CN115269655A

CN115269655A - Early warning method and device for bearing oil tank oil level of hydroelectric generating set and computer equipment

Info

Publication number: CN115269655A
Application number: CN202210937028.2A
Authority: CN
Inventors: 王卫玉; 赵训新; 何葵东; 罗立军; 魏加达; 王思嘉; 张培; 李崇仕; 刘禹; 胡蝶; 莫凡; 金艳; 阳瑞霖; 肖志怀; 康志远; 马腾飞
Original assignee: Hunan Wuling Power Technology Co Ltd; Wuling Power Corp Ltd
Current assignee: Hunan Wuling Power Technology Co Ltd; Wuling Power Corp Ltd
Priority date: 2022-08-05
Filing date: 2022-08-05
Publication date: 2022-11-01

Abstract

The disclosure provides an early warning method and device for the oil level of a bearing oil tank of a hydroelectric generating set and computer equipment, and relates to the technical field of hydroelectric generating sets. The method comprises the following steps: acquiring current equipment parameters of a hydroelectric generating set to be monitored and a first oil level value of a bearing oil tank; determining the state of the hydroelectric generating set based on the equipment parameters; determining upper and lower limits of a target oil level based on the state of the hydroelectric generating set; determining whether the oil level of a bearing oil tank of the hydroelectric generating set is abnormal or not according to the first oil level value and the upper and lower limits of the target oil level; and carrying out abnormity early warning under the condition that the oil level of a bearing oil tank of the hydroelectric generating set is abnormal. Therefore, the upper limit and the lower limit of the target oil level can be determined based on the state of the hydroelectric generating set, and then whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal or not is determined based on the relation between the current first oil level value of the hydroelectric generating set and the upper limit and the lower limit of the target oil level, and abnormity early warning is carried out, so that the accuracy and the reliability of monitoring the oil level of the bearing oil tank of the hydroelectric generating set are improved, and conditions are provided for guaranteeing the stable operation of the hydroelectric generating set.

Description

Early warning method and device for bearing oil tank oil level of hydroelectric generating set and computer equipment

Technical Field

The disclosure relates to the technical field of hydroelectric generating sets, in particular to a method and a device for early warning of the oil level of a bearing oil tank of a hydroelectric generating set and computer equipment.

Background

The hydroelectric generating set is used as core equipment for energy conversion of the hydropower station, and the components of the hydroelectric generating set are mutually coupled, so that the development trend of complexity and high integration is presented. Meanwhile, the running environment of the hydroelectric generating set is severe and is influenced by coupling factors such as hydraulic force, machinery and electromagnetism, so that safety risks such as abnormal vibration, coupling faults, fatigue deterioration and even structural damage of equipment can be caused, and the safety risks are increasingly prominent.

In the running process of the hydroelectric generating set, turbine oil in the bearing is of great importance to bearing lubrication and heat dissipation, and in order to prevent oil leakage of the system and other faults of the oil groove, the oil level in the oil tank cannot be too high or too low. Therefore, how to monitor the oil level of the bearing oil tank of the hydroelectric generating set is very important.

Disclosure of Invention

The present disclosure is directed to solving, at least to some extent, one of the technical problems in the related art.

The embodiment of the first aspect of the disclosure provides an early warning method for the oil level of a bearing oil tank of a hydroelectric generating set, which includes:

acquiring current equipment parameters of a hydroelectric generating set to be monitored and a first oil level value of a bearing oil tank;

determining a state of the hydroelectric generating set based on the equipment parameter;

determining upper and lower limits of a target oil level based on the state of the hydroelectric generating set;

determining whether the oil level of a bearing oil tank of the hydroelectric generating set is abnormal or not according to the first oil level value and the upper and lower limits of the target oil level;

and under the condition that the oil level of the bearing oil tank of the hydroelectric generating set is abnormal, performing abnormity early warning.

Optionally, determining the upper and lower limits of the target oil level based on the state of the hydroelectric generating set includes:

and determining upper and lower limits of a target oil level from a preset oil level data base based on the state of the hydroelectric generating set and the type of the bearing oil tank.

Optionally, before determining the upper and lower limits of the target oil level from the preset oil level database, the method further includes:

acquiring the historical oil level value of each bearing oil tank of the hydroelectric generating set in different states within a first time period;

arranging the historical oil level values in a descending order to obtain at least one oil level value set corresponding to the state of the hydroelectric generating set and the type of the bearing oil tank;

and determining an oil level health value interval corresponding to the state of the hydroelectric generating set and the type of the bearing oil tank based on the preset confidence coefficient and the number of historical oil level values contained in the oil level value set, wherein the oil level health value interval comprises an upper limit oil level value and a lower limit oil level value.

Optionally, the determining, based on the preset confidence and the number of historical oil level values included in the oil level value set, an oil level health value interval corresponding to the state of the hydroelectric generating set and the type of the bearing oil tank includes:

determining a third oil level value and a fourth oil level value of a specific position in the oil level value set based on a preset confidence coefficient and the number of historical oil level values contained in the oil level value set;

and rounding the third oil level value and the fourth oil level value to determine a corresponding oil level health value interval, wherein the oil level health value interval comprises an upper limit oil level value and a lower limit oil level value.

Optionally, the determining, based on the preset confidence and the number of the historical oil level values included in the oil level value set, an oil level health value interval corresponding to the state of the hydroelectric generating set and the type of the bearing oil tank includes:

determining an upper limit margin and a lower limit margin based on the number of historical oil level values contained in the oil level value set and/or the type of the bearing oil tank;

and updating the upper limit oil level value by using the upper limit margin and updating the lower limit oil level value by using the lower limit margin so as to determine an oil level health value interval.

Optionally, after the oil level health value interval corresponding to the state of the hydroelectric generating set and the type of the bearing oil tank is determined, the method further includes:

updating the oil level health value interval according to a preset period;

and storing the updated oil level health value into an oil level data base.

Optionally, the obtaining of the historical oil level value of each bearing oil tank of the hydroelectric generating set in different states within the first duration includes:

acquiring equipment parameters of the hydroelectric generating set within a first duration;

determining the starting time and the stopping time of the hydroelectric generating set according to the equipment parameters;

determining a first delay time corresponding to a starting-up state and a second delay time corresponding to a shutdown state based on the type of the hydroelectric generating set;

and acquiring the oil level value of the power-on time after a first delay time and acquiring the historical oil level value of the power-off time after a second delay time.

Optionally, determining whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal according to the first oil level value and the upper and lower limits of the target oil level includes:

determining to perform primary upper limit early warning in the starting state under the condition that the hydroelectric generating set is in the starting state and the first oil level value is greater than the first oil level value upper limit;

when the hydroelectric generating set is in a starting state, and the first oil level value is smaller than the upper limit of the first oil level value and larger than the upper limit of the second oil level value, determining to perform secondary upper limit early warning in the starting state;

determining to perform primary lower limit early warning in the starting state under the condition that the hydroelectric generating set is in the starting state and the first oil level value is smaller than the lower limit of the first oil level value;

determining to perform secondary early warning in the starting state under the conditions that the hydroelectric generating set is in the starting state, and the first oil level value is smaller than the lower limit of the second oil level value and larger than the lower limit of the first oil level value;

determining to perform primary upper limit early warning in the shutdown state under the condition that the hydroelectric generating set is in the shutdown state and the first oil level value is greater than the upper limit of the third oil level value;

when the hydroelectric generating set is in a shutdown state, and the first oil level value is smaller than the upper limit of the third oil level value and larger than the upper limit of the fourth oil level value, determining to perform two-stage upper limit early warning in the shutdown state; determining to perform primary lower limit early warning in a shutdown state under the condition that the hydroelectric generating set is in the shutdown state and the first oil level value is smaller than the lower limit of the third oil level value;

and under the condition that the hydroelectric generating set is in a shutdown state, and the first oil level value is smaller than the lower limit of the fourth oil level value and larger than the lower limit of the third oil level value, determining to perform secondary lower limit early warning in the shutdown state.

The embodiment of the second aspect of the disclosure provides a early warning device of hydro-power generating units bearing oil tank oil level, includes:

the first acquisition module is used for acquiring current equipment parameters of the hydroelectric generating set to be monitored and a first oil level value of a bearing oil tank;

the first determination module is used for determining the state of the hydroelectric generating set based on the equipment parameters;

the second determination module is used for determining upper and lower limits of a target oil level based on the state of the hydroelectric generating set;

the third determining module is used for determining whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal or not according to the first oil level value and the upper limit and the lower limit of the target oil level;

and the early warning module is used for carrying out abnormal early warning under the condition that the oil level of the bearing oil tank of the hydroelectric generating set is abnormal.

Optionally, the second determining module is specifically configured to:

Optionally, the method further includes:

the second acquisition module is used for acquiring the historical oil level value of each bearing oil tank of the hydroelectric generating set in different states within a first time period;

the fourth determining module is used for arranging the historical oil level values from large to small according to the state of the hydroelectric generating set and the type of the bearing oil tank so as to determine a corresponding oil level value set;

and the fifth determining module is used for determining an oil level health value interval corresponding to the state of the hydroelectric generating set and the type of the bearing oil tank based on a preset confidence coefficient and the number of historical oil level values contained in the oil level value set, wherein the oil level health value interval comprises an upper limit oil level value and a lower limit oil level value.

Optionally, the fifth determining module is specifically configured to:

and rounding the third oil level value and the fourth oil level value to determine corresponding oil level health value intervals, wherein the oil level health value intervals comprise an upper limit oil level value and a lower limit oil level value.

Optionally, the fifth determining module is specifically configured to:

and updating the upper limit oil level value by using the upper limit margin, and updating the lower limit oil level value by using the lower limit margin to determine an oil level health value interval.

Optionally, the fifth determining module is further configured to:

updating the oil level health value interval according to a preset period;

and storing the updated oil level health value into an oil level data base.

Optionally, the second obtaining module is specifically configured to:

determining a first delay time corresponding to a startup state and a second delay time corresponding to a shutdown state based on the type of the hydroelectric generating set;

and acquiring an oil level value of the power-on time after a first delay time and acquiring a historical oil level value of the power-off time after a second delay time.

Optionally, the third determining module is specifically configured to:

determining to perform secondary upper limit early warning in the starting state under the conditions that the hydroelectric generating set is in the starting state, and the first oil level value is smaller than a first oil level value upper limit and larger than a second oil level value upper limit;

when the hydroelectric generating set is in a shutdown state, and the first oil level value is smaller than the upper limit of the third oil level value and larger than the upper limit of the fourth oil level value, determining to perform two-stage upper limit early warning in the shutdown state; determining to perform primary lower limit early warning in the shutdown state under the condition that the hydroelectric generating set is in the shutdown state and the first oil level value is smaller than the lower limit of the third oil level value;

An embodiment of a third aspect of the present disclosure provides a computer device, including: the early warning method for the oil level of the bearing oil tank of the hydroelectric generating set comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein when the processor executes the program, the early warning method for the oil level of the bearing oil tank of the hydroelectric generating set is realized.

In an embodiment of a fourth aspect of the present disclosure, a non-transitory computer-readable storage medium is provided, where a computer program is stored, and the computer program, when executed by a processor, implements the method for early warning of the oil level of the bearing oil tank of the hydroelectric generating set according to the embodiment of the first aspect of the present disclosure.

In an embodiment of a fifth aspect of the present disclosure, a computer program product is provided, where when being executed by an instruction processor in the computer program product, the method for early warning of the oil level of the bearing oil tank of the hydroelectric generating set according to the embodiment of the first aspect of the present disclosure is performed.

According to the early warning method and device for the bearing oil tank oil level of the hydroelectric generating set, the current equipment parameters of the hydroelectric generating set to be monitored and the first oil level value of the bearing oil tank can be obtained firstly, then the state of the hydroelectric generating set can be determined based on the equipment parameters, then the upper limit and the lower limit of the target oil level are determined based on the state of the hydroelectric generating set, then whether the bearing oil tank oil level of the hydroelectric generating set is abnormal or not can be determined according to the first oil level value and the upper limit and the lower limit of the oil level, and under the condition that the oil level is abnormal, abnormal early warning is carried out. Therefore, the upper limit and the lower limit of the target oil level can be determined based on the state of the hydroelectric generating set, then whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal at the current moment is determined based on the relation between the current first oil level value of the hydroelectric generating set and the upper limit and the lower limit of the target oil level, and abnormity early warning is carried out, so that the accuracy and the reliability of oil level monitoring of the bearing oil tank of the hydroelectric generating set are improved, the situations of running faults and the like of the hydroelectric generating set caused by the fact that the oil level of the oil tank is abnormal and not known in time are avoided, and conditions are provided for guaranteeing the stable running of the hydroelectric generating set.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic flow chart of an early warning method for an oil level of a bearing oil tank of a hydroelectric generating set according to an embodiment of the present disclosure;

fig. 1A is a schematic view of an oil level of an upper guide bearing oil tank in a start-up state of a hydroelectric generating set according to an embodiment of the present disclosure;

fig. 2 is a schematic flow chart of a method for early warning of an oil level of a bearing oil tank of a hydroelectric generating set according to another embodiment of the present disclosure;

fig. 3 is a schematic structural view of an oil level early warning device for a bearing oil tank of a hydroelectric generating set according to an embodiment of the disclosure;

FIG. 4 illustrates a block diagram of an exemplary computer device suitable for use to implement embodiments of the present disclosure.

Detailed Description

Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure.

The method, the device, the computer equipment and the storage medium for early warning of the oil level of the bearing oil tank of the hydroelectric generating set according to the embodiments of the present disclosure are described below with reference to the accompanying drawings.

The embodiment of the present disclosure is exemplified by the early warning method for the oil level of the bearing oil tank of the hydroelectric generating set being configured in an early warning device for the oil level of the bearing oil tank of the hydroelectric generating set, and the early warning device for the oil level of the bearing oil tank of the hydroelectric generating set can be applied to any computer device, so that the computer device can perform the early warning function for the oil level of the bearing oil tank of the hydroelectric generating set.

The Computer device may be a Personal Computer (PC), a cloud device, a mobile device, and the like, and the mobile device may be a hardware device having various operating systems, touch screens, and/or display screens, such as a mobile phone, a tablet Computer, a Personal digital assistant, a wearable device, and an in-vehicle device.

Fig. 1 is a schematic flow diagram of an early warning method for an oil level of a bearing oil tank of a hydroelectric generating set according to an embodiment of the present disclosure.

As shown in fig. 1, the method for early warning of the oil level of the bearing oil tank of the hydroelectric generating set may include the following steps:

step 101, obtaining current equipment parameters of the hydroelectric generating set to be monitored and a first oil level value of a bearing oil tank.

The device parameter may be a parameter value of any component in the hydroelectric generating set to be detected, such as a rotation speed value, a current value, a power value, and the like of the hydroelectric generating set, which is not limited in this disclosure.

In addition, the hydroelectric generating set in the present disclosure may be a vertical hydroelectric generating set, such as a mixed-flow hydroelectric generating set, an axial-flow hydroelectric generating set, and the like, which is not limited in the present disclosure.

In addition, the bearing oil tank may have multiple oil levels, for example, the oil level may be an upper guide bearing oil tank, a lower guide bearing oil tank, a thrust bearing oil tank, a water guide bearing oil tank, or the like, which is not limited by the disclosure

Therefore, in the embodiment of the disclosure, the oil level of any one bearing oil tank in the hydroelectric generating set may be monitored, or the oil level value of a part of the bearing oil tanks may also be monitored, or the oil level value of each bearing oil tank may also be monitored, and the like, which is not limited by the disclosure.

Optionally, the oil in the bearing of the hydro-electric generating set in the present disclosure may be turbine oil, and the functions of the oil may include: lubrication, heat dissipation, hydraulics, etc. Wherein, the turbine oil can form an oil film between the bearing room or the sliding part, and the liquid of the lubricating oil replaces the solid dry-check, thereby reducing the heating and the abrasion of the equipment and ensuring the safe operation of the equipment. In addition, the work consumed by the rotating parts of the unit due to friction is converted into heat energy, so that the temperature of oil and equipment is increased, and lubricating oil can conduct the heat energy to cooling water under the action of convection. In addition, the governor system, the main valve and the hydraulic valves in the pipelines of oil, gas and water systems of hydraulic power plants need to be operated by high-pressure oil, and turbine oil can be used as a working medium for transferring energy. In the running process of the hydroelectric generating set, the main shaft inevitably generates radial vibration, so that the friction phenomenon between the bearing bush and the bush collar of the upper guide bearing, the lower guide bearing and the water guide bearing can be caused, at the moment, turbine oil in the bearing can be needed to reduce and relieve the radial vibration and the heat generated by the friction of the bearing, and the lubricating and heat radiating effects are achieved. Therefore, the volume of oil in the bearing is vital to bearing lubrication and heat dissipation, in order to prevent oil leakage of a system and other faults of an oil groove, the oil level in the oil tank cannot be too high or too low, real-time early warning can be carried out on the change of the oil tank, and accidents such as rise of the temperature of a bush and the like caused by reduction of the oil quantity are avoided, so that the occurrence of machine halt and the like is avoided.

And 102, determining the state of the hydroelectric generating set based on the equipment parameters.

The state of the hydroelectric generating set may be various, for example, the hydroelectric generating set may be in a starting operation state, or may also be in a shutdown state, an unoperated state, and the like, which is not limited in this disclosure.

For example, in the case of a rotational speed as the installation parameter, if the rotational speed is zero, the state of the hydroelectric power generating unit may be determined as: stopping the machine and not operating; or, if the rotation speed of the hydroelectric generating set is n1, it may be determined that the current state of the hydroelectric generating set is: a power-on running state, etc. The present disclosure is not limited thereto.

And 103, determining upper and lower limits of the target oil level based on the state of the hydroelectric generating set.

Optionally, the rotation speed of the hydroelectric generating set can be monitored, and if the rotation speed of the hydroelectric generating set is kept to be zero, the hydroelectric generating set can be determined to be in a shutdown state; if the rotation speed of the hydroelectric generating set changes from zero to a non-zero value at a certain moment, it may be determined that the hydroelectric generating set starts to be started at the moment, it may be determined that the hydroelectric generating set is in a startup operation state after the moment, and the like, which is not limited by the present disclosure.

It will be appreciated that the condition of the hydro-power generating unit may vary, and that the oil level may also vary for the same bearing reservoir.

For example, typically at the beginning of the boot operation: the upper guide bearing oil level may be nearly constant, the thrust bearing oil sump level may slowly increase by about 10mm, and the water guide oil sump level may drop abruptly. And during shutdown: the upper oil guide groove oil level, the thrust bearing oil groove oil level may not be changed, the water oil guide groove oil level may suddenly increase by about 50mm, and the like, which is not limited in this disclosure.

Therefore, in the embodiment of the disclosure, the corresponding upper and lower limits of the oil level can be selected according to the state of the hydroelectric generating set and the type of the bearing oil tank, so that the accuracy and the reliability of the selection of the upper and lower limits of the oil level are ensured as much as possible.

Optionally, the upper and lower limits of the target oil level may also be determined from a preset oil level data base based on the state of the hydroelectric generating set and the type of the bearing oil tank.

The preset oil level value database stores a large amount of oil level value data which can correspond to the state of the hydroelectric generating set, the type of a bearing oil tank and the like.

For example, if the preset oil level data base stores oil level data as follows: the hydro-power generating unit is in a starting operation state, the upper limit of the oil level of an upper guide bearing oil tank is X1, the upper limit of the oil level of a lower guide bearing oil tank is X2, the upper limit of the oil level of a thrust bearing oil tank is X3, and the upper limit of the oil level of a water guide bearing oil tank is X4; the hydroelectric generating set is in a shutdown state, the oil level of an upper guide bearing oil tank may be Y1, the lower limit of the oil level of a lower guide bearing is Y2, the lower limit of the oil level of a thrust bearing is Y3, the lower limit of the oil level of a water guide bearing is Y4, and the like. If the current several-low grade group is in a starting operation state and is a water guide bearing, the corresponding upper and lower limits of the target oil level can be determined as follows: and in the starting state, the upper limit of the oil level of the water guide bearing is X4. The present disclosure is not limited thereto.

Therefore, in the embodiment of the disclosure, the corresponding upper and lower limits of the target oil level can be determined based on the state of the hydroelectric generating set and the type of the bearing oil tank, and then the early warning and judgment of the oil level of the bearing oil tank of the hydroelectric generating set are performed based on the corresponding upper and lower limits of the oil level, so that conditions are provided for improving the accuracy of oil level monitoring of the bearing oil tank.

And 104, determining whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal or not according to the first oil level value and the upper limit and the lower limit of the target oil level.

And 105, performing abnormity early warning under the condition that the oil level of the bearing oil tank of the hydroelectric generating set is abnormal.

For example, when the current hydro-power generating unit is in a start-up running state, and the first oil level value of the upper guide bearing oil tank is X0, which is smaller than the upper limit X1 of the oil level of the upper guide bearing oil tank in the start-up state, it may be determined that the oil level of the bearing oil tank of the hydro-power generating unit is normal.

Or, if the current hydroelectric generating set is in a starting operation state, and the first oil level value of the upper guide bearing oil tank is X5, which is greater than the upper limit X1 of the oil level of the upper guide bearing oil tank in the starting state, it may be determined that the oil level of the bearing oil tank of the hydroelectric generating set is abnormal.

It should be noted that the above examples are only illustrative, and cannot be taken as a limitation on the manner of determining the oil level state of the bearing oil tank of the hydro-power generating unit in the embodiment of the present disclosure.

Therefore, in the embodiment of the disclosure, the upper limit and the lower limit of the target oil level can be determined based on the state of the hydroelectric generating set, and then the condition of the oil level of the bearing oil tank of the hydroelectric generating set is determined based on the relationship between the current first oil level value and the upper limit and the lower limit.

Optionally, generally, after the hydroelectric generating set is started, it may take a period of time to enter the steady operation, so in the embodiment of the present disclosure, a first preset duration may be set, that is, after the hydroelectric generating set is started and then passes through the first preset duration, and tends to the steady operation, the first oil level value is obtained. After the hydroelectric generating set is stopped, the hydroelectric generating set can also tend to be balanced in a period of time, and then a second preset time period can also be set, namely after the hydroelectric generating set is stopped and then the second time period is passed, and the hydroelectric generating set tends to be stable, the first oil level value is obtained, and the early warning of the oil level of a bearing oil tank of the hydroelectric generating set is carried out.

The first preset time period and the second preset time period may be the same or different, and the disclosure does not limit this.

It can be understood that when the oil level of the bearing oil tank of the hydroelectric generating set is determined to be abnormal or not according to the first oil level value and the upper and lower limits of the oil level, if the oil level of the oil tank is abnormal, grading early warning can be performed. For example, the upper limit and the lower limit of each oil level value corresponding to each level of early warning may be set in advance, which is not limited in this disclosure.

For example, a primary warning, a secondary warning, and a tertiary warning may be set. The first-level early warning can be an accident point or a focused event which needs to be immediately stopped or power-off processed. The secondary warning may be a point of failure requiring immediate emergency treatment or an event requiring close attention. The third-level early warning may be other early warnings besides the first-level early warning and the second-level early warning, and the like, which is not limited by the disclosure.

Optionally, under the condition that the hydroelectric generating set is in a starting state and the first oil level value is greater than the first oil level value upper limit, determining to perform primary upper limit early warning in the starting state; determining to perform secondary upper limit early warning in the starting state under the conditions that the hydroelectric generating set is in the starting state, and the first oil level value is smaller than the first oil level value upper limit and larger than the second oil level value upper limit; determining to perform primary lower limit early warning in the starting state under the condition that the hydroelectric generating set is in the starting state and the first oil level value is smaller than the first oil level value lower limit; determining to perform secondary early warning in the starting state under the conditions that the hydroelectric generating set is in the starting state, and the first oil level value is smaller than the lower limit of the second oil level value and larger than the lower limit of the first oil level value; when the hydroelectric generating set is in a shutdown state and the first oil level value is larger than the upper limit of the third oil level value, determining to perform primary upper limit early warning in the shutdown state; determining to perform secondary upper limit early warning in the shutdown state under the conditions that the hydroelectric generating set is in the shutdown state, and the first oil level value is smaller than the third oil level value upper limit and larger than the fourth oil level value upper limit; when the hydroelectric generating set is in a shutdown state and the first oil level value is smaller than the lower limit of the third oil level value, determining to perform primary lower limit early warning in the shutdown state; and under the condition that the hydroelectric generating set is in a shutdown state, and the first oil level value is smaller than the lower limit of the fourth oil level value and larger than the lower limit of the third oil level value, determining to perform secondary lower limit early warning on the shutdown state.

Or, when the oil level of the bearing oil tank of the hydro-power generating unit is abnormal, the abnormality early warning may also be as shown in the following table 1:

TABLE 1

It should be noted that the above examples are only illustrative, and should not be taken as a limitation on performing oil level warning and the like in the embodiments of the present disclosure.

Or, as shown in fig. 1A, if the oil level of the upper guide bearing oil tank changes as shown by a solid line in fig. 1A in the start-up running state of the hydroelectric generating set, as can be seen from fig. 1A, if the current time is t1, the first oil level value of the upper guide bearing oil tank exceeds the "start-up state secondary upper limit early warning" at the time t0, but does not exceed the "start-up state primary upper limit early warning", then the "start-up state secondary upper limit early warning" may be performed at this time to remind an operator that the oil level of the upper guide bearing oil tank of the hydroelectric generating set is abnormal, and the oil level needs to be processed in time, so as to ensure the smooth running of the hydroelectric generating set.

The above examples are merely illustrative, and are not intended to limit the manner of performing the warning of the abnormality of the bearing oil tank in the embodiments of the present disclosure.

According to the embodiment of the disclosure, the current equipment parameters of the hydroelectric generating set to be monitored and the first oil level value of the bearing oil tank can be obtained firstly, then the state of the hydroelectric generating set can be determined based on the equipment parameters, then the upper limit and the lower limit of the target oil level are determined based on the state of the hydroelectric generating set, then whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal or not can be determined according to the first oil level value and the upper limit and the lower limit of the oil level, and under the condition that the oil level is abnormal, abnormal early warning is carried out. Therefore, the upper limit and the lower limit of the target oil level can be determined based on the state of the hydroelectric generating set, then whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal at the current moment is determined based on the relation between the current first oil level value of the hydroelectric generating set and the upper limit and the lower limit of the target oil level, and abnormity early warning is carried out, so that the accuracy and the reliability of monitoring the oil level of the bearing oil tank of the hydroelectric generating set are improved, the conditions of running faults and the like of the hydroelectric generating set caused by the fact that the oil level of the oil tank is not known timely are avoided, and further conditions are provided for guaranteeing the stable running of the hydroelectric generating set.

Fig. 2 is a schematic flow diagram of an early warning method for an oil level of a bearing oil tank of a hydroelectric generating set according to an embodiment of the present disclosure.

As shown in fig. 2, the method for early warning of the oil level of the bearing oil tank of the hydroelectric generating set may include the following steps:

step 201, obtaining the historical oil level value of each bearing oil tank of the hydroelectric generating set in different states in the first time period.

The first time period may be a time period set in advance, for example, may be about three months, about half a year, about one year, and the like, which is not limited by the present disclosure.

In addition, the state of the hydroelectric generating set has multiple states, for example, the hydroelectric generating set may be in a starting operation state, or may also be in a shutdown state, and the like, which is not limited in this disclosure.

Optionally, the device parameter of the hydro-power generating unit within the first time period may be obtained first, then the starting time and the stopping time of the hydro-power generating unit may be determined according to the device parameter, then the first delay time corresponding to the starting state and the second delay time corresponding to the stopping state are determined based on the type of the hydro-power generating unit, and then the oil level value after the starting time passes through the first delay time and the oil level value after the stopping time passes through the second delay time may be obtained.

The starting time and the stopping time of the hydroelectric generating set can be determined according to equipment parameters of the hydroelectric generating set within the first time period, such as a rotating speed value. For example, the time when the rotation speed value changes from zero to a non-zero value is the starting time; at the moment when the rotating speed value changes from a non-zero value to zero, and at the moment of stopping.

It can be understood that, within the first duration, the starting time of the hydroelectric generating set may be one time, or may be multiple times; the shutdown time may be one time, or may be multiple times, etc., and the disclosure is not limited thereto.

In addition, generally, after the hydro-power generating unit is started, it may take a period of time to enter the stable operation, that is, after the hydro-power generating unit is started and then runs for a first delay time, the oil level of the oil tank tends to be stable. Correspondingly, the hydro-power generating unit can also tend to be balanced after being shut down for a period of time, namely the oil level of the oil tank tends to be stable after the hydro-power generating unit is shut down and then is prolonged by the second delay time.

The first delay time and the second delay time may be the same as the type of the hydroelectric generating set, for example, the first delay time and the second delay time may be the same as or different from each other, and the disclosure does not limit this.

In addition, the first delay time duration and the second delay time duration may be the same, or may also be different, and so on, which is not limited in this disclosure.

For example, if the rotation speed of the hydroelectric generating set changes from zero to a non-zero value in 2 months, 10 days, 13 days, 00, the starting time 1 of the hydroelectric generating set can be determined as follows; if the rotating speed of the hydroelectric generating set changes from a non-zero value to a zero value in 2 months, 11 days and 8 days, then determining that the rotating speed in 2 months, 11 days and 8 days is; if the rotation speed of the hydroelectric generating set changes from zero to non-zero in 20 days in 2 months and 11 days, then the 20 days in 2 months and 11 days can be determined as the starting time 2 of the hydroelectric generating set; if the rotation speed of the hydroelectric generating set changes from a non-zero value to a zero value in 2 months, 12 days and 7, 00, the shutdown time 2 of the hydroelectric generating set can be determined as follows.

As the hydroelectric generating set belongs to the mixed-flow hydroelectric generating set, the corresponding first delay time is 8 minutes, and the corresponding second delay time is 10 minutes. Then, the historical oil level values of the bearing oil tanks from 8 minutes after the startup time 1 to the shutdown time 1, that is, the historical oil level values from 2 months, 10 days, 13 to 2 months, 11 days, 8. The oil level value between 2 months, 11 days, 8, and 10 to 2 months, 11 days, 20, 00 can then be obtained as the historical oil level value in the shutdown state. Then, as the historical oil level value in the power-on state, the oil level value between 20 in month 2 and 11 and 7 in months 2 and 12 and 00. The oil level value after 7/10/12/2 can be acquired as the historical oil level value in the shutdown state.

It should be noted that the above examples are merely illustrative, and are not intended to limit the way of obtaining the historical oil level value in the implementation of the present disclosure.

Step 202, according to the state of the hydroelectric generating set and the type of the bearing oil tank, arranging the historical oil level values in a descending order to generate a plurality of corresponding oil level value sets.

After the historical oil level values of the bearing oil tanks of the hydroelectric generating set are obtained, the historical oil level values can be sequenced from high to low according to the state of the hydroelectric generating set and the types of the bearing oil tanks, so that oil level value sets corresponding to the bearing oil tanks of different types in different states are obtained.

For example, for the hydro-power generating unit 1, if the obtained historical oil level values include: the oil level value of the oil groove of the upper guide bearing 1 in the starting state, the oil level value of the oil groove of the upper guide bearing 2 in the starting state, the oil level of the oil groove of the thrust bearing in the stopping state and the oil level of the oil groove of the lower guide bearing in the starting state. Then, the "oil level value of the oil groove of the upper guide bearing 1 in the startup state" and the "oil level value of the oil groove of the upper guide bearing 2 in the startup state" may be used as the same oil level value set, that is, the "oil level value set of the oil groove of the upper guide bearing in the startup state", the "oil level value set of the oil groove of the thrust bearing in the shutdown state", and the "oil level value set of the oil groove of the lower guide bearing in the startup state" may be obtained. The individual oil level values in the set of oil level values may then be arranged in order. For example, for the "oil level value set of the upper guide bearing oil groove in the power-on state", the historical oil level values in the oil level value set may be arranged in the descending order.

It should be noted that the above examples are only illustrative, and cannot be taken as a limitation on the manner of determining the oil level health value interval and the like in the embodiments of the present disclosure.

And 203, updating the oil level value set based on the preset confidence coefficient and the number of historical oil level values contained in the oil level value set to generate an oil level health value interval corresponding to the state of the hydroelectric generating set and the type of the bearing oil tank, wherein the oil level health value interval comprises an upper limit oil level value and a lower limit oil level value.

Optionally, a third oil level value and a fourth oil level value in the oil level value set may be determined based on the preset confidence and the number of historical oil level values included in the oil level value set, and then the third oil level value and the fourth oil level value may be rounded to determine corresponding upper limit oil level value and lower limit oil level value.

For example, in the case of a confidence of 98.5%, if the number of historical oil level values included in the "upper guide bearing oil groove oil level value set in the on state" is 100, then it may be determined that the corresponding third oil level value may be: 100 x (1-98.5%)/2 =7.5; the fourth oil level value may be: 100-100 x (1-98.5%)/2 =92.5, and then the third oil level value and the fourth oil level value may be rounded to obtain corresponding upper limit oil level values: 8, and lower oil level limit: 92.

it should be noted that the above examples are only illustrative, and cannot be taken as a limitation for determining the upper limit oil level value, the lower limit oil level value, and the like in the embodiments of the present disclosure.

Alternatively, the upper limit oil level value and the lower limit oil level value corresponding to the oil level health value interval can be determined by directly using the following formulas (1) and (2).

hp_up＝ROUND[N*(1-CI)/2]

hp_down＝N-ROUND[N*(1-CI)/2] (2)

Where hp _ up is an upper limit oil level value, ROUND represents rounding, N is the number of historical oil level values contained in the oil level value set, and CI is confidence.

When the third oil level value and the fourth oil level value are rounded, the third oil level value may be rounded upward to obtain an upper limit oil level value, the fourth oil level value may be rounded downward to obtain a lower limit oil level value, and the like, which is not limited in this disclosure.

Optionally, the upper limit margin and the lower limit margin may be determined based on the number of historical oil level values included in the oil level value set and/or the type of the bearing oil tank, the upper limit oil level value is updated by using the upper limit margin, and the lower limit oil level value is updated by using the lower limit margin, so as to determine the oil level health value interval.

The upper limit margin and the lower limit margin may be values set in advance, or may be adjusted based on actual conditions. For example, the larger the number of the historical oil level values is, the larger the numerical values corresponding to the upper limit margin and the lower limit margin may be; the smaller the number of historical oil level values, the smaller the values corresponding to the upper and lower margins may be, and so on. Alternatively, the upper limit margin corresponding to the mixed-flow hydroelectric generating set may be 0.5, the upper limit margin corresponding to the axial-flow hydroelectric generating set may be 0.05, and the like, which is not limited in this disclosure.

Therefore, in the embodiment of the disclosure, by setting the corresponding margin value, the oil level health value interval can have a certain margin, so that the occurrence of false alarm is reduced.

For example, if the upper limit margin mar _ up (upper margin) is: 0.5, then the upper limit oil level value +0.5 can be used as the updated upper limit oil level value; if the lower limit margin mar _ down (down margin) is: 1, the lower limit oil level value of-1 may be used as the updated lower limit oil level value, etc., which is not limited by this disclosure.

Therefore, in the embodiment of the present disclosure, a corresponding oil level health value interval may be determined according to the upper limit oil level value hv _ up, the lower limit oil level value hv _ down, the upper limit margin mar _ up, and the lower limit margin mar _ down, where the oil level health value interval may be represented as: [ lower limit oil level value hv _ down-lower limit margin mar _ down, upper limit oil level value hv _ up + upper limit margin mar _ up ], and the like, which are not limited by the present disclosure.

Therefore, in the embodiment of the disclosure, the range of the healthy oil level value can be determined based on the running condition of the hydroelectric generating set and the historical data of the oil level of the bearing oil groove, and the combination of the confidence degree and the margin, that is, the upper limit oil level value and the lower limit oil level value are determined, so that the subjectivity of manually setting the healthy oil level threshold is avoided. And then, based on the oil level health value interval, when the bearing oil level of the hydroelectric generating set is early warned, the conditions of starting/stopping states, time delay and the like of the hydroelectric generating set are fully considered, so that the early warning of the bearing oil level is more accurate and reliable, and conditions are provided for guaranteeing the stable operation of the hydroelectric generating set.

Optionally, in this embodiment of the present disclosure, the oil level health value interval may also be updated according to a preset period, and the updated oil level health value may be stored in the oil level data base.

The preset period may be one week, 10 days, one month, etc., which is not limited by the present disclosure.

For example, if the preset period is 10 days, after an oil level health value interval corresponding to any one bearing oil tank in a certain type of hydroelectric generating set is determined, oil level value data of approximately 3 months or approximately 6 months may be acquired every 10 days, and the oil level health value interval is updated to ensure accuracy and reliability of the oil level health value interval. And then, the updated healthy value interval of the oil level can be stored in an oil level data base, so that in the actual use process, if the oil level of a bearing oil tank of the hydroelectric generating set needs to be judged, the corresponding healthy value interval of the oil level can be directly called in the oil level data base according to the state of the hydroelectric generating set, the type of the bearing oil tank and the like, the situation that the oil level of the bearing oil tank needs to be recalculated every time is avoided, the data processing process is reduced, and the efficiency is improved.

According to the embodiment of the disclosure, the historical oil level values of each bearing oil tank of the hydroelectric generating set in different states within the first time period can be obtained first, then the historical oil level values can be arranged from large to small according to the states of the hydroelectric generating set and the types of the bearing oil tanks to generate a plurality of corresponding oil level value sets, the oil level value sets are updated based on the preset confidence degrees and the number of the historical oil level values contained in the oil level value sets to generate oil level health value intervals corresponding to the states of the hydroelectric generating set and the types of the bearing oil tanks, wherein the oil level health value intervals comprise upper limit oil level values and lower limit oil level values. Therefore, in the process of generating the interval of the oil level health value, the state of the hydroelectric generating set, the type and the confidence coefficient of the bearing oil tank are fully considered, so that the upper limit oil level value and the lower limit oil level value in the interval of the oil level health value can be more accurate and reliable, and conditions are provided for improving the accuracy of the oil level monitoring and early warning of the bearing oil tank of the hydroelectric generating set.

In order to realize the embodiment, the disclosure further provides an early warning device for the oil level of the bearing oil tank of the hydroelectric generating set.

Fig. 3 is a schematic structural diagram of an early warning device for an oil level of a bearing oil tank of a hydroelectric generating set according to an embodiment of the present disclosure.

As shown in fig. 3, the early warning device 100 for the oil level of the bearing oil tank of the hydroelectric generating set may include: the system comprises a first acquisition module 110, a first determination module 120, a second determination module 130, a third determination module 140 and an early warning module 150.

The acquiring module 110 is a first acquiring module, and is configured to acquire a current device parameter of the hydroelectric generating set to be monitored and a first oil level value of a bearing oil tank.

A first determining module 120 is configured to determine a state of the hydroelectric generating set based on the device parameter.

The second determining module 130 is configured to determine upper and lower limits of a target oil level based on the state of the hydroelectric generating set.

A third determining module 140, configured to determine whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal according to the first oil level value and the upper and lower limits of the target oil level;

and the early warning module 150 is used for performing abnormal early warning under the condition that the oil level of the bearing oil tank of the hydroelectric generating set is abnormal.

Optionally, the second determining module 130 is specifically configured to:

Optionally, the method further includes:

and the fifth determining module is used for determining an oil level health value interval corresponding to the state of the hydroelectric generating set and the type of the bearing oil tank based on the preset confidence coefficient and the number of historical oil level values contained in the oil level value set, wherein the oil level health value interval comprises an upper limit oil level value and a lower limit oil level value.

Optionally, the fifth determining module is specifically configured to:

Optionally, the fifth determining module is further configured to:

updating the oil level health value interval according to a preset period;

and storing the updated oil level health value into an oil level data base.

Optionally, the second obtaining module is specifically configured to:

Optionally, the third determining module 140 is specifically configured to:

when the hydroelectric generating set is in a shutdown state, and the first oil level value is smaller than the upper limit of the third oil level value and larger than the upper limit of the fourth oil level value, determining to perform secondary upper limit early warning in the shutdown state; determining to perform primary lower limit early warning in the shutdown state under the condition that the hydroelectric generating set is in the shutdown state and the first oil level value is smaller than the lower limit of the third oil level value;

The functions and specific implementation principles of the modules in the embodiments of the present disclosure may refer to the embodiments of the methods, and are not described herein again.

The early warning device for the bearing oil tank oil level of the hydroelectric generating set, provided by the embodiment of the disclosure, can acquire the current equipment parameters of the hydroelectric generating set to be monitored and the first oil level value of the bearing oil tank, then determine the state of the hydroelectric generating set based on the equipment parameters, then determine the upper and lower limits of the target oil level based on the state of the hydroelectric generating set, then determine whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal or not according to the first oil level value and the upper and lower limits of the oil level, and perform abnormal early warning under the condition that the oil level is abnormal. Therefore, the upper limit and the lower limit of the target oil level can be determined based on the state of the hydroelectric generating set, then whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal at the current moment is determined based on the relation between the current first oil level value of the hydroelectric generating set and the upper limit and the lower limit of the target oil level, and abnormity early warning is carried out, so that the accuracy and the reliability of oil level monitoring of the bearing oil tank of the hydroelectric generating set are improved, the situations of running faults and the like of the hydroelectric generating set caused by the fact that the oil level of the oil tank is abnormal and not known in time are avoided, and conditions are provided for guaranteeing the stable running of the hydroelectric generating set.

In order to implement the foregoing embodiment, the present disclosure further provides a computer device, including: the early warning method for the bearing oil tank oil level of the hydroelectric generating set comprises a memory, a processor and a computer program which is stored in the memory and can run on the processor, wherein when the processor executes the program, the early warning method for the bearing oil tank oil level of the hydroelectric generating set is realized.

In order to achieve the above embodiments, the present disclosure further provides a non-transitory computer readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the method for early warning of the oil level of the bearing oil tank of the hydroelectric generating set according to the above embodiments of the present disclosure.

In order to implement the above embodiments, the present disclosure further provides a computer program product, which when executed by an instruction processor in the computer program product, executes the method for early warning of the oil level of the bearing oil tank of the hydroelectric generating set according to the foregoing embodiments of the present disclosure.

FIG. 4 illustrates a block diagram of an exemplary computer device suitable for use in implementing embodiments of the present disclosure. The computer device 12 shown in fig. 4 is only one example and should not bring any limitations to the functionality or scope of use of the embodiments of the present disclosure.

As shown in FIG. 4, computer device 12 is in the form of a general purpose computing device. The components of computer device 12 may include, but are not limited to: one or more processors or processing units 16, a system memory 28, and a bus 18 that couples various system components including the system memory 28 and the processing unit 16.

Bus 18 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, and a processor or local bus using any of a variety of bus architectures. By way of example, such architectures include, but are not limited to, industry Standard Architecture (ISA) bus, micro Channel Architecture (MAC) bus, enhanced ISA bus, video Electronics Standards Association (VESA) local bus, and Peripheral Component Interconnect (PCI) bus.

Computer device 12 typically includes a variety of computer system readable media. Such media can be any available media that is accessible by computer device 12 and includes both volatile and nonvolatile media, removable and non-removable media.

Memory 28 may include computer system readable media in the form of volatile Memory, such as Random Access Memory (RAM) 30 and/or cache Memory 32. Computer device 12 may further include other removable/non-removable, volatile/nonvolatile computer system storage media. By way of example only, storage system 34 may be used to read from and write to non-removable, nonvolatile magnetic media (not shown in FIG. 4, and commonly referred to as a "hard drive"). Although not shown in FIG. 4, a disk drive for reading from and writing to a removable, nonvolatile magnetic disk (e.g., a "floppy disk") and an optical disk drive for reading from or writing to a removable, nonvolatile optical disk (e.g., a Compact disk Read Only Memory (CD-ROM), a Digital versatile disk Read Only Memory (DVD-ROM), or other optical media) may be provided. In these cases, each drive may be connected to bus 18 by one or more data media interfaces. Memory 28 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of embodiments of the disclosure.

A program/utility 40 having a set (at least one) of program modules 42 may be stored, for example, in memory 28, such program modules 42 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which examples or some combination thereof may comprise an implementation of a network environment. Program modules 42 generally perform the functions and/or methodologies of the embodiments described in this disclosure.

Computer device 12 may also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), with one or more devices that enable a user to interact with computer device 12, and/or with any devices (e.g., network card, modem, etc.) that enable computer device 12 to communicate with one or more other computing devices. Such communication may be through an input/output (I/O) interface 22. Moreover, computer device 12 may also communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN) and/or a public Network such as the Internet via Network adapter 20. As shown, network adapter 20 communicates with the other modules of computer device 12 via bus 18. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with computer device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, to name a few.

The processing unit 16 executes various functional applications and data processing, for example, implementing the methods mentioned in the foregoing embodiments, by executing programs stored in the system memory 28.

According to the technical scheme, the current equipment parameters of the hydroelectric generating set to be monitored and the first oil level value of the bearing oil tank can be obtained firstly, then the state of the hydroelectric generating set can be determined based on the equipment parameters, then the upper limit and the lower limit of the target oil level are determined based on the state of the hydroelectric generating set, then whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal or not can be determined according to the first oil level value and the upper limit and the lower limit of the oil level, and under the condition that the oil level is abnormal, abnormal early warning is carried out. Therefore, the upper limit and the lower limit of the target oil level can be determined based on the state of the hydroelectric generating set, then whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal at the current moment is determined based on the relation between the current first oil level value of the hydroelectric generating set and the upper limit and the lower limit of the target oil level, and abnormity early warning is carried out, so that the accuracy and the reliability of monitoring the oil level of the bearing oil tank of the hydroelectric generating set are improved, the conditions of running faults and the like of the hydroelectric generating set caused by the fact that the oil level of the oil tank is not known timely are avoided, and further conditions are provided for guaranteeing the stable running of the hydroelectric generating set.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present disclosure in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.

The logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.

It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried out in the method of implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present disclosure may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.

Claims

1. The early warning method for the oil level of the bearing oil tank of the hydroelectric generating set is characterized by comprising the following steps of:

and carrying out abnormity early warning under the condition that the oil level of the bearing oil tank of the hydroelectric generating set is abnormal.

2. The method of claim 1, wherein determining upper and lower target oil level limits based on the state of the hydro-power-generating unit comprises:

3. The method of claim 2, wherein prior to said determining target oil level upper and lower limits from a preset oil level database, further comprising:

arranging the historical oil level values in a descending order according to the state of the hydroelectric generating set and the type of the bearing oil tank so as to determine a corresponding oil level value set;

4. The method according to claim 3, wherein determining an oil level health interval corresponding to the state of the hydro-power generating unit and the type of bearing tank based on a preset confidence level and the number of historical oil level values included in the oil level value set comprises:

5. The method of claim 3, wherein determining an interval of oil level health values corresponding to the state of the hydro-power generating unit and the type of bearing tank based on a preset confidence level and a number of historical oil level values included in the set of oil level values comprises:

6. The method of claim 3, wherein after determining the interval of oil level health values corresponding to the condition of the hydro-power generating unit and the type of bearing reservoir, further comprising:

updating the oil level health value interval according to a preset period;

and storing the updated oil level health value into an oil level data base.

7. The method of claim 3, wherein the obtaining historical oil level values for each bearing tank of the hydroelectric generating set in different states for the first duration comprises:

8. The method of claim 1, wherein determining whether the hydro-power unit bearing tank oil level is abnormal based on the first oil level value and the upper and lower target oil level limits comprises:

when the hydroelectric generating set is in a shutdown state and the first oil level value is larger than the upper limit of the third oil level value, determining to perform primary upper limit early warning in the shutdown state;

when the hydroelectric generating set is in a shutdown state, and the first oil level value is smaller than the upper limit of the third oil level value and larger than the upper limit of the fourth oil level value, determining to perform secondary upper limit early warning in the shutdown state; determining to perform primary lower limit early warning in a shutdown state under the condition that the hydroelectric generating set is in the shutdown state and the first oil level value is smaller than the lower limit of the third oil level value;

9. The utility model provides an early warning device of hydroelectric generating set bearing oil tank oil level which characterized in that includes:

the third determining module is used for determining whether the oil level of the bearing oil tank of the hydroelectric generating set is abnormal or not according to the first oil level value and the upper and lower limits of the target oil level;

10. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, when executing the program, implementing a method for providing an early warning of the level of a bearing reservoir of a hydroelectric generating set according to any of claims 1 to 8.