KR102577362B1 - Apparatus and method for measuring hydroelectric generator efficiency - Google Patents

Abstract

The present invention relates to an apparatus and method for measuring the efficiency of a hydroelectric generator. More specifically, the loss required when calculating the efficiency of a hydroelectric generator is divided into the reference surface loss generated from the reference surface of the hydroelectric generator and the friction portion loss generated from the friction portion of the hydroelectric generator. It can be set by inputting parameters according to the characteristics of the cooling method and fluid type according to the type of hydroelectric generator, and calculate the total loss due to the heat loss from the friction area reflecting the heat loss from the reference surface and the characteristics of the cooling method and type of fluid. It relates to a hydroelectric generator efficiency measurement device and method for calculating the efficiency of a hydroelectric generator.

Description

Apparatus and method for measuring hydroelectric generator efficiency}

The present invention relates to an apparatus and method for measuring the efficiency of a hydroelectric generator. More specifically, the loss required when calculating the efficiency of a hydroelectric generator is divided into the reference surface loss occurring on the reference surface of the hydroelectric generator and the friction portion loss occurring in the friction portion of the hydroelectric generator. It can be set by inputting parameters according to the characteristics of the cooling method and fluid type according to the type of hydroelectric generator, and calculate the total loss due to the heat loss from the reference surface and the heat loss from the friction area reflecting the characteristics of the cooling method and fluid type. It relates to a hydroelectric generator efficiency measurement device and method for calculating the efficiency of a hydroelectric generator.

A hydroelectric generator uses a turbine to convert the potential energy of water into the kinetic energy of the turbine, and converts the kinetic energy of the turbine into electrical energy of the generator to produce electricity.

The price of such a hydroelectric generator is an expensive facility ranging from hundreds of millions to tens of billions, and its performance is determined by the efficiency (η) of the hydroelectric generator defined as in Equation 1 below. Typically, the performance of a hydroelectric generator is defined as the ratio of input energy and output energy.

Here, P ₁ is the input energy excluding excitation energy from a separate source, P ₂ is the energy produced as output energy, P _1E is the excitation energy, and P _T is the total loss energy (also called “power”). .

Output energy can be easily measured through current measurement, but input energy is very difficult to measure because the types of losses are very diverse.

In order to measure the efficiency of a hydroelectric generator, the energy lost must be measured, and IEC 60034-2-1 suggests instrumental methods, deceleration methods, and calorimetric methods. Among these, the calorimetry method estimates loss by measuring the heat generated from the device under test, that is, a hydroelectric generator, and is the only method that can measure the total loss among the various measurement methods described above.

Therefore, general efficiency measurement equipment for hydroelectric generators calculates efficiency by applying a calorimetric method that can obtain measured values through many measuring instruments targeting the bearings and thermal interfaces of the hydroelectric generator to measure losses.

However, hydroelectric generators have different cooling methods and fluid types at the bearing and interface depending on the manufacturer and type of water turbine, making it difficult to measure the efficiency of various types of hydroelectric generators with a single test equipment.

For this reason, most power generation companies request efficiency measurement tests from hydropower generator manufacturers, so there is a problem in that the reliability of the results cannot be guaranteed due to the manufacturer's self-test evaluation.

Therefore, there is a need for the development of a hydroelectric generator efficiency measurement device that provides highly reliable efficiency measurement information through independent testing that is not dependent on the hydroelectric generator manufacturer and can measure efficiency for various types of hydroelectric generators in a single unit. .

Republic of Korea Patent No. 10-2069997 (announced on January 23, 2020)

Therefore, the purpose of the present invention is to divide the loss required when calculating the efficiency of a hydroelectric generator into a reference surface loss occurring on the reference surface of the hydroelectric generator and a friction loss occurring in the friction part of the hydroelectric generator, and to add a measuring instrument to be installed on the reference surface and the friction part. and is easy to delete, and can be set by inputting parameters according to the characteristics of the cooling method and fluid type according to the type of hydroelectric generator, and the total loss due to the heat loss from the reference surface and the heat loss from the friction part that reflects the characteristics of the cooling method and fluid type. To provide a hydroelectric generator efficiency measurement device and method for calculating the efficiency of a hydroelectric generator by calculating .

The hydroelectric generator efficiency measurement device according to the present invention for achieving the above object is: a reference surface loss factor measurement device including two or more reference surface loss factor meters that are installed on a reference surface corresponding to the type of hydroelectric generator and measure and output the reference surface loss factor. A loss measuring unit including a friction unit loss element measurement unit installed in the friction unit corresponding to the type of unit and hydroelectric generator and including two or more friction unit loss factor measuring devices that measure and output the friction unit loss factor; an input/output unit that provides a user interface means to the user, provides information through the user interface means, and receives information through the user interface means; Information on the installation location of the reference surface loss factor measuring instrument that measures the reference surface loss factor according to the type of hydroelectric generator, information on the reference surface loss factor for each reference surface loss factor measuring device, and information on the installation location of the friction loss factor measuring device that measures the loss factor in the friction area and friction loss factor. a storage unit that stores friction loss element information for each element measuring device and stores fluid characteristic information and reference surface area information input through the input/output unit; and exciter power consumption, lubricant circulation pump power consumption, and generator output power, and obtain fluid characteristic information and reference surface area information corresponding to the type of hydroelectric generator through the input/output unit and store them in the storage unit, and obtain the fluid characteristic information. Friction loss power (P _irs2 ) calculated from measurements of the friction loss element considering the reference surface loss power (P _irs1 ) calculated from measurements of the reference surface loss element taking into account the reference surface area information. ) and the driving unit power consumption (P _ers ), which is calculated by adding the exciter power consumption and the lubricant circulation pump power consumption, to calculate the total power consumption (P _T ), and calculate the total power consumption and the generator output power. It is characterized by including a control unit that calculates the generator efficiency and outputs it through the input/output unit.

The control unit provides a user interface means for inputting the fluid characteristic information and reference surface information through the input/output unit, receives the fluid characteristic information and reference surface information through the user interface means, stores the fluid characteristic information and reference surface information in the storage, and manages it. a user interface unit; a data acquisition unit that acquires measured values for the friction loss element and the reference surface loss element from the loss measuring unit, and obtains and outputs exciter power consumption, lubricant circulation pump power consumption, and generator output power; and friction loss power (P _irs2 ) calculated from measurements of the friction loss element in consideration of the fluid characteristic information, and a reference surface calculated from measurements of the reference surface loss element in consideration of the reference surface area information. The total power consumption (P T ) is calculated by adding the power loss (P _irs1 ) and the power consumption of the driving unit (P _ers ) calculated by adding the power consumption of _the exciter and the power consumption of the lubricant circulation pump, and the total power consumption and It is characterized by comprising an efficiency calculation unit that calculates generator efficiency by applying the generator output power and outputs it through the input/output unit.

The efficiency calculation unit includes a reference surface loss calculation unit that calculates and outputs reference surface loss power (P _irs1 ) for the reference surface by applying the reference surface area information and measured values for the reference surface loss element; a friction loss calculation unit that calculates and outputs friction loss power (P _irs2 ) by applying the fluid characteristic information and measurement values for the friction loss factors; A power consumption calculation unit that adds the power consumption of the exciter and the power consumption of the lubricant circulation pump obtained through the data acquisition unit to calculate and output the power consumption of the driving unit (P _ers ); a machine loss calculation unit that calculates and outputs machine loss power (P _irs ) by adding the reference surface loss power and the friction portion loss power; a total loss calculation unit that calculates and outputs total loss power (P _T ) by adding the driving unit power consumption (P _ers ) and the machine loss power (P _irs ); It is characterized by comprising a generator efficiency calculation unit that calculates generator efficiency by applying the total loss power and generator output power and outputs the generator efficiency through the input/output unit.

The control unit provides information on the installation location of the reference surface loss element measuring device that measures the reference surface loss factor to be installed depending on the type of generator, reference surface loss factor information for each reference surface loss factor measuring device, and installation location of the friction loss element measuring device that measures the friction loss element. A generator setting user interface means for inputting loss factor information including friction loss factor information and friction loss factor information for each measuring device is provided to the input/output unit through the user interface unit, and a generator setting user interface unit is provided for inputting loss factor information including friction loss element information for each device, and the generator setting user interface unit is provided for inputting loss factor information including friction loss element information for each device. It further includes a generator setting unit that receives information and stores it in the storage unit to set loss factor information for the hydroelectric generator to be tested.

The reference surface loss calculation unit outputs an average of the measured values for each reference surface among the measured values output from the reference surface loss factor measuring devices, and is paired with a reference surface loss factor measuring device that measures the temperature of a preset reference surface and the reference surface loss factor measuring device. an average value calculation unit that calculates and outputs the average value of temperature differences by a reference surface loss element measuring device that measures the surrounding temperature; And the forced convection loss (P _fc ), which is a loss occurring to the reference surface, is calculated by applying the air characteristics and the reference surface characteristics among the average values and the fluid characteristic information, and calculating the air characteristics and the temperatures of the upper and lower reference surfaces, respectively. After calculating the natural convection loss (P _nc ) by applying the average temperature difference of the surrounding air, the cooler discharge heat calculation unit calculates and outputs the reference surface loss power (P _irs1 ) by adding the forced convection loss and the natural convection loss. Do it as

The friction loss calculation unit increases the lubricant by reflecting the measured value input from the friction loss component measurement device installed at the thrust bearing lubricant inlet and outlet among the friction loss component measurement devices and the characteristic information about the lubricant among the fluid characteristic information. A lubricant increased heat calculation unit that calculates and outputs the heat amount; Coolant that calculates and outputs the increased heat of the coolant by reflecting the measurement values input from the friction loss element measuring device installed at the thrust bearing coolant inlet and outlet among the friction loss element measuring devices and the characteristic information about the coolant among the fluid characteristic information. Increased calorie calculation unit; a bearing loss heat calculation unit that calculates and outputs thrust bearing heat loss (power) by adding the increased heat of the lubricant and the increased heat of the coolant; Among the friction loss factor measuring devices, the upper bearing loss heat amount is calculated and output by reflecting the measured value input from the friction loss factor measuring device installed at the upper bearing lubricant inlet and outlet and the characteristic information about the lubricant among the fluid characteristic information. Bearing loss calculation unit; Among the friction loss element measuring devices, the lower bearing loss heat amount is calculated and output by reflecting the measured value input from the friction loss element measuring device installed at the lower bearing lubricant inlet and outlet and the characteristic information about the lubricant among the fluid characteristic information. Bearing loss calculation unit; And an addition unit that calculates frictional power loss (P _irs2 ) by adding the thrust bearing heat loss, upper bearing heat loss, and lower bearing heat loss and outputs the result to the mechanical loss calculation unit.

The reference surface loss factors are temperature and wind speed, and the friction part loss factors are the flow rate and temperature of coolant and lubricant.

The reference surface information includes the upper and lower areas and windage area of the hydroelectric generator, and the fluid characteristic information includes gas characteristics for air, including convective heat transfer coefficient, lubricant density and specific heat, coolant density and specific heat, and air density and specific heat. It is characterized by including.

The method for measuring the efficiency of a hydroelectric generator according to the present invention to achieve the above object is: information on the installation location of the reference surface loss element measuring device that measures the reference surface loss factor according to the type of hydroelectric generator, reference surface loss factor information for each reference surface loss factor measuring device, and friction. Hydraulic power including a storage unit that stores information on the installation location of the friction loss element measuring device that measures the minor loss element and friction loss element information for each friction loss element measuring device, and stores fluid characteristic information and reference surface area information input through the input/output unit. In the efficiency measurement method of a power plant efficiency measurement device, a control unit provides a user interface means for inputting the fluid characteristic information and reference surface information to an input/output unit through the user interface unit, and the fluid characteristic information and reference surface information are provided through the user interface means. The input value acquisition process of receiving reference surface information and storing and managing it in the storage unit; The control unit acquires the measured value of the friction part loss element and the measured value of the reference surface loss element from the loss measuring unit through the data acquisition unit, and obtains the exciter power consumption, the lubricating oil circulation pump power consumption, and the generator output power. Output data acquisition process; And the friction part loss power (P _irs2 ) calculated by the control unit from the measured values for the friction part loss element in consideration of the fluid characteristic information through the efficiency calculation unit, and the reference surface loss element in consideration of the reference surface area information. Calculate _the total power consumption (P T ) by adding the reference plane loss power (P _irs1 ) calculated from the measured values and the drive unit power consumption (P _ers ) calculated by adding the exciter power consumption and the lubricant circulation pump power consumption. and an efficiency calculation process of calculating generator efficiency by applying the total power consumption and the generator output power and outputting the generator efficiency through the input/output unit.

In the efficiency calculation process, the efficiency calculation unit of the control unit applies the reference surface area information and the measured value of the reference surface loss element through the reference surface loss calculation unit to calculate and output the reference surface loss power (P _irs1 ) for the reference surface. loss calculation step; A friction loss calculation step in which the efficiency calculation unit calculates and outputs friction loss power (P _irs2 ) by applying the fluid characteristic information and measured values for the friction loss element through the friction loss calculation unit; A power consumption calculation step in which the efficiency calculation unit calculates and outputs power consumption of the driving unit (P _ers ) by adding the power consumption of the exciter and the power consumption of the lubricant circulation pump obtained through the data acquisition unit through the power consumption calculation unit; A machine loss calculation step in which the efficiency calculation unit calculates and outputs machine loss power (P _irs ) by adding the reference surface loss power and the friction part loss power through the machine loss calculation unit; A total loss calculation step in which the efficiency calculation unit calculates and outputs total loss power (PT) by adding the driving unit power consumption (P _ers ) and the machine loss power (P _irs ) through the total loss calculation unit; The efficiency calculation unit calculates the generator efficiency by applying the total loss power and the generator output power through the generator efficiency calculation unit and outputs the generator efficiency calculation step through the input/output unit.

The method is: the control unit, through the generator setting unit, measures the installation location information of the reference surface loss element measuring device that measures the reference surface loss element to be installed according to the type of generator, the reference surface loss element information for each reference surface loss element measuring device, and the friction part loss factor. A generator setting user interface means for inputting loss element information including installation location information of the friction loss element measuring device and friction loss element information for each friction loss element measuring device is provided to an input/output unit through the user interface unit, and the generator The method further includes a generator setting process of receiving loss factor information through a setting user interface means and storing it in the storage unit to set loss factor information for a hydroelectric generator to be tested.

In the reference surface loss calculation step, the reference surface loss calculation unit outputs an average of the measured values for each reference surface among the measured values output from the reference surface loss element measuring devices through the average value calculation unit, and measures the temperature of the preset reference surface. An average value calculation step of calculating and outputting an average value of temperature differences by a measuring device and a reference surface loss element meter that is paired with the reference surface loss element meter and measures the surrounding temperature; And the reference surface loss calculation unit applies air characteristics and reference surface characteristics among the average values and the fluid characteristic information through the discharge heat calculation unit to calculate forced convection loss (P _fc ), which is a loss occurring with respect to the reference surface, and air characteristics. After calculating the natural convection loss (P _nc ) by applying the average temperature difference between the temperature of each of the upper and lower reference planes and the surrounding air, the forced convection loss and natural convection loss are added to calculate the reference plane loss power (P _irs1 ) and output. It is characterized in that it includes a step of calculating the amount of heat discharged from the cooler.

The friction loss calculation process includes the measurement values input from the friction loss factor measuring device installed at the thrust bearing lubricant inlet and outlet of the friction loss factor measuring device through the lubricating oil increase heat calculation unit and the fluid. A lubricant increased heat calculation step of calculating and outputting the increased heat amount of the lubricant by reflecting the characteristic information about the lubricant among the feature information; Measured values input from the friction loss element measuring device installed at the thrust bearing coolant inlet and outlet among the friction loss element measuring devices through the coolant heat gain calculation unit, and characteristic information about the coolant among the fluid characteristic information. A coolant increased heat calculation step of calculating and outputting the coolant increased heat amount by reflecting the coolant increase heat amount; A bearing loss heat calculation step in which the friction portion loss calculation unit calculates and outputs thrust bearing heat loss heat (power) by adding the increased heat amount of the lubricant and the increased heat amount of the coolant through the bearing loss heat calculation unit; The friction loss calculation unit calculates the measurement value input from the friction loss element measuring device installed at the upper bearing lubricant inlet and outlet among the friction loss element measuring devices through the upper bearing loss calculation unit, and the characteristic information about the lubricant among the fluid characteristic information. An upper bearing loss calculation step of calculating and outputting the upper bearing loss heat amount by reflecting it; The friction loss calculation unit calculates the measured value input from the friction loss element measuring device installed at the lower bearing lubricant inlet and outlet among the friction loss element measuring devices through the lower bearing loss calculation unit and the characteristic information about the lubricant among the fluid characteristic information. A lower bearing loss calculation step of calculating and outputting the lower bearing loss heat amount by reflecting it; And an addition step in which the friction unit loss calculation unit calculates the friction unit loss power (P _irs2 ) by adding the thrust bearing heat loss amount, upper bearing heat loss amount, and lower bearing heat loss amount through the addition unit, and outputs it to the mechanical loss calculation unit. It is characterized by including.

The reference surface loss factors are temperature and wind speed, the friction part loss factors are the flow rate and temperature of coolant and lubricating oil, the reference surface information includes the upper and lower areas of the hydroelectric generator, and the wind speed area, and the fluid characteristic information is in the air. It includes gas characteristics, including convective heat transfer coefficient, lubricant density and specific heat, coolant density and specific heat, and air density and specific heat.

The present invention calculates energy loss by dividing it into a reference surface and a friction part, making it easy to install and classify measuring devices according to the type of hydroelectric generator, which has the effect of easily adding or deleting measuring devices depending on the type of hydroelectric generator.

In addition, the present invention can minimize the type of loss to be calculated (compared to the losses defined in IEC 60034-2-2) by calculating the energy loss by distinguishing the reference surface and the friction part, and thereby simplify the calculation operation. It works.

In addition, the present invention can be set by inputting the cooling medium material information, area, and characteristics (density, specific heat) of the lubricant that can be used differently depending on the type of hydroelectric generator, so various types of hydroelectric generators can be measured through a single hydroelectric generator efficiency measurement device. It has the effect of being able to measure precise efficiency.

Figure 1 is a diagram showing the configuration of a hydroelectric generator efficiency measurement device according to the present invention.
Figure 2 is a diagram showing in detail the configuration of the efficiency calculation unit of the hydroelectric generator efficiency measurement device according to the present invention.
Figure 3 is a diagram for explaining the reference surface of a hydroelectric generator according to the present invention.
Figure 4 is a diagram for explaining the installation location of the measuring device installed in the hydroelectric generator according to the present invention.
Figure 5 is a flowchart showing a method for measuring hydroelectric generator efficiency according to an embodiment of the present invention.

Hereinafter, with reference to the attached drawings, the configuration and operation of the hydroelectric generator efficiency measurement device according to the present invention will be described in detail, and the efficiency measurement method of the device will be described.

Figure 1 is a diagram showing the configuration of a hydroelectric generator efficiency measuring device according to the present invention, Figure 2 is a diagram showing in detail the configuration of the efficiency calculation unit of the hydroelectric generator efficiency measuring device according to the present invention, and Figure 3 is a hydroelectric generator efficiency measuring device according to the present invention. It is a drawing for explaining the reference plane of the generator, and Figure 4 is a drawing for explaining the installation position of the measuring device installed in the hydroelectric generator according to the present invention. Hereinafter, description will be made with reference to FIGS. 1 to 4.

The hydroelectric generator efficiency measurement device according to the present invention includes a storage unit 10, a loss measurement unit 20, an input unit 40, and a control unit 50, and may further include a power measurement unit 30 depending on the embodiment. You will be able to.

The storage unit 10 includes a program area for storing a control program for controlling the overall operation of the hydroelectric generator efficiency measurement device according to the present invention, a temporary area for temporarily storing data generated during the control program, and a program area for executing the control program. It includes a data area that semi-permanently stores necessary data and data generated as a result of executing the control program.

The loss measuring unit 20 is provided at a number of locations on the reference surface and friction part depending on the type of hydroelectric generator, measures the loss factor of the hydroelectric generator, and outputs it to the control unit 50. The reference surface refers to the thermal interface (indicated by a thick line) where heat generated inside the hydroelectric generator meets external air, as shown at 301 in FIG. 3. The friction part is configured to generate friction and heat loss when driving the hydroelectric generator, and includes a thrust bearing (404), an upper bearing (405), and a lower bearing (406). It could be something like this. The loss factors are factors that can cause heat loss in the hydroelectric generator and can be reference surface loss factors such as air and wind relative to the reference surface, and frictional loss factors such as temperature and flow rate of lubricating oil and coolant to the friction part. .

The loss measuring unit 20 includes a reference surface loss element measuring unit 21 that measures a reference surface loss factor and a friction loss element measuring unit 22 that measures a frictional loss factor.

In the example of FIG. 4, the reference plane loss element measuring unit 21 is installed at one or more positions in each of the upper enclosure 401, the lower enclosure 402, and the wind duct 403 to measure temperature or wind speed and measure the control unit ( 50) and includes a number of reference plane loss factor meters that output. The number and installation location of the reference plane loss element measuring devices may vary depending on the type of hydroelectric generator.

In the example of FIG. 4, the friction loss element measuring unit 22 is connected to each of the thrust bearing 404, the upper bearing 405, and the lower bearing 406, and is connected to the inlet and coolant supply pipe for supplying lubricating oil or coolant. It includes a plurality of friction loss element meters installed at the outlet to measure the temperature and flow rate of lubricant or coolant and output them to the control unit 50. The type and number of bearings may change depending on the type of hydroelectric generator, and the number and location of the friction loss element measuring devices may also vary depending on the type of hydroelectric generator. The friction loss element measuring device that measures the temperature and flow rate may be configured to calculate and output the average temperature and average flow rate.

The power measuring unit 30 is configured according to the embodiment and measures the power consumption of the driving part, including the exciter power consumption (P _excitor ) and the lubricating oil circulation pump power consumption (P _{oil pump} ) consumed by the driving parts such as the exciter and the lubricant pump. It includes each power meter that measures and outputs to the control unit 50, and a production power meter that measures and outputs the generator output (P ₂ ), which is the power produced by the hydroelectric generator.

The input/output unit 40 outputs information such as the efficiency value of the hydroelectric generator measured according to the present invention for the user to view, and allows the user to view various information including fluid characteristics according to the type of hydroelectric generator and information on the reference surface area of the hydroelectric generator. By allowing input values (or parameter values) to be input, the input values are provided to the control unit 50. The fluid characteristics include the characteristics (density, specific heat, etc.) of lubricating oil and coolant, and may also be used as a term that includes the density and specific heat of air (gas).

The input/output unit 40 may be composed of a display means such as a liquid crystal display (LCD) and an input device such as a keyboard or mouse, and may perform data communication with a computer terminal used by an external user. It may be a data communication means for inputting and outputting information.

The input/output unit 40 provides various calculation values calculated from the control unit 50 to the user through a user interface means, and depending on the embodiment, receives input values as shown in Table 1 below through the user interface means and outputs the input values to the control unit 50. ) will be output.

As described above, the exciter power consumption and generator output may be measured through the power measurement unit 30.

The control unit 50 includes a user interface unit 60, a generator setting unit 70, a data acquisition unit 80, and an efficiency calculation unit 90, and controls the overall operation of the hydroelectric generator efficiency measurement device according to the present invention. do.

Specifically, the user interface unit 60 provides a user interface means to the user through the input/output unit 40, provides various information to the user through the user interface means, and provides the user with the above-mentioned input through the user interface means. Values are input.

The generator setting unit 70 provides a hydroelectric generator setting means through the user interface unit 60 and the input/output unit 40, and provides a hydroelectric generator setting means to determine the type of hydroelectric generator and the reference plane loss factor according to the type of hydroelectric generator. Setting information including the reference surface loss element measuring device configured in the measurement unit 21, the friction loss component measuring device configured in the friction loss component measuring unit 22, and input values is input and stored in the storage unit 10. Set it. The setting information includes the number of measuring devices, measurement loss factors for each measuring device, units of measuring devices (measurement loss factors), information on the measuring devices paired to calculate the temperature difference between the reference surface and the atmospheric air, and information on measuring devices installed around the generator (turbine). It could be.

The data acquisition unit 80 includes a reference surface loss element acquisition unit 81, a friction loss element acquisition unit 82, and a drive system power acquisition unit 83, and includes data for calculating the efficiency of the hydroelectric generator according to the present invention. is collected and output to the efficiency calculation unit 90.

The reference surface loss element acquisition unit 81 measures the reference surface loss factor through the reference surface loss element measuring devices of the reference surface loss element measuring unit 21 installed on the reference surface of the hydroelectric power generator, that is, the upper enclosure, lower enclosure, and wind pipe in the example of FIG. 4. The reference plane loss element measurement value is obtained and output to the efficiency calculation unit 90.

The friction part loss element acquisition unit 82 is the friction part of the hydroelectric generator, that is, the inlet of the lubricating oil and coolant supply pipe supplied to the thrust bearing 404, the upper bearing 405, and the lower bearing 406 in the example of FIG. The friction loss factor measurement value obtained by measuring the friction loss factor through friction loss factor measuring devices installed at the outlet is output to the efficiency calculation unit 90.

When a generator efficiency calculation event occurs, the drive system power acquisition unit 83 receives drive system power including exciter power consumption, lubricant pump power consumption, and hydroelectric generator power from any one of the power measurement unit 30 and the input/output unit 40. The value is obtained and output to the efficiency calculation unit 90.

The efficiency calculation unit 90 includes a reference surface loss calculation unit 91, a friction loss calculation unit 92, a power consumption calculation unit 94, a machine loss calculation unit 93, a total loss calculation unit 95, and a generator efficiency unit. Including the calculation unit 96, the efficiency of the hydroelectric generator is calculated, stored in the storage unit 10, and provided to the user through the user interface unit 60 and the input/output unit 40 upon the user's request.

As shown in FIG. 2, the reference surface loss calculation unit 91 includes an average value calculation unit 101 and a cooler discharge heat calculation unit 102, and calculates the reference surface loss heat amount (power) (P _irs1 ) into the machine loss calculation unit 93. ) is output.

The average value calculation unit 101 calculates the average value (total measuring device output value/total number of measuring devices) for each reference surface loss factor (wind speed (wind), temperature) and reference surface type (wind speed, upper enclosure, lower enclosure) among the reference surface loss factor measurement values. Calculate and print. In addition, the average value calculation unit 101 calculates and outputs the average value of temperature differences by a reference surface loss element meter that measures the temperature of a preset reference surface and a reference surface loss element meter that is paired with the reference surface loss element meter and measures the surrounding temperature.

The average value calculation unit 101 calculates the average value using Equation 2 below. For example, in Figure 4, the average value calculation unit 101 is a reference surface loss element measuring device, including four upper enclosure temperature meters, nine wind speed meters, nine wind speed outlet temperature meters, and four lower enclosure temperature meters. In this case, the average value is calculated as shown in Equation 2 below.

Here, V _air is the average wind speed, T _out is the average temperature of the air discharged from the wind pipe, T _in is the average temperature of the air entering the wind pipe, WST-n is the wind speed measuring instrument identification information, and TD-m is the temperature of the air coming out of the wind pipe. This is the identification information of the temperature measuring device that measures , and TD-ik is the identification information of the temperature measuring device that measures the air temperature near the lower enclosure of the generator. The Δθ _upper is the average temperature difference between the upper reference surface temperature and the surrounding air, and Δθ _lower is the average temperature difference between the lower reference surface temperature and the surrounding air.

Where n is the number of wind speed gauges, m is the number of temperature gauges installed at the wind speed outlet, k is the number of generator lower enclosure temperature gauges, l is the upper enclosure temperature gauge number, and j is the lower enclosure temperature gauge number.

When the average value (V _air , T _out , T _in , Δθ _upper , Δθ _lower ) according to the type of reference surface of the reference surface loss element measurements input from the average value calculation unit 101 is input, the cooler discharge heat calculation unit 102 performs the following math Calculate the forced convection heat loss (P _fc ) by applying Equation 4, calculate the natural convection heat loss (P _nc =P _{nc_upper} +P _{nc_lower} ) by Equation 5 below, and calculate the reference surface heat loss by Equation 6. Calculate and output (P _irs1 ).

Here, C _p,air is the specific heat of air, A _air is the wind speed area, and ρ _air is the air density.

Here, h is the convective heat transfer coefficient, A _upper is the upper reference surface area, A _lower is the lower reference surface area, P _nc,upper is the upper natural convection loss, and P _nc,lower is the lower natural convection loss.

The friction loss calculation unit 92 includes a lubricant increased heat calculation unit 111, a coolant increased heat calculation unit 112, an upper bearing loss calculation unit 113, a lower bearing loss calculation unit 114, and a bearing loss heat calculation unit. Including (115) and the addition unit 116, the amount of heat loss in the friction area (or "friction unit loss power") (P _irs2 ) is calculated and output to the machine loss calculation unit 93.

The lubricant increased heat calculation unit 111 applies the measured value and input value input from the friction loss element acquisition unit 82 to Equation 7 below to determine the thrust bearing loss heat absorbed by the turbine lubricant (P _th,o ) Calculate .

Here, ρ _o is the lubricant density, C _o is the specific heat of the lubricant, Q _FFD-101 is the average value of the thrust lubricant flow rate, T _TD-119 is the average value of the outlet temperature of the thrust bearing lubricant oil, and T _TD-118 is the average value of the outlet temperature of the thrust bearing lubricant oil. This is the average inlet temperature.

The coolant increased heat calculation unit 112 calculates the thrust bearing loss heat absorbed by the coolant (P _th,w ) by applying the measured value and input value input from the friction loss element acquisition unit 82 to Equation 8 below. Calculate.

Here, ρ _w is the coolant density, Q _FE-101 is the average thrust coolant flow rate, C _w is the coolant specific heat, T _TD-121 is the average thrust bearing coolant outlet temperature, and T _TD-120 is the thrust bearing coolant outlet temperature. This is the average inlet temperature.

The bearing loss heat calculation unit 115 applies the lubricant increased heat calculated from the lubricant increased heat calculation unit 111 and the coolant increased heat calculated from the coolant increased heat calculation unit 112 to the following equation 9 to provide thrust bearing The thrust bearing heat loss (P _th ) generated at 404 is calculated and output to the addition unit 116.

The upper bearing loss calculation unit 113 loads the necessary input values among the measured values output from the friction loss element acquisition unit 82 and the input values stored in the storage unit 10 and then applies the following equation 10 to calculate the upper bearing loss. Calculate the upper bearing heat loss (P _upper ) occurring in (405).

Here, Q _FFD-102 is the average value of the upper bearing lubricant oil flow rate, T _TD-123 is the average value of the upper bearing lubricant outlet temperature, and T _TD-122 is the average value of the upper bearing lubricant inlet temperature.

The lower bearing loss calculation unit 114 loads the necessary input values among the measured values output from the friction loss element acquisition unit 82 and the input values stored in the storage unit 10 and then applies the following equation 11 to calculate the lower bearing loss. Calculate the lower bearing heat loss (P _lower ) occurring in (406).

Here, Q _FFD-103 is the average value of the lower bearing lubricant flow rate, T _TD-125 is the average value of the lower bearing lubricant outlet temperature, and T _TD-124 is the average value of the lower bearing lubricant inlet temperature.

The addition unit 116 calculates the thrust bearing loss heat amount (P _th ) output from the bearing loss calculation unit 115, the upper bearing loss heat amount (P _upper ) output from the upper bearing loss calculation unit 113, and the lower bearing loss. The lower bearing loss heat (P _lower ) output from the unit 114 is applied to Equation 12 below to calculate the machine loss heat, that is, the friction portion heat loss (P _irs2 ), and output it to the machine loss calculation unit 93.

The mechanical loss calculation unit 93 calculates the reference surface loss heat amount (P _irs1 ) input from the reference surface loss calculation unit 91 and the friction part loss heat amount (P _irs2 ) input from the friction part loss calculation unit 92 using Equation 13 below: is applied to calculate the mechanical loss heat (P _irs ) and output it to the charge loss calculation unit (95).

The power consumption calculation unit 94 calculates the total loss by calculating the drive system power consumption (P _ers ) by applying the exciter power consumption and the lubricant circulation pump power consumption obtained through the drive system power acquisition unit 83 to Equation 14 below. Output as 95.

The total loss calculation unit 95 applies the machine loss heat quantity (P _irs ) output from the machine loss calculation unit 93 and the drive system power consumption (P _ers ) input from the power consumption calculation unit 94 to Equation 15 below. Calculate the total power loss (P _T ).

The generator efficiency calculation unit 96 calculates the total loss power (PT) input from the total loss calculation unit 95 and the generator output (P2), that is, the production power, input from the drive system power acquisition unit 83 into Equation 1 above. After calculating the generator efficiency, it is stored in the storage unit 10 and provided to the user through the user interface unit 60 and the input/output unit 40 upon the user's request.

Figure 5 is a flowchart showing a method of measuring the efficiency of a hydroelectric generator according to an embodiment of the present invention. It is a flowchart showing a method of measuring the efficiency of a hydroelectric generator after the generator settings for the hydroelectric generator to be tested are completed.

Referring to FIG. 5, the user interface unit 60 monitors whether an efficiency calculation event occurs (S111). The efficiency calculation event may occur automatically upon completion of generator settings through the generator setting unit 70, may occur automatically when measurement data is input from the loss measurement unit 20, or may occur automatically when measurement data is input from the loss measurement unit 20, or may be generated automatically by the user through the input/output unit 40. This may occur when requesting an efficiency calculation.

When an efficiency calculation event occurs, the data acquisition unit 80 collects data for calculating generator efficiency through the loss measurement unit 20 or calculates efficiency through the loss measurement unit 20 and the power measurement unit 30. Collect data for As described above, the data may be reference surface loss factor measurement values, friction part loss factor measurement values, drive system power values (exciter power consumption, lubricant circulation pump power consumption, generator production power), etc. Input values other than the drive system power value will be input when setting the generator through the generator setting unit 70 and stored in the storage unit 10.

When data begins to be collected, the efficiency calculation unit 90 calculates the reference surface heat loss (P _irs1 ) through the reference surface loss calculation unit 91 (S115) and the frictional part loss heat amount through the friction part loss calculation unit 92. Calculate (P _irs2 ) (S117).

Once the reference surface heat loss and the frictional part heat loss are calculated, the efficiency calculation unit 90 calculates the mechanical loss heat amount by adding the reference surface heat loss and the frictional part heat loss through the mechanical loss calculation unit 93 (S119).

The efficiency calculation unit 90 calculates the exciter power consumption (P _excitor ) input from the driving power acquisition unit 83 through the power consumption calculation unit 94 and the lubricating oil circulation after calculating the heat loss of the machine or when calculating the heat loss of the friction part. Calculate the drive system power consumption (P _ers ) by adding the pump power consumption (P _{oil pump} ) (S121).

When the mechanical loss heat (P _irs ) and the drive system power consumption (P _ers ) are calculated, the efficiency calculation unit 90 calculates the total loss power (P _T ) through the total loss calculation unit 95 (S123), and the total loss Power (P _T ) and generator-generated power (P ₂ ) are applied to the generator efficiency calculation formula, Equation 1 above, to calculate generator efficiency and output it (S125).

Meanwhile, it is common knowledge in the technical field that the present invention is not limited to the above-described typical preferred embodiments, but can be implemented by various improvements, changes, substitutions, or additions without departing from the gist of the present invention. Anyone who has will be able to understand it easily. If the implementation by such improvement, change, substitution or addition falls within the scope of the appended patent claims below, the technical idea thereof should also be regarded as belonging to the present invention.

10: storage unit 20: loss measurement unit
21: Reference surface loss element measuring unit 22: Friction loss element measuring unit
30: power measurement unit 40: input/output unit
50: control unit 60: user interface unit
70: Generator setting unit 80: Data acquisition unit
81: Reference surface loss element acquisition unit 82: Friction loss element acquisition unit
83: Drivetrain power acquisition unit 90: Efficiency calculation unit
91: Reference surface loss calculation unit 92: Friction loss calculation unit
93: Machine loss calculation unit 94: Power consumption calculation unit
95: Total loss calculation unit 96: Generator efficiency calculation unit
101: average value calculation unit 102: cooler discharge heat calculation unit
111: Lubricant increased heat calculation unit 112: Coolant increased heat calculation unit
113: upper bearing loss calculation unit 114: lower bearing loss calculation unit
115: Bearing loss heat calculation unit 116: Addition unit

Claims (13)

A reference surface loss element measurement unit that includes two or more reference surface loss element gauges that are installed on the reference surface corresponding to the type of hydroelectric generator to measure and output the reference surface loss factor, and a friction part that is installed in the friction part corresponding to the type of hydroelectric generator to measure the friction loss factor. A loss measuring unit including a friction loss element measuring unit including two or more friction loss element measuring instruments that output the output;
an input/output unit that provides a user interface means to the user, provides information through the user interface means, and receives information through the user interface means;
Information on the installation location of the reference surface loss factor measuring instrument that measures the reference surface loss factor according to the type of hydroelectric generator, information on the reference surface loss factor for each reference surface loss factor measuring device, and information on the installation location of the friction loss factor measuring device that measures the loss factor in the friction area and friction loss factor. a storage unit that stores friction loss element information for each element measuring device and stores fluid characteristic information and reference surface area information input through the input/output unit; and
Exciter power consumption, lubricating oil circulation pump power consumption, and generator output power are acquired, fluid characteristic information and reference surface area information corresponding to the type of hydroelectric generator are obtained through the input/output unit, and stored in the storage unit, and the fluid characteristic information is stored in the storage unit. Friction loss power (P _irs2 ) calculated from measurements of the friction loss element taking into account the reference surface loss power (P _irs1 ) calculated from measurements of the reference surface loss element taking into account the reference surface area information And, calculate the total power consumption (P _T ) by adding the power consumption of the driving unit (P _ers ), which is calculated by adding the power consumption of the exciter and the power consumption of the lubricant circulation pump, and apply the total power consumption and the generator output power. It includes a control unit that calculates the generator efficiency and outputs it through the input/output unit,
The control unit,
A user interface that provides the user interface means for inputting the fluid characteristic information and reference surface information through the input/output unit, and receives the fluid characteristic information and reference surface information through the user interface means and stores and manages the fluid characteristic information in the storage unit. wealth;
a data acquisition unit that acquires measured values for the friction loss element and the reference surface loss element from the loss measuring unit, and obtains and outputs exciter power consumption, lubricant circulation pump power consumption, and generator output power; and
Friction loss power (P _irs2 ) calculated from measurements of the friction loss element considering the fluid characteristic information, reference surface loss calculated from measurements of the reference surface loss element taking into account the reference surface area information The total power consumption (P T ) is calculated by adding the power (P _irs1 ) and the driving unit power consumption (P _ers ) calculated by adding the exciter power consumption and the lubricant _circulation pump power consumption, and the total power consumption and the An efficiency calculation unit that calculates generator efficiency by applying the generator output power and outputs it through the input/output unit,
The efficiency calculation unit,
a reference surface loss calculation unit that calculates and outputs reference surface loss power (P _irs1 ) for the reference surface by applying the reference surface area information and measured values for the reference surface loss element;
a friction loss calculation unit that calculates and outputs friction loss power (P _irs2 ) by applying the fluid characteristic information and measurement values for the friction loss factors;
A power consumption calculation unit that adds the power consumption of the exciter and the power consumption of the lubricant circulation pump obtained through the data acquisition unit to calculate and output the power consumption of the driving unit (P _ers );
a machine loss calculation unit that calculates and outputs machine loss power (P _irs ) by adding the reference surface loss power and the friction portion loss power;
a total loss calculation unit that calculates and outputs total loss power (P _T ) by adding the driving unit power consumption (P _ers ) and the machine loss power (P _irs );
It includes a generator efficiency calculation unit that calculates generator efficiency by applying the total loss power and generator output power and outputs it through the input/output unit,
The control unit,
Information on the installation location of the reference surface loss factor measuring instrument and information on the installation location of the reference surface loss element measuring device, which measures the loss factor of the reference surface to be installed depending on the type of generator, information on the reference surface loss factor for each measuring device, and information on the installation location of the loss factor measuring device on the friction part that measures the loss factor of the friction part. A generator setting user interface means for inputting loss element information including friction part loss element information for each loss element measuring device is provided to the input/output unit through the user interface unit, and loss element information is input through the generator setting user interface means. A hydroelectric generator efficiency measurement device further comprising a generator setting unit that stores loss element information for the hydroelectric generator to be tested by storing it in the storage unit.
delete delete delete A reference surface loss element measurement unit that includes two or more reference surface loss element gauges that are installed on the reference surface corresponding to the type of hydroelectric generator to measure and output the reference surface loss factor, and a friction part that is installed in the friction part corresponding to the type of hydroelectric generator to measure the friction loss factor. A loss measuring unit including a friction loss element measuring unit including two or more friction loss element measuring instruments that output the output;
an input/output unit that provides a user interface means to the user, provides information through the user interface means, and receives information through the user interface means;
Information on the installation location of the reference surface loss factor measuring instrument that measures the reference surface loss factor according to the type of hydroelectric generator, information on the reference surface loss factor for each reference surface loss factor measuring device, and information on the installation location of the friction loss factor measuring device that measures the loss factor in the friction area and friction loss factor. a storage unit that stores friction loss element information for each element measuring device and stores fluid characteristic information and reference surface area information input through the input/output unit; and
Exciter power consumption, lubricating oil circulation pump power consumption, and generator output power are acquired, fluid characteristic information and reference surface area information corresponding to the type of hydroelectric generator are obtained through the input/output unit, and stored in the storage unit, and the fluid characteristic information is stored in the storage unit. Friction loss power (P _irs2 ) calculated from measurements of the friction loss element taking into account the reference surface loss power (P _irs1 ) calculated from measurements of the reference surface loss element taking into account the reference surface area information And, calculate the total power consumption (P _T ) by adding the power consumption of the driving unit (P _ers ), which is calculated by adding the power consumption of the exciter and the power consumption of the lubricant circulation pump, and apply the total power consumption and the generator output power. It includes a control unit that calculates the generator efficiency and outputs it through the input/output unit,
The control unit,
A user interface that provides the user interface means for inputting the fluid characteristic information and reference surface information through the input/output unit, and receives the fluid characteristic information and reference surface information through the user interface means and stores and manages the fluid characteristic information in the storage unit. wealth;
a data acquisition unit that acquires measured values for the friction loss element and the reference surface loss element from the loss measuring unit, and obtains and outputs exciter power consumption, lubricant circulation pump power consumption, and generator output power; and
Friction loss power (P _irs2 ) calculated from measurements of the friction loss element considering the fluid characteristic information, reference surface loss calculated from measurements of the reference surface loss element taking into account the reference surface area information The total power consumption (P T ) is calculated by adding the power (P _irs1 ) and the driving unit power consumption (P _ers ) calculated by adding the exciter power consumption and the lubricant _circulation pump power consumption, and the total power consumption and the An efficiency calculation unit that calculates generator efficiency by applying the generator output power and outputs it through the input/output unit,
The efficiency calculation unit,
a reference surface loss calculation unit that calculates and outputs reference surface loss power (P _irs1 ) for the reference surface by applying the reference surface area information and measured values for the reference surface loss element;
a friction loss calculation unit that calculates and outputs friction loss power (P _irs2 ) by applying the fluid characteristic information and measurement values for the friction loss factors;
A power consumption calculation unit that adds the power consumption of the exciter and the power consumption of the lubricant circulation pump obtained through the data acquisition unit to calculate and output the power consumption of the driving unit (P _ers );
a machine loss calculation unit that calculates and outputs machine loss power (P _irs ) by adding the reference surface loss power and the friction portion loss power;
a total loss calculation unit that calculates and outputs total loss power (P _T ) by adding the driving unit power consumption (P _ers ) and the machine loss power (P _irs );
It includes a generator efficiency calculation unit that calculates generator efficiency by applying the total loss power and generator output power and outputs it through the input/output unit,
The reference plane loss calculation unit,
Among the measured values output from the reference surface loss factor meters, the measured values for each reference surface are averaged and output, and a reference surface loss factor meter that measures the temperature of a preset reference surface and a reference surface loss factor meter that is paired with the reference surface loss factor meter to measure the surrounding temperature. An average value calculation unit that calculates and outputs the average value of temperature differences by the loss element measuring device; and
Among the average values and the fluid characteristic information, the air characteristics and the reference surface characteristics are applied to calculate the forced convection loss (P _fc ), which is the loss occurring on the reference surface, and the temperature and surroundings of the air characteristics and the upper and lower reference surfaces, respectively. After calculating the natural convection loss (P _nc ) by applying the air temperature difference average, the cooler discharge heat calculation unit calculates and outputs the reference plane loss power (P _irs1 ) by adding the forced convection loss and natural convection loss. Hydroelectric generator efficiency measurement device.
According to claim 1 or 5,
The friction loss calculation unit,
Lubricant that calculates and outputs the amount of heat increase in the lubricant by reflecting the measurement values input from the friction loss element measuring device installed at the inlet and outlet of the thrust bearing lubricant among the friction loss element measuring devices and the characteristic information about the lubricant among the fluid characteristic information. Increased calorie calculation unit;
Coolant that calculates and outputs the increased heat of the coolant by reflecting the measurement values input from the friction loss element measuring device installed at the thrust bearing coolant inlet and outlet among the friction loss element measuring devices and the characteristic information about the coolant among the fluid characteristic information. Increased calorie calculation unit;
a bearing loss heat calculation unit that calculates and outputs thrust bearing heat loss (power) by adding the increased heat of the lubricant and the increased heat of the coolant;
Among the friction loss factor measuring devices, the upper bearing loss heat amount is calculated and output by reflecting the measured value input from the friction loss factor measuring device installed at the upper bearing lubricant inlet and outlet and the characteristic information about the lubricant among the fluid characteristic information. Bearing loss calculation unit;
Among the friction loss element measuring devices, the lower bearing loss heat amount is calculated and output by reflecting the measured value input from the friction loss element measuring device installed at the lower bearing lubricant inlet and outlet and the characteristic information about the lubricant among the fluid characteristic information. Bearing loss calculation unit; and
A hydraulic generator efficiency measuring device comprising an addition unit that calculates frictional power loss (P _irs2 ) by adding the thrust bearing heat loss, upper bearing heat loss, and lower bearing heat loss and outputs the result to the mechanical loss calculation unit. .
According to clause 6,
The reference surface information includes the upper and lower areas and windage area of the hydroelectric generator,
The fluid characteristic information includes gas characteristics for air,
A device for measuring the efficiency of a hydroelectric generator, comprising a convective heat transfer coefficient, lubricant density and specific heat, coolant density and specific heat, air density and specific heat.
Information on the installation location of the reference surface loss factor measuring instrument that measures the reference surface loss factor according to the type of hydroelectric generator, information on the reference surface loss factor for each reference surface loss factor measuring device, and information on the installation location of the friction loss factor measuring device that measures the loss factor in the friction area and friction loss factor. In the efficiency measurement method of a hydroelectric power plant efficiency measurement device, including a storage unit that stores friction loss element information for each element measuring device and stores fluid characteristic information and reference surface area information input through an input/output unit,
The control unit provides a user interface means for inputting the fluid characteristic information and reference surface information to the input/output unit through a user interface unit, receives the fluid characteristic information and reference surface information through the user interface means, and stores them in the storage unit. Managing the input value acquisition process;
The control unit acquires the measured value of the friction part loss element and the measured value of the reference surface loss element from the loss measurement unit through the data acquisition unit, and obtains and outputs exciter power consumption, lubricant circulation pump power consumption, and generator output power. data acquisition process; and
Friction loss power (P _irs2 ) calculated by the control unit from measurements of the friction loss element in consideration of the fluid characteristic information through the efficiency calculation unit, and measurement of the reference surface loss element in consideration of the reference surface area information. Calculate the total power consumption (P T ) by adding _the reference plane loss power (P _irs1 ) calculated from the values, and the drive unit power consumption (P _ers ) calculated by adding the exciter power consumption and the lubricant circulation pump power consumption. , including an efficiency calculation process of calculating generator efficiency by applying the total power consumption and the generator output power and outputting it through the input/output unit,
The efficiency calculation process is,
A reference surface loss calculation step in which the efficiency calculation unit of the control unit calculates and outputs reference surface loss power (P _irs1 ) for the reference surface by applying the reference surface area information and measured values for the reference surface loss element through the reference surface loss calculation unit;
A friction loss calculation step in which the efficiency calculation unit calculates and outputs friction loss power (P _irs2 ) by applying the fluid characteristic information and measured values for the friction loss element through the friction loss calculation unit;
A power consumption calculation step in which the efficiency calculation unit calculates and outputs power consumption of the driving unit (P _ers ) by adding the power consumption of the exciter and the power consumption of the lubricant circulation pump obtained through the data acquisition unit through the power consumption calculation unit;
A machine loss calculation step in which the efficiency calculation unit calculates and outputs machine loss power (P _irs ) by adding the reference surface loss power and the friction part loss power through the machine loss calculation unit;
A total loss calculation step in which the efficiency calculation unit calculates and outputs total loss power (PT) by adding the driving unit power consumption (P _ers ) and the machine loss power (P _irs ) through the total loss calculation unit;
A generator efficiency calculation step in which the efficiency calculation unit calculates the generator efficiency by applying the total loss power and the generator output power through the generator efficiency calculation unit and outputs the generator efficiency through the input/output unit,
The control unit, through the generator setting unit, provides installation location information of the reference surface loss element measuring device that measures the reference surface loss element to be installed according to the type of generator, reference surface loss element information for each reference surface loss element measuring device, and friction part loss factor that measures the friction part loss factor. A generator setting user interface means for inputting loss element information including installation location information of the measuring device and friction loss element information for each measuring device is provided to an input/output unit through the user interface unit, and the generator setting user interface means A method of measuring the efficiency of a hydroelectric generator, characterized in that it further comprises a generator setting process of receiving loss element information through and storing it in the storage unit to set loss element information for the hydroelectric generator to be tested.
delete delete Information on the installation location of the reference surface loss factor measuring instrument that measures the reference surface loss factor according to the type of hydroelectric generator, information on the reference surface loss factor for each reference surface loss factor measuring device, and information on the installation location of the friction loss factor measuring device that measures the loss factor in the friction area and friction loss factor. In the efficiency measurement method of a hydroelectric power plant efficiency measurement device, including a storage unit that stores friction loss element information for each element measuring device and stores fluid characteristic information and reference surface area information input through an input/output unit,
The control unit provides a user interface means for inputting the fluid characteristic information and reference surface information to the input/output unit through a user interface unit, receives the fluid characteristic information and reference surface information through the user interface means, and stores them in the storage unit. Managing the input value acquisition process;
The control unit acquires the measured value of the friction part loss element and the measured value of the reference surface loss element from the loss measuring unit through the data acquisition unit, and obtains the exciter power consumption, the lubricating oil circulation pump power consumption, and the generator output power. Output data acquisition process; and
Friction loss power (P _irs2 ) calculated by the control unit from measurements of the friction loss element in consideration of the fluid characteristic information through the efficiency calculation unit, and measurement of the reference surface loss element in consideration of the reference surface area information. Calculate the total power consumption (P T ) by adding _the reference plane loss power (P _irs1 ) calculated from the values, and the drive unit power consumption (P _ers ) calculated by adding the exciter power consumption and the lubricant circulation pump power consumption. , including an efficiency calculation process of calculating generator efficiency by applying the total power consumption and the generator output power and outputting it through the input/output unit,
The efficiency calculation process is,
A reference surface loss calculation step in which the efficiency calculation unit of the control unit calculates and outputs reference surface loss power (P _irs1 ) for the reference surface by applying the reference surface area information and measured values for the reference surface loss element through the reference surface loss calculation unit;
A friction loss calculation step in which the efficiency calculation unit calculates and outputs friction loss power (P _irs2 ) by applying the fluid characteristic information and measured values for the friction loss element through the friction loss calculation unit;
A power consumption calculation step in which the efficiency calculation unit calculates and outputs power consumption of the driving unit (P _ers ) by adding the power consumption of the exciter and the power consumption of the lubricant circulation pump obtained through the data acquisition unit through the power consumption calculation unit;
A machine loss calculation step in which the efficiency calculation unit calculates and outputs machine loss power (P _irs ) by adding the reference surface loss power and the friction part loss power through the machine loss calculation unit;
A total loss calculation step in which the efficiency calculation unit calculates and outputs total loss power (PT) by adding the driving unit power consumption (P _ers ) and the machine loss power (P _irs ) through the total loss calculation unit;
A generator efficiency calculation step in which the efficiency calculation unit calculates the generator efficiency by applying the total loss power and the generator output power through the generator efficiency calculation unit and outputs the generator efficiency through the input/output unit,
The reference plane loss calculation step is,
The reference surface loss calculator outputs an average of the measured values for each reference surface among the measured values output from the reference surface loss factor measuring devices through the average value calculation unit, and measures the temperature of a preset reference surface, and the reference surface loss factor measuring device. An average value calculation step of calculating and outputting the average value of temperature differences by a reference plane loss element meter that is paired with and measures the surrounding temperature; and
The reference surface loss calculation unit calculates the forced convection loss (P fc ), which is a loss occurring with respect to the reference surface, by applying the air characteristics and the reference surface characteristics among the average values and the fluid characteristic information through the discharge heat calculation unit, and calculates the forced convection loss (P _fc ), which is the loss occurring with respect to the reference surface, and After calculating the natural convection loss (P _nc ) by applying the average temperature difference between the temperature of the upper and lower reference planes and the surrounding air, the reference plane loss power (P _irs1 ) is calculated and output by adding the forced convection loss and natural convection loss. A method for measuring the efficiency of a hydroelectric generator, comprising the step of calculating the cooler discharge heat quantity.
According to claim 8 or 11,
The friction loss calculation process is,
Measured values input from the friction loss element measuring device installed at the inlet and outlet of the thrust bearing lubricant among the friction loss element measuring devices through the lubricant heat gain calculation unit, and characteristic information about the lubricant among the fluid characteristic information. A lubricant increased heat calculation step of calculating and outputting the lubricant increased heat amount by reflecting the;
Measured values input from the friction loss element measuring device installed at the thrust bearing coolant inlet and outlet among the friction loss element measuring devices through the coolant heat gain calculation unit, and characteristic information about the coolant among the fluid characteristic information. A coolant increased heat calculation step of calculating and outputting the coolant increased heat amount by reflecting the coolant increase heat amount;
A bearing loss heat calculation step in which the friction portion loss calculation unit calculates and outputs thrust bearing heat loss heat (power) by adding the increased heat amount of the lubricant and the increased heat amount of the coolant through the bearing loss heat calculation unit;
The friction loss calculation unit calculates the measurement value input from the friction loss element measuring device installed at the upper bearing lubricant inlet and outlet among the friction loss element measuring devices through the upper bearing loss calculation unit, and the characteristic information about the lubricant among the fluid characteristic information. An upper bearing loss calculation step of calculating and outputting the upper bearing loss heat amount by reflecting it;
The friction loss calculation unit calculates the measured value input from the friction loss element measuring device installed at the lower bearing lubricant inlet and outlet among the friction loss element measuring devices through the lower bearing loss calculation unit and the characteristic information about the lubricant among the fluid characteristic information. A lower bearing loss calculation step of calculating and outputting the lower bearing loss heat amount by reflecting it; and
An addition step in which the friction loss calculation unit calculates the friction loss power (P _irs2 ) by adding the thrust bearing heat loss, upper bearing heat loss, and lower bearing heat loss through the addition unit and outputs it to the machine loss calculation unit. A method for measuring the efficiency of a hydroelectric generator, characterized in that:
According to clause 12,
The reference plane loss factors are temperature and wind speed,
The friction loss factors are the flow rate and temperature of coolant and lubricant,
The reference surface information includes the upper and lower areas and windage area of the hydroelectric generator,
The fluid characteristic information includes gas characteristics for air,
A method for measuring the efficiency of a hydroelectric generator, comprising: convective heat transfer coefficient, lubricant density and specific heat, coolant density and specific heat, air density and specific heat.