CN113219278B - Primary frequency modulation test system and method for new energy station - Google Patents
Primary frequency modulation test system and method for new energy station Download PDFInfo
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- CN113219278B CN113219278B CN202110424390.5A CN202110424390A CN113219278B CN 113219278 B CN113219278 B CN 113219278B CN 202110424390 A CN202110424390 A CN 202110424390A CN 113219278 B CN113219278 B CN 113219278B
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Abstract
The invention discloses a primary frequency modulation test system and a primary frequency modulation test method for a new energy station, wherein an analog output source is used for simulating grid-connected point current and voltage output and triggering a primary frequency modulation device to act; the message and recording integrated acquisition device is used for acquiring network messages of grid-connected points and fault recording; the simulation master station is used for loading a primary frequency modulation on-line monitoring information model, performing information interaction with a primary frequency modulation device by using IEC104 or IEC61850 MMS, actively initiating remote control and remote adjustment instructions, and recording remote signaling and remote measurement information in real time; the communication server is used for loading a primary frequency modulation information point table, simulating a new energy station to perform information interaction with the primary frequency modulation device through IEC104, modbus TCP or IEC61850 GOOSE, passively responding to an adjustment instruction initiated by the primary frequency modulation device and feeding back a target value; the test interaction interface end is used for calling the interface of the functional module according to the test item of the primary frequency modulation device, returning test record data and automatically generating a test report. The invention is used for laboratory detection and field test, the test means is flexible and convenient, and the test result is reliable.
Description
Technical Field
The invention relates to a primary frequency modulation test system and method for a new energy station, and belongs to the technical field of power system automation.
Background
Along with the continuous expansion of the installation scale of new energy, the incoming call outside the area is continuously increased, the power system faces structural dilemma such as moment of inertia reduction and difficult frequency control, and the safety of the power system faces serious threat. In order to prevent the low-frequency load shedding action caused by sudden high-power shortage of the power grid from causing a large-area power failure event and ensure the safe and stable operation of the power grid, the requirement of deploying a primary frequency modulation function of a new energy station is provided.
At present, standard specifications provide requirements for primary frequency modulation functions and performances of new energy stations, but at present, primary frequency modulation tests have no better test technical means. In the prior art, for primary frequency modulation test, a part of functional test is carried out by means of a universal electric tester, the manual configuration workload is large, the automation degree is low, some test items of a limited test instrument cannot be carried out, and a complete set of new energy station primary frequency modulation test system solution is lacking.
Disclosure of Invention
The purpose is as follows: in order to overcome the defects in the prior art, the invention provides a primary frequency modulation test system and method for a new energy station.
The technical scheme is as follows: in order to solve the technical problems, the invention adopts the following technical scheme:
a primary frequency modulation test system of a new energy station comprises the following modules: the system comprises an analog output source, a message and recording integrated acquisition device, an analog master station, a communication server and a test interaction interface;
the analog output source is used for simulating grid-connected point current and voltage output and triggering the primary frequency modulation device to act.
The message and recording integrated acquisition device is used for acquiring network messages of grid-connected points and fault recording.
The simulation master station is used for loading a primary frequency modulation on-line monitoring information model, the simulation master station performs information interaction with a primary frequency modulation device through IEC104 or IEC61850 MMS, actively initiates remote control and remote adjustment instructions, and records remote signaling and remote measurement information in real time.
The communication server is used for loading a primary frequency modulation information point table, simulating a new energy station to perform information interaction with the primary frequency modulation device through IEC104, modbus TCP or IEC61850 GOOSE, passively responding to an adjustment instruction initiated by the primary frequency modulation device and feeding back a target value.
The test interactive interface end is used for calling interfaces of the function modules of the analog output source, the message and recording integrated acquisition device, the simulation master station and the communication server according to the test items of the primary frequency modulation device, returning test record data and automatically generating a test report.
As an optimal scheme, the analog quantity output source has the functions of simulating a frequency scrambling and scrambling process, outputting a sequence state, applying a non-harmonic and harmonic analog source and replaying a real fault waveform.
As a preferable scheme, the message and recording integrated acquisition device automatically analyzes the information extraction time stamp, tests the response time performance index of the primary frequency modulation device, has a time synchronization function, acquires the current and voltage of the grid-connected point to calculate the active power and the frequency, and records the absolute time stamp of the frequency change moment; collecting network messages through a switch mirror image port, automatically analyzing the messages according to a configuration information point table and extracting a time stamp; and automatically calculating the time difference from the frequency change moment to the power adjustment output according to the engineering configuration information.
Preferably, the new energy station is set as a fan energy system or a photovoltaic inverter.
As a preferable scheme, the message and recording integrated acquisition device adopts a portable device.
A primary frequency modulation test method for a new energy station comprises the following steps:
step one, calling an analog output source interface to output current and voltage, triggering the information change of a communication server, and checking primary frequency modulation on-line monitoring information in a simulation master station to obtain a test result;
step two, calling an analog quantity output source interface to output a sequence change frequency, recording a receiving frequency in an analog master station, and comparing the receiving frequency with a trigger frequency in precision to obtain a test result;
step three, calling an analog quantity output source interface to output a preset frequency value, recording a primary frequency modulation simulation frequency and a primary frequency modulation simulation load instruction at a simulation master station, and comparing according to a sagging curve calculated value to obtain a test result;
triggering the simulation master station to issue a primary frequency modulation entering test command, and respectively issuing simulation frequency, primary frequency modulation load increase/decrease and characteristic parameter test commands, and recording feedback values in real time to form a test record;
triggering the simulation master station to issue an AGC regulation command, calling an analog output source interface to output a preset frequency value, recording a power regulation target value at a communication server, and forming a test record according to an AGC coordination strategy;
step six, calling an analog quantity output source interface to output a preset high-low voltage value or a real short-circuit fault waveform, and recording a primary frequency modulation related signal value in the analog master station to form a test result;
step seven, calling an analog output source interface to output a preset primary frequency modulation action frequency which is lower than x% rated power, and recording a primary frequency modulation related signal in an analog master station to form a test result; x% is the adjustment threshold;
and step eight, automatically forming a test report according to the test record corresponding to the test.
Preferably, the primary frequency modulation on-line monitoring information comprises remote signaling and telemetry signals.
Preferably, the adjustment threshold is set to 20%.
The beneficial effects are that: the primary frequency modulation test system and the primary frequency modulation test method for the new energy station, provided by the invention, are used for testing the primary frequency modulation function of the new energy station, can be used for laboratory detection and field test, are flexible and convenient in test means, and are reliable in test result.
Drawings
FIG. 1 is a schematic diagram of a test system for a wind farm according to the present invention;
fig. 2 is a schematic diagram of a test system suitable for use in a photovoltaic power station according to the present invention.
Detailed Description
The invention will be further described with reference to specific examples.
The invention provides a primary frequency modulation test system of a new energy station, which comprises the following components: the system comprises an analog output source, a message and recording integrated acquisition device, an analog master station, a communication service end and a test interaction interface end. The specific functions are as follows:
the analog output source is used for simulating grid-connected point current and voltage output, triggering the primary frequency modulation device to act, and has the functions of simulating frequency up-disturbance and down-disturbance processes, outputting sequence states, applying non-harmonic and harmonic analog sources, replaying real fault waveforms and the like.
The message and wave recording integrated acquisition device is used for acquiring network messages and fault wave recording of grid-connected points, automatically analyzing information to extract time stamps, testing response time performance indexes of the primary frequency modulation device, adopting a portable device, having a time synchronization function, acquiring current and voltage of the grid-connected points to calculate active power and frequency, and recording time absolute time stamps of frequency change; collecting network messages through a switch mirror image port, automatically analyzing the messages according to a configuration information point table and extracting a time stamp; and automatically calculating the time difference from the frequency change moment to the power adjustment output according to the engineering configuration information.
The simulation master station is used for loading a primary frequency modulation on-line monitoring information model, performing information interaction with the primary frequency modulation device through IEC104 or IEC61850 MMS, actively initiating remote control and remote adjustment instructions, and recording remote signaling and remote measurement information in real time.
The communication server is used for loading a primary frequency modulation information point table, simulating a wind turbine system or a photovoltaic inverter (PCS) to perform information interaction with the primary frequency modulation device through IEC104, modbus TCP or IEC61850 GOOSE, and passively responding to an adjustment instruction initiated by the primary frequency modulation device and feeding back a target value.
And the test interaction interface end is used for calling interfaces of the analog output source, the message and recording integrated acquisition device, the simulation master station and the functional module of the communication server according to the test items of the primary frequency modulation device, returning test record data and automatically generating a test report. And providing a visual man-machine interaction interface.
Based on the system, the invention provides a method for testing primary frequency modulation of a new energy station, which comprises the following steps:
firstly, checking signals of a primary frequency modulation device, calling an analog quantity output source interface to output current and voltage, triggering information change of a communication server, and checking primary frequency modulation on-line monitoring information including remote signaling and telemetering signals at an analog master station;
step two, realizing the frequency precision test of the primary frequency modulation device, calling the analog output source interface to output the sequence change frequency, recording the receiving frequency in the analog master station, and comparing the accuracy of the receiving frequency with the trigger frequency;
step three, realizing primary frequency modulation function test of the primary frequency modulation device, calling an analog output source interface to output a preset frequency value, recording primary frequency modulation analog frequency and a primary frequency modulation analog load instruction at the analog master station, and comparing according to a sagging curve calculated value to obtain a test result;
step four, realizing the online monitoring of the primary frequency modulation device, triggering the simulation master station to issue a primary frequency modulation entering test command, respectively issuing commands such as simulation frequency, primary frequency modulation load increase/decrease, characteristic parameter test and the like, and recording feedback values in real time to form a test record;
step five, realizing AGC coordination control test of the primary frequency modulation device, triggering the analog master station to issue an AGC regulation command, calling an analog output source interface to output a preset frequency value, recording a power regulation target value at a communication server, and forming a test record according to an AGC coordination strategy;
step six, realizing the anti-gathering test of the primary frequency modulation device, calling an analog output source interface to output a preset high-low voltage value or a real short-circuit fault waveform, and recording a primary frequency modulation related signal value in the analog master station to form a test result;
step seven, realizing the primary frequency modulation function locking test of the primary frequency modulation device, calling an analog output source interface to output a primary frequency modulation action frequency which is preset to be lower than 20% of rated power, and recording a primary frequency modulation related signal in an analog master station to form a test result;
and step eight, automatically forming a test report according to the test record corresponding to the test.
Examples:
as shown in fig. 1-2, the primary frequency modulation devices corresponding to the wind turbine generator systems and the photovoltaic turbine generator systems in the new energy station are tested respectively, and when the system is used, a primary frequency modulation test system of the new energy station is built, the primary frequency modulation test system of the new energy station is connected with the primary frequency modulation device through hard wiring control output current and output voltage, and network information interaction is achieved through connection of network wires with the primary frequency modulation device. And performing various test items of the primary frequency modulation device.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (7)
1. A test method of a primary frequency modulation test system of a new energy station is characterized by comprising the following steps: the primary frequency modulation test system of the new energy station comprises the following modules: the system comprises an analog output source, a message and recording integrated acquisition device, an analog master station, a communication server and a test interaction interface;
the analog output source is used for simulating grid-connected point current and voltage output and triggering a primary frequency modulation device to act;
the message and recording integrated acquisition device is used for acquiring network messages of grid-connected points and fault recording;
the simulation master station is used for loading a primary frequency modulation on-line monitoring information model, performing information interaction with a primary frequency modulation device by using IEC104 or IEC61850 MMS, actively initiating remote control and remote adjustment instructions, and recording remote signaling and remote measurement information in real time;
the communication server is used for loading a primary frequency modulation information point table, simulating a new energy station to perform information interaction with the primary frequency modulation device through IEC104, modbus TCP or IEC61850 GOOSE, passively responding to an adjustment instruction initiated by the primary frequency modulation device and feeding back a target value;
the test interaction interface end is used for calling interfaces of the function modules of the analog output source, the message and recording integrated acquisition device, the simulation master station and the communication server according to the test items of the primary frequency modulation device, returning test record data and automatically generating a test report;
the test method comprises the following steps:
step one, calling an analog output source interface to output current and voltage, triggering the information change of a communication server, and checking primary frequency modulation on-line monitoring information in a simulation master station to obtain a test result;
step two, calling an analog quantity output source interface to output a sequence change frequency, recording a receiving frequency in an analog master station, and comparing the receiving frequency with a trigger frequency in precision to obtain a test result;
step three, calling an analog quantity output source interface to output a preset frequency value, recording a primary frequency modulation simulation frequency and a primary frequency modulation simulation load instruction at a simulation master station, and comparing according to a sagging curve calculated value to obtain a test result;
triggering the simulation master station to issue a primary frequency modulation entering test command, and respectively issuing simulation frequency, primary frequency modulation load increase/decrease and characteristic parameter test commands, and recording feedback values in real time to form a test record;
triggering the simulation master station to issue an AGC regulation command, calling an analog output source interface to output a preset frequency value, recording a power regulation target value at a communication server, and forming a test record according to an AGC coordination strategy;
step six, calling an analog quantity output source interface to output a preset high-low voltage value or a real short-circuit fault waveform, and recording a primary frequency modulation related signal value in the analog master station to form a test result;
step seven, calling an analog output source interface to output a preset primary frequency modulation action frequency which is lower than x% rated power, and recording a primary frequency modulation related signal in an analog master station to form a test result; x% is the adjustment threshold;
and step eight, automatically forming a test report according to the test record corresponding to the test.
2. The test method according to claim 1, wherein: the primary frequency modulation on-line monitoring information comprises remote signaling and telemetering signals.
3. The test method according to claim 1, wherein: the adjustment threshold is set to 20%.
4. The test method according to claim 1, wherein: the analog output source has the functions of simulating the frequency up-disturbance and down-disturbance processes, outputting sequence states, applying non-harmonic and harmonic analog sources and replaying real fault waveforms.
5. The test method according to claim 1, wherein: the message and recording integrated acquisition device automatically analyzes the information extraction time stamp, tests the response time performance index of the primary frequency modulation device, has a time synchronization function, acquires the current and voltage of the grid-connected point to calculate the active power and the frequency, and records the absolute time stamp of the frequency change moment; collecting network messages through a switch mirror image port, automatically analyzing the messages according to a configuration information point table and extracting a time stamp; and automatically calculating the time difference from the frequency change moment to the power adjustment output according to the engineering configuration information.
6. The test method according to claim 1, wherein: the new energy station is set as a fan energy system or a photovoltaic inverter.
7. The test method according to claim 1, wherein: the message and recording integrated acquisition device adopts a portable device.
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| CN114924545A (en) * | 2022-04-15 | 2022-08-19 | 国网新疆电力有限公司电力科学研究院 | Test method, device, test equipment and medium for primary frequency modulation device |
| CN115065167B (en) * | 2022-07-15 | 2023-10-20 | 国网江苏省电力有限公司 | Primary frequency modulation on-line monitoring system for new energy station |
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| CN110098622B (en) * | 2018-01-31 | 2021-04-13 | 北京金风科创风电设备有限公司 | Primary frequency modulation method and device for wind turbine generator |
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