CN115305879A - Reservoir dispatching and hydroelectric generation integrated control method and storage medium - Google Patents
Reservoir dispatching and hydroelectric generation integrated control method and storage medium Download PDFInfo
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- CN115305879A CN115305879A CN202210906839.6A CN202210906839A CN115305879A CN 115305879 A CN115305879 A CN 115305879A CN 202210906839 A CN202210906839 A CN 202210906839A CN 115305879 A CN115305879 A CN 115305879A
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- radial gate
- opening
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- radial
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
-
- 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 reservoir dispatching and hydroelectric generation integrated control method and a storage medium, wherein the method is respectively provided with a first-stage radial gate opening and closing control water level and a second-stage radial gate opening and closing control water level, the first-stage radial gate control water level and the inlet/outlet flow difference do water level trend judgment action on radial gate control, the second-stage radial gate control water level directly acts on radial gate control, the automatic dispatching of a spillway radial gate is realized, and the upstream reservoir water level is controlled within the range specified by the affirmation electric quantity. The method realizes automatic scheduling of the radial gate on the premise of automatically controlling hydroelectric power generation, so that the water level of the reservoir in front of the dam is in a reasonable interval, and safe and stable operation of a water conservancy building is ensured. The invention can improve the timeliness of the radial gate control and relieve the working pressure of operating personnel during the running period of the flood season.
Description
Technical Field
The invention relates to an intelligent control method for hydroelectric power generation, in particular to a reservoir dispatching and hydroelectric power generation integrated control method and a storage medium.
Background
At present, the traditional manual calculation + remote control scheduling mode is adopted in the radial gate control of the hydropower industry, the control mode is poor in timeliness and is influenced by the calculation level of personnel for the water conservancy building with small reservoir capacity but large water volume and frequent change, the risk that the radial gate of the spillway in a dam area is frequently adjusted or is not timely adjusted exists, the water is excessively abandoned or the reservoir continuously runs at a high water level or even overflows a dam, the safe and stable running of a unit is influenced, and unnecessary economic loss is caused.
Therefore, it is necessary to invent a reservoir dispatching and hydroelectric power generation integrated control method to control the reservoir water level in front of the dam in a reasonable interval, improve the economic benefit of enterprises and reduce the working pressure of operators.
Disclosure of Invention
Aiming at the problems, the inventor provides a reservoir dispatching and hydroelectric generation integrated control method, the existing hardware equipment is utilized, no additional hardware investment is added, a programmable logic controller based on a Local Control Unit (LCU) realizes automatic dispatching of an arc gate by carrying out program development and computer monitoring system database development on the LCU, so that the reservoir water level in front of a dam is in a reasonable interval, the personnel cost of a water conservancy junction is saved to the maximum extent, and the safe and stable operation of the dam is ensured.
Specifically, according to the first aspect, the invention provides a reservoir dispatching and hydroelectric power generation integrated control method, wherein the control object of the control method comprises a radial gate with the surface hole number of 1-M, the radial gate with the surface hole number of 1-M (usually, a spillway radial gate) is divided into a region I and a region II, wherein the surface hole number of 1 is
Region I,
number-M is zone II, which is characterized by comprising the following steps:
step S1: reservoir warehousing flow Q for acquiring reservoir water situation center in And reservoir level h p Data, collecting the state and active power of the generator set;
step S2: setting the first-stage opening water level of the radial gate to h 1 Second level of opening water level is set to h max Wherein h is 1 ＜h max (ii) a Setting the first-stage closing water level of the spillway radial gate as h 2 Second level off is set to h min Wherein h is 1 ＞h 2 ＞h min ；
And step S3: calculating the flow Q of the warehouse-out according to the following formula out ：
In the formula: p i The active power of No. 1-N single machines of the generator set is set, and Q is set when the state of the generator set is a shutdown state out =0, Q when the state of the unit is non-stop state out Calculating according to the formula; h j The opening degree of the radial gate with 1-M holes;
and step S4: the radial gate is automatically opened and closed:
(1) When h is generated p ≥h max When in use, the radial gate is directly opened, then the S1 is rotated,
when h is generated p ≥h 1 And when Q is in ＞Q out Opening the radial gate regularly, and then turning to S1;
when h is generated p ＜h 1 Turning to (2);
(2) When h is generated p ≤h min When in use, the radial gate is directly closed, then the S1 is turned,
when h is generated p ≤h 2 And Q in ＜Q out The radial gate is closed regularly, then S1 is turned,
(3) Otherwise, the opening and closing operation of the radial gate is not carried out;
directly open radial gate, conventionally open radial gate, directly close radial gate, conventionally close radial gate do: when Q is in -Q out ≤Q 0 When the number 1 of the region I is adopted
Horn arcThe shape gate is synchronously and uniformly opened/closed; when Q is in -Q out >
Q 0 The synchronous and uniform opening/closing mode of the No. 1-M radial gate is adopted;
further, directly open radial gate, the conventional radial gate of opening, directly close radial gate, the conventional radial gate of closing still includes:
the radial gate is alternately opened and closed; only one arc gate is operated when the arc gate is automatically opened and closed every time, and the opening and closing period of the arc gate is set to be more than 15 min.
Preferably, the serial number of the surface hole of the radial gate is No. 1-10, and the principle of automatically opening and closing the radial gate comprises:
the radial gate of the No. 1 to No. 5 meter hole is a region I, and the radial gate of the No. 6 to No. 10 meter hole is a region II; q in -Q out ≤Q 0 A flood discharge mode that 5 holes in the area I are synchronously and uniformly opened and closed is adopted; q in -Q out >Q 0 And a flood discharge mode that all 10 holes are synchronously and uniformly opened and closed is adopted.
Furthermore, the opening sequence of the radial gate is carried out according to the principle that the radial gate is opened at intervals from the middle to the two sides, so that synchronous and uniform opening is realized; the closing sequence of the radial gate is carried out according to the principle that the two sides are closed at intervals and then the middle is closed.
Preferably, the radial gate is opened step by taking 1m as a gradient, the priority is highest when the radial gate has the smallest opening, and if a plurality of radial gates with the smallest opening are in the same gradient, the priorities are selected according to the sequence of the radial gates with the surface holes 3 → 4 → 2 → 5 → 1 → 8 → 9 → 7 → 10 → 6, so as to meet the door opening principle of opening the radial gates at intervals from the middle to the two sides.
Preferably, the radial gate is closed step by step in a gradient of 1m, the highest priority is given when the radial gate has the largest opening, and if a plurality of radial gates having the largest opening are on the same gradient, the priorities are selected in the order of the front-hole radial gate 6 → 10 → 7 → 9 → 8 → 1 → 5 → 2 → 4 → 3 so as to satisfy the closing rule of "closing with the interval between the two sides and the middle".
Further, the radial gate opening and closing includes:
the opening and closing conditions of the radial gate comprise: the radial gate is at a remote position, the oil pump is not abnormal, the pressure of the hydraulic system is not abnormal, the hose with the rod cavity is not broken, the oil filter of the hydraulic system is not blocked, the oil level and the oil temperature of the hydraulic system are not abnormal, a signal and a control power supply are not abnormal, the PLC is controlled to be abnormal, and the stroke difference of the left cylinder and the right cylinder is less than 10mm; before the radial gate is rotated, whether the conditions meet the opening and closing requirements or not is judged, and if the conditions do not meet the requirements, the radial gate is forbidden to participate in automatic control rotation.
Preferably, it is provided that: h is max ＝75.36m，h 1 ＝75.35m，h min ＝75.21m，h 2 ＝75.22m，Q 0 ＝1700m 3 /s。
According to a second aspect, the invention also provides a computer storage medium having a computer program stored thereon for execution by a processor to perform the steps of a reservoir scheduling and hydroelectric power generation integrated control method of the invention.
The invention also provides a soft switch for the automatic control mode of the upper computer of the computer monitoring system, so as to realize the manual switching on and off of the water regulation and power generation integrated automatic control system.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the reservoir dispatching and hydroelectric generation integrated control method, through automatic adjustment, the personnel cost of a hydro-junction is saved to the maximum extent, and the working pressure of operating personnel during the running period of the flood season is relieved.
(2) The system avoids the serious consequence of untimely flood discharge, ensures flood control and flood fighting of the power station, improves the efficiency and the timeliness, ensures the safe and stable operation of the unit, and avoids causing unnecessary economic loss.
Drawings
FIG. 1: flow chart of the method of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1, a reservoir dispatching and hydroelectric power generation integrated control method includes the following steps:
step 1: the water regime center converts the upstream incoming water flow and the reservoir water level in front of the dam into analog quantity through analog-to-digital conversion and sends the analog quantity into an LCU analog quantity channel of the dam area;
step 2: communicating with each unit LCU, and collecting the unit active power and the unit state signals of the No. 1-8 unit;
and 3, step 3: the No. 1-10 spillway radial gate is connected to the LCU in the dam area in an analog quantity mode;
according to the model of the flow of the speed regulator of the hydroelectric generating set (the full flow of the single generator is 250 m) 3 (s) and spillway radial gate flow model (Single gate 170 m) 3 /s m) automatically calculating the flow out of the warehouse. The ex-warehouse flow calculation formula is as follows:
in the formula: p i Active power of No. 1-8 single machine of the generating set (N = 8), and Q is set when the state of the generating set is in a shutdown state out =0, Q when the state of the unit is non-stop state out Calculating according to the formula; h j Opening degree of the radial gate of 1-10 (M = 10) holes;
and 4, step 4: judging the rotation condition of the radial gate;
before the radial gate is switched, whether the conditions meet the opening and closing requirements or not is judged, if the conditions do not meet the requirements, the radial gate is forbidden to participate in automatic control switching, and the opening and closing conditions of the radial gate comprise: the radial gate is at a remote position, the oil pump is not abnormal, the pressure of the hydraulic system is not abnormal, the hose with the rod cavity is not broken, the oil filter of the hydraulic system is not blocked, the oil level of the hydraulic system is not abnormal, the oil temperature is not abnormal, a signal is not generated, a control power supply is not abnormal, the PLC is not abnormal, and the stroke difference of the left cylinder and the right cylinder is less than 10mm.
And 5: the opening and closing principle of the radial gate;
the radial gate is divided into a region I and a region II, the radial gate with the number 1 to 5 gauge holes is the region I, and the radial gate with the number 6 to 10 gauge holes is the region II. The opening sequence of the radial gate is carried out according to the principle of opening the radial gate at intervals from the middle to the two sides, so that synchronous and uniform opening is realized; the closing sequence of the radial gate is carried out according to the principle that the two sides are closed at intervals and then the middle is closed.
The first and second areas of the radial gate are opened and closed according to the flow difference in a partition mode, and the flow difference between the warehouse entry and the warehouse exit is less than or equal to 1700m 3 A flood discharge mode of synchronously and uniformly opening and closing 5 holes in the area I is adopted in the time of/s; difference in flow rate of entering and exiting warehouse>1700m 3 And in the case of the second, a flood discharge mode of synchronously and uniformly opening and closing 10 holes is adopted.
The lubrication of the radial gate can only be satisfied by lubricating water for one arc gate at a time, so that only one arc gate can be operated by opening and closing the radial gate at a time, in order to satisfy the requirements, the opening and closing period of the radial gate is set to be 15min, and the opening and closing of the radial gate are automatically operated by taking 1m as a gradient.
Step 6: judging the opening priority of the radial gate and judging the automatic opening condition;
the radial gate is opened step by taking 1m as a gradient, the priority is highest when the radial gate has the smallest opening, and if a plurality of radial gates with the smallest opening are in the same gradient, the priorities are selected according to the sequence of 3 → 4 → 2 → 5 → 1 → 8 → 9 → 7 → 10 → 6 so as to meet the door opening principle of opening at intervals from the middle to the two sides.
The water level of the reservoir area required by the electricity regulation is determined to be controlled below 75.36m, so that the first-stage opening water level of the spillway radial gate is set to be 75.35m (at this time, the radial gate can be opened after the warehousing flow is judged to be larger than the ex-warehouse flow), and the second-stage opening water level is 75.36m (the radial gate is directly opened).
And 7: judging the closing priority of the radial gate and judging the automatic closing condition;
the closing of the radial gates is performed step by step with 1m as a gradient, the priority is highest when the radial gate has the largest opening, and if a plurality of radial gates having the largest opening are in the same gradient, the priorities are selected in the order of 6 → 10 → 7 → 9 → 8 → 1 → 5 → 2 → 4 → 3 so as to satisfy the closing principle of closing the radial gates at intervals of two sides first and then middle.
The water level of the reservoir area required by the electricity regulation is determined to be controlled to be more than 75.21, so that the primary closing water level of the spillway radial gate is set to be 75.22m (at the moment, the radial gate can be closed after the storage flow is judged to be smaller than the delivery flow), and the secondary closing water level is 75.21m (the radial gate is directly closed).
And 8: and (4) switching on and off in a water regulation and power generation integrated automatic control mode.
A set of water regulation and power generation integrated automatic control mode soft switch is arranged on an upper computer of a computer monitoring system, so that manual switching-on and switching-off of the water regulation and power generation integrated automatic control system are realized, functions of switching-off in a dry season and switching-on in a flood season are realized, and misoperation of equipment in the dry season is prevented.
The invention has the full-automatic dispatching function of the reservoir, can save the personnel cost of the hydro-junction to the maximum extent, is suitable for the hydro-junction facilities with less on-duty personnel and frequent opening and closing dispatching of the radial gate, has higher timeliness for automatic operation, can cut peaks and fill valleys in time, and is an effective dam break and dam overflow prevention technical measure. The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. A reservoir dispatching and hydroelectric power generation integrated control method comprises the steps that a control object of the control method comprises a radial gate with a surface hole number of 1-M, the radial gate with the surface hole number of 1-M is divided into a first area and a second area, and the surface hole number of 1E to E
Region I,
number-M is zone II, which is characterized by comprising the following steps:
step S1: reservoir warehousing flow Q for acquiring reservoir water situation center in And reservoir level h p Data, collecting the state and active power of the generator set;
step S2: setting the first-stage opening water level of the radial gate to h 1 Second level of opening water level is set to h max Wherein h is 1 ＜h max (ii) a The first-stage closing water level of the spillway radial gate is set as h 2 Second level off is set to h min Wherein h is 1 ＞h 2 ＞h min ；
And step S3: calculating the flow Q of the warehouse-out according to the following formula out ：
In the formula: p is i The active power of No. 1-N single machines of the generator set is set, and Q is set when the state of the generator set is a shutdown state out =0, Q when the state of the unit is non-stop state out Calculating according to the formula; h j The opening degree of the radial gate with 1-M holes;
and step S4: automatic opening of radial gate, closing includes:
(1) When h is generated p ≥h max When in use, the radial gate is directly opened, then the S1 is turned,
when h is p ≥h 1 And when Q is in ＞Q out Opening the radial gate regularly, and then turning to S1;
when h is p ＜h 1 Turning to (2);
(2) When h is p ≤h min When in use, the radial gate is directly closed, then the S1 is turned,
when h is p ≤h 2 And Q in ＜Q out The radial gate is closed regularly, then S1 is turned,
(3) Otherwise, the opening and closing operation of the radial gate is not carried out;
directly open radial gate, conventional radial gate, directly close radial gate, the conventional radial gate that closes: when Q is in -Q out ≤Q 0 No. 1 to
The synchronous and uniform opening/closing mode of the radial gate; when Q is in -Q out >Q 0 Adopts No. 1-M radial gate to synchronously and uniformly openClosed mode.
2. The intelligent control method of claim 1, wherein the directly opening, conventionally opening, directly closing, and conventionally closing the radial gate further comprises:
the radial gate is alternately opened and closed;
only one arc gate is operated when the arc gate is automatically opened and closed every time, and the opening and closing period of the arc gate is set to be more than 15 min.
3. The intelligent control method according to claim 2, wherein the radial gate has a meter hole number of 1 to 10, and the principle of automatic opening and closing of the radial gate comprises:
the radial gate of the No. 1 to No. 5 meter hole is a region I, and the radial gate of the No. 6 to No. 10 meter hole is a region II; q in -Q out ≤Q 0 A flood discharge mode that 5 holes in the area I are synchronously and uniformly opened and closed is adopted; q in -Q out >Q 0 And a flood discharge mode that all 10 holes are synchronously and uniformly opened and closed is adopted.
The opening sequence of the radial gate is carried out according to the principle of opening the radial gate at intervals from the middle to the two sides, so that synchronous and uniform opening is realized; the closing sequence of the radial gate is carried out according to the principle that the two sides are closed at intervals and then the middle is closed.
4. The intelligent control method according to claim 3, wherein the radial gate is opened in a gradient of 1m, the priority is highest when the radial gate has the smallest opening, and if the radial gates having the smallest opening are at the same gradient, the priorities are selected in the order of the radial gate with the front hole 3 → 4 → 2 → 5 → 1 → 8 → 9 → 7 → 10 → 6 so as to satisfy the door opening principle of "open with the interval of the front middle and the back two sides".
5. The intelligent control method according to claim 3, wherein the closing of the radial gate is performed step by step with a gradient of 1m, the highest priority is given when the radial gate has the largest opening, and if the radial gates having the largest opening are on the same gradient, the priorities are selected in the order of the radial gate 6 → 10 → 7 → 9 → 8 → 1 → 5 → 2 → 4 → 3, so as to satisfy the closing rule of "closing with interval between two sides and middle.
6. The intelligent control method according to claim 2, wherein the opening and closing of the radial gate comprises:
the opening and closing conditions of the radial gate comprise: the radial gate is at a remote position, the oil pump is not abnormal, the pressure of the hydraulic system is not abnormal, the hose with the rod cavity is not broken, the oil filter of the hydraulic system is not blocked, the oil level and the oil temperature of the hydraulic system are not abnormal, the signal and control power supply are not abnormal, the control PLC is not abnormal, and the stroke difference of the left cylinder and the right cylinder is less than 10mm;
before the radial gate is rotated, whether the conditions meet the opening and closing requirements or not is judged, and if the conditions do not meet the requirements, the radial gate is forbidden to participate in automatic control rotation.
7. The intelligent control method according to claim 1, wherein:
h max ＝75.36m，h 1 ＝75.35m。
8. the intelligent control method according to claim 1, wherein:
h min ＝75.21m，h 2 ＝75.22m。
9. the intelligent control method according to claim 3, characterized in that:
said Q 0 ＝1700m 3 /s。
10. A computer storage medium having a computer program stored thereon, the program being executable by a processor to perform the steps of a method of integrated reservoir scheduling and hydroelectric power generation as claimed in any of claims 1 to 9.
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