CN113011679A

CN113011679A - Hydropower station flood discharge and power generation combined operation regulation and control method and device and electronic equipment

Info

Publication number: CN113011679A
Application number: CN202110387620.5A
Authority: CN
Inventors: 汪文元; 何滔; 王孝群; 龙岩; 汪广明; 卢玉龙; 李理想
Original assignee: Guoneng Dadu River Shaping Power Generation Co ltd; Hebei University of Engineering
Current assignee: Guoneng Dadu River Shaping Power Generation Co ltd; Hebei University of Engineering
Priority date: 2021-04-10
Filing date: 2021-04-10
Publication date: 2021-06-22

Abstract

The invention provides a hydropower station flood discharge and power generation combined operation regulation and control method, a device and electronic equipment, wherein the method comprises the following steps: determining the initial water level height of a pre-set time period before the hydroelectric power station dam according to the water level simulation parameter information and a pre-set water level prediction model; comparing the initial water level height with a preset water level height threshold range; if the initial water level height is higher than the upper limit value of the water level height threshold range, executing a water level over-upper limit regulation step to determine a regulation instruction; or if the initial water level is lower than the lower limit value of the water level height threshold range, executing a water level over-lower limit regulation step to determine a regulation instruction; or, if the initial water level height is within the water level height threshold range, executing the water level non-overrun regulation step to determine a regulation instruction; and regulating and controlling the opening degree and the load of the gate according to the regulating and controlling instruction. The method can efficiently and quickly carry out the combined operation regulation and control process of flood discharge and power generation of the hydropower station, and finally ensure the long-term stable and safe operation of the hydropower station.

Description

Hydropower station flood discharge and power generation combined operation regulation and control method and device and electronic equipment

Technical Field

The invention relates to the technical field of hydropower station dispatching management and control, in particular to a hydropower station flood discharge and power generation combined operation regulation and control method, a device and electronic equipment.

Background

Water resources usually have remarkable river basin characteristics, runoff distribution in most rivers and the annual period is not uniform in China, and throttling amount in dry seasons is greatly different, so that the water resources are not uniformly distributed in time and space. Therefore, building a hydropower station with good adjustability and implementing runoff adjustment are important measures for fully utilizing water resources. In order to meet the requirements of flood control, power generation, full utilization of water resources and other comprehensive utilization, cascade hydropower stations are generally established in a drainage basin.

The existing hydropower station is generally subjected to the conditions of small water level control interval, low unit working water head, large flow in flood season and flat season and large unit vibration interval, and is easily influenced by various factors such as a water level reservoir capacity curve, water flow time lag, hydrological meteorology, power station scheduling, subjective human intervention and the like due to the combined control of the hydroelectric power generation and the flood discharge gate of the hydropower station, the self reservoir capacity of the hydropower station is usually small, the hydropower station is very sensitive to the incoming flow response of frequent change of an upstream step power station, and the change of various influence factors is combined, so that the conditions of frequent action of the flood discharge gate and cumulative frequency of hydropower station load adjustment in the combined control are caused, and after the hydropower station runs for a long time, the conditions that the health state of the hydropower station units of the hydropower station is damaged, flood discharge facilities, hydraulic buildings and the like are damaged to different degrees can also occur.

In the prior art, a method for coordinately controlling the load distribution of the hydropower station and the water for power generation is also proposed, but generally, after a load value is calculated according to a load distribution algorithm, the load of the load value is directly distributed to the hydropower station so that the hydropower station operates according to the load. The regulation and control measures of the method are unilateral and the regulation and control error is large.

Disclosure of Invention

The invention provides a hydropower station flood discharge and power generation combined operation regulation and control method, a device and electronic equipment, which are used for overcoming the defects that the existing regulation and control measures are unilateral and the regulation and control errors are large in the prior art.

The invention provides a hydropower station flood discharge and power generation combined operation regulation and control method, which comprises the following steps:

determining the initial water level height of a pre-set time period before the hydroelectric power station dam according to the water level simulation parameter information and a pre-set water level prediction model;

comparing the initial water level height with a preset water level height threshold range;

if the initial water level height is higher than the upper limit value of the water level height threshold range, executing a water level over-upper limit regulation step to determine a regulation instruction;

or if the initial water level height is lower than the lower limit value of the water level height threshold range, executing a water level over-lower limit regulation step to determine a regulation instruction;

or, if the initial water level height is within the water level height threshold range, executing a water level non-overrun regulation step to determine a regulation instruction;

and regulating and controlling the opening degree and the load of the gate according to the regulating and controlling instruction.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, the water level simulation parameter information comprises the initial gate opening and the initial planned load in a preset time period.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, if the initial water level height is higher than the upper limit value of the water level height threshold range, the step of regulating and controlling the water level to exceed the upper limit value is executed to determine a regulation and control instruction, and the method comprises the following steps of:

determining an updated planned load at the next detection time, wherein the updated planned load at the next detection time is the initial planned load plus a load adjustable margin; wherein, the next detection time and the current detection time are separated by a fixed time;

updating the water level simulation parameter information according to the updated planned load at the next detection moment, and re-determining the current water level height of the hydropower station dam in a preset time period according to the updated water level simulation parameter information and the water level prediction model;

judging whether the current water level height is still higher than the upper limit value of the water level height threshold range;

if the current time is still higher than the upper limit value, detecting whether the updated planned load of each next detection time after the current time is not adjustable any more: if the current water level is still adjustable, continuously determining the planned load after the next detection moment is updated so as to re-determine the current water level height, and re-judging whether the current water level height is higher than the upper limit value; if the water level is not adjustable, the opening degree of the gate is increased until the water level in a future preset time period does not exceed the upper limit value;

and if the load is not higher than the upper limit value, generating a corresponding load regulation instruction and a corresponding gate opening regulation instruction.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, if the initial water level height is lower than the lower limit value of the water level height threshold range, the water level exceeding lower limit regulation and control step is executed to determine a regulation and control instruction, and the method comprises the following steps:

detecting the current gate opening and judging whether the gate is completely closed;

if the gate is not completely closed, after the gate opening is adjusted downwards to re-determine the current water level height in a preset time period before the hydroelectric power station dam, judging whether the current water level height is still lower than the lower limit value of the water level height threshold range; if the current opening degree of the gate is still lower than the lower limit value, re-detecting the current opening degree of the gate and judging whether the gate is completely closed;

if the gate is completely closed, after the planned load after the update of the next detection moment is determined and the current water level height of the hydropower station dam in the preset time period is re-determined according to the planned load, judging whether the current water level height is still lower than the lower limit value of the water level height threshold range; if the water level is still lower than the lower limit value, continuously adjusting the load until the water level height in a future preset time period is not lower than the lower limit value;

and if the current water level is not lower than the lower limit value, generating a corresponding load regulation instruction and a corresponding gate opening regulation instruction.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, if the gate is not completely closed, after the gate opening is adjusted downwards to re-determine the current water level height in a preset time period before the hydropower station dam, whether the current water level height is still lower than the lower limit value is judged, and if the current water level height is still lower than the lower limit value, the current gate opening is re-detected and whether the gate is completely closed is judged, including:

if the gate is not fully closed, adjusting the opening degree of the gate downwards once, and determining the updated opening degree of the gate, wherein the updated opening degree of the gate is the opening degree of the gate which is adjusted downwards once;

updating the water level simulation parameter information according to the updated gate opening, and re-determining the current water level height of the hydropower station dam in a preset time period according to the updated water level simulation parameter information and the water level prediction model;

judging whether the current water level is still lower than the lower limit value;

if the current opening degree of the gate is still lower than the lower limit value, the current opening degree of the gate is detected again, and whether the gate is completely closed is judged.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, if the gate is completely closed, after the planned load after update at the next detection moment is determined and the current water level height of the hydropower station in the preset time period before the dam is re-determined according to the planned load, whether the current water level height is still lower than the lower limit value of the water level height threshold range is judged, and if the current water level height is still lower than the lower limit value, the load is continuously adjusted until the water level height in the future preset time period is not lower than the lower limit value, and the method comprises the following steps:

if the gate is completely closed, determining the updated planned load at the next detection time, wherein the updated planned load at the next detection time is the initial planned load-load adjustable margin; wherein, the next detection time and the current detection time are separated by a fixed time;

judging whether the current water level height is still lower than the lower limit value of the water level height threshold range;

and if the water level height is still lower than the lower limit value, setting the updated planned load at the next detection time to be half of the updated planned load at the next detection time until the water level height in a future preset time period is not lower than the lower limit value.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, a first reference value and a second reference value of a water level height are set, a lower limit value of a threshold range of the water level height is less than a lower limit value of the threshold range of the water level height, the first reference value is less than a lower limit value of the threshold range of the water level height, the second reference value is less than an upper limit value of the threshold range of the water level height, and if the initial water level height is in the threshold range of the water level height, a water level non-overrun regulation and control step is executed to determine a regulation and:

comparing the initial water level height with the first reference value and the second reference value, respectively;

when the initial water level height is lower than the first reference value, detecting the opening degree of the current gate and judging whether the gate is completely closed; if the gate is not completely closed, the opening degree of the gate is adjusted downwards to re-determine the current water level height of the hydropower station dam in a preset time period until the current water level height is not lower than the first reference value; if the gate is completely closed, determining the planned load after updating at the next detection moment, and re-determining the current water level height of the hydropower station dam in a preset time period according to the planned load until the current water level height is not lower than the first reference value; wherein the updated planned load at the next detection time is the initial planned load-load adjustable margin; wherein, the next detection time and the current detection time are separated by a fixed time;

or when the initial water level height is larger than the second reference value, determining the planned load after updating at the next detection moment, and accordingly re-determining the current water level height of the hydropower station in a preset time period before the dam until the current water level height is not higher than the second reference value; wherein the updated planned load at the next detection time is equal to the initial planned load plus the load adjustable margin; wherein, the next detection time and the current detection time are separated by a fixed time;

or, when the first reference value is less than the initial water level height and less than the second reference value, judging whether the load at the last detection moment is the load adjusted on the basis of the initial planned load; if the current detection time is not adjusted or is adjusted and the actual adjustment time exceeds the preset adjustment time, the load regulation and control are not carried out at the current detection time; if the adjustment is carried out and the actual adjustment time does not exceed the preset adjustment time, carrying out load regulation and control at the current moment according to the load adjustment condition at the last detection moment;

and generating a corresponding load regulation instruction and a corresponding gate opening regulation instruction.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, the load adjustable margin is an optimal load adjustable margin value of the current hydropower station determined according to the initial water level height of the current hydropower station and a load adjustable margin calculation model; the load-adjustable allowance calculation model is pre-trained based on gate opening data, gate action times, average water head data, generated water quantity data, flood discharge water quantity data and average power generation efficiency data in the current hydropower station historical time period and combined with a deep learning algorithm.

The invention also provides a hydropower station flood discharge and power generation combined operation regulation and control device, which comprises:

the water level prediction module is used for determining the initial water level height of the hydropower station dam in a preset time period according to the water level simulation parameter information and a preset water level prediction model;

the comparison module is used for comparing the initial water level height with a preset water level height threshold range;

the execution module is used for executing the water level upper limit regulation step to determine a regulation instruction if the initial water level height is higher than the upper limit value of the water level height threshold range; or, if the initial water level height is lower than the lower limit value of the water level height threshold range, executing a water level over-lower limit regulation step to determine a regulation instruction; or, if the initial water level height is within the water level height threshold range, executing a water level non-overrun regulation step to determine a regulation instruction;

and the regulating module is used for regulating and controlling the opening and the load of the gate according to the regulating and controlling instruction.

The invention also provides an electronic device, which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein when the processor executes the computer program, all or part of the steps of the hydropower station flood discharge and power generation combined operation regulation and control method are realized.

The invention also provides a computer readable storage medium, on which a computer program is stored, which computer program, when being executed by a processor, implements all or part of the steps of the hydropower station flood discharge power generation combined operation regulation and control method according to any one of the above.

The invention provides a hydropower station flood discharge and power generation combined operation regulation and control method, a device and electronic equipment, wherein the method can overcome the defects that the existing regulation and control measures are unilateral and the regulation and control errors are large in the prior art, can efficiently and quickly carry out the hydropower station flood discharge and power generation combined operation regulation and control process, and finally ensures that a hydropower station stably and safely operates for a long time.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a flow chart of a method for regulating and controlling the combined operation of flood discharge and power generation of a hydropower station according to the present invention;

FIG. 2 is a second flowchart of the hydropower station flood discharge and power generation combined operation control method provided by the invention;

FIG. 3 is a third flow chart of the hydropower station flood discharge and power generation combined operation regulation method provided by the invention;

FIG. 4 is a fourth flowchart of the hydropower station flood discharge and power generation combined operation regulation method provided by the invention;

FIG. 5 is a schematic structural diagram of a hydropower station flood discharge and power generation combined operation regulation device provided by the invention;

fig. 6 is a schematic structural diagram of an electronic device provided in the present invention.

Reference numerals:

510: a water level prediction module; 520: a comparison module; 530: an execution module; 540: a regulation module;

610: a processor; 620: a communication interface; 630: a memory; 640 a communication bus.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The hydropower station flood discharge and power generation combined operation regulation method, the device and the electronic equipment provided by the invention are described below with reference to the accompanying drawings 1-6.

The embodiment of the invention is explained by taking a step hydropower station in a certain area as an example. Total storage capacity 2084 km of hydropower station³The dead water level is 550.0m to 554.0m which are respectively used as the lower limit value and the upper limit value of the water level height threshold range, the delay time of the water flow of the upstream cascade hydropower station reaching the reservoir area of the hydropower station is about 80min, and the time is used as the preset time period in front of the hydropower station dam. The current situation is as follows: the adjustable storage capacity between the dead water level 550.0m and the normal water storage level 554.0m is only 585 ten thousand m³The adjustable storage capacity of the hydropower station is small, and the water level operation range is small, so that even if the variation range of the storage flow is small (for example, 100-200 m3/s) in a short time, the variation still causes great variation of the water level height of the hydropower station in a short time. When the flow rate of the water discharged from the reservoir is large in the flood season, the downstream water level is greatly increased, and in order to ensure a certain generating water head, the hydropower station needs to maintain a relatively high upstream water level, which further leads to frequent adjustment of the opening of the gate of the hydropower station. This may adversely affect the health of various facilities and equipment of the hydropower station.

In the embodiment of the invention, the hydropower station is taken as an example, and a new hydropower station flood discharge and power generation combined operation regulation and control method is arranged, so that the hydropower station can efficiently and rapidly regulate and control the load, the opening degree of a gate and the like of the hydropower station, and the normal operation of the hydropower station is ensured.

The invention provides a hydropower station flood discharge and power generation combined operation regulation and control method, and fig. 1 is one of flow charts of the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, and as shown in fig. 1, the method comprises the following steps:

100. and determining the initial water level height of the hydropower station dam in a preset time period according to the water level simulation parameter information and a preset water level prediction model.

And inputting the acquired water level simulation parameter information (including the initial gate opening and the initial planned load in the preset time period) into a preset water level prediction model so as to determine the initial water level height in the preset time period before the hydroelectric power station dam through the simulation of the model. The water level prediction model is a water level height estimation model which is trained earlier according to historical water level height change data of the hydropower station, opening data of other related gates, load data of the hydropower station and the like, a deep learning algorithm is applied in the training process of the model, and the specific training process can refer to the method of a water level estimation technology in the prior art, which is not described herein again. The preset time interval refers to the longest length of time that the water level of the hydropower station before the dam can be predicted, and according to relevant data preset in the initial scene of the embodiment of the invention, if T is the preset time interval, T is 80 min. And inputting the acquired water level simulation parameter information into the water level prediction model to predict the water level height of the hydropower station dam within 80min in the future as the initial water level height.

It should be noted that the water level at the beginning of the adjustment and control process is determined by actual measurement of the water level height every time of circulation, that is, the last water level height of the circulation is used as the initial water level height simulated at the next detection time.

200. And comparing the initial water level height with a preset water level height threshold range.

And (3) comparing the initial water level height of the hydropower station dam estimated in the step (100) within 80min in the future with a preset water level height threshold range to see whether the initial water level height exceeds the limit or not. Wherein a dead water level Z is preset_minThe lower limit value of the water level height threshold range, the normal water storage level Z_maxIs the upper limit value of the water level height threshold range, i.e. the water level height threshold range is Z_min～Z_max. And according to the embodiment of the present invention, the related data, Z, is preset at the beginning of the scene_minTaking the value of 550m, while Z_maxTaking the value 554 m. Namely, the initial water level height within 80min before the hydropower station dam estimated in step 100 and Z are calculated_min～Z_max(550 m-554 m) to determine if the water level in the future T period before the dam is over-limit.

It will also be understood that the initial water level height and Z are_min～Z_maxThe comparison of the range of the water level height threshold value (550m to 554m) is divided into three cases in parallel: the initial water level is higher than the water levelUpper limit value Z of degree threshold range_max554m or the initial water level height lies in the water level height threshold range Z_min 550m～Z_max554m or the initial water level height is below the lower limit value Z of the water level height threshold range_max554 m. In each case, a separate control step is carried out in order to determine the respective control instruction.

310. And if the initial water level height is higher than the upper limit value of the water level height threshold range, executing a water level over-upper limit regulation step to determine a regulation instruction.

If the initial water level height is higher than the upper limit value Z of the water level height threshold range_max554m, the step of regulating the water level exceeding the upper limit is executed, which can also be understood as entering the decision logic of the water level exceeding the upper limit to determine the corresponding regulating instruction in this case.

Or 320, if the initial water level height is lower than the lower limit value of the water level height threshold range, executing a water level over-lower limit regulation step to determine a regulation instruction.

If the initial water level height is lower than the lower limit value Z of the water level height threshold range_min550m, the step of controlling the water level exceeding the lower limit is executed, which can also be understood as entering the decision logic of the water level exceeding the lower limit to determine the corresponding control instruction in the present case.

Or, 330, if the initial water level height is within the water level height threshold range, executing a water level non-overrun regulation step to determine a regulation instruction.

If the initial water level height is in the water level height threshold range Z_min 550m～Z_max554m, the step of controlling the water level without exceeding the limit is executed, which can also be understood as entering the decision logic of controlling the water level without exceeding the limit to determine the corresponding control command in this case.

The respective corresponding regulating and controlling instructions determined in the above situations can relate to a load regulating and controlling instruction, a gate opening regulating and controlling instruction and the like according to the actual regulating and controlling conditions of the regulating and controlling instructions.

400. And regulating and controlling the opening degree and the load of the gate according to the regulating and controlling instruction.

The hydropower station regulation and control management system respectively regulates and controls the load and the gate opening according to the specific content of the determined load regulation and control instruction and the determined gate opening instruction, so that the hydropower station can be regulated and controlled efficiently and rapidly to ensure that the hydropower station operates stably and safely for a long time.

The hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention is used for efficiently regulating and controlling the gate opening and the load at the next detection moment of the hydropower station based on the load adjustable allowance of the hydropower station, can give out relevant regulation and control suggestions of personnel of the hydropower station, reduces the load reporting times of the hydropower station every day to a certain extent, more effectively reduces the gate action times and the load adjustment times, improves the long-term safe operation level of the hydropower station, effectively overcomes the defects that the existing regulation and control measures are more flawless and the regulation and control errors are larger in the prior art, and finally ensures that the hydropower station stably and safely operates for a long time.

Specifically, the water level simulation parameter information is used as an input parameter for predicting the dam front water level height in the preset time period T, and specifically includes parameters such as the dam front current actual water level height, the initial gate opening, the warehousing flow in the future preset time period T, and the initial planned load in the future preset time period T. The most important of the parameters are the initial gate opening degree and the initial planned load in the future preset time period T, because the gate opening degree and/or the planned load at the next detection moment can change along with the regulation and control due to the hydropower station regulation and control in the later period. And the planned load at the next test moment is generally related to the initial planned load in the future preset time period T and the load adjustable margin of the current hydropower station.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, fig. 2 is a second flowchart of the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, as shown in fig. 2, on the basis of the method shown in fig. 1, when step 310 is executed, step 310, if the initial water level height is higher than the upper limit value of the water level height threshold range, the water level exceeding upper limit regulation and control step is executed to determine a regulation and control instruction, and further comprising:

311. determining an updated planned load at the next detection time, wherein the updated planned load at the next detection time is the initial planned load plus a load adjustable margin; and the next detection time and the current detection time are separated by a fixed time.

Determining the updated planned load at the next detection moment, namely modifying the planned load at the next detection moment into the upper limit F of the load adjustable to the hydropower station load at the next moment_max. The adjustable upper limit of the hydropower station load refers to the maximum output of a hydropower station unit under the current hydropower station at the current water level height, and the specific calculation is as follows: hydropower station load adjustable load upper limit F_maxInitial planned load + load tunable margin. Thus, the updated planned load at the next detection time is determined as the hydropower station load adjustable upper load limit F_maxInitial planned load + load tunable margin. The next detection time is considered to be a next detection time separated from the current detection time (the current detection time when the preset time period of 80min is applied) by a fixed time, for example, the next detection time after the separation of 5 min.

After the load is adjusted, the water flow output of the hydropower station is increased, more water can flow out quickly, and the water level height is reduced.

312. And updating the water level simulation parameter information according to the updated planned load at the next detection moment, and re-determining the current water level height of the hydropower station dam in the preset time period according to the updated water level simulation parameter information and the water level prediction model.

And updating the water level simulation parameter information according to the updated planned load at the next detection time determined in the step 311, namely replacing the initial planned load in the original water level simulation parameter information with the updated planned load at the next detection time, and inputting the updated water level simulation information into the water level prediction model again to simulate the current water level height of the hydroelectric dam within the future preset time period T.

313. And judging whether the current water level height is still higher than the upper limit value of the water level height threshold range.

Continuously judging whether the redetermined current water level height is still higher than the upper limit value Z of the water level height threshold range_max554m。

314. If the current time is still higher than the upper limit value, detecting whether the updated planned load of each next detection time after the current time is not adjustable any more: if the current water level is still adjustable, continuously determining the planned load after the next detection moment is updated so as to re-determine the current water level height, and re-judging whether the current water level height is higher than the upper limit value; if the water level is not adjustable, the opening degree of the gate is increased until the water level in the future preset time period does not exceed the upper limit value.

If the redetermined current water level height is still higher than the upper limit value Z of the water level height threshold range_max554m, further judging whether the updated planned load at each next detection time after the current time is not adjustable, if so, continuously adjusting the upper limit of the load of the planned load at the future time until the planned loads at all the future times are adjusted to the adjustable upper limit of the load; if the water level is not adjustable, the opening degree of the gate is adjusted instead, and the opening degree of the gate is gradually increased until the water level in the future T period no longer exceeds the upper limit value Z_max554m。

315. And if the load is not higher than the upper limit value, generating a corresponding load regulation instruction and a corresponding gate opening regulation instruction.

When it is determined in step 313 that the redetermined current water level is no longer higher than the upper limit value Z of the water level height threshold range_max554m, or, although higher than Z_maxHowever, after the adjustment and control in step 314, the re-determined current water level is no longer higher than the upper limit value Z of the water level threshold range_max554m, correspondingly generating corresponding load regulation and control instructions and gate opening regulation and control instructions according to the above-mentioned regulation and control steps, so as to make hydropower station regulation and control management system implement regulation and control according to the above-mentioned specific contents of load regulation and control instructions and gate opening instructionsAnd the load and the gate opening are respectively regulated and controlled, so that the long-term stable and safe operation of the hydropower station is ensured.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, fig. 3 is a third flow chart of the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, as shown in fig. 3, on the basis of the method shown in fig. 1, when step 320 is executed, step 320, if the initial water level height is lower than the lower limit value of the water level height threshold range, the water level over-lower limit regulation and control step is executed to determine a regulation and control instruction, and the method comprises the following steps:

321. and detecting the current opening degree of the gate and judging whether the gate is completely closed.

The current gate opening is detected and it is determined whether the gate is partially or fully closed (in this case, the gate opening is one gate opening, not the number of gates is changed).

322. If the gate is not completely closed, after the gate opening is adjusted downwards to re-determine the current water level height in a preset time period before the hydroelectric power station dam, judging whether the current water level height is still lower than the lower limit value of the water level height threshold range; if the current opening degree of the gate is still lower than the lower limit value, the current opening degree of the gate is detected again, and whether the gate is completely closed is judged.

If the gate is not completely closed, the opening degree of the gate is adjusted downwards once, and after the opening degree of the gate is adjusted downwards to re-determine the current water level height of the hydropower station dam in the preset time period T, whether the current water level height is still lower than the lower limit value Z of the water level height threshold range is re-judged_min 550m；

If the new current water level height is still lower than the lower limit value Z of the water level height threshold range_min550m, detecting the current gate opening again, judging whether the gate is fully closed, and continuously reducing the gate opening when the gate is not fully closed until the gate is fully closed.

323. If the gate is completely closed, after the planned load after the update of the next detection moment is determined and the current water level height of the hydropower station dam in the preset time period is re-determined according to the planned load, judging whether the current water level height is still lower than the lower limit value of the water level height threshold range; and if the water level is still lower than the lower limit value, continuously adjusting the load until the water level height in a future preset time period is not lower than the lower limit value.

If the gate is completely closed, determining the planned load after updating at the next detection moment according to the initial planned load and the load adjustable margin, and after determining the planned load after updating at the next detection moment and re-determining the current water level height of the hydropower station dam in a preset time period according to the planned load after updating at the next detection moment, re-judging whether the current water level height is still lower than the lower limit value Z of the water level height threshold range or not_min 550m；

If the redetermined current water level height is still lower than the lower limit value Z_min550m, continuing to adjust the updated planned load at the next detection moment until the water level height in the future preset time period is no longer lower than the lower limit value.

324. And if the current water level is not lower than the lower limit value, generating a corresponding load regulation instruction and a corresponding gate opening regulation instruction.

When step 322, it is directly determined that the new current water level is no longer lower than the lower limit value Z of the water level threshold range_min550m, or the current water level is not lower than the lower limit value Z after being regulated and controlled by the step 323_minAnd 550m, correspondingly generating a corresponding load regulation instruction and a corresponding gate opening regulation instruction according to the above regulation steps, so that the hydropower station regulation and control management system respectively regulates and controls the load and the gate opening according to the specific contents of the determined load regulation instruction and gate opening instruction, and further ensures that the hydropower station stably and safely operates for a long time.

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, in step 322 shown in fig. 3, if the gate is not completely closed, after the gate opening is adjusted downwards to re-determine the current water level height in a preset time period before the hydroelectric power station dam, whether the current water level height is still lower than the lower limit value is judged, and if the current water level height is still lower than the lower limit value, the current gate opening is re-detected and whether the gate is completely closed is judged, further comprising the following steps:

3221. and if the gate is not completely closed, adjusting the gate opening degree downwards once, and determining the updated gate opening degree, wherein the updated gate opening degree is the gate opening degree after being adjusted downwards once.

And if the gate is not completely closed, adjusting the gate opening degree downwards once, and determining the updated gate opening degree, wherein the updated gate opening degree is equal to the gate opening degree after being adjusted downwards once.

3222. And updating the water level simulation parameter information according to the updated gate opening, and re-determining the current water level height of the hydropower station dam in a preset time period according to the updated water level simulation parameter information and the water level prediction model.

And after the opening degree of the gate is adjusted downwards, updating the water level simulation parameter information according to the updated opening degree of the gate, namely replacing the initial opening degree of the gate in the initial water level simulation parameter information by the updated opening degree of the gate to obtain new water level simulation information, and inputting the new water level simulation information into the water level prediction model again to estimate the current water level height of the hydropower station dam in the preset time period T again.

3223. And judging whether the current water level height is still lower than the lower limit value.

It is again determined whether the current water level height redetermined in step 3222 is still lower than the lower limit value Z of the water level height threshold range_min 550m。

3224. If the current opening degree of the gate is still lower than the lower limit value, the current opening degree of the gate is detected again, and whether the gate is completely closed is judged.

According to step 323 shown in fig. 3, if the gate is completely closed, after determining the planned load after update at the next detection time and re-determining the current water level height in the preset time period before the hydroelectric dam according to the planned load, determining whether the current water level height is still lower than the lower limit value of the water level height threshold range, and if the current water level height is still lower than the lower limit value, continuing to adjust the load until the water level height in the preset time period in the future is not lower than the lower limit value, further comprising:

3231. if the gate is completely closed, determining the updated planned load at the next detection time, wherein the updated planned load at the next detection time is the initial planned load-load adjustable margin; and the next detection time and the current detection time are separated by a fixed time.

And if the gate is completely closed, determining the updated planned load at the next detection time according to the initial planned load and the load adjustable allowance, wherein the updated planned load at the next detection time is the initial planned load-load adjustable allowance. Wherein, the next detection time is separated from the current detection time by a fixed time, for example, by 5 min.

3232. And updating the water level simulation parameter information according to the updated planned load at the next detection moment, and re-determining the current water level height of the hydropower station dam in the preset time period according to the updated water level simulation parameter information and the water level prediction model.

And updating the water level simulation parameter information according to the determined updated planned load at the next detection moment, namely replacing the initial planned load in the initial water level simulation parameter information by the updated planned load at the next detection moment to obtain the updated water level simulation parameter information, and inputting the updated water level simulation information into the water level prediction model to re-determine the current water level height of the hydropower station dam in the preset time period.

3233. And judging whether the current water level height is still lower than the lower limit value of the water level height threshold range.

Judging whether the redetermined current water level height is still lower than the lower limit value Z of the water level height threshold range_min 550m。

3234. And if the water level height is still lower than the lower limit value, setting the updated planned load at the next detection time to be half of the updated planned load at the next detection time until the water level height in a future preset time period is not lower than the lower limit value.

If the redetermined current water level height is still lower than the lower limit value Z_min550m, then continueAdjusting the updated planned load at the next detection moment: and setting the updated planned load of the next detection time to be half of the updated planned load of the next detection time which is adjusted last time. Or the load is continuously adjusted until the current water level height in the future preset time period T is no longer lower than the lower limit value Z_min 550m。

According to the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, the first reference value and the second reference value of the water level height are preferably set, and the lower limit value of the water level height threshold range is less than the first reference value and less than the second reference value and less than the upper limit value of the water level height threshold range, specifically, the first reference value is recorded as Z₁And the value is set as Z₁Taking 551m, the second reference value is recorded as Z₂And the value is set as Z₂Take 553.5 m. And satisfy Z_min 550m＜Z₁ 551m＜Z₂ 553.5m＜Z_max 554m。

Wherein Z is_minA lower limit value of a water level height threshold range for hydropower station operation, such as a dead water level; z_maxAn upper limit value of a water level height threshold range for the operation of the power station, such as a normal water storage level; the two water level limits are hard control water levels in the operation of the hydropower station, and when the actual water level may exceed the limits of the two water levels, all possible measures should be taken to control the water level not to exceed the limits. The added Z1 is a running low water level reference value, namely when the actual water level is lower than the water level, the running water level of the hydropower station is considered to be lower at the moment, and appropriate measures can be taken to raise the water level; the added Z2 is an operation high water level reference value, namely when the actual water level is higher than the water level, the operation water level of the hydropower station is considered to be higher at the moment, and appropriate measures can be taken to raise and lower the water level; the two water levels are reference water level values in the operation of the hydropower station and belong to unnecessary control water levels. The two reference water level values are water level control operations executed in a standard mode, the advanced control based on the potential water level out-of-limit risk is achieved, corresponding regulation and control can be conducted before the out-of-limit risk occurs, and the safety and the stability of hydropower station operation can be guaranteed better.

And at a set first reference value Z₁551m and a second reference value Z₂553.5m, fig. 4 is a fourth flowchart of the hydropower station flood discharge and power generation combined operation regulation and control method provided by the invention, as shown in fig. 4, on the basis of the method shown in fig. 1, in step 330, if the initial water level height is within the water level height threshold range, the water level non-overrun regulation and control step is executed to determine a regulation and control instruction, further comprising:

331. comparing the initial water level height with the first reference value and the second reference value, respectively.

Respectively comparing the initial water level height in the future preset time period T with the first reference value Z₁551m and a second reference value Z₂553.5m for comparison.

The comparison result is divided into three parallel conditions, and each condition respectively executes the corresponding regulating and controlling step.

3321. When the initial water level height is lower than the first reference value, detecting the opening degree of the current gate and judging whether the gate is completely closed; if the gate is not completely closed, the opening degree of the gate is adjusted downwards to re-determine the current water level height of the hydropower station dam in a preset time period until the current water level height is not lower than the first reference value; if the gate is completely closed, determining the planned load after updating at the next detection moment, and re-determining the current water level height of the hydropower station dam in a preset time period according to the planned load until the current water level height is not lower than the first reference value; wherein the updated planned load at the next detection time is the initial planned load-load adjustable margin; and the next detection time and the current detection time are separated by a fixed time.

If step 331 determines that the initial water level is lower than the first reference value Z₁551m, detecting the current gate opening and judging whether the gate is completely closed. If the gate is not completely closed, the opening degree of the gate is reduced downwards to redetermine the current water level height of the hydropower station dam in a preset time period until the current water level height is not lower than the first reference value Z₁551m, namely, the opening degree of the gate is reduced until the current water level is higher than the current water levelFirst reference value Z₁551 m. If the gate is completely closed, determining the planned load after updating at the next detection moment, and re-determining the current water level height of the hydropower station dam in the preset time period according to the planned load until the current water level height is not lower than the first reference value Z₁551 m; the updated planned load at the next detection moment is equal to the initial planned load-load adjustable margin; wherein, the next detection time is separated from the current detection time by a fixed time, for example, by 5 min.

Or 3322, when the initial water level is greater than the second reference value, determining the planned load after updating at the next detection time, and accordingly re-determining the current water level in a preset time period before the hydroelectric power station dam until the current water level is not greater than the second reference value; wherein the updated planned load at the next detection time is equal to the initial planned load plus the load adjustable margin; and the next detection time and the current detection time are separated by a fixed time.

Or, if the step 331 determines that the initial water level is higher than the second reference value Z₂553.5m, determining the planned load after update at the next detection moment, and re-determining the current water level height of the hydropower station dam in the preset time period according to the planned load, wherein the specific operation steps refer to the load regulation and control step in the previous embodiment until the current water level height is not higher than the second reference value Z₂553.5 m. Wherein the updated planned load at the next detection time is equal to the initial planned load plus the load adjustable margin; wherein, the next detection time is separated from the current detection time by a fixed time, for example, by 5 min.

Or 3323, when the first reference value is less than the initial water level height and less than the second reference value, determining whether the load at the last detection time is the load adjusted on the basis of the initial planned load; if the current detection time is not adjusted or is adjusted and the actual adjustment time exceeds the preset adjustment time, the load regulation and control are not carried out at the current detection time; and if the adjustment is carried out and the actual adjustment time does not exceed the preset adjustment time, carrying out load regulation and control at the current moment according to the load adjustment condition at the last detection moment.

Or, if it is determined in step 331 that the initial water level is not higher than the second reference value Z₂553.5m, and not lower than the first reference value Z₁551m, i.e. at the first reference value Z_{1 and}second reference value Z₂And when the first reference value is less than the initial water level height and less than the second reference value, further judging whether the load at the last detection moment is the load adjusted on the basis of the initial planned load.

If the water level is not adjusted, the current water level height is proved to be appropriate, and no load regulation is performed at this time if the water level is not adjusted. Or, if the adjusted actual adjustment time exceeds the preset adjustment time, for example, exceeds the preset adjustment time for 30min, it is proved that the current water level is adjusted properly, and the load regulation is not performed at this time.

If the adjustment has been completed and the actual adjustment time does not exceed the preset adjustment time, for example, the actual adjustment time is 20min and the preset adjustment time is not 30min, it is determined that the previous adjustment has not been completed so that the current water level height is not adjusted to a suitable height, and then the current load adjustment and control is performed according to the plan of the load adjustment at the previous detection time, so that the final adjustment and control result is suitable.

333. And generating a corresponding load regulation instruction and a corresponding gate opening regulation instruction.

And (3) respectively generating corresponding load regulation and control instructions and gate opening regulation and control instructions aiming at the regulation and control steps of the

steps

3321, 3322 and 3323, so that the hydropower station regulation and control management system respectively regulates and controls the load and the gate opening according to the specific contents of the determined load regulation and control instructions and gate opening instructions, and further ensures that the hydropower station stably and safely operates for a long time.

Preferably, the mode for determining the optimal load adjustable margin of the hydropower station is determined comprehensively by combining the input initial water level height of the current hydropower station and other related parameters according to the load adjustable margin calculation model and analyzing the operation times of the gate and the marginal benefit of the load adjustable margin.

The load-adjustable allowance calculation model is trained in advance by combining a deep learning algorithm based on gate opening data, gate action times, average water head data, generated water quantity data, flood discharge water quantity data and average power generation efficiency data in the current hydropower station historical time period. For example, various measured data of a hydropower station in a certain four-month flood season are used as input data, a real-time regulation strategy is utilized, rolling decisions are made on gate opening and hydropower station unit output in the whole time period, for example, decisions are made once every five minutes, and hydropower station unit output and gate opening at the next moment are determined in each decision.

As shown in table 1 below, the calculation results of the real-time control decision under different load adjustable margin conditions are shown in table 1. According to the record analysis of the gate action times and the load adjustable margin marginal benefit of the calculation result shown in the table 1, the gate action times are gradually reduced along with the increase of the load adjustable margin; in the embodiment, when the load adjustable margin is 110-120 MW, the marginal benefit of the load adjustable margin is close to the maximum. And then, according to the calculation results shown in table 1, the average water head and the average power generation efficiency are recorded and analyzed, and the flood discharge water amount and the generated water amount are recorded and analyzed, so that the average power generation efficiency of the hydropower station unit is reduced along with the increase of the load adjustable margin, but the generated water amount is improved. Although a certain generating head and unit efficiency are lost in the process, the long-term safe operation level of the power station is greatly improved. And finally determining the optimal load adjustable allowance suitable for the current hydropower station by the load adjustable allowance calculation model by combining the calculation results of the table 1 and the record analysis of the related data. In this embodiment, the load adjustable margin of 120MW is selected as the theoretically optimal load adjustable margin of the current hydropower station.

And then, the optimal load adjustable margin selected and determined according to the current hydropower station is timely applied to the method for regulating and controlling the combined operation of flood discharge and power generation of the hydropower station. Furthermore, the hydropower station has a certain load adjustable margin which can be determined autonomously on the basis of the power grid load instruction, so that the load adjustable margin with optimal pertinence can be selected to be applied to the regulation and control process, the self regulation capability of the hydropower station can be greatly enhanced, and the long-term safe operation level is improved.

TABLE 1

The invention provides a hydropower station flood discharge and power generation combined operation regulation and control device. The hydropower station flood discharge and power generation combined operation regulation and control device and the hydropower station flood discharge and power generation combined operation regulation and control method correspond to each other, the principles can be referred to each other, and details are not repeated here.

Fig. 5 is a schematic structural diagram of the hydropower station flood discharge and power generation combined operation regulation and control device provided by the present invention, and as shown in fig. 5, the device includes a water level prediction module 510, a comparison module 520, an execution module 530, and a regulation and control module 540, which are connected in sequence, wherein:

the water level prediction module 510 is configured to determine an initial water level height of a pre-set time period before a hydroelectric power station dam according to the water level simulation parameter information and a pre-set water level prediction model;

a comparing module 520, configured to compare the initial water level height with a preset water level height threshold range;

an executing module 530, configured to, if the initial water level is higher than the upper limit of the water level threshold range, execute a water level exceeding upper limit regulation step to determine a regulation instruction; or, if the initial water level height is lower than the lower limit value of the water level height threshold range, executing a water level over-lower limit regulation step to determine a regulation instruction; or, if the initial water level height is within the water level height threshold range, executing a water level non-overrun regulation step to determine a regulation instruction;

and the regulating module 540 is used for regulating and controlling the opening degree and the load of the gate according to the regulating and controlling instruction.

The hydropower station flood discharge and power generation combined operation regulation and control device comprises a water level prediction module 510, a comparison module 520, an execution module 530 and a regulation and control module 540 which are sequentially connected, wherein the modules are mutually matched, so that the device can efficiently regulate and control the opening degree and the load of a gate at the next detection moment of the hydropower station based on the load adjustable margin of the hydropower station, can give out relevant regulation and control suggestions of personnel in the hydropower station, reduces the load reporting times of the hydropower station every day to a certain extent, more effectively reduces the gate action times and the load adjustment times, improves the long-term safe operation level of the hydropower station, effectively overcomes the defects that the existing regulation and control measures are more comprehensive and the regulation and control errors are larger in the prior art, and finally ensures that the hydropower station stably and safely operates for a long time.

Fig. 6 is a schematic structural diagram of the electronic device provided in the present invention, and as shown in fig. 6, the electronic device may include: a processor (processor)610, a communication Interface (Communications Interface)620, a memory (memory)630 and a communication bus 640, wherein the processor 610, the communication Interface 620 and the memory 630 communicate with each other via the communication bus 640. The processor 610 may invoke logic instructions in the memory 630 to perform all or a portion of the steps of the method for regulating the operation of the hydropower station combined flood discharge and power generation, the method comprising:

In addition, the logic instructions in the memory 630 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the hydropower station flood discharge and power generation combined operation regulation and control method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

In another aspect, the present invention further provides a computer program product, which includes a computer program stored on a non-transitory computer readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer being capable of executing all or part of the steps of the hydropower station flood discharge and power generation combined operation regulation and control method provided in the above embodiments, the method including:

In yet another aspect, the present invention further provides a non-transitory computer readable storage medium, having a computer program stored thereon, where the computer program is executed by a processor to implement all or part of the steps of the method for regulating and controlling the operation of the hydropower station for flood discharging and power generation in combination according to the above embodiments, and the method includes:

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention. One of ordinary skill in the art can understand and implement it without inventive effort.

Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on such understanding, the above technical solutions may be essentially or partially implemented in the form of software products, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and include instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the index monitoring method according to the embodiments or some parts of the embodiments.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A hydropower station flood discharge and power generation combined operation regulation method is characterized by comprising the following steps:

2. The hydropower station flood discharge and power generation combined operation control method according to claim 1, wherein the water level simulation parameter information comprises an initial gate opening and an initial planned load in a preset time period.

3. The hydropower station flood discharge and power generation combined operation regulation and control method according to claim 2, wherein if the initial water level height is higher than the upper limit value of the water level height threshold range, the step of performing water level over-upper limit regulation and control to determine a regulation and control instruction comprises:

4. The hydropower station flood discharge and power generation combined operation regulation and control method according to claim 2, wherein if the initial water level height is lower than the lower limit value of the water level height threshold range, the step of performing water level over-lower limit regulation and control to determine a regulation and control instruction comprises:

5. The hydropower station flood discharge and power generation combined operation regulation and control method according to claim 4, wherein if the gate is not completely closed, after the gate opening is adjusted downwards to re-determine the current water level height of the hydropower station dam in a preset time period, judging whether the current water level height is still lower than the lower limit value, and if the current water level height is still lower than the lower limit value, re-detecting the current gate opening and judging whether the gate is completely closed comprises the following steps:

6. The hydropower station flood discharge and power generation combined operation regulation and control method according to claim 4, wherein if the gate is completely closed, after determining the planned load after update at the next detection time and accordingly re-determining the current water level height in the preset time period before the hydroelectric dam, judging whether the current water level height is still lower than the lower limit value of the water level height threshold range, and if the current water level height is still lower than the lower limit value, continuing to adjust the load until the water level height in the preset time period in the future is not lower than the lower limit value, comprising the following steps:

7. The hydropower station flood discharge and power generation combined operation regulation method according to claim 2, wherein a first reference value and a second reference value of a water level height are set, and a lower limit value of the water level height threshold range < the first reference value < the second reference value < an upper limit value of the water level height threshold range is satisfied, and if the initial water level height is within the water level height threshold range, a water level non-overrun regulation step is performed to determine a regulation command, comprising:

8. The hydropower station flood discharge and power generation combined operation regulation and control method according to claim 3, 6 or 7, wherein the load adjustable margin is an optimal load adjustable margin value of the current hydropower station determined according to an initial water level height of the current hydropower station and a load adjustable margin calculation model; the load-adjustable allowance calculation model is pre-trained based on gate opening data, gate action times, average water head data, generated water quantity data, flood discharge water quantity data and average power generation efficiency data in the current hydropower station historical time period and combined with a deep learning algorithm.

9. The utility model provides a power station flood discharge electricity generation combined operation regulation and control device which characterized in that includes:

10. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements all or part of the steps of the hydropower station flood discharge and power generation combined operation regulation method according to any one of claims 1-8.