CN110399624B - Parameter testing method and system for high-power centralized reactive power compensation device - Google Patents
Parameter testing method and system for high-power centralized reactive power compensation device Download PDFInfo
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- CN110399624B CN110399624B CN201810380143.8A CN201810380143A CN110399624B CN 110399624 B CN110399624 B CN 110399624B CN 201810380143 A CN201810380143 A CN 201810380143A CN 110399624 B CN110399624 B CN 110399624B
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Abstract
The invention provides a parameter testing method and a system for a high-power centralized reactive power compensation device, which comprises the following steps: performing hardware-in-loop connection on a pre-constructed real-time simulation model and a high-power centralized reactive power compensation device controller, and establishing a parameter test platform; acquiring grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller under various test working conditions based on the parameter test platform; and integrating the grid-connected current and the grid-connected point voltage under each working condition, and determining the parameter value of the reactive power compensation device. The invention tests the controller of the high-power centralized reactive power compensation device, and the control algorithm of the controller is consistent with the algorithm of the device in actual working, thereby comprehensively showing the real control performance of the high-power centralized reactive power compensation device; the requirement of parameter testing is met.
Description
The technical field is as follows:
the invention belongs to the field of new energy detection, and particularly relates to a parameter testing method and system for a high-power centralized reactive power compensation device.
Background art:
the SVG model of the high-power centralized reactive power compensation device is an important component for performance evaluation of a new energy power station, and model parameters need to be set through parameter testing of the high-power reactive power compensation device. The parameter test needs to cover all operation working conditions of the concentrated reactive power compensation device, but the high-power concentrated reactive power compensation device in the wind power plant and the photovoltaic power station at present has high voltage level, the capacity far exceeds the capacity of the test device, the laboratory/field can not carry out the test aiming at all the test working conditions, and the parameter test requirement can not be met, so the SVG of the high-power concentrated reactive power compensation device needs to be carried out by a hardware-in-the-loop simulation technical means.
At present, parameter testing for the high-power centralized reactive power compensation device under the full-operation working condition is not carried out, and the parameter testing for the high-power centralized reactive power compensation device under the full-operation working condition cannot be realized by means based on field testing.
The invention content is as follows:
in order to overcome the defects, the invention provides a parameter testing method for a high-power centralized reactive power compensation device, which comprises the following steps:
connecting a pre-constructed real-time simulation model with a high-power centralized reactive power compensation device controller in a hardware-in-loop manner, and establishing a parameter test platform;
acquiring grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions based on the parameter test platform;
and integrating the grid-connected current and the grid-connected point voltage under each working condition, and determining the parameter value of the reactive power compensation device.
Preferably, the obtaining of the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions based on the parameter testing platform includes:
when a high-power centralized reactive power compensation device model in a real-time simulation model works in a constant voltage mode, obtaining grid-connected current and grid-connected point voltage of a high-power centralized reactive power compensation device controller;
when a high-power centralized reactive power compensation device model in the real-time simulation model works in a constant reactive power mode, the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller are obtained.
Preferably, when the high-power centralized reactive power compensation device model in the real-time simulation model operates in a constant voltage mode, obtaining the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller includes:
and setting the high-power centralized reactive power compensation device to output fixed capacitive reactive power or inductive reactive power, adjusting the power grid simulation device of the real-time simulation model, and obtaining at least 5 values of grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when the power grid voltage changes.
Preferably, when the high-power centralized reactive power compensation device model in the real-time simulation model works in a constant reactive power mode, the method for obtaining the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller includes:
setting the high-power centralized reactive power compensation device to output fixed capacitive reactive power or inductive reactive power, adjusting a power grid simulation device of the real-time simulation model, and obtaining at least 5 values of grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when the power grid voltage changes;
setting at least 5 values between 0-100% of the maximum or minimum capacitive reactive power to obtain grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value;
and setting at least 5 values from 0-100% of the maximum or minimum inductive reactive power to obtain the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value.
Preferably, the building of the real-time simulation model includes:
and establishing a high-power centralized reactive power compensation device model, a power grid simulation device model and a power grid model based on the topological structure of the high-power centralized reactive power compensation device.
Preferably, the analyzing the grid-connected current and the grid-connected point voltage, integrating the grid-connected current and the grid-connected point voltage under each working condition, and determining parameter values includes:
drawing the effective value of the voltage, the reactive current and the reactive power curve of a grid connection point of the high-power centralized reactive power compensation device under various test working conditions, taking at least 1 group of test values to identify the parameters of the high-power centralized reactive power compensation device, carrying out weighted average on the identification result, and determining the parameter values.
A high power centralized reactive power compensation device parameter testing system, the system comprising:
establishing a platform module: the system comprises a real-time simulation model, a high-power centralized reactive compensation device controller, a parameter test platform and a parameter test platform, wherein the real-time simulation model is constructed in advance;
a data acquisition module: the parameter testing platform is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions;
a parameter determination module: and the system is used for integrating the grid-connected current and the grid-connected point voltage under each working condition and determining the parameter value of the reactive power compensation device.
Preferably, the parameter determining module includes: a drawing submodule and a recognition submodule;
the drawing submodule is used for drawing a grid-connected point voltage effective value, a reactive current and a reactive power curve of the high-power centralized reactive power compensation device under various test working conditions;
and the identification submodule is used for identifying the parameters of the high-power centralized reactive power compensation device by taking at least 1 group of test values, and determining the parameter values by carrying out weighted average on the identification results.
Preferably, the data obtaining module includes: the constant voltage submodule and the constant reactive submodule;
the constant voltage sub-module is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when a high-power centralized reactive power compensation device model in the real-time simulation model works in a constant voltage mode;
the constant reactive power sub-module is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when a high-power centralized reactive power compensation device model in the real-time simulation model works in a constant reactive power mode.
Preferably, the constant-voltage submodule includes: a first acquisition unit;
the first obtaining unit is used for setting the high-power centralized reactive power compensation device to output fixed capacitive reactive power or inductive reactive power, adjusting the power grid simulation device of the real-time simulation model, and obtaining at least 5 values of grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when the power grid voltage changes.
Preferably, the constant wattless module includes: a second acquisition unit, a third acquisition unit and a fourth acquisition unit;
the second obtaining unit is used for setting the high-power centralized reactive power compensation device to output fixed capacitive reactive power or inductive reactive power, adjusting the power grid simulation device of the real-time simulation model, and obtaining at least 5 values of grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when the power grid voltage changes;
the third obtaining unit is used for setting at least 5 values from 0% to 100% of the maximum or minimum capacitive reactive power to obtain grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value;
the fourth obtaining unit is configured to set at least 5 values from 0% to 100% of the maximum or minimum inductive reactive power, and obtain the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention provides a parameter testing method of a high-power centralized reactive power compensation device, which comprises the steps of performing hardware-in-loop connection on a pre-constructed real-time simulation model and a high-power centralized reactive power compensation device controller to establish a parameter testing platform; acquiring grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions based on the parameter test platform; and integrating the grid-connected current and the grid-connected point voltage under each working condition, and determining the parameter value of the reactive power compensation device. The parameter test of the high-power centralized reactive power compensation device under the full-operation working condition is realized, the real control performance of the high-power centralized reactive power compensation device can be comprehensively reflected, and the requirement of the parameter test is met.
2. The parameter testing method for the high-power centralized reactive power compensation device provided by the invention solves the problem that the laboratory/field can not carry out full working condition testing due to the high voltage level and the capacity far exceeding the capacity of the testing device of the high-power centralized reactive power compensation device in a new energy power station, and also avoids potential safety hazards caused by the problems of high voltage, large current and the like in field testing.
3 in the hardware-in-loop simulation test, the built main circuit model is consistent with the actual device, and the input/output modes of all analog quantities and digital quantities are consistent with the actual device, so that the performance of the high-power centralized reactive compensation device can be truly reflected, and the correctness of test data is ensured.
4 the parameter testing method for the high-power centralized reactive power compensation device comprehensively considers various working modes of the high-power centralized reactive power compensation device, and performs power grid voltage disturbance working condition testing, instruction tracking testing and the like under various working modes, so that the performance of the high-power centralized reactive power compensation device is tested in an all-round manner.
5 the parameter testing method of the high-power centralized reactive power compensation device, provided by the invention, provides an important technical means for carrying out parameter testing of the high-power centralized reactive power compensation device, and provides correct data support for subsequent model parameter identification of the high-power centralized reactive power compensation device.
Description of the drawings:
FIG. 1 is a flow chart of the implementation steps of the parameter testing method of the high-power centralized reactive power compensation device of the invention;
FIG. 2 is a signal docking diagram without an optical fiber interface according to the present invention;
FIG. 3 is a diagram of the present invention with a fiber optic interface signal interface;
fig. 4 is a reactive current response diagram of the device in the fixed voltage control mode according to the present invention;
fig. 5 is a voltage response characteristic diagram of the device in the constant voltage control mode according to the present invention;
fig. 6 is a reactive power response characteristic diagram of the device in the fixed voltage control mode according to the present invention.
The specific implementation mode is as follows:
for better understanding of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention:
example 1
The invention provides a parameter testing method of a high-power centralized reactive power compensation device, which comprises the following specific implementation steps as shown in figure 1:
based on a pre-constructed real-time simulation model, hardware-in-loop connection is carried out on the real-time simulation model and a high-power centralized reactive power compensation device controller, and a parameter testing platform is established;
acquiring grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions based on the parameter test platform;
and integrating the grid-connected current and the grid-connected point voltage under each working condition, and determining the parameter value of the reactive power compensation device.
The invention provides a hardware-in-loop simulation based parameter test method for a high-power centralized reactive power compensation device, which is used for carrying out parameter test on a certain type of 20MVar high-power centralized reactive power compensation device installed in a photovoltaic power station, wherein the output voltage is 35kV, each phase is formed by connecting 38 power units in series, and the voltage is boosted to 110kV through a main transformer of the photovoltaic power station.
The method comprises the following specific steps:
(1) Acquiring a detailed topological structure of the high-power centralized reactive power compensation device, and establishing a main loop real-time simulation model in a parameter test platform of the high-power centralized reactive power compensation device, wherein the main loop real-time simulation model comprises a high-power centralized reactive power compensation device model, a power grid simulation device model and a power grid model;
(2) The existing high-power centralized reactive power compensation device controller comprises two interfaces: fiber optic interfaces and electrical interfaces. Therefore, two connection modes exist in the butt joint of the real-time high-power centralized reactive compensation device parameter test platform and the controller:
1) The parameter test platform of the high-power centralized reactive power compensation device is not provided with an optical fiber interface, and signals are in butt joint as shown in figure 2. Analog quantity signals such as grid-connected current, grid-connected point low-voltage side voltage, grid-connected point high-voltage side voltage and the like of the high-power centralized reactive power compensation device in the real-time simulation model are measured, and are output to an A/D sampling port of a controller of the high-power centralized reactive power compensation device through an analog quantity output board card after linear transformation; after the voltage signal at the direct current side is linearly converted, the voltage signal is output to a photoelectric conversion box through an analog output board card, converted into an optical signal according to a certain communication protocol and transmitted to a communication interface of a controller of the high-power centralized reactive power compensation device; digital signals such as switch readback signals and the like are output to an I/O port of a controller of the high-power centralized reactive power compensation device through a digital output board card; the high-power centralized reactive power compensation device controller outputs pulse signals which are converted into electric signals through the photoelectric conversion box and then are input into the real-time simulation model through the digital input board card, and hardware-in-loop simulation butt joint is completed.
2) The parameter testing platform of the high-power centralized reactive power compensation device is provided with an optical fiber interface, and signals are in butt joint as shown in figure 3. Analog quantity signals such as grid-connected current, grid-connected point low-voltage side voltage, grid-connected point high-voltage side voltage and the like of the high-power centralized reactive power compensation device in the real-time simulation model are measured, and the analog quantity signals are output to an A/D sampling port of a controller of the high-power centralized reactive power compensation device through an analog quantity output board card after linear transformation; after linear conversion, the direct-current side voltage signal is directly output to a communication interface of a controller of the high-power centralized reactive power compensation device through a certain communication protocol; digital signals such as switch readback signals and the like are output to an I/O port of a controller of the high-power centralized reactive power compensation device through a digital output board card; the controller of the high-power centralized reactive power compensation device outputs pulse signals which are input to an optical fiber interface of a parameter testing platform through a certain communication protocol to drive a real-time simulation model, and hardware-in-loop simulation butt joint is completed.
(3) The high-power centralized reactive power compensation device works in a constant voltage mode, so that the high-power centralized reactive power compensation device outputs a certain fixed capacitive reactive power or inductive reactive power, adjusts a power grid simulation device model, manufactures a power grid voltage disturbance working condition, realizes the voltage drop or the voltage rise of a power grid, and records the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device under each disturbance working condition.
(4) The high-power centralized reactive power compensation device works in a constant reactive power mode, so that the high-power centralized reactive power compensation device outputs a certain fixed capacitive reactive power or inductive reactive power, adjusts a power grid simulation device model, makes a power grid voltage disturbance working condition, realizes power grid voltage drop or lifting, and records grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device under each disturbance working condition.
(5) The high-power centralized reactive power compensation device works in a constant reactive power mode, so that the high-power centralized reactive power compensation device sequentially sends out 100%, 75%, 50%, 30%, 15%, 10% and 5% (or the minimum inductive reactive power value which can be output) of the maximum inductive reactive power which can be sent out by the device, and records grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device.
(6) The high-power centralized reactive power compensation device works in a constant reactive power mode, and is enabled to sequentially send out 100%, 75%, 50%, 30%, 15%, 10% and 5% (or the minimum output capacitive reactive power value) of the maximum capacitive reactive power which can be sent out by the device, and the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device are recorded.
(7) And (4) according to the test results of (3) to (6), carrying out data processing on the hardware-in-loop simulation data of the high-power centralized reactive power compensation device under each test working condition to finish parameter test.
And finally, carrying out power grid voltage disturbance test and instruction tracking test under various working modes.
Fig. 4 is a reactive current response characteristic diagram of the device when the grid voltage drops to 0.20p.u.when the high-power centralized reactive power compensation device outputs capacitive reactive power of 0.5p.u.in the constant voltage control mode.
Fig. 5 is a reactive voltage response characteristic diagram of the device when the power centralized reactive power compensation device outputs capacitive reactive power of 0.5p.u.under the constant voltage control mode, and the voltage of the power grid drops to 0.20p.u.
Fig. 6 is a reactive power response characteristic diagram of the device when the high-power centralized reactive power compensation device outputs capacitive reactive power of 0.5p.u.under the constant voltage control mode, and the voltage of the power grid drops to 0.20p.u.
Example 2
Based on the same conception, the invention also provides a hardware-in-loop simulation reactive compensation device parameter testing system, which comprises:
establishing a platform module: the system comprises a real-time simulation model, a high-power centralized reactive compensation device controller, a parameter testing platform and a power control module, wherein the real-time simulation model is constructed in advance;
a data acquisition module: the parameter testing platform is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions;
a parameter determination module: and the system is used for integrating the grid-connected current and the grid-connected point voltage under each working condition and determining the parameter value of the reactive power compensation device.
Preferably, the parameter determining module includes: a drawing submodule and a recognition submodule;
the drawing submodule is used for drawing a grid connection point voltage effective value, a reactive current and a reactive power curve of the high-power centralized reactive power compensation device under various test working conditions;
and the identification submodule is used for identifying the parameters of the high-power centralized reactive power compensation device by taking at least 1 group of test values, and determining the parameter values by carrying out weighted average on the identification results.
The data acquisition module comprises: a constant voltage sub-module and a constant reactive sub-module;
the constant voltage sub-module is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when a high-power centralized reactive power compensation device model in the real-time simulation model works in a constant voltage mode;
the constant reactive power sub-module is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when a high-power centralized reactive power compensation device model in the real-time simulation model works in a constant reactive power mode.
The constant voltage submodule includes: a first acquisition unit;
the first obtaining unit is used for setting the high-power centralized reactive power compensation device to output fixed capacitive reactive power or inductive reactive power, adjusting the power grid simulation device of the real-time simulation model, and obtaining at least 5 values of grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when the power grid voltage changes.
The constant reactive submodule comprises: a second acquisition unit, a third acquisition unit and a fourth acquisition unit;
the second obtaining unit is used for setting the high-power centralized reactive power compensation device to output fixed capacitive reactive power or inductive reactive power, adjusting the power grid simulation device of the real-time simulation model, and obtaining at least 5 values of grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when the power grid voltage changes;
the third obtaining unit is used for setting at least 5 values from 0% to 100% of the maximum or minimum capacitive reactive power to obtain grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value;
the fourth obtaining unit is configured to set at least 5 values from 0% to 100% of the maximum or minimum inductive reactive power to obtain the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller for each value.
The platform establishing module comprises a simulation model establishing sub-module;
and the simulation model building submodule is used for building a high-power centralized reactive compensation device model, a power grid simulation device model and a power grid model based on the topological structure of the high-power centralized reactive compensation device.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. 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, and so forth) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and block diagrams of methods, systems, and computer program products according to embodiments of the application. It will be understood that each flow and block of the flow diagrams and block diagrams, and combinations of flows and blocks in the flow diagrams and block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (4)
1. A parameter testing method for a high-power centralized reactive power compensation device is characterized by comprising the following steps:
performing hardware-in-loop connection on a pre-constructed real-time simulation model and a high-power centralized reactive power compensation device controller, and establishing a parameter test platform;
acquiring grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions based on the parameter test platform;
integrating the grid-connected current and the grid-connected point voltage under each working condition, and determining a parameter value of the reactive power compensation device;
the method for acquiring the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions based on the parameter test platform comprises the following steps:
when a high-power centralized reactive power compensation device model in a real-time simulation model works in a constant voltage mode, obtaining grid-connected current and grid-connected point voltage of a high-power centralized reactive power compensation device controller;
when a high-power centralized reactive power compensation device model in a real-time simulation model works in a constant reactive power mode, acquiring grid-connected current and grid-connected point voltage of a high-power centralized reactive power compensation device controller;
when a high-power centralized reactive power compensation device model in the real-time simulation model works in a constant reactive power mode, the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller are obtained, and the method comprises the following steps:
setting the high-power centralized reactive power compensation device to output fixed capacitive reactive power or inductive reactive power, adjusting a power grid simulation device of the real-time simulation model, and obtaining at least 5 values of grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when the power grid voltage changes;
setting at least 5 values from 0 to 100% of the maximum or minimum capacitive reactive power to obtain grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value;
and setting at least 5 values between 0 to 100 percent of the maximum or minimum inductive reactive power to obtain the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value.
2. The method for testing the parameters of the high-power centralized reactive power compensation device according to claim 1, wherein the integrating the grid-connected current and the grid-connected point voltage under each working condition and determining the parameter values comprises:
drawing the effective value of the voltage of the grid-connected point, the reactive current and the reactive power curve of the high-power centralized reactive power compensation device under various test working conditions, taking at least 1 group of test values to identify the parameters of the high-power centralized reactive power compensation device, weighting and averaging the identification results, and determining the parameter values.
3. A high-power centralized reactive power compensation device parameter testing system is characterized by comprising:
establishing a platform module: the system comprises a real-time simulation model, a high-power centralized reactive compensation device controller, a parameter test platform and a parameter test platform, wherein the real-time simulation model is constructed in advance;
a data acquisition module: the parameter testing platform is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller under various working conditions;
a parameter determination module: the system comprises a grid-connected current detection device, a grid-connected point detection device and a reactive compensation device, wherein the grid-connected current detection device is used for detecting the grid-connected current and the grid-connected point voltage under each working condition;
the data acquisition module comprises: the constant voltage submodule and the constant reactive submodule;
the constant voltage sub-module is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when a high-power centralized reactive power compensation device model in the real-time simulation model works in a constant voltage mode;
the constant reactive power sub-module is used for obtaining grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when a high-power centralized reactive power compensation device model in the real-time simulation model works in a constant reactive power mode;
the constant reactive submodule comprises: a second acquisition unit, a third acquisition unit and a fourth acquisition unit;
the second obtaining unit is used for setting the high-power centralized reactive power compensation device to output fixed capacitive reactive power or inductive reactive power, adjusting the power grid simulation device of the real-time simulation model, and obtaining at least 5 values of grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller when the power grid voltage changes;
the third obtaining unit is used for setting at least 5 values from 0 to 100% of the maximum or minimum capacitive reactive power to obtain grid-connected current and grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value;
the fourth obtaining unit is used for setting at least 5 values from 0 to 100% of the maximum or minimum inductive reactive power to obtain the grid-connected current and the grid-connected point voltage of the high-power centralized reactive power compensation device controller of each value.
4. The parameter testing system for the high-power centralized reactive power compensation device according to claim 3, wherein the parameter determining module comprises: a drawing submodule and an identification submodule;
the drawing submodule is used for drawing a grid connection point voltage effective value, a reactive current and a reactive power curve of the high-power centralized reactive power compensation device under various test working conditions;
and the identification submodule is used for identifying the parameters of the high-power centralized reactive compensation device by taking at least 1 group of test values, and determining the parameter values by weighting and averaging the identification results.
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| CN106610456A (en) * | 2015-10-21 | 2017-05-03 | 中国电力科学研究院 | Grid-connected performance test method for wind power plant reactive power compensation device |
| CN106406272A (en) * | 2016-05-19 | 2017-02-15 | 国网四川省电力公司电力科学研究院 | Method of testing performance of controller of static var generator in wind power plant |
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