CN110889641A - System and method for measuring and calculating pumped power generation capacity of pumped storage power station and storage medium - Google Patents

Abstract

The invention belongs to the technical field of pumped storage power stations, and particularly relates to a pumped storage power station pumped power generation capacity measuring and calculating system, method and storage medium. The invention is characterized in that a water inlet and a water outlet of an upper reservoir of a pumped storage power station are connected with an upper reservoir water level gauge, a power measuring module of a generator motor is connected with a current transformer at an outlet of the generator motor and a voltage transformer at an outlet of the generator motor, and the power measuring module of the generator motor and the upper reservoir water level gauge of the pumped storage power station are sequentially connected with a protocol converter, a data acquisition unit, an optical fiber network, a switch and a computer through communication interfaces. The method and the device can quickly complete the measurement and calculation of the pumped storage power station pumped generation capacity on the premise of ensuring the analysis accuracy by means of the high efficiency of the computer, are beneficial to improving the safe and economic operation level of the power system, and quickly and accurately master the pumped storage power generation capacity of each pumped storage power station.

Description

System, method and storage medium for measuring pumped power generation capacity of pumped storage power station

technical field

The invention belongs to the technical field of pumped-storage power stations, and in particular relates to a system, method and storage medium for measuring the pumped power generation capacity of a pumped-storage power station, which are suitable for power grid dispatching and the work of the operation management department of the pumped-storage power station, and can quickly and accurately grasp each pumped power generation capacity. The pumped water power generation capacity of the energy storage power station.

Background technique

With the development of new energy sources such as UHV, nuclear power, wind power, photovoltaics, etc., the demand for pumped storage power stations in the power system is getting higher and higher. , the level of economic operation. At present, each pumped-storage power station usually estimates the pumped power generation capacity of the pumped-storage power station by using the storage capacity of the upper reservoir and the amount of water consumed or absorbed per unit kilowatt of the pumped-storage power station. The calculation workload of the method is large, the work efficiency is low and the accuracy is low, which greatly hinders the power grid dispatching and the operation management department of the pumped storage power station to grasp the pumped power generation capacity of the pumped storage power station.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the above-mentioned prior art, the present invention provides a system, method and storage medium for measuring and calculating the pumped power generation capacity of a pumped storage power station. The purpose is to provide a calculation system that can quickly complete the calculation of the pumped power generation capacity of the pumped storage power station under the premise of ensuring the accuracy of the analysis, and help to improve the safety and economic operation level of the power system. and methods.

The technical scheme adopted by the present invention to solve its technical problems is:

The pumped power generation capacity measurement system of the pumped storage power station, the inlet and outlet of the upper reservoir of the pumped storage power station are connected to the water level gauge of the upper reservoir, the generator motor power measurement module is connected to the generator motor outlet current transformer and the generator motor outlet voltage transformer, and the generator motor power measurement module and The water level gauge of the upper reservoir of the pumped-storage power station is sequentially connected with the protocol converter, the data collector, the optical fiber network, the switch and the computer through the communication interface.

The generator motor outlet current transformer and generator motor outlet voltage transformer are specifically connected to the generator motor outlet busbar of the pumped storage power station to measure the phase current and line voltage of the generator motor outlet busbar.

The upper reservoir water level gauge is used to measure the water level of the upper reservoir; the generator motor power measurement module calculates the power of the generator motor according to the collected phase current and line voltage of the generator motor outlet bus.

The computer runs the pumped-storage power station pumped power generation capability measurement software, and collects the water level of the upper reservoir of the pumped-storage power station and the power of the generator motor in real time.

The data collected by the generator motor power measurement module and the water level gauge of the upper reservoir of the pumped-storage power station are transmitted to the computer through the communication interface, the protocol converter, the data collector, the optical fiber network and the switch.

The pumped power generation capacity measurement system of the pumped storage power station includes the following modules: a data block, a calculation block and a page control block; wherein: the data block is used to store the collected corresponding upper reservoir water level data, operating hours, and the total number of units. Power data group; the page control block is used to transfer the data collection that needs to be calculated to the calculation block; the calculation block is used to calculate the upper reservoir water level, remaining operating hours and power fitting calculation formula according to the collected big data, and according to the page control block The transferred data calculates the remaining operating hours.

The method for calculating the pumped power generation capacity of a pumped storage power station includes the following steps:

Step 1. Enter the current water level;

Step 2. Enter the target water level;

Step 3. Enter the power of a single unit.

Step 4. The pumping capacity measurement software of the pumped-storage power station is based on the collected water level of the upper reservoir of the pumped-storage power station and the power of the generator motor, and the database automatically measures the current power of the unit from the current water level to the target water level. Single or multiple units generate power at the same time or the time the pumping runs.

In the method for calculating the pumped power generation capacity of the pumped-storage power station, when the unit is generating power, the data of the generating unit's power-generating operation time in the interval from the highest operating water level to the lowest operating water level of the upper reservoir of the pumped-storage power station is recorded every 0.5m;

During the pumping operation of the unit, the data of the pumping operation time of the unit between the lowest operating water level and the highest operating water level of the upper reservoir of the pumped-storage power station are recorded every 0.5m;

The calculation of the relationship between the pumped-storage power station unit and the water level of the upper reservoir is performed by using the mathematical method of discrete analysis, and the calculation model of the relationship between the power generation or pumping operation of the pumped-storage power station unit and the water level of the upper reservoir is obtained as The underlying data of the pumping capacity measurement software of the pumped storage power station;

The pumping capacity measurement software of the pumped-storage power station stores the data of the relationship between the unit of the pumped-storage power station and the water level of the upper reservoir during power generation or pumping operation.

A device for measuring pumped power generation capacity of a pumped-storage power station includes a processor and a memory for storing instructions executable by the processor; the processor is configured to use the method for measuring the pumped power generation capacity of a pumped-storage power station.

A computer storage medium storing a computer program on the computer storage medium, when the computer program is executed by a processor, implements the aforementioned method for measuring the pumped power generation capacity of a pumped-storage power station.

The present invention has the following advantages and beneficial technical effects:

The invention relates to a system and method for calculating the pumped power generation capacity of a pumped-storage power station, which can quickly complete the work of measuring the pumped power generation capacity of a pumped-storage power station with the help of the high efficiency of a computer, and under the premise of ensuring the accuracy of analysis, and It helps to improve the safe and economical operation level of the power system. The invention is suitable for power grid dispatching and operation management departments of pumped storage power stations, and can quickly and accurately grasp the pumped power generation capacity of each pumped storage power station.

Description of drawings

In order to facilitate the understanding and implementation of the present invention by those of ordinary skill in the art, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The following examples are used to illustrate the present invention, but it should be understood that the protection scope of the present invention is not limited by specific Implementation limitations.

Fig. 1 is the overall structure block diagram of the present invention;

Fig. 2 is the measurement model diagram of the relationship between the pumped-storage power station unit and the water level of the upper reservoir during the power generation operation of the present invention;

Fig. 3 is the measurement model diagram of the relationship between the pumped storage power station unit and the water level of the upper reservoir in the present invention;

Fig. 4 is the power generation capacity measurement interface of the system of the present invention;

Fig. 5 is an interface for measuring the pumping capacity of the system of the present invention.

In the figure: computer 1, switch 2, optical fiber network 3, data collector 4, protocol converter 5, communication interface 6, upper reservoir water level gauge 7, generator motor power measurement module 8, generator motor outlet voltage transformer 9, generator motor Outlet current transformer 10.

Detailed ways

Example 1

The invention relates to a system, method and storage medium for measuring the pumped power generation capacity of a pumped-storage power station. Specifically, the water level gauge installed at the water inlet and outlet of the upper reservoir of the pumped-storage power station is used to collect and record the water level of the upper reservoir of the pumped-storage power station and the power generation of the unit. Big data on the relationship between pumping operation time, statistical analysis of the time for the unit to continuously generate electricity to the lowest power generation water level in the upper reservoir and the time for continuous pumping operation to the highest water level of the upper reservoir at any water level, and create a model of the water level of the upper reservoir and the power generation and pumping operation time of the unit. The mathematical method of discrete analysis is used to correct and formulate the calculation system of the pumping capacity of the pumped storage power station.

As shown in FIG. 1, FIG. 1 is a block diagram of the overall structure of the system of the present invention. The system of the present invention includes: the water level gauge of the upper reservoir of the pumped-storage power station 7, the optical fiber network 3, the data collector 4, the protocol converter 5, the communication interface 6, the generator motor outlet voltage transformer 9, the generator motor outlet current transformer 10, the power generator Motor power measurement module 8, switch 2, computer 1, pumped-storage power station pumped power generation capacity measurement software.

An upper reservoir water level gauge 7 for measuring the water level of the upper reservoir is installed at the water inlet and outlet of the upper reservoir of the pumped storage power station, so as to measure the water level of the upper reservoir.

The generator motor outlet current transformer 10 and the generator motor outlet voltage transformer 9 are installed on the generator motor outlet bus of the pumped storage power station to measure the phase current and line voltage of the generator motor outlet bus.

The generator motor power measurement module 8 calculates the power of the generator motor according to the collected phase current and line voltage of the generator motor outlet bus.

The software for calculating the pumped power generation capacity of the pumped storage power station runs on the computer.

The data collected by the generator motor power measurement module 8 and the upper reservoir water level gauge 7 of the pumped-storage power station are transmitted to the computer 1 through the communication interface 6 , the protocol converter 5 , the data collector 4 , the optical fiber network 3 and the switch 2 .

Computer 1 is installed with a pumped-storage power station pumped power generation capacity measurement software, which collects the water level of the upper reservoir of the pumped-storage power station and the power of the generator motor in real time.

As shown in Table 1, Table 1 is the data content of the bottom layer in the embodiment of the present invention. It takes time for one unit of a power station to generate electricity and run from the 392 water level to the X water level. When the generating set is running, the data of generating running time of the generating set in the interval from the highest operating water level to the lowest operating water level in the upper reservoir of the pumped-storage power station are recorded every 0.5m.

As shown in Table 2, Table 2 is the data content of the bottom layer in yet another embodiment of the present invention. It takes one unit of a power station to pump water from 370.5 water level to X water level. During the pumping operation of the unit, the data of the pumping operation time of the unit from the lowest operating water level to the highest operating water level in the upper reservoir of the pumped-storage power station are recorded every 0.5m.

As shown in Figure 2 and Figure 3, Figure 2 is a measurement model diagram of the relationship between the pumped-storage power station unit in the present invention and the water level of the upper reservoir during power generation operation, Figure 3 is the pumped storage power station unit in the present invention and the upper reservoir Calculation model diagram of the relationship between reservoir water levels. The mathematical method of discrete analysis is used for correction, and the calculation model of the relationship between the power generation or pumping operation of the pumped-storage power station and the water level of the upper reservoir is obtained as the underlying data of the pumping capacity measurement software of the pumped-storage power station.

The pumping capacity measurement software of the pumped-storage power station stores the data of the relationship between the unit of the pumped-storage power station and the water level of the upper reservoir during power generation or pumping operation.

Example 2

The invention is a pumped power generation capacity measurement system of a pumped storage power station, comprising the following modules: a data block, a calculation block and a page control block. Among them, the data block is responsible for storing the collected data of the corresponding upper reservoir water level, operating hours, and the total power of the unit; the page control block is responsible for collecting and transmitting the data that needs to be calculated to the calculation block; the calculation block is responsible for the collected big data. The water level of the upper reservoir, the remaining operating hours and the power fitting calculation formula, and the remaining operating hours are calculated according to the data transmitted by the control block on the page.

Example 3

As shown in Fig. 4 and Fig. 5, Fig. 4 is the power generation capacity measurement interface of the present invention, and Fig. 5 is the water pumping capacity measurement interface of the present invention.

The present invention is a method for measuring the pumped power generation capacity of a pumped-storage power station, comprising a data block, a calculation block and a page control block.

The calculation block performs formula calculation according to water level, power and target water level to obtain the remaining operating hours.

The page control block is responsible for page UI settings, data input and output data of the entire measurement software.

Data blocks, calculation blocks and page control blocks transmit data to each other and work together to complete the calculation function of the entire software.

Example 4

The present invention is a method for measuring the pumped power generation capacity of a pumped storage power station, comprising the following steps:

Step 1. "Current water level" is displayed at the current water level in Figure 4 (5), and the water level can be modified manually.

Step 2. Input "target water level" at the target water level in Figure 4(5).

Step 3. Enter "single unit power" at the single unit power in Figure 4(5).

Step 4. The software can automatically measure the time that a single or multiple units can generate electricity or pump water at the same time between the "current water level" and the "target water level" under the current power of the unit according to the database.

Example 5

Based on the same inventive concept, the present invention also provides a pumped hydroelectric power generation capacity measuring device of the present invention, which includes a processor and a memory for storing instructions executable by the processor.

The processor is configured to use the method for calculating the pumped power generation capacity of the pumped storage power station.

Example 6

A computer storage medium storing a computer program on the computer storage medium, when the computer program is executed by a processor, implements the aforementioned method for measuring the pumped power generation capacity of a pumped-storage power station.

Embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Those of ordinary skill in the art should understand that the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope of the present disclosure, including the claims, is limited to these examples; under the spirit of the present invention, the above embodiments or There may also be combinations between technical features in different embodiments, steps may be carried out in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

Embodiments of the present invention are intended to cover all such alternatives, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Table 1 Time (min) for one generator in a power station to run from water level 392 to water level X

water level 392 391.5 391 390.5 390 389.5 389 388.5 388 time 0 43 83 123 161 198 234 270 306 water level 387.5 387 386.5 386 385.5 385 384.5 384 383.5 time 342 375 408 440 472 504 536 568 600 water level 383 382.5 382 381.5 381 380.5 380 379.5 379 time 632 664 695 724 752 780 808 836 864 water level 378.5 378 377.5 377 376.5 376 375.5 375 374.5 time 892 920 944 968 994 1020 1046 1072 1095 water level 374 373.5 373 372.5 372 371.5 371 370.5 time 1117 1139 1161 1183 1207 1231 1251 1268

Table 2 Time (min) for one unit of a power station to pump water from 370.5 water level to X water level

water level 370.5 371 371.5 372 372.5 373 373.5 374 374.5 time 0 twenty three 47 71 97 123 149 176 203 water level 375 375.5 376 376.5 377 377.5 378 378.5 379 time 230 260 290 320 350 380 410 440 473 water level 379.5 380 380.5 381 381.5 382 382.5 383 383.5 time 506 539 572 605 638 674 710 748 786 water level 384 384.5 385 385.5 386 386.5 387 387.5 388 time 826 866 906 946 986 1026 1068 1110 1152 water level 388.5 389 389.5 390 390.5 391 391.5 392 time 1194 1240 1286 1332 1378 1424 1472 1522

Claims (10)

1. The pumped storage power station pumped power generation capacity measuring and calculating system is characterized in that: an upper reservoir water inlet and outlet of the pumped storage power station is connected with an upper reservoir water level gauge (7), a power generation motor power measurement module (8) is connected with a power generation motor outlet current transformer (10) and a power generation motor outlet voltage transformer (9), and the power generation motor power measurement module (8) and the upper reservoir water level gauge (7) of the pumped storage power station are sequentially connected with a protocol converter (5), a data acquisition unit (4), an optical fiber network (3), a switch (2) and a computer (1) through a communication interface (6).

2. The pumped-storage power station pumped-storage generating capacity measuring and calculating system of claim 1, wherein: the generator motor outlet current transformer (10) and the generator motor outlet voltage transformer (9) are specifically connected to a generator motor outlet bus of the pumped storage power station and are used for measuring phase current and line voltage of the generator motor outlet bus.

3. The pumped-storage power station pumped-storage generating capacity measuring and calculating system of claim 1, wherein: the upper reservoir water level gauge (7) is used for measuring the upper reservoir water level; and the generator motor power measuring module (8) calculates the power of the generator motor according to the collected phase current and line voltage of the outlet bus of the generator motor.

4. The pumped-storage power station pumped-storage generating capacity measuring and calculating system of claim 1, wherein: and the computer (1) runs with pumped storage power station pumped power generation capacity measuring and calculating software, and collects the water level of the upper reservoir of the pumped storage power station and the power of the generator motor in real time.

5. The pumped-storage power station pumped-storage generating capacity measuring and calculating system of claim 1, wherein: the power measuring module (8) of the generator motor and the data collected by the upper reservoir water level gauge (7) of the pumped storage power station are transmitted to the computer (1) through the communication interface (6), the protocol converter (5), the data collector (4), the optical fiber network (3) and the switch (2).

6. The pumped-storage power station pumped-storage generating capacity measuring and calculating system of claim 1, wherein: the system comprises the following modules: the system comprises a data block, a calculation block and a page control block; wherein:

the data block is used for storing the collected corresponding upper reservoir water level data, the running hours and the total power data group of the unit;

the page control block is used for acquiring and transmitting data needing to be calculated to the calculation block;

and the calculation block is used for fitting a calculation formula according to the acquired big data, the reservoir water level, the remaining operation hours and the power, and calculating the remaining operation hours according to the data transmitted by the page control block.

7. The pumped storage power station pumped power generation capacity measuring and calculating method is characterized by comprising the following steps: the method comprises the following steps:

step 1, inputting a current water level;

step 2, inputting a target water level;

and 3, inputting the power of the single unit.

And 4, the pumping and dispatching capacity measuring and calculating software of the pumped storage power station automatically measures the time for simultaneously generating or pumping one or more units from the current water level to the target water level under the current power of the units according to the collected water level of the upper reservoir of the pumped storage power station and the power of the generator motor.

8. The pumped-storage power station pumped-storage power generation capacity measurement method of claim 7, wherein the method comprises the following steps: when the unit generates electricity, recording the data of the unit electricity generation operation time in the interval from the highest operation water level of the upper reservoir to the lowest operation water level of the pumped storage power station at intervals of 0.5 m;

when the unit pumps water, recording the data of the unit pumping operation time in the interval from the lowest operation water level of the upper reservoir to the highest operation water level of the pumped storage power station at intervals of 0.5 m;

the measurement and calculation of the relation between the pumped storage power station unit and the upper reservoir water level during pumped storage operation is carried out by utilizing a mathematical method of discrete analysis to correct, obtain a measurement and calculation model of the relation between the pumped storage power station unit and the upper reservoir water level during power generation or pumped storage operation, and the measurement and calculation model is used as the pumped storage power station pumping and emission capacity measurement and calculation software bottom layer data;

the pumped storage power station pumping capacity measuring and calculating software stores data of the relation between the pumped storage power station unit and the upper reservoir water level during power generation or pumping.

9. The pumped storage power station pumped power generation capacity measuring and calculating device is characterized in that: comprising a processor and a memory for storing processor-executable instructions; the processor is configured to employ the pumped-storage power station pumped-storage power generation capacity estimation method.

10. A computer storage medium, characterized by: the computer storage medium has a computer program stored thereon, and the computer program is executed by a processor to implement the estimation method of the pumped storage power station pumped power generation capacity estimation system.

Images