Startup and shutdown simulation model of hydroelectric generating sets with different frequency modulation capacities in frequency modulation market
A technology of frequency regulation capacity and simulation model, applied in the direction of design optimization/simulation, electrical components, circuit devices, etc., can solve problems such as start-up and shutdown, large secondary frequency regulation capacity, economic benefits or adverse effects on equipment safety, etc., to reduce the burden, The effect of reducing the amount of calculation
Active Publication Date: 2020-12-15
HUANENG LANCANG RIVER HYDROPOWER
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Problems solved by technology
Since the adjustable capacity of the secondary frequency regulation of the power station is objectively constrained by complex conditions such as the number of units available in the power station (including generating units and standby units), planned active power set value, generating water head, and dynamic combination of operating areas, so if the power station When participating in the bidding of the frequency regulation market, if the declared secondary frequency regulation capacity is too large, it is very likely that the secondary frequency regulation will not be available, the units frequently pass through the vibration area, too many units operate in the restricted operation area for a long time, frequent start-up and shutdown, etc. Serious adverse effects on economic benefits or equipment safety
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[0028]The present invention will be described in further detail below in conjunction with the accompanying drawings, which are explanations rather than limitations of the present invention.
[0029] see figure 1 , a simulation model of start-up and shutdown of hydropower units with different frequency regulation capacities in the frequency regulation market. The simulation parameters received by the simulation model include: at each time point, the units that are equipped with the function of intelligent start-up and shutdown, the priority of start-up and shutdown of the units, and the operating areas of each unit. Range and planned active power settings;
[0030] Based on the operating status of all units that are currently put into intelligent start-up and shutdown, change the operating condition of a unit after the start-stop state is used as a start-stop strategy;
[0031] According to the active power planning curve, the planned active power set value is generated at fix...
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The invention discloses a startup and shutdown simulation model for hydroelectric generating sets with different frequency modulation capacities in the frequency modulation market, which is based on the running state of the current set and respectively compares the running state with various running conditions after one set is started or stopped, thereby avoiding the problem of excessive divergence of a solving range, and assuming that k sets are put into an intelligent startup and shutdown function, and only k + 1 working conditions (k working conditions in which one of the k units changes the startup and shutdown states in sequence and the working conditions in which all the units do not change the startup and shutdown states) are compared. On one hand, in the actual power generation operation work, the unit can be automatically started and stopped, and the burden of operators is reduced; and on the other hand, different assumed frequency modulation capacities can be used as secondary frequency modulation adjustable capacities, and simulation intelligent startup and shutdown operation is carried out by utilizing the model to generate a simulation time sequence state of startup and shutdown of the unit.
Description
technical field [0001] The invention relates to the technical field of hydroelectric power generation automation, and relates to a start-stop simulation model of hydroelectric units with different frequency modulation capacities in the frequency modulation market. Background technique [0002] At present, most of the unit start-up and shutdown operations of hydropower stations are automatically completed by the programmable logic controller (PLC) of the local control unit (LCU) of the computer monitoring system through a preset sequence control process without human intervention. The automatic startup and shutdown function greatly reduces the workload of operators, eliminates the possibility of human error, and improves the success rate of startup and shutdown. However, operators still need to manually trigger the startup process or shutdown process, so there are the following problems: [0003] 1) The remote centralized control of multiple hydropower stations through the ba...
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Patent Timeline
Login to View More IPC IPC(8): G06F30/20H02J3/46H02J3/48G06F113/04
CPCG06F30/20H02J3/48H02J3/466H02J2203/20G06F2113/04Y04S10/50
Inventor 胡林
Owner HUANENG LANCANG RIVER HYDROPOWER