CN117005976A

CN117005976A - Water level monitoring device and method for increasing power generation capacity of hydropower station by utilizing wind and light energy

Info

Publication number: CN117005976A
Application number: CN202310865130.0A
Authority: CN
Inventors: 陈哲之; 方兴波; 刘瑞平; 韩国苍; 和雪林; 李文锋
Original assignee: Three Gorges Jinsha River Yunchuan Hydropower Development Co ltd
Current assignee: Three Gorges Jinsha River Yunchuan Hydropower Development Co ltd
Priority date: 2023-07-14
Filing date: 2023-07-14
Publication date: 2023-11-07

Abstract

The application discloses a water level monitoring device and a method for increasing generating capacity of a hydropower station by utilizing wind and light energy, wherein the water level monitoring device comprises a main body part, a shell and a water level sensor, wherein an induction piece is arranged in the shell; and the flow guiding assembly comprises a flow disturbing piece arranged at one end of the shell and transmission pieces arranged at two sides of the induction piece. It not only can long-range real-time check river water level condition, can also prevent that the device from receiving the damage when rivers increase. The method for increasing the generating capacity of the hydropower station by utilizing wind and solar energy comprises the steps of setting pumping condition parameters of a downstream water pump; judging whether the downstream water level meets the condition parameters or not through a water level monitoring device; judging whether the voltage of the photovoltaic panel or the wind driven generator is normal or not; judging whether the inverter is normal or not; according to the method, the downstream river water resources of the hydropower station are pumped back to the upstream reservoir area of the hydropower station to store energy, so that the generating capacity of the hydropower station can be effectively increased, and meanwhile, the damage of a distributed power supply to a power grid is avoided.

Description

Water level monitoring device and method for increasing power generation capacity of hydropower station by utilizing wind and light energy

Technical Field

The application relates to the technical field of electric power application, in particular to a water level monitoring device and a method for increasing power generation by utilizing wind and light energy in a hydropower station.

Background

The watershed where the hydropower station is located is rich in water energy, wind energy and solar energy resources, which is favorable for realizing complementation of water and wind energy resources, but the intermittence and instability of wind and light output caused by the influence of weather, wind speed and the like exist in wind power generation, and as the wind power and solar power generation output is direct current, the direct current is converted into alternating current by using an inverter to be connected with the grid, the inverter is in a high-frequency working state, and high-frequency harmonic pollution is easy to generate; more serious is that both wind power generation and solar power generation need to build corresponding transmission lines. If the existing transmission line of the hydropower station is utilized, the line form needs to be changed, so that the protection becomes more complex. The hydroelectric generating set has the advantages of flexible start and stop, higher adjustment speed and the like, and can more efficiently solve the problems of unstable output and intermittence caused by large-scale grid connection of wind and light. Therefore, by utilizing uncontrollable energy of wind energy and light energy, the downstream river water resources of the hydropower station are pumped back to the upstream reservoir area of the hydropower station to realize energy storage, so that the generated energy of the hydropower station can be effectively increased, and meanwhile, the damage of a distributed power supply to a power grid is avoided. Meanwhile, the method needs to monitor the water level in real time, and the existing water level monitoring mode generally utilizes a water level scale to monitor human eyes and cannot achieve real-time remote monitoring. Some electronic monitoring devices are susceptible to damage when the water flow becomes large.

Disclosure of Invention

This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.

The present application has been made in view of the problems occurring in the above-mentioned water level measuring apparatus.

It is therefore an object of the present application to provide a water level monitoring apparatus which can solve the problem that an electronic water level monitoring device is placed in water throughout the year and is easily damaged once the water flow increases.

In order to solve the technical problems, the application provides the following technical scheme: a water level monitoring device comprising, a body member including a housing having an sensing member disposed therein; and the flow guiding assembly comprises a flow disturbing piece arranged at one end of the shell and transmission pieces arranged at two sides of the induction piece.

As a preferable mode of the water level monitoring device of the present application, wherein: one end of the shell is conical, long waist grooves are formed in two side walls of the shell, the induction piece comprises an impeller arranged in the shell, and two shaft ends of the impeller are arranged in the long waist grooves.

As a preferable mode of the water level monitoring device of the present application, wherein: the induction piece is characterized by further comprising connecting loop bars arranged at two ends of the impeller rotating shaft, the connecting loop bars are connected with the impeller rotating shaft bearings, a floating plate and a reflecting plate are respectively arranged at the bottom end and the top end of the connecting loop bars, and a distance sensor is arranged on the inner wall of the shell right above the reflecting plate.

As a preferable mode of the water level monitoring device of the present application, wherein: the spoiler comprises at least one spoiler arranged on two sides of the conical end of the shell, the spoiler is in running fit with the side wall of the shell, and a gear is further arranged at the shaft end of the top of the spoiler.

As a preferable mode of the water level monitoring device of the present application, wherein: the inside of spoiler still is provided with the interior runner, the one end of interior runner communicates with the long limit of spoiler, and the other end communicates with its long side, the export of interior runner is provided with a plurality of.

As a preferable mode of the water level monitoring device of the present application, wherein: the transmission piece comprises a protruding block arranged at two shaft ends of the impeller, and the protruding block is connected with a rotating shaft of the impeller through a first spring.

As a preferable mode of the water level monitoring device of the present application, wherein: the transmission piece further comprises a rack which is arranged at the top of the spoiler and meshed with the gear.

As a preferable mode of the water level monitoring device of the present application, wherein: the transmission piece also comprises L-shaped rods arranged on the inner walls of the two sides of the shell, one end of each L-shaped rod is positioned on one side of each protruding block, and the end part of the other end of each L-shaped rod is wedge-shaped and matched with the end part of each rack.

The water level monitoring device has the beneficial effects that: the device is arranged through the main body part and the diversion component, so that the device can remotely check the river water level condition in real time and can also prevent the device from being damaged when the water flow is increased.

The second object of the application is to provide a method for increasing the power generation capacity of a hydropower station by utilizing wind energy, which can solve the problems of unstable output and intermittence caused by large-scale grid connection of wind and light.

In order to solve the technical problems, the application provides a method for increasing the generating capacity of a hydropower station by utilizing wind and light energy, which comprises the following steps: the method is characterized in that pumping condition parameters of a downstream water pump are set;

judging whether the downstream water level meets the condition parameters or not through a water level monitoring device;

judging whether the voltage of the photovoltaic panel or the wind driven generator is normal or not;

judging whether the inverter is normal or not;

if one of the conditions is not satisfied, the water pump does not execute the pumping command;

if the conditions are met at the same time, the water pump executes a water pumping command to supplement water to the upstream;

and when the downstream water level is lower than a set value, reducing the power of the water pump or switching off the water pump.

As a preferable scheme of the method for increasing the power generation capacity by utilizing wind and light energy in the hydropower station, the application comprises the following steps: the pumping condition parameters comprise the water level height and the water flow velocity of a downstream river, the normal voltage values of the photovoltaic panel and the wind driven generator and the parameter values of the inverter during normal operation.

The method has the beneficial effects that: according to the method, the downstream river water resources of the hydropower station are pumped back to the upstream reservoir area of the hydropower station to store energy, so that the generating capacity of the hydropower station can be effectively increased, and meanwhile, the damage of a distributed power supply to a power grid is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 is an overall construction diagram of a water level monitoring apparatus.

Fig. 2 is a front cross-sectional view of the water level monitoring device.

Fig. 3 is a side sectional view of the water level monitoring device.

Fig. 4 is a structural view of the sensing member of the water level monitoring apparatus.

Fig. 5 is a side view of the internal structure of the water level monitoring apparatus.

Fig. 6 is an enlarged view of the structure at a in fig. 5.

Fig. 7 is a plan view of an internal structure of the water level monitoring apparatus.

Fig. 8 is a structural view of a spoiler of the water level monitoring device.

Fig. 9 is a schematic flow direction of water flow in the spoiler of the water level monitoring device.

Fig. 10 is a schematic diagram of a method and a device for increasing the power generation capacity of a hydropower station by using wind and light energy.

FIG. 11 is a flow chart of a method for increasing power generation in a hydropower station by utilizing wind-light energy.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 3, for a first embodiment of the present application, there is provided a water level monitoring apparatus including a main body part 100 and a diversion assembly 200, and the remote real-time monitoring of the river water level is achieved through the main body part 100. The device is protected by the flow guide assembly 200, and the service life is prolonged.

Specifically, the main body part 100 includes a housing 101, and an inductor 102 is disposed inside the housing 101. The housing 101 may be suspended on the water surface by providing a support frame on the shore. The sensing member 102 is connected with a remote control center, and can check the water level in real time.

Preferably, the diversion assembly 200 includes a spoiler 201 disposed at one end of the housing 101, and a driving member 202 disposed at two sides of the sensing member 102. The turbulence member 201 can block and channel the water flow to a certain extent, and can protect the sensing member 102 inside the housing 101 to a certain extent. And the transmission member 202 may connect the sensing member 102 with the spoiler 201.

When the device is used, the device is hung on the water surface through the support erected on the shore, and the sensing piece 102 can monitor the water level condition in real time in the running process of the device. When the sensing member 102 detects that the water level is rising and the flow speed of the water flow is fast, the driving member 202 drives the turbulence member 201 to move, the turbulence member 201 can drain the water flow, and the impact of the water flow on the device is reduced.

Example 2

Referring to fig. 2 to 9, a second embodiment of the present application is based on the previous embodiment.

Specifically, one end of the casing 101 is tapered, long waist grooves 101a are formed in two side walls of the casing 101, the sensing piece 102 comprises an impeller 102a arranged in the casing 101, and two shaft ends of the impeller 102a are arranged in the long waist grooves 101 a. The tapered end of the housing 101 faces the direction of the water flow for splitting the water flow to slow down the impact of the water flow on the device. The tapered end is slotted on both sides for mounting the spoiler 201a. When the water flow hits the impeller 102a, the impeller 102a rotates.

Preferably, the sensing piece 102 further comprises a connecting sleeve rod 102b arranged at two ends of the rotating shaft of the impeller 102a, the connecting sleeve rod 102b is connected with the rotating shaft bearing of the impeller 102a, a floating plate 102c and a reflecting plate 102d are respectively arranged at the bottom end and the top end of the connecting sleeve rod 102b, and a distance sensor 102e is arranged on the inner wall of the shell 101 right above the reflecting plate 102 d. The floating plate 102c has buoyancy, and its bottom surface is higher than the lowest part of the impeller 102a, so that when the water level rises, the impeller 102a is always partially immersed in water. The distance sensor 102e is an infrared distance sensor for measuring the distance between the reflecting plate 102d and the inner wall above the housing 101, and the remote control center monitors the change of the water level according to the change of the distance.

Preferably, the spoiler 201 comprises at least one spoiler 201a arranged on two sides of the conical end of the shell 101, the spoiler 201a is in rotating fit with the side wall of the shell 101, and a gear 201b is further arranged at the top shaft end of the spoiler 201a. The spoiler 201a is obliquely arranged in parallel along two sides of the conical end of the casing 101, and an included angle between the spoiler 201a and the axis of the impeller 102a is an acute angle in the conventional case, so that the spoiler 201a can also play a role in blocking garbage on the water surface to a certain extent, and prevent the garbage from entering the device. The spoiler 201a cuts the water flow and slows down the impact on the device.

Preferably, an inner flow path 201a-1 is further provided in the spoiler 201a, one end of the inner flow path 201a-1 is communicated with the long side of the spoiler 201a, the other end is communicated with the long side thereof, and a plurality of outlets of the inner flow path 201a-1 are provided. In some cases, some floats may be stuck on the spoiler 201a, and the inner flow path 201a-1 is configured such that the water flows from the front to the side, so that the floats stuck on the side walls of the spoiler 201a can be washed away and run away with the large water flow on both sides of the housing 101.

Preferably, the transmission member 202 includes a protrusion 202a disposed at two axial ends of the impeller 102a, and the protrusion 202a is connected to the rotation shaft of the impeller 102a through a first spring 202 b. The first spring 202b is a tension spring, and when the impeller 102a rotates, the projection 202a rotates. Normally, the tab 202a is not in contact with the "L" shaped bar 202 d.

Preferably, the transmission member 202 further includes a rack 202c disposed on the top of the spoiler 201a and engaged with the gear 201b. When the rack 202c moves horizontally, all the spoilers 201a are rotated, thereby changing the angle.

Further, the transmission member 202 further includes an "L" shaped rod 202d disposed on two inner walls of the housing 101, one end of the "L" shaped rod 202d is located at one side of the bump 202a, and the other end is wedge-shaped and is matched with the end of the rack 202c. The "L" shaped rod 202d is slidable along the inner wall of the housing 101. When the "L" shaped bar 202d moves toward the tapered end of the housing 101, the wedge shaped end above the "L" shaped bar 202d presses the rack 202c to move horizontally.

When the device is used, the device is hung on the water surface through the support erected on the shore, the floating plate 102c has buoyancy, when the water level rises, the floating plate 102c moves upwards together with the impeller 102a and the reflecting plate 102d at the top of the impeller, the distance between the reflecting plate 102d and the inner wall of the shell 101 changes, and the distance sensor 102e transmits data to a remote control center.

In addition, the rising of the water level of the river is accompanied by the increase of the water flow velocity, at this time, the impeller 102a will rotate faster, and when the rotation velocity reaches a certain degree, the rotation radius of the bump 202a will become larger under the action of the centrifugal force, and the bump 202a will impact and squeeze the L-shaped rod 202d to drive the rack 202c to move, and the rack 202c will rotate the spoiler 201a again, so that the axis of the spoiler 201a is perpendicular to the axis of the impeller 102a, and thus the opening between the spoilers 201a will face the water flow, and the water flow will flow smoothly through the device, thereby reducing the impact of the high-speed water flow to the device. When the water flow slows down, the spoiler 201a will return to the inclined shape again, preventing the floating objects from entering the device to some extent. In order to smoothly restore the spoiler 201a, a torsion spring may be mounted on the rotating shaft of the spoiler 201a, or a corresponding spring may be mounted on the end of the rack 202c for restoring.

Example 3

Referring to fig. 10 and 11, in a third embodiment of the present application, the embodiment provides a method for increasing the power generation capacity of a hydropower station by using wind and light energy, when the water pump 600 pumps water, it needs to determine whether the corresponding conditions meet the requirements, otherwise, the water pump can not be started, which specifically includes the steps of:

s0: the parameters of the pumping condition of the water pump 600 are set to be the water level height of the downstream river, the water flow rate, the normal voltage values of the photovoltaic panel 601 and the wind driven generator 602, and the parameter values when the inverter 603 works normally. The specific parameters are formulated according to the local energy conditions.

S1: judging whether the downstream water level meets the condition parameters through the water level monitoring device, entering S2 after meeting the condition, and otherwise, not executing the pumping instruction;

s2: judging whether the voltage of the photovoltaic panel 601 or the wind driven generator 602 (only one voltage is required to be normal for the photovoltaic panel 601 or the wind driven generator 602) is normal, if so, the voltage normally enters S3, otherwise, the pumping instruction is not executed;

s3: judging whether the photovoltaic inverter 603 or the fan inverter 603 (only one photovoltaic inverter or fan inverter needs to work normally to meet the pumping condition) has a fault, normally entering S4, otherwise, not executing pumping instructions;

s4: after all conditions are met, the water pump 600 is started to supplement water to the upstream reservoir area for energy storage;

s5: after the water pump is started, monitoring whether the water level and the flow of the downstream river channel meet a set value, if so, continuing to pump water normally, and if so, entering S6;

s6: the running power of the water pump is reduced, and the water pumping quantity is reduced;

s7: by adjusting the running power of the water pump, the water level and the flow of the downstream river channel are maintained to meet the requirements.

The current output by the photovoltaic panels 601 is direct current, the output voltage of each photovoltaic panel 601 is higher, the current is smaller, the electric energy generated by different photovoltaic panels 601 needs to be collected by a collecting box 601a, the direct current generated by the photovoltaic is inverted into alternating current of 50Hz by an inverter 603, and the alternating current is boosted by a boosting transformer 700 and then sent to a water pump 600. Similarly, because the current output by the wind driven generator 602 is direct current, the voltage is lower, the current needs to be inverted into alternating current of 50Hz through the inverter 603, and then the alternating current is boosted through the booster transformer 700 and then sent to the water pump 600, so that scattered photovoltaic and wind power generation electric energy is converted into potential energy of water to be stored, the generating capacity of the hydropower station can be effectively increased, and meanwhile, the stability of an electric power system is improved.

It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.

Claims

1. A water level monitoring device, characterized in that: comprising the steps of (a) a step of,

a main body part (100) comprising a housing (101), wherein an induction element (102) is arranged inside the housing (101); the method comprises the steps of,

the flow guiding assembly (200) comprises a flow disturbing piece (201) arranged at one end of the shell (101) and transmission pieces (202) arranged at two sides of the sensing piece (102).

2. The water level monitoring device of claim 1, wherein: one end of the shell (101) is conical, long waist grooves (101 a) are formed in two side walls of the shell (101), the induction piece (102) comprises an impeller (102 a) arranged inside the shell (101), and two shaft ends of the impeller (102 a) are arranged in the long waist grooves (101 a).

3. The water level monitoring device of claim 2, wherein: the induction piece (102) further comprises connecting sleeve rods (102 b) arranged at two ends of the rotating shaft of the impeller (102 a), the connecting sleeve rods (102 b) are connected with the rotating shaft bearings of the impeller (102 a), floating plates (102 c) and reflecting plates (102 d) are respectively arranged at the bottom end and the top end of the connecting sleeve rods (102 b), and distance sensors (102 e) are arranged on the inner wall of the shell (101) right above the reflecting plates (102 d).

4. A water level monitoring device as claimed in claim 2 or 3, wherein: the spoiler (201) comprises at least one spoiler (201 a) arranged on two sides of the conical end of the shell (101), the spoiler (201 a) is in running fit with the side wall of the shell (101), and a gear (201 b) is further arranged at the shaft end of the top of the spoiler (201 a).

5. The water level monitoring device of claim 4, wherein: an inner runner (201 a-1) is further arranged in the spoiler (201 a), one end of the inner runner (201 a-1) is communicated with the long side of the spoiler (201 a), the other end of the inner runner is communicated with the long side of the spoiler, and a plurality of outlets of the inner runner (201 a-1) are arranged.

6. The water level monitoring device of claim 5, wherein: the transmission piece (202) comprises a protruding block (202 a) arranged at two shaft ends of the impeller (102 a), and the protruding block (202 a) is connected with a rotating shaft of the impeller (102 a) through a first spring (202 b).

7. The water level monitoring device of claim 6, wherein: the transmission piece (202) further comprises a rack (202 c) which is arranged at the top of the spoiler (201 a) and meshed with the gear (201 b).

8. The water level monitoring device of claim 7, wherein: the transmission part (202) further comprises L-shaped rods (202 d) arranged on the inner walls of the two sides of the shell (101), one end of each L-shaped rod (202 d) is located at one side of each protruding block (202 a), and the end of the other end of each L-shaped rod is wedge-shaped and matched with the end of each rack (202 c).

9. A method for increasing generating capacity of a hydropower station by utilizing wind and light energy is characterized by comprising the following steps of:

setting pumping condition parameters of a downstream water pump (600);

judging whether the downstream water level meets the condition parameters by using the water level monitoring device according to any one of claims 1 to 8;

judging whether the voltage of the photovoltaic panel (601) or the wind driven generator (602) is normal;

judging whether the inverter (603) is normal;

if one of the conditions is not satisfied, the water pump (600) does not execute the pumping command;

if the conditions are met at the same time, the water pump (600) executes a water pumping command to supplement water to the upstream;

when the downstream water level is lower than a set value, the power of the water pump (600) is reduced or the water pump (600) is turned off.

10. The method for increasing power generation by utilizing wind and solar energy in a hydropower station according to claim 9, wherein: the pumping condition parameters comprise the water level height and the water flow velocity of a downstream river, the normal voltage values of the photovoltaic panel (601) and the wind driven generator (602) and the parameter values of the inverter (603) during normal operation.