than 0.

2. The substation power load monitoring system according to claim 1, characterized in that: The power load detection device includes a power consumption end detection unit for detecting voltage data and current data of each device at the power consumption end, and a substation input end detection unit for detecting operating frequency and voltage data at the substation input end; The environmental detection device comprises a temperature detection unit for detecting the temperature of equipment at the power consumption end, and a wind force detection unit for continuously acquiring the wind force condition at the input end of the transformer substation.

3. The substation power load monitoring system according to claim 2, characterized in that: The environmental detection device is also used to divide the monitoring time into several monitoring time periods according to the continuously acquired wind conditions at the input end of the substation, including: To determine when the wind force level changes and when the wind direction changes; The monitoring time is divided according to the time when the wind force level changes and the time when the wind direction changes, to obtain several monitoring time periods.

4. The substation power load monitoring system according to claim 1, characterized in that: The load anomaly processing module determines the power load fluctuation parameter according to the instantaneous power load in the current monitoring time period, and the power load fluctuation parameter is determined according to formula (2): ， In formula (2), M is the power load fluctuation parameter, Pj is the power load at the power user end obtained for the jth time, P0 is the average power load at the power user end, m is the number of detections in the previous monitoring time period, and j is an integer greater than 0.

5. The substation power load monitoring system according to claim 4, characterized in that: The power overload characterization condition of the load anomaly processing module is that the power load fluctuation parameter corresponding to the equipment at the power usage end is greater than or equal to the standard power load fluctuation parameter, and the power load of the equipment is greater than a predetermined load threshold.

6. The substation power load monitoring system according to claim 5, characterized in that: The load abnormality processing module determines whether to cool down the equipment at the power consumption end in advance, including: If the power overload characterization condition is met, it is determined that the equipment at the power consumption end needs to be cooled down in advance; If the power overload characterization condition is not met, it is determined that there is no need to cool down the equipment at the power consumption end in advance.

7. The substation power load monitoring system according to claim 6, characterized in that: The load anomaly processing module determines the adjustment amount of the equipment cooling standard at the power user end according to the difference between the power load fluctuation amount and the power load fluctuation amount under the same wind force condition in the historical data; The adjustment amount of the equipment cooling standard is proportional to the difference.

8. The substation power load monitoring system according to claim 7, characterized in that: The load anomaly processing module determines whether the substation needs to perform power load compensation, including: If the maximum value of the power load of the equipment at the power-consuming end is greater than or equal to the minimum value of the power load at the input end of the substation, the substation needs to perform power load compensation; If the maximum value of the power load of the equipment at the power-consuming end is less than the minimum value of the power load at the input end of the substation, the substation does not need to perform power load compensation.

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