A flood prevention method for substation

Abstract

The present invention discloses a substation flood prevention method, which relates to the technical field of substation flood prevention. The method comprises: obtaining water level information of a water collection well and drainage flow information of a drainage system within a preset time period; determining the water inflow flow information of the water collection well within the preset time period according to the water level information of the water collection well within the preset time period and the drainage flow information of the drainage system; based on the water inflow flow information of the water collection well within the preset time period, using a prediction algorithm to predict the water inflow flow information of the water collection well within a target time period, the start time of the target time period being later than the end time of the preset time period; generating flood prevention information according to the water inflow flow information of the water collection well within the target time period. The water inflow flow information of the water collection well within the target time period can be predicted, and flood prevention information can be generated accordingly, and the flood prevention information can be used to inform the staff of the time when the danger occurs, or to prompt or control the opening and closing of the drainage system.

Description

Technical Field

[0001] The invention relates to the technical field of substation flood prevention, and in particular to a substation flood prevention method. Background Art

[0002] In the substation, the water collection well is at the lowest point of the entire substation. When the rainy season comes, the water in the substation will flow into the water collection well. When the water level in the water collection well reaches a certain height, a drainage pump is used to drain the water in the water collection well to prevent the power equipment in the substation from being submerged by rainwater and causing failures.

[0003] At present, some substations have installed intelligent flood control systems. These intelligent flood control systems are based on IoT sensor technology and automation technology. They can intelligently monitor the water level of the water collection well in the substation, control the drainage pump to drain water when the water level reaches the drainage level (preset value), and alarm when the water level exceeds the warning line (preset value). The existing intelligent flood control systems have the following problems:

[0004] 1. The intelligent flood prevention system cannot issue an early warning of the time when danger occurs, so staff cannot judge the importance of emergency repair tasks based on the early warning information.

[0005] 2. The drainage water level of the intelligent flood control system is a fixed value. When the rainfall is heavy, the drainage system will be controlled to drain water only when the water level reaches this fixed value. There is a danger that the water level in the collection well will exceed the warning line due to untimely drainage, causing damage to power equipment due to flooding.

[0006] Therefore, it is urgent to find a substation flood prevention method that can solve at least one of the above two problems. Summary of the invention

[0007] The purpose of the present invention is to provide a substation flood prevention method, which can predict the water inlet flow information of the sump within a target time period and generate flood prevention information based on it. The flood prevention information can be used to inform staff of the time when the danger occurs, or to prompt or control the opening and closing of the drainage system.

[0008] In order to achieve the above object, the present invention provides the following technical solution: a substation flood prevention method, comprising:

[0009] Obtaining water level information of the water collection well and drainage flow information of the drainage system within a preset time period;

[0010] Determine the water inflow flow information of the water collection well within the preset time period according to the water level information of the water collection well within the preset time period and the drainage flow information of the drainage system;

[0011] Based on the water inflow flow information of the water collection well in the preset time period, a prediction algorithm is used to predict the water inflow flow information of the water collection well in a target time period, wherein the start time of the target time period is later than the end time of the preset time period;

[0012] Flood control information is generated according to the water inflow information of the water collection well within the target time period.

[0013] Optionally, the preset time period and the target time period both include multiple time periods; determining the water inflow information of the water collection well within the preset time period according to the water level information of the water collection well within the preset time period and the drainage flow information of the drainage system may specifically include:

[0014] Calculate the difference between the amount of water accumulated in the water collection well at the end of the time period and the amount of water accumulated at the start of the time period to obtain the periodic water increase of each time period;

[0015] Calculate the periodic drainage volume of each time period according to the drainage flow information;

[0016] The sum of the periodic water increase and the periodic water discharge is calculated to obtain the periodic water inflow of each of the time periods, and the periodic water inflow of each of the time periods is determined as the water inflow flow information of the water collection well.

[0017] Optionally, based on the water inflow flow information of the water collection well in the preset time period, using a prediction algorithm to predict the water inflow flow information of the water collection well in a target time period may specifically include:

[0018] Based on the periodic water inflow of the water collection well in each of the time periods within the preset time period, an error tracking adaptive algorithm is used to calculate and obtain a weight coefficient;

[0019] Based on the weight coefficient, the periodic predicted water inflow of the water collection well in each of the time periods within the target time period is predicted to obtain the water inflow flow information of the water collection well in the target time period.

[0020] Optionally, generating flood control information according to the water inflow information of the water collection well within the target time period may specifically include:

[0021] Calculate the difference between the periodic predicted water inflow and the periodic preset water discharge of each time period within the target time period to obtain the periodic predicted water increase of each time period;

[0022] Calculate the sum of the periodic predicted water increase of each of the time periods between the target moment and the current moment within the target time period to obtain the predicted water increase of the water collection well at the target moment compared to the current moment;

[0023] Calculate the sum of the predicted water increase and the preset water accumulation at each target moment in the target time period to obtain the relationship between the predicted water accumulation and time of the water collection well in the target time period;

[0024] The flood prevention information is generated based on the relationship between the predicted water accumulation volume and time of the water collection well within the target time period.

[0025] Optionally, generating the flood control information according to the relationship between the predicted water volume of the water collection well within the target time period and time may specifically include:

[0026] Taking the periodic drainage volume of the time period corresponding to the current moment as the periodic preset drainage volume, taking the water accumulation volume of the water collection well at the current moment as the preset water accumulation volume, and judging whether the water level of the water collection well will reach the warning line of the water collection well within the target time period according to the relationship between the predicted water accumulation volume and time of the water collection well within the target time period;

[0027] If the water level of the collection well reaches the warning line within the target time period, the time when the water level of the collection well reaches the warning line is calculated, and the first flood control information is generated. The first flood control information is used for danger warning and includes the time when the danger occurs.

[0028] Optionally, generating the flood control information according to the relationship between the predicted water volume of the water collection well within the target time period and time may specifically include:

[0029] The drainage volume of a time period under the normal working state of the drainage system is used as the preset drainage volume of the period, the water accumulation volume of the water collection well at the current moment is used as the preset water accumulation volume, and according to the relationship between the predicted water accumulation volume and time of the water collection well in the target time period, it is judged whether the water level of the water collection well will reach the warning line of the water collection well in the target time period;

[0030] If the water level of the water collection well will reach the warning line within the target time period, the time when the water level of the water collection well reaches the warning line is calculated to generate second flood prevention information, which is used for pre-power outage warning.

[0031] Optionally, generating the flood control information according to the relationship between the predicted water volume of the water collection well within the target time period and time may specifically include:

[0032] The drainage volume of a time period under the normal working state of the drainage system is used as the preset drainage volume of the period, the water accumulation volume of the water collection well when the water level is the first preset threshold value is used as the preset water accumulation volume, and according to the relationship between the predicted water accumulation volume and time of the water collection well in the target time period, it is judged whether the water level of the water collection well will reach the warning line of the water collection well in the target time period;

[0033] If the water level of the water collection well reaches the warning line within the target time period, third flood prevention information is generated, and the third flood prevention information is used to prompt the drainage system to be turned on.

[0034] Optionally, the calculating of the time when the water level of the water collection well reaches the warning line before generating the first flood control information may also include:

[0035] Acquiring the operating electrical parameter information of the drainage pump of the drainage system within the preset time period;

[0036] The generating of the first flood prevention information specifically includes:

[0037] Determine whether the operating electrical parameters of the drainage pump are normal and whether the drainage flow rate at the current moment is normal;

[0038] If the drainage flow at the current moment is less than or equal to b times the rated drainage flow of the drainage system and the operating electrical parameters of the drainage pump are normal, it is determined that the drainage pipe of the drainage system is blocked or the drainage pipe is leaking, and the first flood prevention information also includes the blockage of the drainage pipe or the leakage of the drainage pipe, where b is an empirical value, b≤0.9.

[0039] Optionally, the calculating of the time when the water level of the water collection well reaches the warning line before generating the first flood control information may also include:

[0040] Acquiring the operating electrical parameter information of the drainage pump of the drainage system within the preset time period;

[0041] The generating of the first flood prevention information specifically includes:

[0042] Determine whether the operating electrical parameters of the drainage pump are normal and whether the drainage flow rate at the current moment is normal;

[0043] If the drainage flow rate is less than or equal to c times the rated drainage flow rate of the drainage system and the operating current of the drainage pump drops by d, it is determined that the water inlet of the drainage pump is blocked, and the first flood prevention information also includes that the water inlet of the drainage pump is blocked, wherein c and d are empirical values, 0.1≤c≤0.3, 10%≤d≤30%.

[0044] Optionally, the calculating of the time when the water level of the water collection well reaches the warning line before generating the first flood control information may also include:

[0045] Acquiring the operating electrical parameter information of the drainage pump of the drainage system within the preset time period;

[0046] The generating of the first flood prevention information specifically includes:

[0047] Determine whether the operating electrical parameters of the drainage pump are normal and whether the drainage flow rate at the current moment is normal;

[0048] If the drainage flow rate is less than or equal to e times the rated drainage capacity of the drainage system and the operating current of the drainage pump rises by f, it is determined that the water inlet of the drainage pump is blocked and the drainage pipe is blocked, and the first flood prevention information also includes that the water inlet of the drainage pump is blocked and the drainage pipe is blocked, where e and f are empirical values, e≤0.1, f≥20%.

[0049] The present invention has the following beneficial effects: the substation flood prevention method provided by the present invention can predict the water inflow flow information of the water collection well within the target time period, and generate flood prevention information accordingly, and the flood prevention information can be used to inform the staff of the time when the danger occurs, or to prompt or control the opening and closing of the drainage system. The staff can judge the urgency of the emergency repair tasks according to the flood prevention information. Or the drainage system can be controlled to open before the water level reaches a preset fixed value when the rainfall is heavy, so as to avoid the risk of power equipment being submerged due to untimely drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0051] Figure 1 A flow chart of the flood prevention method for substations;

[0052] Figure 2 This is a schematic diagram of the water collection well inlet flow, outlet flow and water level.

[0053] Reference numerals:

[0054] 1. Water collection well. DETAILED DESCRIPTION

[0055] In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same items or similar items with basically the same functions and effects. For example, the first threshold and the second threshold are only used to distinguish different thresholds, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0056] It should be noted that, in the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present invention should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0057] Reference Figure 1 , the substation flood prevention method provided by the present invention is described. Since the water collection well is at the lowest point of the substation, when the water in the water collection well cannot be discharged in time, there is a risk of backflow into the cable trench and flooding other power equipment.

[0058] The present invention provides a substation flood prevention method, which can be applied to substation flood prevention or flood prevention in other places similar to substations, including:

[0059] S1: Obtaining water level information of the water collection well 1 and drainage flow information of the drainage system within a preset time period.

[0060] The acquisition method can be: periodically acquiring the water level (or water volume) of the water collection well 1, and the water level (or water volume) of the water collection well 1 at each moment is the water level information; periodically acquiring the drainage flow of the drainage system, and the drainage flow of the water collection well 1 at each moment is the drainage flow information. For example, assuming that the water collection well 1 is a rectangular parallelepiped with a bottom area of ​​S j , at t 0 ,t 1 ,t 2 ...t i ...t n Time (time interval is T, t n The time is the current time, t 0 to n The time is the preset time period), and the water level of the water collection well 1 is measured to be h 0 、h 1 、h 2 ...h i ...h n , the drainage flow of the drainage system is q 0 ,q 1,q 2 ...q i ...q n , measured directly by the flow sensor, the amount of water in the water collection well 1 is V 0 、V 1 、V 2 ...V i ...V n , the corresponding time period is T 1 , T 2 ...T i ...T n , T i =t i -t i-1 For a water collection well 1, there is a fixed functional relationship between the water volume and the water level. In this example, V i =S j *h i .

[0061] S2: Determine the water inflow information of the water collection well 1 within a preset time period based on the water level information of the water collection well 1 within a preset time period and the drainage flow information of the drainage system.

[0062] Specifically, the difference between the water volume of the water collection well 1 at the end of the time period and the water volume at the start of the time period is calculated to obtain the periodic water increase of each time period. 1 , T 2 ...T i ...T n The corresponding periodic water increase is

[0063]

[0064] ...

[0066] ...

[0068]

[0069] Calculate the periodic drainage volume of each time period based on the drainage flow information. 1 , T 2 ...T i ...T n The corresponding cycle discharge is An approximate calculation method is:

[0070]

[0071] ...

[0073] ...

[0075]

[0076] The sum of the periodic water increase and the periodic drainage is calculated to obtain the periodic water inflow of each time period, and the periodic water inflow of each time period is determined as the water inflow flow information of the water collection well 1. 1 , T 2 ...T i ...T n The corresponding periodic water increase is

[0077]

[0078] ...

[0080] ...

[0082]

[0083] S3: Based on the water inflow flow information of the water collection well 1 within the preset time period, a prediction algorithm is used to predict the water inflow flow information of the water collection well 1 within the target time period, and the start time of the target time period is later than the end time of the preset time period.

[0084] One prediction method is: based on the periodic water inflow of the water collection well 1 in each time period within a preset time period, an error tracking adaptive algorithm is used to calculate and obtain a weight coefficient; the weight coefficient is μ 1 , μ 2 ... N Formula (1), formula (2), formula (3) and formula (4) are used to calculate the periodic water inflow of each time period within the preset time period. Iterate to adjust the weight coefficient μ 1 , μ 2 ... N The final weight coefficient is obtained by continuous correction.

[0085]

[0086] if Then

[0087]

[0088]

[0089] Among them, t 0 is the initial time, t n is the current moment, t n Time to t n+m The time between is the target time period, t n+ 1 ...t n+m is the target time, T 1 ...T n t 0 Time to t n n cycles within the time period of time, T 1 ...T n The actual value of the cycle water inflow, is the predicted value of the cycle water inflow in the k+1th cycle, for is the actual value of the cycle water inflow in the k-i+1th cycle, L i is the periodic precipitation predicted according to the precipitation in the weather forecast, a is the proportionality coefficient (preferably selected in the range of 0.15-0.35), S is the empirical coefficient, e is the area of ​​the substation, μ i is the weight coefficient of the actual value of the periodic water inflow in the k-i+1th period, N is the number of weight coefficients, 1≤i≤N, μ i is the i-th weight before adjustment, μ' i is the adjusted i-th weight, k is the learning constant, T k+1 The prediction error of the cycle water inflow;

[0090] Taking N as 3 as an example, for μ 1 , μ 2 , μ 3 Assign an initial value, μ 1 , μ 2 , μ 3 The initial value of is set to 0.5. Substituting into the right side of formula (1), we get the predicted value

[0091]

[0092] if Then

[0093] The predicted value With actual value Substituting into formula (3) we get the prediction error

[0094]

[0095] Will Substituting into formula (4) for μ 1 , μ 2 , μ 3 Make a correction and assign an empirical value to k. After correction,

[0096]

[0097]

[0098]

[0099] Will And the corrected μ 1 , μ 2 , μ 3 Substituting into formula (1), we get the predicted value

[0100] if Then

[0101] The predicted value With actual value Substituting into formula (3) we get the prediction error

[0102]

[0103] Will Substitute into formula (4) and calculate the corrected μ 1 , μ 2 , μ 3 After correction,

[0104]

[0105]

[0106]

[0107] Iterate in sequence until all the periodic water inflows of each time period are processed and the corrected weight coefficients are obtained.

[0108] Based on the weight coefficient, the periodic predicted water inflow of the water collection well 1 in each time period within the target time period is predicted to obtain the water inflow flow information of the water collection well 1 in the target time period.

[0109] Based on the weight coefficient after the most recent revision, the periodic predicted water inflow of each period within the target time period is predicted using formula (1) and formula (2). When formula (1) is substituted, if there is no actual value of the periodic water inflow of the k-i+1th period on the right side of formula (1), the predicted value of the periodic water inflow of the k-i+1th period is used as the actual value to predict the periodic water inflow of the k+1th period.

[0110]

[0111] if Then

[0112]

[0113] if Then

[0114]

[0115] if Then ...

[0117]

[0118] if Then

[0119] In this way, the periodic predicted water inflow of each time period in the target time period is obtained. This method adopts the error tracking adaptive algorithm and integrates the precipitation of the weather forecast to process the periodic water inflow and predict the periodic predicted water inflow. Since the weight coefficient is continuously updated and corrected based on the actual water inflow, the prediction can be made more accurate and the development of the flood situation can be followed up in time.

[0120] S4: Generate flood control information based on the water inflow information of the water collection well 1 within the target time period.

[0121] Specifically, the difference between the periodic water inflow and the periodic preset water discharge of each time period within the target time period is calculated to obtain the periodic predicted water increase of each time period. The periodic predicted water increase is The preset drainage volume for each time period within the target time period is Here you can set the periodic preset drainage volume to a fixed value.

[0122]

[0123] ...

[0125]

[0126] Calculate the sum of the periodic predicted water increase in each time period between the target time and the current time within the target time period to obtain the predicted water increase of the water collection well 1 at the target time compared with the current time. The predicted water increase is

[0127]

[0128] ...

[0130]

[0131] Calculate the sum of the predicted water increase and the preset water accumulation at each target time in the target time period to obtain the relationship between the predicted water accumulation and time of the water collection well 1 in the target time period. The preset water accumulation is V. The predicted water accumulation at the target time is:

[0132]

[0133] ...

[0135]

[0136] Of course, a curve fitting can be performed on the predicted water accumulation at the target time to obtain the predicted water accumulation at any time within the target time period, and a curve graph of the predicted water accumulation and time can be obtained.

[0137] Flood control information is generated based on the relationship between the predicted water accumulation volume and time of the water collection well 1 within the target time period.

[0138] The present invention collects water level information and drainage flow information within a preset time period, calculates the water inflow flow information within the preset time period, and predicts the water inflow flow information within the target time period based on the water inflow flow information within the preset time period. Based on the water inflow flow information within the target time period, the periodic preset drainage volume of different preset water accumulation volumes is added, and the relationship between the predicted water accumulation volume and time of the water collection well 1 within different target time periods can be obtained.

[0139] First, it can predict the time when the danger will occur. The generated flood control information can be used for early warning. During the early warning, it can tell the staff the time when the danger will occur so that the staff knows the urgency of the danger and can make different emergency responses according to the time when the danger occurs.

[0140] Second, it is possible to predict whether a danger will occur within the target time period, and the generated flood control information can be used to prompt whether to open the drainage system. In the existing drainage system, when the water level reaches the first preset threshold, the drainage system is turned on, and when it is lower than the first preset threshold, the drainage system is closed. In this way, if the amount of rain is large, the drainage will not be opened until the water level reaches the first preset threshold, and the drainage will not be timely, and there will be a risk of overflow due to the late opening of the drainage system. The present invention can decide whether to open the drainage system in advance based on whether the danger will occur.

[0141] The first case is that when the drainage system is in the open state and the corresponding periodic drainage volume at the current moment is When the drainage volume is less than the normal working volume of the drainage system, it can be determined that the drainage system has failed and the preset drainage volume is set. Equal to the cycle discharge corresponding to the current moment Let the preset water volume V be equal to the current water volume V n , obtain the relationship between the predicted water volume and time of the water collection well 1 within the target time period;

[0142] Determine whether the water level of water collection well 1 will reach the warning line of water collection well 1 within the target time period;

[0143] If the water level of the collection well 1 reaches the warning line within the target time period, the time when the water level of the collection well 1 reaches the warning line is calculated, and the first flood control information is generated. The first flood control information is used for danger warning and includes the time when the danger occurs.

[0144] In this way, the first flood control information can be used for fault warning, which can inform the staff that the drainage system has failed and how long it will take for the danger to occur in the fault state. In this way, the staff can make full preparations according to the time and carry out emergency repairs. In the case that multiple drainage systems fail and there are not enough people, it can be decided which one to repair first according to the time when the danger occurs.

[0145] Of course, there are many forms of early warning for the time of danger. The time of danger can be segmented, and different segments correspond to different early warning levels. For example, within 1 hour corresponds to level 0 (the most dangerous level), between 1 hour and 2 hours corresponds to level 1...

[0146] Of course, the exact time when the danger occurs can also be directly displayed on the display screen.

[0147] It should be noted that n The time is the current time, and the forecast is made at the current time, and the flood control information is generated. The current time is constantly changing, and the preset time period and target time period are also constantly changing.

[0148] The second case is to use the drainage volume of a period of time under normal working conditions of the drainage system as the preset drainage volume of the period. The water volume V of water collection well 1 at the current moment n As the preset water volume V, the relationship between the predicted water volume and time of the water collection well 1 in the target time period is obtained, and it can be judged whether the water level of the water collection well 1 will reach the warning line of the water collection well 1 in the target time period when there is no failure in the drainage system;

[0149] If the water level of the water collection well 1 reaches the warning line within the target time period, the time when the water level of the water collection well 1 reaches the warning line is calculated, and the second flood control information is generated. The second flood control information is used for pre-power failure warning.

[0150] In this way, it can be determined that when there is no failure in the drainage system, the sump 1 still has the risk of overflow. In this case, the staff can decide whether to cut off the power supply to the key equipment according to the situation to avoid the expansion of the danger.

[0151] The third case is to use the drainage volume of a period of time under normal working conditions of the drainage system as the preset drainage volume of the period. The water volume of the water collection well 1 when the water level is the first preset threshold is used as the preset water volume V, and according to the relationship between the predicted water volume of the water collection well 1 and time in the target time period, it is judged whether the water level of the water collection well 1 will reach the warning line of the water collection well 1 in the target time period;

[0152] If the water level of the water collection well 1 reaches the warning line within the target time period, the third flood prevention information is generated, and the third flood prevention information is used to prompt to open the drainage system.

[0153] In this way, it can be determined whether the drainage system is turned on when the water level reaches the first preset threshold, and whether the water level will reach the warning line within the target time period. If it will reach the warning line, the drainage system will be prompted or controlled to be turned on to avoid danger caused by untimely opening of the drainage system (in the prior art, the drainage system is only turned on when the water level reaches the first preset threshold). The third flood control information can prompt the staff to turn on the drainage system, or it can be an instruction to directly control the opening of the drainage system. When it is determined that the water level is below the first preset threshold and the water level will not reach the warning line within the target time period, the drainage system will be prompted or controlled to be closed.

[0154] On the basis of the first case, a step of obtaining the operating electrical parameter information of the drainage pump of the drainage system within a preset time period is added.

[0155] When generating flood prevention information, determine whether the operating electrical parameters of the drainage pump are normal and whether the drainage flow rate at the current moment is normal; compare the operating electrical parameters of the drainage pump with the operating electrical parameters of the drainage pump in a normal state, and compare the drainage flow rate at the current moment with the drainage flow rate under the normal state of the drainage system.

[0156] If the drainage flow at the current moment is less than or equal to b times the rated drainage flow of the drainage system and the operating electrical parameters of the drainage pump are within the rated range (that is, the operating electrical parameters of the drainage pump are normal), then it is determined that the drainage pipe of the drainage system is blocked or the drainage pipe is leaking. The first flood control information also includes the blockage of the drainage pipe or the leakage of the drainage pipe, where b is an empirical value, b≤0.9, and b is preferably 0.8.

[0157] Through comprehensive analysis of the operating electrical parameters of the drainage pump and the drainage flow, the specific cause of the drainage system failure can be determined. When the first flood prevention information is generated, the staff can also be informed that the drainage pipe is blocked or leaking. When the staff is performing emergency repairs, they can directly inspect and repair the drainage pipe to reduce the emergency repair time.

[0158] If the drainage flow rate is less than or equal to c times the rated drainage flow rate of the drainage system and the operating current of the drainage pump drops by d, it is determined that the water inlet of the drainage pump is blocked. The first flood prevention information also includes that the water inlet of the drainage pump is blocked, where c and d are empirical values, 0.1≤c≤0.3, 10%≤d≤30%, where c is preferably 0.2 and d is preferably 20%.

[0159] At this time, the first flood prevention information can inform the staff of the blockage and danger time of the drainage pump inlet. The staff can directly inspect and repair the drainage pump to reduce the repair time.

[0160] If the drainage flow rate is less than or equal to e times the rated drainage capacity of the drainage system and the operating current of the drainage pump rises by f, it is determined that the drainage pump inlet is blocked and the drainage pipe is blocked. The first flood control information also includes that the drainage pump inlet is blocked and the drainage pipe is blocked, where e and f are empirical values, e≤0.1, f≥20%.

[0161] At this time, the first flood prevention information can inform the staff that the water inlet of the drainage pump is blocked and the drainage pipe is blocked. The staff needs to inspect and repair the drainage pump and drainage pipe to reduce the emergency repair time.

[0162] Because only when the water inlet of the drain pump is blocked and the drainage pipe is blocked at the same time, that is, the inlet and outlet of the drain pump are both blocked, the resistance of the water in the drain pump casing will cause the current of the drain pump to increase.

[0163] Although the present invention is described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality of components. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0164] Although the present invention has been described in conjunction with specific features and embodiments thereof, it is apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present invention. Accordingly, this specification and the accompanying drawings are merely exemplary illustrations of the present invention as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present invention. Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, the present invention is intended to include such modifications and variations if they fall within the scope of the claims of the present invention and their equivalents.

Claims

1. A flood prevention method for a substation, characterized in that: include: Obtaining water level information of the water collection well and drainage flow information of the drainage system within a preset time period; Determine the water inflow flow information of the water collection well within the preset time period according to the water level information of the water collection well within the preset time period and the drainage flow information of the drainage system; Based on the periodic water inflow of the water collection well in each time period within the preset time period, an error tracking adaptive algorithm is used to calculate and obtain a weight coefficient; Predicting the periodic predicted water inflow of the water collection well in each of the time periods within the target time period based on the weight coefficient, obtaining the water inflow flow information of the water collection well within the target time period, wherein the start time of the target time period is later than the end time of the preset time period; Generate flood control information according to the water inflow information of the water collection well within the target time period; Wherein, the preset time period includes a plurality of time periods, and the water inflow information within the time period includes: the periodic water inflow of each of the time periods; The error tracking adaptive algorithm is used to obtain the weight coefficient, and the periodic water inflow of each time period within the preset time period is iterated by the following formula to continuously correct the weight coefficient: ； if , then let = ; ； ； Wherein, t0 is the initial time, tn is the current time, the time between tn and tn+m is the target time period, tn+1...tn+m is the target time, T1...Tn is the n cycles in the time period between t0 and tn, ... is the actual value of the cycle water inflow of T1...Tn, is the predicted value of the cycle water inflow in the k+1th cycle, is the actual value of the cycle water inflow in the k-i+1th cycle, is the predicted periodic precipitation obtained based on the precipitation in the weather forecast, a is the proportionality coefficient, is the area occupied by the substation, is the weight coefficient of the actual value of the periodic water inflow in the k-i+1th period, N is the number of weight coefficients, , is the i-th weight before adjustment, is the adjusted i-th weight, k is the learning constant, for The prediction error of the cycle water inflow.

2. The substation flood prevention method according to claim 1, characterized in that: The step of determining the water inflow information of the water collection well within the preset time period according to the water level information of the water collection well within the preset time period and the drainage flow information of the drainage system specifically includes: Calculate the difference between the amount of water accumulated in the water collection well at the end of the time period and the amount of water accumulated at the start of the time period to obtain the periodic water increase of each time period; Calculate the periodic drainage volume of each time period according to the drainage flow information; The sum of the periodic water increase and the periodic water discharge is calculated to obtain the periodic water inflow of each of the time periods, and the periodic water inflow of each of the time periods is determined as the water inflow flow information of the water collection well.

3. The substation flood prevention method according to claim 1, characterized in that: The generating flood control information according to the water inflow flow information of the water collection well within the target time period specifically includes: Calculate the difference between the periodic predicted water inflow and the periodic preset water discharge of each time period within the target time period to obtain the periodic predicted water increase of each time period; Calculate the sum of the periodic predicted water increase of each of the time periods between the target moment and the current moment within the target time period to obtain the predicted water increase of the water collection well at the target moment compared to the current moment; Calculate the sum of the predicted water increase and the preset water accumulation at each target moment in the target time period to obtain the relationship between the predicted water accumulation and time of the water collection well in the target time period; The flood prevention information is generated based on the relationship between the predicted water accumulation volume and time of the water collection well within the target time period.

4. The substation flood prevention method according to claim 3, characterized in that: The generating of the flood control information according to the relationship between the predicted water volume of the water collection well and time within the target time period specifically includes: Taking the periodic drainage volume of the time period corresponding to the current moment as the periodic preset drainage volume, taking the water accumulation volume of the water collection well at the current moment as the preset water accumulation volume, and judging whether the water level of the water collection well will reach the warning line of the water collection well within the target time period according to the relationship between the predicted water accumulation volume and time of the water collection well within the target time period; If the water level of the collection well reaches the warning line within the target time period, the time when the water level of the collection well reaches the warning line is calculated, and the first flood control information is generated. The first flood control information is used for danger warning and includes the time when the danger occurs.

5. The substation flood prevention method according to claim 3, characterized in that: The generating of the flood control information according to the relationship between the predicted water volume of the water collection well and time within the target time period specifically includes: The drainage volume of a time period under the normal working state of the drainage system is used as the preset drainage volume of the period, the water accumulation volume of the water collection well at the current moment is used as the preset water accumulation volume, and according to the relationship between the predicted water accumulation volume and time of the water collection well in the target time period, it is judged whether the water level of the water collection well will reach the warning line of the water collection well in the target time period; If the water level of the water collection well will reach the warning line within the target time period, the time when the water level of the water collection well reaches the warning line is calculated to generate second flood prevention information, which is used for pre-power outage warning.

6. The substation flood prevention method according to claim 3, characterized in that: The generating of the flood control information according to the relationship between the predicted water volume of the water collection well and time within the target time period specifically includes: The drainage volume of a time period under the normal working state of the drainage system is used as the preset drainage volume of the period, the water accumulation volume of the water collection well when the water level is the first preset threshold value is used as the preset water accumulation volume, and according to the relationship between the predicted water accumulation volume and time of the water collection well in the target time period, it is judged whether the water level of the water collection well will reach the warning line of the water collection well in the target time period; If the water level of the water collection well reaches the warning line within the target time period, third flood prevention information is generated, and the third flood prevention information is used to prompt the drainage system to be turned on.

7. The substation flood prevention method according to claim 4, characterized in that: Before calculating the time when the water level of the water collection well reaches the warning line and generating the first flood control information, the method further includes: Acquiring the operating electrical parameter information of the drainage pump of the drainage system within the preset time period; The generating of the first flood prevention information specifically includes: Determine whether the operating electrical parameters of the drainage pump are normal and whether the drainage flow rate at the current moment is normal; If the drainage flow at the current moment is less than or equal to b times the rated drainage flow of the drainage system and the operating electrical parameters of the drainage pump are normal, it is determined that the drainage pipe of the drainage system is blocked or the drainage pipe is leaking, and the first flood prevention information also includes the blockage of the drainage pipe or the leakage of the drainage pipe, where b is an empirical value, b≤0.

9.

8. The substation flood prevention method according to claim 4, characterized in that: Before calculating the time when the water level of the water collection well reaches the warning line and generating the first flood control information, the method further includes: Acquiring the operating electrical parameter information of the drainage pump of the drainage system within the preset time period; The generating of the first flood prevention information specifically includes: Determine whether the operating electrical parameters of the drainage pump are normal and whether the drainage flow rate at the current moment is normal; If the drainage flow rate is less than or equal to c times the rated drainage flow rate of the drainage system and the operating current of the drainage pump drops by d, it is determined that the water inlet of the drainage pump is blocked, and the first flood prevention information also includes that the water inlet of the drainage pump is blocked, wherein c and d are empirical values, 0.1≤c≤0.3, 10%≤d≤30%.

9. The substation flood prevention method according to claim 4, characterized in that: Before calculating the time when the water level of the water collection well reaches the warning line and generating the first flood control information, the method further includes: Acquiring the operating electrical parameter information of the drainage pump of the drainage system within the preset time period; The generating of the first flood prevention information specifically includes: Determine whether the operating electrical parameters of the drainage pump are normal and whether the drainage flow rate at the current moment is normal; If the drainage flow rate is less than or equal to e times the rated drainage volume of the drainage system and the operating current of the drainage pump rises by f, it is determined that the water inlet of the drainage pump is blocked and the drainage pipe of the drainage system is blocked, and the first flood prevention information also includes the blockage of the water inlet of the drainage pump and the blockage of the drainage pipe, where e and f are empirical values, e≤0.1, f≥20%.

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