CN113219278A - 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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Abstract
The invention discloses a primary frequency modulation test system and method for a new energy station, wherein an analog output source is used for simulating the output of current and voltage of a grid-connected point and triggering a primary frequency modulation device to act; the message and wave recording integrated acquisition device is used for acquiring network messages and fault wave recording of the grid-connected point; the simulation master station is used for loading a primary frequency modulation online monitoring information model, carrying out information interaction with a primary frequency modulation device by using IEC104 or IEC61850 MMS, actively initiating a remote control and remote modulation instruction, 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 information interaction between the new energy station and the primary frequency modulation device by 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; and the test interactive interface end is used for calling an interface of the functional module according to a 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, and has flexible and convenient test means and reliable test result.
Description
Technical Field
The invention relates to a primary frequency modulation testing system and method for a new energy station, and belongs to the technical field of power system automation.
Background
With the continuous expansion of the installed scale of new energy and the continuous increase of the external calls, the power system has structural difficulties such as reduction of rotational inertia, difficulty in frequency control and the like, and the safety of the power system has serious threats. In order to prevent the power grid from sudden high-power shortage to cause low-frequency load shedding action, large-area power failure events and guarantee safe and stable operation of the power grid, the requirement that a primary frequency modulation function is deployed in a new energy station is provided.
At present, standard specifications have requirements on primary frequency modulation functions and performances of a new energy station, but no good testing technical means exists in primary frequency modulation testing at present. In the prior art, partial function tests are carried out on the primary frequency modulation test by means of a general 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 primary frequency modulation test system solution of a new energy station is lacked.
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 testing system and a primary frequency modulation testing method for a new energy station.
The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a primary frequency modulation test system of a new energy station comprises the following modules: the system comprises an analog quantity output source, a message and wave recording integrated acquisition device, an analog master station, a communication server and a test interactive interface;
and the analog quantity output source is used for simulating the output of the current and the voltage of the grid-connected point and triggering the primary frequency modulation device to act.
The message and wave recording integrated acquisition device is used for acquiring network messages and fault wave recording of the grid-connected point.
The simulation master station is used for loading a primary frequency modulation online monitoring information model, carrying out information interaction with a primary frequency modulation device through IEC104 or IEC61850 MMS, actively initiating remote control and remote control instructions, and recording remote control and remote measurement information in real time.
The communication server is used for loading the primary frequency modulation information point table, simulating information interaction between the new energy station and the primary frequency modulation device through IEC104, Modbus TCP or IEC61850 GOOSE, passively responding to an adjusting instruction initiated by the primary frequency modulation device and feeding back a target value.
And the test interactive interface end is used for calling the interfaces of the analog output source, the message and wave recording integrated acquisition device, the simulation master station and the functional module of the communication service end according to the test items of the primary frequency modulation device, returning test record data and automatically generating a test report.
As a preferred scheme, the analog quantity output source has the functions of simulating the processes of frequency up-folding and down-disturbing, outputting the sequence state, applying a harmonic-free and harmonic-free analog source and playing back the real fault waveform.
As a preferred scheme, the message and wave recording integrated acquisition device automatically analyzes information and extracts a timestamp, tests the response time performance index of the primary frequency modulation device, has a time synchronization function, acquires the current and voltage of a grid-connected point, calculates the active power and frequency, and records an absolute timestamp of the frequency change moment; collecting network messages through a mirror image port of a switch, automatically analyzing the messages according to a configuration information point table and extracting a timestamp; and automatically calculating the time difference from the frequency change moment to the power regulation output according to the engineering configuration information.
Preferably, the new energy source station is arranged as a fan energy management system or a photovoltaic inverter.
As a preferred scheme, the message and wave recording integrated acquisition device adopts a portable device.
A primary frequency modulation testing method for a new energy station comprises the following steps:
calling an output current and voltage of an analog output source interface, triggering information change of a communication server, and checking primary frequency modulation online monitoring information at an analog master station to obtain a test result;
calling the output sequence change frequency of an analog output source interface, recording the receiving frequency in the analog master station, and performing precision comparison on the receiving frequency and the triggering frequency to obtain a test result;
calling an analog output source interface to output a preset frequency value, recording a primary frequency modulation analog frequency and a primary frequency modulation analog load instruction at an analog master station, and comparing according to a droop curve calculation value to obtain a test result;
triggering the simulation master station to issue a primary frequency modulation entering test command, respectively issuing a simulation frequency, a primary frequency modulation load increase/decrease and characteristic parameter test command, and recording a feedback value in real time to form a test record;
triggering an analog master station to issue an AGC adjustment instruction, calling an analog output source interface to output a preset frequency value, recording a power adjustment target value at a communication service end, and forming a test record according to an AGC coordination strategy;
calling an analog output source interface to output preset high and low penetration voltage values or real short-circuit fault waveforms, and recording primary frequency modulation related signal values in a simulation master station to form a test result;
calling an analog output source interface to output a preset primary frequency modulation action frequency lower than x% of rated power, and recording primary frequency modulation related signals at a simulation 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 online monitoring information comprises remote signaling and remote measuring signals.
Preferably, the adjustment threshold is set to 20%.
Has the advantages that: the primary frequency modulation testing system and method for the new energy station provided by the invention can be used for testing the primary frequency modulation function of the new energy station, can be used for laboratory detection and field testing, and is flexible and convenient in testing means and reliable in testing 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 for a photovoltaic power plant according to the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
The invention provides a primary frequency modulation test system of a new energy station, which comprises: the system comprises an analog output source, a message and wave recording integrated acquisition device, an analog master station, a communication server and a test interactive interface. The specific functions are as follows:
the analog quantity output source is used for simulating the current and voltage output of a grid-connected point, triggering the action of the primary frequency modulation device, and has the functions of simulating the frequency up-and-down-disturbing process, outputting the sequence state, applying a harmonic-free and harmonic-free analog source, replaying the real fault waveform and the like.
The message and wave recording integrated acquisition device is used for acquiring network messages and fault wave recording of a grid-connected point, automatically analyzing information and extracting a timestamp, testing the response time performance index of a primary frequency modulation device, adopting a portable device with a time synchronization function, acquiring current and voltage of the grid-connected point, calculating active power and frequency, and recording an absolute timestamp of the frequency change moment; collecting network messages through a mirror image port of a switch, automatically analyzing the messages according to a configuration information point table and extracting a timestamp; and automatically calculating the time difference from the frequency change moment to the power regulation output according to the engineering configuration information.
And the simulation master station is used for loading the primary frequency modulation online monitoring information model, carrying out information interaction with the primary frequency modulation device by using IEC104 or IEC61850 MMS, actively initiating remote control and remote modulation instructions, and recording remote signaling and remote measurement information in real time.
And the communication server is used for loading the primary frequency modulation information point table, simulating a fan function management system or a photovoltaic inverter (PCS) to perform information interaction with the primary frequency modulation device by IEC104, Modbus TCP or IEC61850 GOOSE, passively responding to a regulation instruction initiated by the primary frequency modulation device and feeding back a target value.
And the test interactive interface end is used for calling the interfaces of the analog output source, the message and wave recording integrated acquisition device, the simulation master station and the functional module of the communication service end 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 human-computer 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 output source interface to output current and voltage, triggering information change of a communication server, and checking primary frequency modulation online monitoring information including remote signaling and remote measuring signals at an analog master station;
secondly, testing the frequency precision of the primary frequency modulation device, calling the output sequence change frequency of an analog output source interface, recording the receiving frequency in the analog master station, and performing precision comparison on the receiving frequency and the triggering frequency;
thirdly, testing the primary frequency modulation function of the primary frequency modulation device, calling an analog output source interface to output a preset frequency value, recording the primary frequency modulation analog frequency and a primary frequency modulation analog load instruction at an analog master station, and comparing the primary frequency modulation analog frequency and the primary frequency modulation analog load instruction according to a droop curve calculated value to obtain a test result;
step four, realizing the primary frequency modulation on-line monitoring of the primary frequency modulation device, triggering the simulation master station to issue a primary frequency modulation entering test command, and respectively issuing commands of simulation frequency, primary frequency modulation load increase/decrease, characteristic parameter test and the like, and recording a feedback value in real time to form a test record;
step five, realizing AGC coordination control test of the primary frequency modulation device, triggering an analog master station to issue an AGC adjustment instruction, calling an analog output source interface to output a preset frequency value, recording a power adjustment target value at a communication service end, and forming a test record according to an AGC coordination strategy;
step six, the anti-gathering test of the primary frequency modulation device is realized, an analog output source interface is called to output preset high and low penetration voltage values or real short-circuit fault waveforms, and primary frequency modulation related signal values are recorded in the simulation master station to form a test result;
seventhly, locking test of a primary frequency modulation function of the primary frequency modulation device is realized, an analog output source interface is called to output preset primary frequency modulation action frequency lower than 20% of rated power, and primary frequency modulation related signals are recorded in the 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.
Example (b):
as shown in fig. 1-2, the primary frequency modulation device of the photovoltaic unit is tested corresponding to the wind turbine generator set in the new energy station, and when the system is used, a primary frequency modulation test system of the new energy station is set up, the primary frequency modulation test system of the new energy station is connected with the primary frequency modulation device through hard wiring to control output current and voltage, and is connected with the primary frequency modulation device through a network cable to realize network information interaction. And performing various test items of the primary frequency modulation device.
The above description is only of the preferred embodiments of the present invention, and it should be 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 invention and these are intended to be within the scope of the invention.
Claims (8)
1. The utility model provides a new forms of energy station primary control test system which characterized in that: the system comprises the following modules: the system comprises an analog quantity output source, a message and wave recording integrated acquisition device, an analog master station, a communication server and a test interactive interface;
the analog quantity output source is used for simulating the output of current and voltage of a grid-connected point and triggering the primary frequency modulation device to act;
the message and wave recording integrated acquisition device is used for acquiring network messages and fault wave recording of the grid-connected point;
the simulation master station is used for loading a primary frequency modulation online monitoring information model, carrying out information interaction with a primary frequency modulation device by using IEC104 or IEC61850 MMS, actively initiating a remote control and remote modulation instruction, 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 information interaction between the new energy station and the primary frequency modulation device by 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;
and the test interactive interface end is used for calling the interfaces of the analog output source, the message and wave recording integrated acquisition device, the simulation master station and the functional module of the communication service end according to the test items of the primary frequency modulation device, returning test record data and automatically generating a test report.
2. The primary frequency modulation test system of the new energy station according to claim 1, characterized in that: the analog quantity output source has the functions of simulating the frequency up-and-down-disturbing process, outputting the sequence state, applying a harmonic-free and harmonic-free analog source and replaying the real fault waveform.
3. The primary frequency modulation test system of the new energy station according to claim 1, characterized in that: the message and wave recording integrated acquisition device automatically analyzes information and extracts a timestamp, tests the response time performance index of the primary frequency modulation device, has a time synchronization function, acquires the current and voltage of a grid-connected point, calculates the active power and frequency, and records the absolute timestamp of the frequency change moment; collecting network messages through a mirror image port of a switch, automatically analyzing the messages according to a configuration information point table and extracting a timestamp; and automatically calculating the time difference from the frequency change moment to the power regulation output according to the engineering configuration information.
4. The primary frequency modulation test system of the new energy station according to claim 1, characterized in that: the new energy station is arranged as a fan energy management system or a photovoltaic inverter.
5. The primary frequency modulation test system of the new energy station according to claim 1, characterized in that: the message and wave recording integrated acquisition device adopts a portable device.
6. The method for testing the primary frequency modulation test system of the new energy station according to any one of claims 1 to 6, wherein: the method comprises the following steps:
calling an output current and voltage of an analog output source interface, triggering information change of a communication server, and checking primary frequency modulation online monitoring information at an analog master station to obtain a test result;
calling the output sequence change frequency of an analog output source interface, recording the receiving frequency in the analog master station, and performing precision comparison on the receiving frequency and the triggering frequency to obtain a test result;
calling an analog output source interface to output a preset frequency value, recording a primary frequency modulation analog frequency and a primary frequency modulation analog load instruction at an analog master station, and comparing according to a droop curve calculation value to obtain a test result;
triggering the simulation master station to issue a primary frequency modulation entering test command, respectively issuing a simulation frequency, a primary frequency modulation load increase/decrease and characteristic parameter test command, and recording a feedback value in real time to form a test record;
triggering an analog master station to issue an AGC adjustment instruction, calling an analog output source interface to output a preset frequency value, recording a power adjustment target value at a communication service end, and forming a test record according to an AGC coordination strategy;
calling an analog output source interface to output preset high and low penetration voltage values or real short-circuit fault waveforms, and recording primary frequency modulation related signal values in a simulation master station to form a test result;
calling an analog output source interface to output a preset primary frequency modulation action frequency lower than x% of rated power, and recording primary frequency modulation related signals at a simulation 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.
7. The test method of claim 6, wherein: the primary frequency modulation online monitoring information comprises remote signaling and remote measuring signals.
8. The test method of claim 6, wherein: the adjustment threshold is set to 20%.
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