CN103983323B - Hydropower station water level measuring method and hydropower station water level monitoring system - Google Patents
Hydropower station water level measuring method and hydropower station water level monitoring system Download PDFInfo
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- CN103983323B CN103983323B CN201410249858.1A CN201410249858A CN103983323B CN 103983323 B CN103983323 B CN 103983323B CN 201410249858 A CN201410249858 A CN 201410249858A CN 103983323 B CN103983323 B CN 103983323B
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Abstract
The invention provides a kind of hydropower station water level measuring method, measure the water level in power station simultaneously using two hydrostatic sensors, data limit filtration first is surveyed to two hydrostatic sensors, then digital low-pass filtering, pass through the deviation ratio of filtered data unit of account depth twice, the water level in power station, and collateral security measurement accuracy are finally calculated according to deviation ratio.Present invention also offers a kind of hydropower station water level monitoring system.When the water level value deviation that two hydrostatic sensors measure is larger, illustrate one of hydrostatic sensor measurement accuracy deficiency, it is necessary to be adjusted or change.Avoid because only that because much time using causes ageing equipment during a hydrostatic sensor, measurement result is gradually reduced, it is difficult to the problem of finding.
Description
Technical field
The present invention relates to level measuring field, is supervised more particularly to a kind of hydropower station water level measuring method and hydropower station water level
Examining system.
Background technology
Energy possessed by Unit Weight water body between power station upstream diversion admission section and downstream tailrace outlet section
Difference is measured, is often measured in meters.Typically represented with the water level difference of section at two, referred to as power station gross head.This is power station
Adjust an important parameter of hydraulic turbine operation.In hydraulic engineering, level measuring always is reservoir emphasis of interest,
Run under the anomalous weather situation such as flood, typhoon, carry out early warning if none of reliable and stable water level monitoring system, this is very
Easily lead to major disaster, huge loss is brought to the country and people's lives and properties.Fluid pressure type water-level gauge is that one kind passes through survey
The hydraulic pressure of measurement point, water level depth is gone out by hydraulic pressure calculation formula inverse.Its calculation formula is the depth of water=hydraulic pressure/(gravity adds
Speed * water densities), wherein hydraulic pressure does not include atmospheric pressure.
Power station has much for the method for the measurement of water level at present, but the precision of most sensors itself changes
Seldom accounted for etc. reason, this causes the lengthening of the run time with equipment, and its measurement accuracy, stability and accuracy are all
It will decrease.This is for being a problem for the power station that requires high-precision water level.The processing that current head calculates
Algorithm often only has simple filtering process, the change of weather is produced serious interference to measurement data.
The content of the invention
Based on this, it is necessary to cause ageing equipment, measurement accuracy due to long-term use for the hydrostatic sensor in power station
Slowly reduce the problem of causing measurement accuracy not accurate enough but being difficult to be found, there is provided one kind can effective improving measurement accuracy,
The hydropower station water level measuring method and power station water of the hydropower station water level value of degree of precision can be also obtained even in atrocious weather
Level monitoring system.
The present invention is achieved through the following technical solutions：
A kind of hydropower station water level measuring method, for monitoring the water level in power station, comprises the steps：
The real-time deep information of different depth under the liquid level of power station is gathered by two hydrostatic sensors A1 and A2；
According to position residing for the calculating of real-time deep information two the hydrostatic sensors A1 and A2 that two hydrostatic sensors collect
Real-time deep the value M1 and M2 put；
Digital filtering processing is carried out to real-time deep value M1 and M2, respectively obtains real-time deep the value B1, B2 of degree of precision；
Calculate the measured deviation rate D of the unit depth of two hydrostatic sensors；
High-precision Real-time Water place value E, E=B2 × D+H2 are calculated, wherein H2 is the peace for the hydrostatic sensor for measuring M2 values
Fill elevation.
In above-mentioned hydropower station water level measuring method, the measured deviation rate of the unit depth for calculating two hydrostatic sensors
D, the ratio of the difference of difference and B1 and B2 for two hydrostatic sensors A1 and A2 Installation Elevation.
The water level depth in power station, the data collected according to two hydrostatic sensors are measured by two hydrostatic sensors
The measured deviation rate of unit of account depth first, high-precision power station water is then calculated according to the measured deviation rate of unit depth
Place value, so as to reduce the error of measurement, make the data of measurement more accurate.
It is described that digital filtering processing is carried out to real-time deep value M1 and M2 in above-mentioned hydropower station water level measuring method, specifically
Comprise the steps：
Limit filtration and digital low-pass filtering are carried out successively to real-time deep value M1 and M2.Measurement data is set to tend towards stability,
Strengthen antijamming capability, reduce measurement error.
In above-mentioned hydropower station water level measuring method, the real-time deep information meter collected according to two hydrostatic sensors
Real-time deep the value M1 and M2 of two hydrostatic sensor present positions are calculated, is comprised the steps：
According to formula：P=ρ gh；Real-time deep the value M1 and M2 of two hydrostatic sensor A1 and A2 present positions are calculated, its
In：
P is the difference of two hydrostatic sensor A1 or A2 present position hydraulic pressure and atmospheric pressure, and ρ is the density of water, and g is gravity
Acceleration, h are real-time deep values.
In above-mentioned hydropower station water level measuring method, two hydrostatic sensors A1, A2 output current and real-time deep value M1,
M2 meets following relational expressions, C=4+M × 16；
Wherein, C represents the output current of two hydrostatic sensors, and M represents the real-time deep that two hydrostatic sensors are surveyed
Value, 4 and 16 be the value fitted by hydrostatic sensor output current scope.Output current scope is 4 to 20 milliamperes of hydraulic pressure
Sensor is applied to the formula.
Present invention also offers a kind of hydropower station water level monitoring system：
A kind of hydropower station water level monitoring system, for monitoring the water level in power station, including the first hydrostatic sensor and second
Hydrostatic sensor, middle control unit, data processor, monitoring system and display system；
First hydrostatic sensor and the second hydrostatic sensor electrically connect with middle control unit, middle control unit and data processor electricity
Connection, data processor electrically connect with monitoring system and display system；
The real-time deep information transmission that first hydrostatic sensor and the second hydrostatic sensor will be collected by middle control unit
To data processor, data processor handles the first liquid according to the hydropower station water level measuring method described in claim to any one
Pressure sensor and the real-time deep information of the second hydrostatic sensor transmission, calculate high-precision Real-time Water place value.
In above-mentioned hydropower station water level monitoring system, in addition to drop disturbs sleeve, and drop disturbs the tubular structure that sleeve is both ends open,
The side wall that drop disturbs sleeve is provided with breach, and the first hydrostatic sensor and the second hydrostatic sensor are set in two drops and disturb sleeve
It is interior.
In above-mentioned hydropower station water level monitoring system, it is pvc pipe that drop, which disturbs sleeve, and its upper end is provided with and covers cap, covers cap and is fixed on drop
Disturb on sleeve, cover the upper end open that cap covering drop disturbs sleeve.
In above-mentioned hydropower station water level monitoring system, the middle control unit includes Data collecting conversion instrument, liquid level display meter head
With ac-dc switching power device；Data collecting conversion instrument and the first hydrostatic sensor, the second hydrostatic sensor and data processing
Device electrically connects, and liquid level display meter head electrically connects with Data collecting conversion instrument, ac-dc switching power device and Data collecting conversion
Instrument and the electrical connection of liquid level display meter head.
In above-mentioned hydropower station water level monitoring system, the Data collecting conversion instrument includes data collecting card, dc source connects
Mouth and chromacoder.
First hydrostatic sensor is electrically connected with data collecting card and dc power interface, and the second hydrostatic sensor is adopted with data
Truck and dc power interface electrical connection, data collecting card are electrically connected by chromacoder with data processor.
Compared with prior art, hydropower station water level measuring method of the invention measures water simultaneously using two hydrostatic sensors
The water level in power station, data limit filtration first is surveyed to two hydrostatic sensors, then digital low-pass filtering, using filtering twice
The deviation ratio of data unit of account depth afterwards, the water level in power station is finally calculated according to the deviation ratio of unit depth, and from guarantor
Demonstrate,prove measurement accuracy.When the water level value deviation that two hydrostatic sensors measure is larger, illustrate one of hydrostatic sensor measurement
Precision deficiency is, it is necessary to be adjusted or change.Avoid because only that due to much time using during a hydrostatic sensor
Ageing equipment, measurement result is set gradually to reduce, it is difficult to the problem of finding.
Brief description of the drawings
Fig. 1 is a kind of flow chart of embodiment of hydropower station water level measuring method；
Fig. 2 is the connection relationship diagram of hydropower station water level monitoring system first embodiment；
Fig. 3 is the annexation refinement figure of middle control unit；
Fig. 4 is the annexation refinement figure of Data collecting conversion instrument；
Fig. 5 is the structural representation that drop disturbs sleeve first embodiment.
Reference：Unit, 4- data processors, 5- are controlled in the hydrostatic sensors of 1- first, the hydrostatic sensors of 2- second, 3-
Monitoring system, 6- display systems, 7- Data collecting conversions instrument, 8- liquid level display meters head, 9- ac-dc switching powers device, 10-
Dc power interface, 11- data collecting cards, 12- chromacoders, 13- drops disturb sleeve, 14- breach, 15- and cover cap.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and combine attached
Figure, the hydropower station water level measuring method and monitoring system of the present invention are further elaborated.It should be appreciated that this place is retouched
The specific embodiment stated only to explain the present invention, is not used to limit invention.
Embodiment 1：As shown in figure 1, a kind of hydropower station water level measuring method, for monitoring the water level in power station, by two
Hydrostatic sensor is placed on different depth under the liquid level of power station, and the position current and wave that two hydrostatic sensors are set as far as possible will
It is small, to reduce influence of the external environment to two hydrostatic sensors as far as possible.Water power is gathered by two hydrostatic sensors A1 and A2
Stand the real-time deep information of different depth under liquid level.Preferably, two 1.5 meters of hydrostatic sensor intervals, it also can use and other be more than 1
Rice is less than 2 meters of value, but real distance must measure accurately, and two hydrostatic sensors can be connected to by plastics runner
Together, prevent from flying away under the impact of wave.
According to position residing for the calculating of real-time deep information two the hydrostatic sensors A1 and A2 that two hydrostatic sensors collect
Real-time deep the value M1 and M2 put；M1 and M2 value can be calculated according to formula P=ρ gh, wherein P represents hydraulic pressure and (removes air
After pressure), ρ represents the density of water, and g is acceleration of gravity, the depth of h representative pressure sensors present position water.
Digital filtering processing is carried out to obtained real-time deep value M1 and M2, respectively obtains the real-time deep value of degree of precision
B1,B2；
Calculate the measured deviation rate D of the unit depth of two hydrostatic sensors；
High-precision Real-time Water place value E, E=B2 × D+H2 are calculated, wherein H2 is that the installation for the sensor for measuring M2 values is high
Journey.
The measured deviation rate D of the unit depth for calculating two hydrostatic sensors, is two hydrostatic sensors A1 and A2
Installation Elevation difference and B1 and B2 difference ratio.
In above-mentioned hydropower station water level measuring method, the real-time deep information meter collected according to two hydrostatic sensors
Real-time deep the value M1 and M2 for calculating two hydrostatic sensor present positions also comprise the steps：
According to formula：P=ρ gh；Real-time deep the value M1 and M2 of two hydrostatic sensor A1 and A2 present positions are calculated, its
In：
P is the difference of two hydrostatic sensor A1 or A2 present position hydraulic pressure and atmospheric pressure, and ρ is the density of water, and g is gravity
Acceleration, h are real-time deep values.
In above-mentioned hydropower station water level measuring method, two hydrostatic sensors A1, A2 output current and real-time deep value M1,
M2 meets following relational expressions, C=4+M × 16；
Wherein, C represents the output current of two hydrostatic sensors, and M represents the real-time deep that two hydrostatic sensors are surveyed
It is worth, in above-mentioned relation formula, 4 and 16 be the value fitted by hydrostatic sensor output current scope.
Embodiment 2：As shown in figure 1, a kind of hydropower station water level measuring method, for monitoring the water level in power station, by two
Hydrostatic sensor is placed on different depth under the liquid level of power station, and the position current and wave that two hydrostatic sensors are set as far as possible will
It is small, to reduce influence of the external environment to two hydrostatic sensors as far as possible.Water power is gathered by two hydrostatic sensors A1 and A2
Stand the real-time deep information of different depth under liquid level.Preferably, two 1.5 meters of hydrostatic sensor intervals, it also can use and other be more than 1
Rice is less than 2 meters of value, but real distance must measure accurately, and two hydrostatic sensors can be connected to by plastics runner
Together, prevent from flying away under the impact of wave.
According to position residing for the calculating of real-time deep information two the hydrostatic sensors A1 and A2 that two hydrostatic sensors collect
Real-time deep the value M1 and M2 put；M1 and M2 value can be calculated according to formula P=ρ gh, wherein P represents hydraulic pressure and (removes air
After pressure), ρ represents the density of water, and g is acceleration of gravity, the depth of h representative pressure sensors present position water.
Digital filtering processing is carried out to obtained real-time deep value M1 and M2, respectively obtains the real-time deep value of degree of precision
B1,B2；
Calculate the measured deviation rate D of the unit depth of two hydrostatic sensors；
High-precision Real-time Water place value E, E=B2 × D+H2 are calculated, wherein H2 is that the installation for the sensor for measuring M2 values is high
Journey.
This hydropower station water level measuring method measures the water level in power station, above-mentioned digital filtering bag using two hydrostatic sensors
The limit filtration and digital low-pass filtering carried out successively is included, largely weakens water wave, current, instrument positioned at medium-high frequency section
The main interference such as device vibration, meanwhile, two sensors are close, and it is close that both are affected by temperature Gu, passes through the calculating of deviation ratio
Can effectively solve the influence of temperature, silt content, acceleration of gravity to measurement result, be corrected by unit deviation rate, make survey
It is more accurate to measure data.
In above-mentioned hydropower station water level measuring method, the real-time deep information meter collected according to two hydrostatic sensors
Real-time deep the value M1 and M2 for calculating two hydrostatic sensor present positions also comprise the steps：
According to formula：P=ρ gh；Real-time deep the value M1 and M2 of two hydrostatic sensor A1 and A2 present positions are calculated, its
In：
P is the difference of two hydrostatic sensor A1 or A2 present position hydraulic pressure and atmospheric pressure, and ρ is the density of water, and g is gravity
Acceleration, h are real-time deep values.
In above-mentioned hydropower station water level measuring method, two hydrostatic sensors A1, A2 output current and real-time deep value M1,
M2 meets following relational expressions, C=4+M × 16；
Wherein, C represents the output current of two hydrostatic sensors, and M represents the real-time deep that two hydrostatic sensors are surveyed
Value.
In above-mentioned hydropower station water level measuring method, the processing of described digital filtering, following step is specifically included：
Limit filtration is carried out respectively to real-time deep value M1, M2 first, digital low-pass filtering is carried out to it respectively afterwards.When
Two hydrostatic sensors nearby have larger wave, or the aerial falling objects above two hydrostatic sensors, all can shadow
The measurement accuracy of hydrostatic sensor is rung, it is surveyed the mutation of data short time, is handled by limit filtration, eliminate unusual waveforms,
Make surveyed data smooth transition.Main interference comes from wave and current in level measuring, they the characteristics of be interference band master
Medium-high frequency section is concentrated on, it is weakened by the method for LPF, makes data more smooth change.
As shown in Fig. 2 the invention also discloses a kind of hydropower station water level monitoring system, for monitoring the water level in power station,
Including the first hydrostatic sensor 1 and the second hydrostatic sensor 2, middle control unit 3, data processor 4, monitoring system 5 and display system
System 6；
First hydrostatic sensor 1 and the second hydrostatic sensor 2 electrically connect with middle control unit 3, middle control unit 3 and data processing
Device 4 electrically connects, and data processor 4 electrically connects with monitoring system 5 and display system 6；
First hydrostatic sensor 1 and the second hydrostatic sensor 2 are passed the real-time deep information collected by middle control unit 3
Pass data processor 4, data processor 4 is according to the hydropower station water level measuring method processing described in claim to any one the
The real-time deep information that one hydrostatic sensor 1 and the second hydrostatic sensor 2 transmit, calculates high-precision Real-time Water place value.
As shown in figure 5, in above-mentioned hydropower station water level monitoring system, in addition to drop disturbs sleeve 13, it is both ends that drop, which disturbs sleeve 13,
The tubular structure of opening, the side wall that drop disturbs sleeve 13 are provided with breach 14, and the first hydrostatic sensor 1 and the second hydrostatic sensor 2 divide
Two drops are not sleeved on to disturb in sleeve 13.
In above-mentioned hydropower station water level monitoring system, it is pvc pipe that drop, which disturbs sleeve 13, and its upper end is provided with and covers cap 15, and it is solid to cover cap 15
It is scheduled on drop to disturb on sleeve 13, covers the upper end open that the covering drop of cap 15 disturbs sleeve 13.
As shown in figure 3, in above-mentioned hydropower station water level monitoring system, the middle control unit 3 include Data collecting conversion instrument 7,
Liquid level display meter first 8 and ac-dc switching power device 9；The hydrostatic sensor 1 of Data collecting conversion instrument 7 and first, the second hydraulic pressure
Sensor 2 and data processor 4 electrically connect, and liquid level display meter first 8 electrically connects with Data collecting conversion instrument 7, AC-DC conversion electricity
Source device electrically connects with Data collecting conversion instrument 7 and liquid level display meter first 8.
As shown in figure 4, in above-mentioned hydropower station water level monitoring system, the Data collecting conversion instrument 7 includes data collecting card
11st, dc power interface 10 and chromacoder 12.
First hydrostatic sensor 1 electrically connects with data collecting card 11 and dc power interface 10, the second hydrostatic sensor 2 with
Data collecting card 11 and dc power interface 10 electrically connect, and data collecting card 11 passes through chromacoder 12 and data processor
4 electrical connections.
Operation principle：First hydrostatic sensor 1 and the second hydrostatic sensor 2 are arranged on the water surface of power station different depth
Under, the real-time deep information of its present position is gathered in real time, and the real-time deep information transmission collected is controlled into unit 3 to middle,
The real-time deep information received from the first hydrostatic sensor 1 and the second hydrostatic sensor 2 is converted at data by middle control unit 3
Reason device 4 passes to data processor 4 after can recognize that form, and data processor 4 calculates according to above-mentioned hydropower station water level measuring method
Go out the high-precision water level value of two hydrostatic sensor present positions, then control display system 6 to show high-accuracy water place value.Make
For one of which embodiment, the first hydrostatic sensor 1 and the second hydrostatic sensor 2 are arranged on to the trash rack in power station
Below, the first hydrostatic sensor 1 and 2 used plastics runner of the second hydrostatic sensor are fixed on the distance at a distance of 1.5 to 2 meters, block
Current are smaller after dirty grid, and current are also smaller on being influenceed caused by the first hydrostatic sensor 1 and the second hydrostatic sensor 2, make water power
The level measuring information stood is more accurate.
When display system 6 shows that the water level value difference that the first hydrostatic sensor 1 and the second hydrostatic sensor 2 measure is larger
When, illustrate that one of hydrostatic sensor breaks down, it is necessary to repair or change.Because hydrostatic sensor can be because of ageing equipment
Accuracy is caused to gradually reduce, ageing equipment is a slow process, would become hard to send out if being provided only with a hydrostatic sensor
The skew of its existing precision, but use two hydrostatic sensors to measure water level with regard to this problem can be reflected simultaneously, because different
The speed of ageing equipment differ, when two hydrostatic sensors survey data difference it is larger when, illustrate one of survey
Accuracy of measurement is not much of that, it may be possible to because ageing equipment either breaks down and needs repairing or change.
When drop being disturbed into sleeve 13 being placed in water, the water surface is stretched out in the upper end that drop disturbs sleeve 13, and water surface distance water is stretched into lower end
More than half meter of bottom, the drop provided with breach 14 is disturbed direction of the side backwards to current of sleeve 13, and two drops disturb sleeve 13 and are respectively
First hydrostatic sensor 1 and the second hydrostatic sensor 2 provide is connected but can buffer the measurement that wave influences on it with the external world
Environment, the first hydrostatic sensor 1 and the measurement data of the second hydrostatic sensor 2 is set not to be influenceed by ambient weather.It is anti-to cover cap 15
Measurement of the rainwater to hydrostatic sensor has an impact when only raining.
Dc power interface 10 is that the first hydrostatic sensor 1, the second hydrostatic sensor 2 and data collecting card 11 provide work
Power supply, data collecting card 11 receive the real-time deep information of the first hydrostatic sensor 1 and the collection of the second hydrostatic sensor 2, data
For capture card 11 by the data transfer being collected into chromacoder 12, the data that data collecting card 11 collects are electric signals,
Data collecting card 11 converts the electrical signal to RS485 signals and is then forwarded to chromacoder 12, and chromacoder 12 will
The RS485 signals received are converted into the readable format of data processor 4, and data processor 4 calculates high-precision power station water
Position information simultaneously passes to monitoring system 5 and display system 6, and display system 6 shows high-precision hydropower station water level information, monitoring system
System 5 by high-precision hydropower station water level information compared with default warning line, when the high-precision water level information in power station is more than
Data processor 4 shows alarm signal by display system 6 during default warning line.Data processor 4 can run NET4,
ACCESS databases, eDNA databases (no this item can be run in offline mode) and WINDOW XP SP3 and system above.From
And strengthen the applicability of equipment.
The present invention hydropower station water level monitoring system solve because level measuring inaccuracy cause unit operation poor efficiency,
Unstable, unsafe problems, while alleviate conventional water level gauge and can not accumulate over time caused by self checking and caused
The problem of precision and stability big drop, the decision-making foundation of science is provided for the more efficient running in power station, so as to greatly improve
Efficiency.
Claims (4)
- A kind of 1. hydropower station water level measuring method, for monitoring the water level in power station, it is characterised in that comprise the steps：The real-time deep information of different depth under the liquid level of power station is gathered by two hydrostatic sensors A1 and A2；The two hydrostatic sensor A1 and A2 present positions of real-time deep information calculating collected according to two hydrostatic sensors Real-time deep value M1 and M2；Digital filtering processing is carried out to real-time deep value M1 and M2, respectively obtains real-time deep the value B1, B2 of degree of precision；Calculate the measured deviation rate D of the unit depth of two hydrostatic sensors；High-precision Real-time Water place value E, E=B2 × D+H2 are calculated, wherein H2 is that the installation for the hydrostatic sensor for measuring M2 values is high Journey；It is described that digital filtering processing is carried out to real-time deep value M1 and M2, specifically include following step：Limit filtration and digital low-pass filtering are carried out successively to real-time deep value M1 and M2；Described two hydrostatic sensor A1 and A2 Depth interval is 1.5 meters, and two hydrostatic sensors are linked together by plastics runner；Described two hydrostatic sensors cover respectively Disturbed mounted in two drops in sleeve, drop disturbs the tubular structure that sleeve is both ends open, and the side wall that drop disturbs sleeve is provided with breach, and drop disturbs set Cylinder upper end, which is provided with, covers cap；The measured deviation rate D of the unit depth of described two hydrostatic sensors, be two hydrostatic sensor A1 and The ratio of the difference and B1 of A2 Installation Elevation and B2 difference；The real-time deep information collected according to two hydrostatic sensors Real-time deep the value M1 and M2 of two hydrostatic sensor present positions are calculated, is comprised the steps；According to formula：P=ρ gh；Real-time deep the value M1 and M2 of two hydrostatic sensor A1 and A2 present positions are calculated, wherein：P is the difference of two hydrostatic sensor A1 or A2 present position hydraulic pressure and atmospheric pressure, and ρ is the density of water, and g is that gravity accelerates Degree, h is real-time deep value；Described two hydrostatic sensor A1, A2 output current and real-time deep value M1, M2 meet following passes It is formula, C=4+M × 16；Wherein, C represents the output current of two hydrostatic sensors, and M represents what two hydrostatic sensors were surveyed Real-time deep value, 4 and 16 be the value fitted by hydrostatic sensor output current scope.
- 2. a kind of hydropower station water level monitoring system, for monitoring the water level in power station, it is characterised in that including the first hydraulic sensing Device (1) and the second hydrostatic sensor (2), middle control unit (3), data processor (4), monitoring system (5) and display system (6)；First hydrostatic sensor (1) and the second hydrostatic sensor (2) electrically connect with middle control unit (3), middle control unit (3) and data Processor (4) electrically connects, and data processor (4) electrically connects with monitoring system (5) and display system (6)；The real-time deep information that first hydrostatic sensor (1) and the second hydrostatic sensor (2) will be collected by middle control unit (3) Pass to data processor (4), data processor (4) is according to the hydropower station water level measuring method processing described in claim 1 the The real-time deep information that one hydrostatic sensor (1) and the second hydrostatic sensor (2) transmit, calculates high-precision real time water level Value；The depth interval of first hydrostatic sensor (1) and the second hydrostatic sensor (2) is 1.5 meters, the first hydrostatic sensor (1) linked together with the second hydrostatic sensor (2) by plastics runner；Sleeve (13) also is disturbed including drop, drop disturbs sleeve (13) For the tubular structure of both ends open, the side wall that drop disturbs sleeve (13) is provided with breach (14), the first hydrostatic sensor (1) and the second liquid Pressure sensor (2) is set in two drops and disturbed in sleeve (13)；It is pvc pipe that drop, which disturbs sleeve (13), and its upper end is provided with and covers cap (15), cover cap (15) and be fixed on drop and disturb on sleeve (13), cover the upper end open that cap (15) covering drop disturbs sleeve (13).
- 3. hydropower station water level monitoring system according to claim 2, it is characterised in that the middle control unit (3) includes number According to collection conversion device (7), liquid level display meter head (8) and ac-dc switching power device (9)；Data collecting conversion instrument (7) and the One hydrostatic sensor (1), the second hydrostatic sensor (2) and data processor (4) electrical connection, liquid level display meter head (8) and data Gather conversion device (7) electrical connection, ac-dc switching power device (9) and Data collecting conversion instrument (7) and liquid level display meter head (8) Electrical connection.
- 4. hydropower station water level monitoring system according to claim 3, it is characterised in that the Data collecting conversion instrument (7) Including data collecting card (11), dc power interface (10) and chromacoder (12)；First hydrostatic sensor (1) and data Capture card (11) and dc power interface (10) electrical connection, the second hydrostatic sensor (2) and data collecting card (11) and direct current Source interface (10) is electrically connected, and data collecting card (11) is electrically connected by chromacoder (12) with data processor (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249858.1A CN103983323B (en) | 2014-06-06 | 2014-06-06 | Hydropower station water level measuring method and hydropower station water level monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410249858.1A CN103983323B (en) | 2014-06-06 | 2014-06-06 | Hydropower station water level measuring method and hydropower station water level monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103983323A CN103983323A (en) | 2014-08-13 |
| CN103983323B true CN103983323B (en) | 2017-12-22 |
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| CN104458307B (en) * | 2014-12-05 | 2017-03-15 | 国家电网公司 | A kind of power canal development hydraulic turbine energy response tests method for controlling water level |
| CN104634414A (en) * | 2015-01-28 | 2015-05-20 | 国家电网公司 | Water level measurement method based on Butterworth digital low-pass filter |
| CN108731768B (en) * | 2018-03-08 | 2020-01-14 | 哈尔滨工业大学 | Method for correcting data of liquid level sensor in airplane longitudinal gravity center adjusting system |
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