CN111120195A - Method for dispatching pumped storage unit - Google Patents

Method for dispatching pumped storage unit Download PDF

Info

Publication number
CN111120195A
CN111120195A CN201811273518.7A CN201811273518A CN111120195A CN 111120195 A CN111120195 A CN 111120195A CN 201811273518 A CN201811273518 A CN 201811273518A CN 111120195 A CN111120195 A CN 111120195A
Authority
CN
China
Prior art keywords
water level
reservoir
dispatching
units
storage unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201811273518.7A
Other languages
Chinese (zh)
Inventor
陈云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201811273518.7A priority Critical patent/CN111120195A/en
Publication of CN111120195A publication Critical patent/CN111120195A/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
    • 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
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The invention discloses a method for dispatching a pumped storage unit, which comprises the following steps: 1. detecting real-time water levels of an upper reservoir and a lower reservoir; 2. and (4) adjusting the working condition of the unit according to the real-time water level values of the upper reservoir and the lower reservoir detected in the step (1). According to the pumped storage unit scheduling method, the real-time water level conditions of the reservoir and the lower reservoir are considered, the collected water level values of the upper reservoir and the lower reservoir are compared with the set different gear values of the high level and the low level, different scheduling strategies are set according to different comparison results, the water levels of the upper reservoir and the lower reservoir can be guaranteed to be always at a reasonable level, the peak-adjusting and frequency-adjusting requirements of a power system and the balance between the safety and stable operation of a power plant and the balance between the peace of the surrounding natural environment are met, and a scheduling plan is closer to the reality and is easy to execute.

Description

Method for dispatching pumped storage unit
Technical Field
The invention relates to a method for dispatching a pumped storage unit, in particular to a method for dispatching a pumped storage unit, which can realize balance between power supply and demand and natural environment stability.
Background
The pumped storage unit is used as the key of peak regulation and frequency modulation of a power system, and the safe and stable operation of the pumped storage unit is extremely important. The output degree of a common generator set is only limited by the rated output of the common generator set, and the degree of the power demand of a common load is also only limited by the rated power of the common generator set. However, in actual operation, the pumped-storage group is not only considered to be rated output or power when it is used as a generator or a load, but also influenced by its own construction environment and is also hampered by the reservoir which makes it operate.
The existing dispatching mode is not designed aiming at the characteristics of the pumped storage unit, and the influence of the actual water level on the operation of the pumped storage unit is not considered, so that an unrealizable instruction can be caused, for example, the pumped storage unit is required to generate power, but in practice, because no water resource is available, the pumped storage unit cannot generate power, a command which can possibly cause peripheral flooding can also be caused, for example, the pumped storage unit is required to generate power, but in practice, the water level exceeds the dam due to too much and continuous power generation of stored water, so that the flood of the peripheral environment is caused.
Disclosure of Invention
Therefore, aiming at the problems, the invention provides a pumped storage unit scheduling method, which not only can meet the demand and supply balance of a power system by considering the real-time water level conditions of a reservoir and a lower reservoir, but also can ensure that the water levels of the upper reservoir and the lower reservoir are always at a reasonable level, thereby ensuring the safety of a power plant and simultaneously protecting the surrounding natural ecological environment.
In order to achieve the above object, the present invention provides a method for dispatching a pumped storage group, comprising:
1. detecting the water level;
2. and realizing unit scheduling according to the water level.
According to the invention, by comparing the collected reservoir water level values with the set gear values of different high and low water levels and setting different scheduling strategies according to different comparison results, the balance between meeting the peak and frequency regulation requirements of the power system and the safety and stable operation of the power plant and the balance between the peaceful and low surrounding natural environment is realized, so that the scheduling plan is closer to the reality and is easy to execute.
Drawings
Fig. 1 is a flow chart of a pumped-storage group scheduling method.
Detailed Description
The first embodiment.
Please refer to fig. 1.
A pumped-storage unit dispatching method, the method comprising:
1. detecting the water level;
2. and realizing unit scheduling according to the water level.
The water level refers to the water level of the reservoir. The pumped storage power station has two reservoirs, one is an upper reservoir, and the other is a lower reservoir. The units typically include a plurality of units of varying rated capacity. The water level is measured in various ways, so that the measurement result is accurate, for example, an upper computer water level monitoring system, a hydraulic engineering observation professional network and manual in-situ measurement are adopted.
Example two.
A pumped-storage unit dispatching method, the method comprising:
1. detecting the water level;
1.1, detecting the water level of an upper reservoir to obtain a real-time value U of the water level of the upper reservoir;
1.2 detecting the water level of the lower reservoir to obtain a real-time value L of the water level of the lower reservoir;
2. realizing unit scheduling according to the water level;
2.1, judging whether the real-time value U of the upper reservoir water level is between UH1 and UL1 which are preset, wherein UH1 is the upper reservoir high water level primary alarm water level, UL1 is the upper reservoir low water level primary alarm water level, and if so, realizing that the unit operates in a water pumping working condition or a power generation working condition according to actual scheduling requirements; if not, namely U is more than or equal to UH1 or U is less than or equal to UL1, judging whether the real-time value U of the upper reservoir water level is more than or equal to UH1, if so, implementing step 2.1.1, otherwise, turning to step 2.1.2;
2.1.1, judging whether the real-time value U of the upper reservoir water level is smaller than the upper reservoir high water level middle-level alarm water level UH2, if so, implementing the step 2.1.1.1; if not, judging whether the real-time value U of the upper reservoir water level is smaller than the final upper reservoir high water level alarm water level UHH, if so, implementing step 2.1.1.2; if not, immediately stopping all the units under the water pumping working condition;
2.1.1.1, giving an upper reservoir high water level primary alarm to a dispatching report, paying attention to the number of the units under the water pumping condition, communicating with a dispatching at intervals of a first time period T1, dispatching and issuing a formulated dispatching plan, and controlling the units according to the dispatching plan;
the size of the first time period T1 should be inversely proportional to the number of units under the water pumping condition, i.e. if more units are under the water pumping condition at the same time, more frequent communication with the dispatching unit is required;
the dispatching plan comprises a command for stopping the operation of 1 or more units which are originally in the water pumping working condition and a command for changing the 1 or more units which are originally in the water pumping working condition into the power generation working condition;
2.1.1.2 immediately stopping one machine set which is originally under the water pumping working condition, and then stopping one machine set which is originally under the water pumping working condition every second time period T2 until all the machine sets which are originally under the water pumping working condition stop running;
the size of the second time period T2 should be inversely proportional to the number of the units under the water pumping condition, i.e. if more units are under the water pumping condition at the same time, the units need to be stopped more frequently;
2.1.2, judging whether the real-time value U of the upper reservoir water level is greater than the low water level middle warning water level UL2 of the upper reservoir, if so, implementing a step 2.1.2.1; if not, judging whether the real-time value U of the upper reservoir water level is larger than the ultimate warning water level ULL of the lower reservoir water level, if so, implementing step 2.1.2.2; if not, immediately stopping all the units under the power generation working condition;
2.1.2.1, giving an upper reservoir low water level primary alarm to a dispatching report and paying attention to the number of the units under the power generation working condition, communicating with the dispatching at intervals of a third time period T3, dispatching and issuing a formulated dispatching plan, and controlling the units according to the dispatching plan;
the size of the third time period T3 should be inversely proportional to the number of the units under the power generation condition, that is, if more units are under the power generation condition at the same time, more frequent communication with the dispatching unit is required;
the dispatching plan comprises a command for stopping the operation of 1 or more units originally under the power generation working condition and a command for changing the 1 or more units originally under the power generation working condition into the water pumping working condition;
2.1.2.2 immediately stopping one set under the power generation working condition, and then stopping one set under the power generation working condition every fourth time period T4 until all sets under the power generation working condition stop running;
the size of the fourth time period T4 should be inversely proportional to the number of the units under the power generation condition, that is, if more units are under the power generation condition at the same time, the units need to be stopped more frequently;
2.2, judging whether the real-time value L of the water level of the lower reservoir is between LH1 and LL1 which are preset and not equal to the flood discharge water level, wherein LH1 is the primary alarm water level of the high water level of the lower reservoir, LL1 is the primary alarm water level of the low water level of the lower reservoir, and if yes, realizing that the unit operates in a water pumping working condition or a power generation working condition according to the actual scheduling requirement; if not, namely L is more than or equal to LH1 or L is less than or equal to LL1, judging whether the real-time numerical value L of the water level of the lower reservoir is more than or equal to LH1, if so, implementing step 2.2.1, otherwise, turning to step 2.2.2;
2.2.1, judging whether the real-time numerical value L of the water level of the lower water reservoir is smaller than a high water level middle-level alarm water level LH2 of the lower water reservoir, if so, implementing the step 2.2.1.1; if not, judging whether the real-time value L of the water level of the lower reservoir is smaller than the LHH of the high water level ultimate warning water level of the lower reservoir, if so, implementing the step 2.2.1.2; if not, immediately stopping all the units under the power generation working condition;
2.2.1.1, reporting a primary alarm of the high water level of the lower reservoir to a dispatching report, paying attention to the number of the units under the power generation working condition, communicating with the dispatching at intervals of a fifth time period T5, dispatching and issuing a formulated dispatching plan, and controlling the units according to the dispatching plan;
the size of the fifth time period T5 should be inversely proportional to the number of units in the power generation condition, that is, if more units are in the power generation condition at the same time, more frequent communication with the dispatching unit is required;
the dispatching plan comprises a command for stopping the operation of 1 or more units originally under the power generation working condition and a command for changing the 1 or more units originally under the power generation working condition into the water pumping working condition;
2.2.1.2 immediately stopping one set in the original power generation working condition, and then stopping one set in the original power generation working condition every sixth time period T6 until all sets in the original power generation working condition stop running;
the magnitude of the sixth time period T6 should be inversely proportional to the number of the units under the power generation condition, that is, if more units are under the power generation condition at the same time, the units need to be stopped more frequently;
2.2.2, judging whether the real-time numerical value L of the water level of the lower reservoir is larger than a low water level middle-level alarm water level LL2 of the lower reservoir, if so, implementing the step 2.2.2.1; if not, judging whether the real-time value L of the water level of the lower reservoir is larger than the final low water level warning water level LLL of the lower reservoir, if so, implementing the step 2.2.2.2; if not, immediately stopping all the units under the water pumping working condition;
2.2.2.1 reporting the primary alarm of the low water level of the reservoir to a dispatching report, paying attention to the number of the units under the water pumping working condition, communicating with the dispatching at intervals of a seventh time period T7, dispatching and issuing a formulated dispatching plan, and controlling the units according to the dispatching plan;
the size of the seventh time period T7 should be inversely proportional to the number of units under the water pumping condition, i.e. if more units are under the water pumping condition at the same time, more frequent communication with the dispatching unit is required;
the dispatching plan comprises a command for stopping the operation of 1 or more units which are originally in the water pumping working condition and a command for changing the 1 or more units which are originally in the water pumping working condition into the power generation working condition;
2.2.2.2 stopping the operation of one unit originally under the water pumping working condition immediately, and stopping the operation of one unit originally under the water pumping working condition every eighth time period T8 until all units originally under the water pumping working condition stop operating;
the size of the eighth time period T8 should be inversely proportional to the number of units in the pumping condition, i.e. if there are more units in the pumping condition, the units need to be stopped more frequently.
Example three.
The difference from the second embodiment is that when the operation of a unit originally in the water pumping/power generating working condition is immediately stopped, the unit with the maximum rated capacity needs to be selected for realization.
It should be noted that the above-mentioned embodiments are provided for further detailed description of the present invention, and the present invention is not limited to the above-mentioned embodiments, and those skilled in the art can make various modifications and variations on the above-mentioned embodiments without departing from the scope of the present invention.

Claims (6)

1. A method for dispatching a pumped-storage unit is characterized by comprising the following steps:
1. detecting the water level;
2. and realizing unit scheduling according to the water level.
2. The pumped-storage group dispatching method according to claim 1, wherein the water level in step 1 is a water level of a reservoir.
3. The pumped-storage group dispatching method of claim 2, wherein the reservoirs comprise an upper reservoir and a lower reservoir.
4. The pumped-storage group dispatching method of claim 3, wherein the groups comprise more than 2 groups with different rated capacities.
5. The pumped-storage unit dispatching method as claimed in claim 4, wherein the detection of the water level is realized by an upper computer water level monitoring system.
6. The pumped-storage group dispatching method as claimed in claim 5, wherein the detection of water level is further implemented by using a hydraulic observation professional network.
CN201811273518.7A 2018-10-30 2018-10-30 Method for dispatching pumped storage unit Withdrawn CN111120195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811273518.7A CN111120195A (en) 2018-10-30 2018-10-30 Method for dispatching pumped storage unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811273518.7A CN111120195A (en) 2018-10-30 2018-10-30 Method for dispatching pumped storage unit

Publications (1)

Publication Number Publication Date
CN111120195A true CN111120195A (en) 2020-05-08

Family

ID=70484003

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811273518.7A Withdrawn CN111120195A (en) 2018-10-30 2018-10-30 Method for dispatching pumped storage unit

Country Status (1)

Country Link
CN (1) CN111120195A (en)

Similar Documents

Publication Publication Date Title
US9997922B2 (en) Method for feeding electrical power into an electrical supply network
CN103556664B (en) A kind of bull-dozer fault automatic protecting method and system
US20160336888A1 (en) Method and regulation and/or control device for operating a wind turbine and/or a wind park, and wind turbine and wind park
US11322941B2 (en) Method for controlling ESS output
US9458828B2 (en) Controlling wind power plant with negative power capability to respond to grid frequency instability
CN109066726B (en) Frequency safety emergency coordination optimization control method integrating multiple measures
CN108374747B (en) Pumped storage control method for allocating new energy power generation system
AU2013292247A1 (en) Method for controlling a wind farm
AU2014257936A1 (en) Method for controlling a wind park
JP2015162997A (en) Power system monitoring device, power system controller and power system monitoring method
KR20190033620A (en) Wind turbine control method and system
CN107394790B (en) Power supply for coping with load off-line impact and considering unit adjusting capacity and load emergency control method
CN105226700A (en) Based on primary frequency modulation control method and the device of valve flow characteristic dynamic conditioning
CN107516904B (en) Accurate load control method for coping with power supply off-line impact and considering unit adjusting capacity
JP2017175908A (en) Power generation control device and control method
CN102508011A (en) Overvoltage and no-voltage detection circuit and testing device
CN111120195A (en) Method for dispatching pumped storage unit
Eilenberger et al. Modern voltage regulation methods for network planning and operation in low voltage grids
CN111120188A (en) Stable controller for pumped storage unit
CN108005843B (en) A kind of pump-storage generator dispatching method
CN108054788B (en) A kind of peak load shifting apparatus control method
CN108374748B (en) Stable operation control system for pumped storage unit
CN110021951B (en) Security control design method and system for multi-direct-current feed-in receiving-end extra-high voltage ring network
Michaud et al. Flatness-based control of an hydro power plant
Pratama et al. Operational Road Map in North Sulawesi and Gorontalo Power Grid Considering the Intermittent Photovoltaic Penetration

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20200508

WW01 Invention patent application withdrawn after publication