CN111828241A - Early warning system and method for hydropower station unit - Google Patents
Early warning system and method for hydropower station unit Download PDFInfo
- Publication number
- CN111828241A CN111828241A CN202010654727.7A CN202010654727A CN111828241A CN 111828241 A CN111828241 A CN 111828241A CN 202010654727 A CN202010654727 A CN 202010654727A CN 111828241 A CN111828241 A CN 111828241A
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- Prior art keywords
- monitoring
- oil pump
- monitoring module
- oil pressure
- monitoring host
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Classifications
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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
- F03B15/08—Regulating, i.e. acting automatically by speed, e.g. by measuring electric frequency or liquid flow
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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
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/10—Other safety measures
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses an early warning system for a hydropower station unit.A monitoring host acquires real-time oil pressure of a unit speed regulator oil pressure device, and a monitoring module I for monitoring operation and faults of an oil pump of the unit speed regulator oil pressure device, a monitoring module II for monitoring the number of operating units and a monitoring module III for monitoring the number of operating water supply pumps and faults are in signal connection with the monitoring host. The invention also provides an early warning method for the hydropower station unit, which is applied to the early warning system for the hydropower station unit. The invention provides early warning for the accident shutdown caused by the low oil pressure of the oil pressure device of the unit speed regulator, informs operators at the first time, strives for more time for field processing, and reduces the occurrence frequency of the unplanned shutdown of the unit; the invention provides early warning for the accident shutdown caused by overhigh temperature of each unit, informs operating personnel at the first time, strives for more time for field processing and reduces the occurrence frequency of the unplanned shutdown of the unit.
Description
Technical Field
The invention relates to the technical field of hydropower station unit operation, in particular to an early warning system and method for a hydropower station unit.
Background
The hydropower station unit may have part of unplanned shutdown problems, such as a low oil pressure accident of a speed regulator oil pressure device, and the accident shutdown may also be caused when the temperature of bearing bushes at each part of the unit is too high, so that once the unit has the unplanned shutdown, certain losses are caused to the safety production and the operation performance of a company. In order to avoid the problem that part of hydropower station units are unplanned to stop operation as far as possible, the possibility of the accident should be found as early as possible, and an operation attendant should receive related information before the accident as early as possible, so that a certain time is reserved for subsequent field treatment.
The current scheme for dealing with the problems is that when the oil pressure of a hydraulic device of the unit governor is low or the bearing bush temperature of each part of the unit is high, an operator on duty is informed to go to the site for handling, at the moment, the oil pressure of the hydraulic device of the unit governor may continue to be reduced or the bearing bush temperature of each part of the unit may continue to be increased, and the unit may be shut down unplanned before the operator goes to the site for handling.
For the hydropower station without person on duty and with little person on duty, after the oil pressure of the hydraulic device of the unit speed regulator is low or the temperature of each tile is high, a person on duty runs to the site to process the hydropower station after receiving the alarm notification, and the time is longer particularly at night.
Disclosure of Invention
The invention aims to solve the problems and provide an early warning system and method for a hydropower station unit.
In order to achieve the above object, the present disclosure provides an early warning system for a hydropower station unit, the early warning system comprising:
the monitoring module I is used for monitoring the operation and the fault of an oil pump of an oil pressure device of the unit speed regulator;
the monitoring module II is used for monitoring the number of the operating units;
the monitoring module III is used for monitoring the number of the water supply pumps in operation and faults;
monitoring the host; the monitoring host acquires the real-time oil pressure of the oil pressure device, and the monitoring module I, the monitoring module II and the monitoring module III are all in signal connection with the monitoring host.
The utility model also provides an early warning method for hydropower station unit, apply to the above-mentioned early warning system for hydropower station unit, the oil pressure of the oil pressure device of the speed regulator is sent to the monitoring host computer in real time, the monitoring module I monitors the operation of the oil pump and sends the oil pump start signal to the monitoring host computer, the monitoring host computer sets up the start pressure of the oil pump, and compare the start pressure of the oil pump with the real-time oil pressure of the oil pressure device, when the oil pressure of the oil pressure device is lower than the start pressure of the oil pump, the monitoring host computer sends out the alarm signal after delaying time without receiving the oil pump start signal sent by the monitoring; and the monitoring host simultaneously receives the main oil pump fault signal and the standby oil pump fault signal sent by the monitoring module I and then sends out an alarm signal.
The monitoring module II monitors the number of the running units and sends the number to the monitoring host, the monitoring module III monitors the number of the running water supply pumps and sends the number to the monitoring host, the monitoring host compares the number sent by the monitoring module II with the number sent by the monitoring module III, and when the number of the running units sent by the monitoring module II is not equal to the number of the running water supply pumps sent by the monitoring module III, the monitoring host sends an alarm signal after delaying; and the monitoring host simultaneously receives the fault signals of two or more water supply pumps sent by the monitoring module III and then sends out alarm signals.
The invention has the beneficial effects that:
the invention provides early warning for the accident shutdown caused by the low oil pressure of the oil pressure device of the unit speed regulator, informs operators on duty at the first time, strives for more time for field processing, and reduces the occurrence frequency of the unplanned shutdown of the unit;
the invention provides early warning for the accident shutdown caused by overhigh temperature of each unit, informs operators on duty in the first time, strives for more time for field processing and reduces the occurrence frequency of the unplanned shutdown of the unit.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Detailed Description
The following describes in detail specific embodiments of the present disclosure. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.
The hydraulic device of the hydropower station unit speed regulator adopts two oil pumps which are mutually standby and are automatically alternated; the hydropower station unit adopting the centralized water supply mode of the circulating water tank is provided with more water supply pumps than the number of the units, and one water supply pump needs to be started when one unit is started to operate, so that the rest can be done. The invention relates to an early warning system for a hydropower station unit, which comprises:
the monitoring module I is used for monitoring the operation and the fault of an oil pump of an oil pressure device of the unit speed regulator;
the monitoring module II is used for monitoring the number of the operating units;
the monitoring module III is used for monitoring the number of the water supply pumps in operation and faults;
monitoring the host; the monitoring host acquires the real-time oil pressure of the oil pressure device, and the monitoring module I, the monitoring module II and the monitoring module III are all in signal connection with the monitoring host.
Optionally, the oil pump includes a main oil pump and a backup oil pump, the monitoring module I monitors the operation of the main oil pump and the backup oil pump, the starting pressure of the main oil pump is m, the starting pressure of the backup oil pump is n, and m is greater than n.
The invention relates to an early warning method for a hydropower station unit, which is applied to the early warning system for the hydropower station unit, wherein the oil pressure of an oil pressure device of a speed regulator is sent to a monitoring host in real time, a monitoring module I monitors the operation of an oil pump and sends an oil pump starting signal to the monitoring host, the monitoring host sets the starting pressure of the oil pump and compares the starting pressure of the oil pump with the real-time oil pressure of the oil pressure device, and when the oil pressure of the oil pressure device is lower than the starting pressure of the oil pump, the monitoring host sends an alarm signal if the oil pump starting signal sent by the monitoring module I is not received after time; and the monitoring host simultaneously receives the main oil pump fault signal and the standby oil pump fault signal sent by the monitoring module I and then sends out an alarm signal.
The monitoring module II monitors the number u of the running units and sends the number u to the monitoring host, the monitoring module III monitors the number p of the running water supply pumps and sends the number p to the monitoring host, the monitoring host compares the number u and the number p sent by the monitoring module II and the monitoring module III, and when the number u of the running units sent by the monitoring module II is not equal to the number p of the running water supply pumps sent by the monitoring module III, the monitoring host sends an alarm signal after time delay; and the monitoring host simultaneously receives the fault signals of two or more water supply pumps sent by the monitoring module III and then sends out alarm signals.
Optionally, when the real-time oil pressure of the oil pressure device received by the monitoring host is lower than m, and the monitoring host does not receive the start signal of the main oil pump sent by the monitoring module I after delaying, a first-level alarm signal is sent, that is, the main oil pump is not started to operate when the oil pressure of the oil pressure device of the unit governor is lower than m;
when the real-time oil pressure of the oil pressure device received by the monitoring host is lower than n, and the monitoring host does not receive a standby oil pump starting signal sent by the monitoring module I after delaying, a secondary alarm signal is sent, namely that the standby oil pump is not started to run when the oil pressure of the oil pressure device of the unit speed regulator is lower than n;
the monitoring host machine simultaneously receives the fault signals of the main oil pump and the standby oil pump sent by the monitoring module I and then sends a three-level alarm signal that two oil pumps of the oil pressure device of the unit speed regulator simultaneously fail.
Specifically, when u is greater than p and t is delayed, the t is the time when the water supply pump is kept away from timing switching, and the monitoring host sends out an alarm signal of an accident that the temperature of each unit is too high, namely that the current unit running number is greater than the water supply pump running number, the water supply pressure of the running unit is lower and the temperature of each unit is increased;
when u < p, the monitoring host sends out an alarm signal that the cooling water pressure is too high, namely that the water supply pressure of the running units is higher when the number of running units of the current unit is smaller than that of running units of the water supply pump;
the monitoring host machine simultaneously receives the fault signals of the two or more water supply pumps sent by the monitoring module III and then sends out an alarm signal that the two or more water supply pumps simultaneously fail.
The working principle of the invention is as follows:
because the oil pump trouble or the oil pump does not start the direct reason that causes the oil pressure device to have the oil pressure low, when the oil pressure is less than oil pump start pressure and the oil pump does not start, current monitoring host can not send relevant warning, can only send alarm signal when oil pressure of oil pressure device further reduces. The invention monitors whether the oil pump is started or not and faults in real time, and compares the oil pressure with the starting pressure of the oil pump in real time, so that the monitoring host can pre-judge the occurrence of low oil pressure accidents in advance and send out text prompt alarm information and sound alarm before the occurrence of the low oil pressure accidents. The invention provides early warning for the accident shutdown caused by low oil pressure of the oil pressure device of the speed regulator, informs operators on duty at the first time, strives for more time for field processing and reduces the occurrence frequency of the unplanned shutdown of the unit.
When the number of the water supply pumps of the water supply system is not equal to the number of the units, no alarm signal is output by the conventional monitoring host, and the number of the water supply pumps is more than that of the units, so that the water supply pressure of the units is higher; the number of the running water supply pumps is less than that of the running units, the water supply pressure of the running units is low, the temperature of bearing bushes at each part of the units is gradually increased, and the existing monitoring host can output an alarm signal only when the temperature of the bearing bushes is increased to the alarm temperature. The invention monitors the running numbers of the water supply pumps, the running numbers of the units and the faults of the water supply pumps in real time, compares the running numbers of the water supply pumps with the running numbers of the units in real time, and sends out text prompt alarm information and sound alarm when the running numbers of the water supply pumps are not equal to the running numbers of the units and two or more water supply pumps simultaneously have faults. The invention provides early warning for the accident shutdown caused by overhigh temperature of each unit, informs operators on duty in the first time, strives for more time for field processing and reduces the occurrence frequency of the unplanned shutdown of the unit.
Meanwhile, the alarm signals are classified in a centralized control center and a monitoring host of the hydropower station, and a set of sound alarm systems before occurrence of related accidents are respectively configured. When the alarm signal appears, the sound system is started to give out sound alarm, and the operator on duty is reminded at the first time, so that the operator can timely and accurately master the running state of the unit.
It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.
In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.
Claims (4)
1. A early warning system for power station unit, its characterized in that, early warning system includes:
the monitoring module I is used for monitoring the operation and the fault of an oil pump of an oil pressure device of the unit speed regulator;
the monitoring module II is used for monitoring the number of the operating units;
the monitoring module III is used for monitoring the number of the water supply pumps in operation and faults;
monitoring the host; the monitoring host acquires the real-time oil pressure of the oil pressure device, and the monitoring module I, the monitoring module II and the monitoring module III are all in signal connection with the monitoring host.
2. The early warning system for the hydropower station unit as claimed in claim 1, wherein the oil pump comprises a primary oil pump and a backup oil pump, the monitoring module I monitors operation and faults of the primary oil pump and the backup oil pump, the starting pressure of the primary oil pump is m, the starting pressure of the backup oil pump is n, and m is greater than n.
3. The early warning method for the hydropower station unit is characterized by being applied to the early warning system for the hydropower station unit in any one of claims 1 to 2, the oil pressure of a speed regulator oil pressure device is sent to a monitoring host in real time, a monitoring module I monitors the operation of an oil pump and sends an oil pump starting signal to the monitoring host, the monitoring host sets the starting pressure of the oil pump and compares the starting pressure of the oil pump with the real-time oil pressure of the oil pressure device, and when the oil pressure of the oil pressure device is lower than the starting pressure of the oil pump, the monitoring host sends an alarm signal if the oil pump starting signal sent by the monitoring module I is not received after time delay; and the monitoring host simultaneously receives the main oil pump fault signal and the standby oil pump fault signal sent by the monitoring module I and then sends out an alarm signal.
The monitoring module II monitors the number of the running units and sends the number to the monitoring host, the monitoring module III monitors the number of the running water supply pumps and sends the number to the monitoring host, the monitoring host compares the number sent by the monitoring module II with the number sent by the monitoring module III, and when the number of the running units sent by the monitoring module II is not equal to the number of the running water supply pumps sent by the monitoring module III, the monitoring host sends an alarm signal after delaying; and the monitoring host simultaneously receives the fault signals of two or more water supply pumps sent by the monitoring module III and then sends out alarm signals.
4. The early warning method for the hydropower station unit according to claim 3, wherein when the real-time oil pressure of the oil pressure device received by the monitoring host is lower than m, the monitoring host sends out an alarm signal if the monitoring host does not receive a main oil pump starting signal sent by the monitoring module I after delaying;
and when the real-time oil pressure of the oil pressure device received by the monitoring host is lower than n, the monitoring host sends an alarm signal if the monitoring host does not receive a starting signal of the standby oil pump sent by the monitoring module I after time delay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654727.7A CN111828241B (en) | 2020-07-09 | 2020-07-09 | Early warning system for hydropower station unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010654727.7A CN111828241B (en) | 2020-07-09 | 2020-07-09 | Early warning system for hydropower station unit |
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| CN111828241A true CN111828241A (en) | 2020-10-27 |
| CN111828241B CN111828241B (en) | 2022-03-01 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652590A (en) * | 1979-10-05 | 1981-05-11 | Hitachi Ltd | Oil hydraulics apparatus |
| JPS59200096A (en) * | 1983-04-28 | 1984-11-13 | Shibaura Eng Works Co Ltd | Method of controllng number of pumps to be operated |
| CN202203095U (en) * | 2011-08-16 | 2012-04-25 | 四川卓越科技工程有限责任公司 | Technical water supply control system of hydropower station unit |
| CN202215422U (en) * | 2011-08-30 | 2012-05-09 | 成都锐达自动控制有限公司 | Intelligent oil pressure control system for hydroelectric power station governor |
| CN203404016U (en) * | 2013-07-11 | 2014-01-22 | 成都锐达自动控制有限公司 | Head cover drainage intelligent control system of hydropower station |
| CN103713607A (en) * | 2013-12-30 | 2014-04-09 | 中国大唐集团科学技术研究院有限公司 | Circulating water system for thermal power plant and operation method thereof |
| CN105370610A (en) * | 2015-11-30 | 2016-03-02 | 中冶南方工程技术有限公司 | Gas pressuring machine monitoring and protection system |
| CN106374628A (en) * | 2016-10-24 | 2017-02-01 | 江苏峰谷源储能技术研究院有限公司 | Combined turbine power generation and air compression energy storage system |
| CN209621511U (en) * | 2019-03-07 | 2019-11-12 | 广西三聚电力投资有限公司 | A kind of water system of generator unit |
-
2020
- 2020-07-09 CN CN202010654727.7A patent/CN111828241B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652590A (en) * | 1979-10-05 | 1981-05-11 | Hitachi Ltd | Oil hydraulics apparatus |
| JPS59200096A (en) * | 1983-04-28 | 1984-11-13 | Shibaura Eng Works Co Ltd | Method of controllng number of pumps to be operated |
| CN202203095U (en) * | 2011-08-16 | 2012-04-25 | 四川卓越科技工程有限责任公司 | Technical water supply control system of hydropower station unit |
| CN202215422U (en) * | 2011-08-30 | 2012-05-09 | 成都锐达自动控制有限公司 | Intelligent oil pressure control system for hydroelectric power station governor |
| CN203404016U (en) * | 2013-07-11 | 2014-01-22 | 成都锐达自动控制有限公司 | Head cover drainage intelligent control system of hydropower station |
| CN103713607A (en) * | 2013-12-30 | 2014-04-09 | 中国大唐集团科学技术研究院有限公司 | Circulating water system for thermal power plant and operation method thereof |
| CN105370610A (en) * | 2015-11-30 | 2016-03-02 | 中冶南方工程技术有限公司 | Gas pressuring machine monitoring and protection system |
| CN106374628A (en) * | 2016-10-24 | 2017-02-01 | 江苏峰谷源储能技术研究院有限公司 | Combined turbine power generation and air compression energy storage system |
| CN209621511U (en) * | 2019-03-07 | 2019-11-12 | 广西三聚电力投资有限公司 | A kind of water system of generator unit |
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| Publication number | Publication date |
|---|---|
| CN111828241B (en) | 2022-03-01 |
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Effective date of registration: 20201111 Address after: A312, 3rd floor, building 6, fuxingmennei street, Xicheng District, Beijing 100032 Applicant after: HUANENG GROUP TECHNOLOGY INNOVATION CENTER Co.,Ltd. Applicant after: SICHUAN HUANENG BAOXINGHE HYDROPOWER Co.,Ltd. Address before: No. 113, middle section of Qingyijiang Road, Yucheng District, Ya'an City, Sichuan Province 625000 Applicant before: SICHUAN HUANENG BAOXINGHE HYDROPOWER Co.,Ltd. |
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Address after: No.113, middle section of Qingyijiang Road, Yucheng District, Ya'an City, Sichuan Province Applicant after: SICHUAN HUANENG BAOXINGHE HYDROPOWER Co.,Ltd. Applicant after: Huaneng Group Technology Innovation Center Co., Ltd Address before: A312, 3F, building 6, fuxingmennei street, Xicheng District, Beijing 100032 Applicant before: HUANENG GROUP TECHNOLOGY INNOVATION CENTER Co.,Ltd. Applicant before: Sichuan Huaneng Baoxinghe hydropower Co., Ltd |
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