CN113048006B - Method and device suitable for filling water and horizontal pressure to quick door of underground power station unit - Google Patents
Method and device suitable for filling water and horizontal pressure to quick door of underground power station unit Download PDFInfo
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- CN113048006B CN113048006B CN202110335239.4A CN202110335239A CN113048006B CN 113048006 B CN113048006 B CN 113048006B CN 202110335239 A CN202110335239 A CN 202110335239A CN 113048006 B CN113048006 B CN 113048006B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
- F03B15/04—Controlling by varying liquid flow of turbines
- F03B15/06—Regulating, i.e. acting automatically
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention discloses a method and a device suitable for filling water level pressure to a quick door of an underground power station unit, wherein the method comprises ten steps, solves the problem of a single level pressure signal source, adopts a multi-signal redundancy thought, can improve the reliability of a level pressure signal used by a hydropower station, and ensures the safe operation of quick door equipment facilities of the power station; in addition, the invention also discloses a corresponding device, which reduces the economic cost in the civil engineering stage, enhances the speed and efficiency of rapid door lifting operation when an accident occurs in the operation stage of the power station, recovers the standby state of the unit in time, improves the emergency handling capacity, and reduces the maintenance workload and the operation cost of the flat-pressure signal.
Description
Technical Field
The invention relates to the technical field of hydraulic power station quick door water filling and pressure leveling, in particular to a method and a device suitable for quick door water filling and pressure leveling of an underground power station unit.
Background
Generally, the installation position of a differential pressure switch of a flat pressure signal on the upstream and the downstream of a hydropower station is lower, so that the routine maintenance is convenient. Because the pressure measuring hose inside the pressure difference switch is thinner and has a small diameter, a small amount of silt easily enters into a pressure measuring pipeline of the pressure difference switch when the water quality is poor, and the pressure measuring hose is easy to accumulate inside the pressure difference switch to block the pressure measuring pipe, so that the pressure difference switch cannot normally act. Discovery among the routine maintenance, differential pressure switch was more easy to be blockked up during rich water period, and the leading cause is exactly through strong rainfall back, and reservoir quality of water becomes muddy, and impurity is more in the pipeline, changes and causes the jam. Simultaneously, a pressure difference switch, a corresponding pipeline and a maintenance personnel maintenance channel are arranged at a lower position of the underground power station, so that the economic cost in a civil engineering stage can be increased, the reliability of the pressure difference switch is not high, the reliability of the horizontal pressure filling of the quick door after the unit maintenance can be reduced, the quick door cannot be lifted immediately, and the labor maintenance workload and the cost are increased. The main defects and shortcomings are as follows:
1) the existing flat pressure signal differential pressure switch used in a hydropower station has low reliability, and certain hidden trouble exists in the safe operation of power station equipment facilities.
2) On the one hand, the economic cost in the civil engineering stage is increased by the design and the installation of the conventional flat pressure signal, and on the other hand, the reliability of the differential pressure switch in the operation stage of the power station is not high, so that the reliability of the horizontal pressure filled in the quick door after the unit is overhauled can be reduced, the quick door cannot be lifted immediately, and further, the labor maintenance workload and the cost are increased.
Disclosure of Invention
The invention aims to overcome the defects and provide a method and a device for filling horizontal pressure for a quick door of an underground power station unit, which can solve the problems in the background art.
In order to solve the technical problems, the invention adopts the technical scheme that: a method for filling horizontal pressure to a quick door of an underground power station unit comprises the following steps:
step 1): after the hydraulic turbine set pressure steel pipe is filled with water, a volute inlet pressure signal is sent to a set LCU, and the equivalent reservoir upstream water level is obtained;
step 2): sending a water level signal behind the trash rack to a unit LCU to obtain a water level behind the trash rack, and outputting the water level signal under the condition when the absolute value of the difference between the water level behind the trash rack and the water level which can be equivalently the upstream water level of the reservoir is less than or equal to a set value B;
step 3): when the acquired volute inlet pressure value is greater than a set value C, outputting the condition;
and step 4): in the process of filling water into the pressure steel pipe of the hydraulic turbine set, if the opening of the quick valve is larger than a set value E and smaller than a set value D, the condition output is met;
step 5): the back water level signal of the rapid gate is sent to the LCU to obtain the back water level of the rapid gate, and when the absolute value of the difference value between the back water level of the trash rack and the back water level of the rapid gate is less than or equal to a set value F, the condition output is met;
step 6): the water level behind the quick door is more than or equal to a set value G, and if the water level meets the conditions, the water level is output;
step 7): performing phase comparison and post-output on the three output conditions of the step 2) and the step 3) and the step 4);
step 8): performing phase inversion on the three output condition phases of the step 4) and the step 5) and the step 6);
step 9): step 7) and step 8) are or are followed to output a signal allowing the central control room to manually level pressure;
step 10): and step 9), the LCU is automatically accessed, and an operator sends three condition phases of a flat pressure command and a rear output flat pressure filling command of the quick door, so that the hydraulic opening and closing system of the quick door starts the quick door lifting operation.
Preferably, in the step 1), the volute inlet pressure data is multiplied by a conversion coefficient of 100.0 and then converted into a corresponding elevation difference, the elevation difference is added with a set value a to obtain an equivalent reservoir upstream water level, and the set value a is an elevation corresponding to the installation of the water turbine volute pressure sensor.
Preferably, the value of the set value B is 6.
Preferably, the set value C is a volute inlet pressure value when the penstock of the upstream reservoir is filled with water at the dead water level, and is also a minimum pressure value when the penstock is filled with water.
Preferably, the value of the set value D is 3.0%, and the value of the set value E is 1.5%.
Preferably, the value of the set value F is 3.0.
Preferably, the set value G is the upstream reservoir dead water level.
Preferably, in the step 10), the step 9), the LCU is automatically switched in, and the operator sends the leveling command, and outputs the three condition phases, wherein the output of the three condition phases is output after passing through the TP pulse width module, the signal is a command for setting the quick door to fill the leveling command, the command acts on the hydraulic opening and closing system of the quick door to start the lifting operation of the quick door, and the time of the TP pulse width signal is 1 minute.
In addition, the invention also discloses a device suitable for the quick door filling level pressure of the underground power station unit, which comprises a multiplier, an adder, a subtracter I, an absolute value module I, a first less than or equal to a comparator I, an AND gate module I, a first greater than the comparator I, a less than comparator, a second greater than the comparator, an AND gate module II, a subtracter II, an absolute value module II, a second less than or equal to a comparator II, a third greater than the comparator, an AND gate module III, an OR gate module, an AND gate module IV and a TP pulse width module, and is characterized in that: the multiplier is connected with the adder and then is connected to one input end of the first subtracter; the multiplier, the adder, the first subtracter, the first absolute value module and the first less than or equal to comparator are connected in sequence and then connected to one input end of the first AND gate module; the output end of the first AND gate module is connected with one input end of the OR gate module;
the output end of the first comparator is connected with one input end of the first AND gate module; the output end of the second AND gate module is connected with one input end of the first AND gate module and one input end of the third AND gate module respectively;
the subtractor II, the absolute value module II and the comparator II which is less than or equal to the absolute value module II are connected in sequence and then are connected to one input end of the AND gate module III; the output end of the comparator III is connected with one input end of the AND gate module III; the three output ends of the AND gate module are connected with one input end of the OR gate module;
and after the output end of the OR gate module outputs a signal allowing the central control room to manually level the voltage and is sequentially connected with the fourth AND gate module and the TP pulse width module, the TP pulse width module outputs a command of setting the fast gate to charge the voltage.
Preferably, one input end of the multiplier inputs volute inlet pressure data, and the other input end of the multiplier inputs a conversion coefficient of 100.0; a set value A is input into one input end of the adder; one input end of the subtracter I inputs the water level data after the trash rack, and one input end of the subtracter I is smaller than or equal to a set value B input by one input end of the comparator I; one input end of the comparator I is used for inputting volute inlet pressure data, and the other input end of the comparator I is used for inputting a set value C;
one input end of the comparator is used for inputting the opening data of the quick door, and the other input end of the comparator is used for inputting a set value D; one input end of the comparator II is larger than the input end of the comparator II, and the other input end of the comparator II inputs the data of the quick opening;
one input end of the subtracter II inputs water level data behind the trash rack, and the other input end of the subtracter II inputs water level data behind the rapid door; a set value F is input into one input end of the second comparator; one input end of the comparator III is used for inputting the water level data after the quick door, and the other input end of the comparator III is used for inputting a set value G;
and one input end of the AND gate module II inputs a signal for allowing the central control room to level and press manually, one input end of the AND gate module II inputs an LCU automatic mode, and the other input end of the AND gate module II inputs a level and press command sent by an operator.
The invention has the beneficial effects that:
(1) the method solves the problem of a single flat voltage signal source, adopts the thought of multi-signal redundancy, can improve the reliability of flat voltage signals used by the hydropower station, and ensures the safe operation of rapid door equipment facilities of the hydropower station.
(2) By the method, the economic cost in the civil engineering stage can be reduced, the speed and the efficiency of rapid door lifting operation are improved when an accident occurs in the operation stage of the power station, the standby state of the unit is recovered in time, and the emergency disposal capability is improved.
(3) By the method, the maintenance workload and the operation cost of the flat-pressing signal are reduced.
Drawings
Fig. 1 is a schematic flow diagram of a device suitable for filling a rapid door of an underground power station unit with horizontal pressure.
FIG. 2 is an enlarged schematic view of a portion of the process of FIG. 1;
FIG. 3 is an enlarged schematic view of a portion of the process of FIG. 1;
fig. 4 is an enlarged schematic view of a part of the flow of fig. 1.
Detailed Description
The invention is described in further detail below with reference to the figures and specific embodiments.
As shown in fig. 1 to 4, a method for filling a rapid door with a horizontal pressure for an underground power plant unit comprises the following steps:
step 1): after the hydraulic turbine set pressure steel pipe is filled with water, a volute inlet pressure signal is sent to a set LCU, and the equivalent reservoir upstream water level is obtained;
step 2): sending a water level signal behind the trash rack to a unit LCU to obtain a water level behind the trash rack, and outputting the water level signal under the condition when the absolute value of the difference between the water level behind the trash rack and the water level which can be equivalently the upstream water level of the reservoir is less than or equal to a set value B; in the embodiment, a piezoresistive liquid level meter is adopted based on a water level signal behind a trash rack of an underground power station, the liquid level meter is arranged behind the trash rack and placed in a steel barrel with the diameter of about 30 cm, and the steel barrel is vertically communicated with a quick door flow channel.
Step 3): when the acquired volute inlet pressure value is greater than a set value C, outputting the condition;
step 4): in the process of filling water into the hydraulic turbine set pressure steel pipe, the set quick door needs to be lifted to a certain opening, the opening of the quick door is displayed in percentage, and if the opening of the quick door is larger than a set value E and smaller than a set value D, the condition output is met;
step 5): the quick door rear water level signal is sent to the unit LCU to obtain the quick door rear water level, and when the absolute value of the difference value between the quick door rear water level and the trash rack rear water level is less than or equal to a set value F, the condition output is met; in this embodiment, adopt the piezoresistive level gauge based on quick door back water level signal in underground power station, locate this level gauge behind the quick door, place in the inside of the steel drum of diameter about 30 centimetres, the steel drum communicates with quick door runner is perpendicular.
Step 6): the water level behind the quick door is more than or equal to a set value G, and if the water level meets the conditions, the water level is output;
step 7): performing phase inversion on the three output condition phases of the step 2) and the step 3) and the step 4);
step 8): performing phase comparison and post-output on the three output conditions of the step 4) and the step 5) and the step 6);
step 9): step 7) and step 8) are combined or afterwards, a signal allowing the central control room to manually level pressure is output;
step 10): and step 9), the LCU is automatically accessed, and an operator sends three condition phases of a flat pressure command and a rear output flat pressure filling command of the quick door, so that the hydraulic opening and closing system of the quick door starts the quick door lifting operation.
Preferably, in the step 1), the volute inlet pressure is in units of MPa, the volute inlet pressure data is converted into a corresponding elevation difference after being multiplied by a conversion coefficient of 100.0, the elevation difference is added with a set value a to obtain an equivalent reservoir upstream water level, and the set value a is an elevation (in units of meters) corresponding to the installation of the water turbine volute pressure sensor.
Preferably, the value of the set value B is 6.
Preferably, the set value C is a volute inlet pressure value when the penstock of the upstream reservoir is filled with water at the dead water level, and is also a minimum pressure value when the penstock is filled with water.
Preferably, the value of the set value D is 3.0%, and the value of the set value E is 1.5%.
Preferably, the value of the set value F is 3.0.
Preferably, the set value G is the upstream reservoir dead water level.
Preferably, in the step 10), the step 9), the LCU is automatically switched in, and the operator sends the leveling command, and outputs the three condition phases, wherein the output of the three condition phases is output after passing through the TP pulse width module, the signal is a command for setting the quick door to fill the leveling command, the command acts on the hydraulic opening and closing system of the quick door to start the lifting operation of the quick door, and the time of the TP pulse width signal is 1 minute.
In addition, the invention also discloses a device suitable for the quick door filling level pressure of the underground power station unit, which comprises a multiplier 1, an adder 2, a first subtracter 3, a first absolute value module 4, a first less than or equal to comparator 5, a first AND gate module 6, a first greater than comparator 7, a second less than comparator 8, a second greater than comparator 9, a second AND gate module 10, a second subtracter 11, a second absolute value module 12, a second less than or equal to comparator 13, a third greater than comparator 14, a third AND gate module 15, an OR gate module 16, a fourth AND gate module 17 and a TP pulse width module 18, and is characterized in that: the multiplier 1 is connected with the adder 2 and then is connected to one input end of a subtracter I3; the multiplier 1, the adder 2, the subtracter I3, the absolute value module I4 and the comparator I5 are connected in sequence and then connected to one input end of the AND gate module I6; the output end of the first AND gate module 6 is connected with one input end of the OR gate module 16;
the output end of the comparator I7 is connected with one input end of the AND gate module I6; the output end of the comparator 8 is connected with one input end of the second AND module 10, the output end of the comparator 9 is connected with the other input end of the second AND module 10, and the output end of the second AND module 10 is respectively connected with one input end of the first AND module 6 and one input end of the third AND module 15;
the second subtractor 11, the second absolute value module 12 and the second less than or equal to comparator 13 are connected in sequence and then connected to one input end of the third AND gate module 15; the output end of the comparator III 14 is connected with one input end of the AND gate module III 15; the output end of the AND gate module III 15 is connected with one input end of the OR gate module 16;
and after the output end of the OR gate module 16 outputs a signal allowing the central control room to manually level the voltage and is sequentially connected with the AND gate module IV 17 and the TP pulse width module 18, the TP pulse width module 18 outputs a command for setting the fast gate to charge the voltage.
Preferably, one input end of the multiplier 1 inputs volute inlet pressure data, and the other input end of the multiplier 1 inputs a conversion coefficient of 100.0; a set value A is input into one input end of the adder 2; one input end of the subtracter I3 inputs the water level data after the trash rack, and one input end of the subtracter I is less than or equal to a set value B input by one input end of the comparator I5; one input end of the comparator I7 is used for inputting volute inlet pressure data, and the other input end of the comparator I is used for inputting a set value C;
one input end of the comparator 8 inputs the opening data of the quick door, and the other input end inputs a set value D; one input end of the comparator II 9 is larger than the input end of the fast opening data, and the other input end of the comparator II is larger than the input end of the fast opening data;
one input end of the subtracter II 11 inputs water level data behind the trash rack, and the other input end of the subtracter II inputs water level data behind the rapid gate; a set value F is input into one input end of the second comparator 13; one input end of the comparator III 14 inputs the water level data after the quick door, and the other input end inputs a set value G;
and one input end of the AND gate module IV 17 inputs a signal for allowing the central control room to level the pressure manually, one input end inputs an LCU automatic mode, and the other input end inputs a level pressure command sent by an operator. In addition, in this embodiment, T #1M is input to one input terminal of the TP pulse width module 18.
Specific examples are as follows:
14 o 10 o' clock on 19 days 4 and 19 months in a certain year, the pressure steel pipe needs to be filled with water after the XXF unit of a certain hydropower station is overhauled, and the quick door is lifted to be fully opened for related operation: the operator executes the operation of 'XXF quick door dismantling and movement prevention, and full opening after lifting the door to the water filling level'.
14:11, sending an XXF quick door opening gate command to the central control room;
14:12XXF quick door lifting to 251mm water filling level, the opening of the quick door is 2.0%;
14:52 monitoring system XXF quick door 'allow central control room manual flat pressure' lighting;
14, after an XXF quick door operator sends a flat pressure command from a central control room 52, a monitoring system sends a horizontal pressure command for setting the quick door and continuously lifting the quick door by monitoring the XXF quick door by operating personnel;
the 15:09XXF quick door is fully opened, the opening degree is 100.1 percent, and the opening degree of the quick door is 11501mm in field inspection.
When an XXF quick door 'allows the central control room to be manually pressed' to be lightened, the monitoring events and the trend analysis system data are checked to obtain that: the inlet pressure of the volute is 2.02MPa, the water level behind the trash rack is 572.3 meters, the water level behind the rapid gate is 572.2 meters, the set value A is 366 meters in elevation, the set value C is 1.30MPa, the set value G is 540.0 meters of upstream dead water level, the set value B is 6.0 meters, the set value D is 3.0 percent, the set value E is 1.5 percent, the set value F is 3.0 meters, and the LCU monitoring mode is an automatic mode.
Substituting the above related data into the module in the example diagram, |572.3- (2.02 × 100+366) | ═ 4.3 ≦ 6, and satisfying the condition;
1.5% < the opening of the quick door is 2.0% < 3.0%, and the condition is satisfied;
the condition is satisfied when the |572.3-572.2| -, 0.1 is less than or equal to 3;
in summary, the following steps: according to the data and the data converted from the substitution module, the signal condition meeting the requirement of allowing the central control room to perform manual flattening can be obtained, and then the operator can send an operator flattening command to lift the quick door to full opening in time.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (5)
1. A method suitable for filling water and level pressure of a quick door of an underground power station unit is characterized by comprising the following steps: the method comprises the following steps:
step 1): after the hydraulic turbine set pressure steel pipe is filled with water, a volute inlet pressure signal is sent to a set LCU, and the equivalent reservoir upstream water level is obtained;
step 2): sending a water level signal behind the trash rack to a unit LCU to obtain a water level behind the trash rack, and outputting the water level signal under the condition when the absolute value of the difference between the water level behind the trash rack and the water level which can be equivalently the upstream water level of the reservoir is less than or equal to a set value B;
step 3): when the acquired volute inlet pressure value is greater than a set value C, outputting the condition;
step 4): in the process of filling water into the pressure steel pipe of the hydraulic turbine set, if the opening of the quick valve is larger than a set value E and smaller than a set value D, the condition output is met;
step 5): the quick door rear water level signal is sent to the unit LCU to obtain the quick door rear water level, and when the absolute value of the difference value between the quick door rear water level and the trash rack rear water level is less than or equal to a set value F, the condition output is met;
step 6): the water level behind the quick door is more than or equal to a set value G, and if the water level meets the conditions, the water level is output;
step 7): performing phase inversion on the three output condition phases of the step 2) and the step 3) and the step 4);
step 8): performing phase comparison and post-output on the three output conditions of the step 4) and the step 5) and the step 6);
step 9): step 7) and step 8) are combined or afterwards, a signal allowing the central control room to manually level pressure is output;
step 10): step 9), an LCU is automatically accessed, three condition phases of a flat pressure command sent by an operator are compared with a rear output horizontal pressure charging command of the quick door, and the hydraulic opening and closing system of the quick door starts the quick door lifting operation;
the value of the set value B is 6; the set value C is the inlet pressure value of the volute when the penstock of the upstream reservoir is filled with water at the dead water level and is also the minimum pressure value when the penstock is filled with water; the value of the set value D is 3.0%, and the value of the set value E is 1.5%; the value of the set value F is 3.0; and the set value G is the upstream reservoir dead water level.
2. The method of claim 1, wherein the method comprises the steps of: in the step 1), the volute inlet pressure data is multiplied by a conversion coefficient of 100.0 and then converted into corresponding elevation difference, the elevation difference is added with a set value A to obtain the equivalent reservoir upstream water level, and the set value A is taken as the elevation corresponding to the installation of the water turbine volute pressure sensor.
3. The method of claim 1, wherein the method comprises the steps of: in the step 10), the step 9), the LCU is automatically accessed, and an operator sends a flat pressure command, and the three condition phases are output after the three condition phases are combined, the output of the three condition phases passes through the TP pulse width module and then outputs a signal, the signal is a command for setting the quick door to fill the horizontal pressure, the command acts on a hydraulic opening and closing system of the quick door and then starts the quick door lifting operation, and the time of the TP pulse width signal is 1 minute.
4. The utility model provides a device suitable for quick door of underground power station unit fills horizontal voltage, includes multiplier (1), adder (2), subtracter (3), absolute value module (4), less than or equal to comparator (5), AND gate module (6), be greater than comparator (7), be less than comparator (8), be greater than comparator two (9), AND gate module two (10), subtracter two (11), absolute value module two (12), less than or equal to comparator two (13), be greater than comparator three (14), AND gate module three (15), OR gate module (16), AND gate module four (17), TP pulse width module (18), its characterized in that: the multiplier (1) is connected with the adder (2) and then is connected to one input end of the subtracter I (3); the multiplier (1), the adder (2), the subtracter I (3), the absolute value module I (4) and the less than or equal to comparator I (5) are connected in sequence and then are connected to one input end of the AND gate module I (6); the output end of the first AND gate module (6) is connected with one input end of the OR gate module (16);
the output end of the comparator I (7) is connected with one input end of the AND gate module I (6); the output end of the comparator (8) is connected with one input end of the AND gate module II (10), the output end of the comparator (9) is connected with the other input end of the AND gate module II (10), and the output end of the AND gate module II (10) is respectively connected with one input end of the AND gate module I (6) and one input end of the AND gate module III (15);
the subtracter II (11), the absolute value module II (12) and the less than or equal to comparator II (13) are connected in sequence and then connected to one input end of the AND gate module III (15); the output end of the comparator III (14) is connected with one input end of the AND gate module III (15); the output end of the AND gate module III (15) is connected with one input end of the OR gate module (16);
and after the output end of the OR gate module (16) outputs a signal allowing the central control room to manually level the pressure and is sequentially connected with the AND gate module IV (17) and the TP pulse width module (18), the TP pulse width module (18) outputs a command of setting the quick gate to fill the level pressure.
5. The device of claim 4, wherein the device is adapted for filling the underground power plant unit fast door with horizontal pressure, and comprises: one input end of the multiplier (1) inputs volute inlet pressure data, and the other input end of the multiplier (1) inputs a conversion coefficient of 100.0; a set value A is input into one input end of the adder (2); one input end of the subtracter I (3) inputs the water level data after the trash rack, and one input end of the subtracter I (3) is less than or equal to a set value B input by one input end of the comparator I (5); one input end of the comparator I (7) is used for inputting volute inlet pressure data, and the other input end of the comparator I is used for inputting a set value C;
one input end of the comparator (8) is used for inputting the data of the opening degree of the quick door, and the other input end is used for inputting a set value D; one input end of the comparator II (9) is larger than the input end of the comparator II, and the other input end of the comparator II inputs the data of the quick opening;
one input end of the subtracter II (11) inputs water level data behind the trash rack, and the other input end of the subtracter II inputs water level data behind the rapid gate; a set value F is input into one input end of the second comparator (13) which is less than or equal to the second comparator; one input end of the comparator (14) is larger than the input end of the quick door rear water level data, and the other input end of the comparator (14) is used for inputting a set value G;
and one input end of the AND gate module (17) inputs a signal for allowing the central control room to level manually, one input end inputs an LCU automatic mode, and the other input end inputs an operator to send a level pressure command.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000240556A (en) * | 1999-02-22 | 2000-09-05 | Tokyo Electric Power Co Inc:The | Operation controller for hydro-electric power plant |
| CN206002926U (en) * | 2016-07-28 | 2017-03-08 | 重庆中皓智云电气有限公司 | Power station intelligent management system |
| CN107577148A (en) * | 2017-09-25 | 2018-01-12 | 国网山东省电力公司电力科学研究院 | Fired power generating unit primary frequency modulation Optimal Control System and method based on water supply compensating |
| CN208056007U (en) * | 2018-04-02 | 2018-11-06 | 黄河勘测规划设计有限公司 | By-pass line system for hydraulic steel gate concora crush |
-
2021
- 2021-03-29 CN CN202110335239.4A patent/CN113048006B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000240556A (en) * | 1999-02-22 | 2000-09-05 | Tokyo Electric Power Co Inc:The | Operation controller for hydro-electric power plant |
| CN206002926U (en) * | 2016-07-28 | 2017-03-08 | 重庆中皓智云电气有限公司 | Power station intelligent management system |
| CN107577148A (en) * | 2017-09-25 | 2018-01-12 | 国网山东省电力公司电力科学研究院 | Fired power generating unit primary frequency modulation Optimal Control System and method based on water supply compensating |
| CN208056007U (en) * | 2018-04-02 | 2018-11-06 | 黄河勘测规划设计有限公司 | By-pass line system for hydraulic steel gate concora crush |
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| CN113048006A (en) | 2021-06-29 |
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