CN108767905A - Primary frequency modulation Commissioning Analysis method is carried out based on synchronized phase measurement device data - Google Patents
Primary frequency modulation Commissioning Analysis method is carried out based on synchronized phase measurement device data Download PDFInfo
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- CN108767905A CN108767905A CN201810550883.1A CN201810550883A CN108767905A CN 108767905 A CN108767905 A CN 108767905A CN 201810550883 A CN201810550883 A CN 201810550883A CN 108767905 A CN108767905 A CN 108767905A
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- frequency modulation
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- generating set
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- primary frequency
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The invention discloses one kind carrying out primary frequency modulation Commissioning Analysis method based on synchronized phase measurement device data, includes the following steps：The power and frequency data stream of synchronized phase measurement device synchronous acquisition generating set, then it is sent in computer through interchanger after being packaged the power of generating set and frequency data stream, for computer based on Python/Matlab platforms according to the power and frequency data stream calculation primary frequency modulation regulation performance index of generating set, this method can realize that primary frequency modulation is tested by obtaining high-precision frequency power signal.
Description
Technical field
The invention belongs to field of thermal power, are related to a kind of based on synchronized phase measurement device data progress primary frequency modulation
Commissioning Analysis method.
Background technology
With the publication of the bills such as China's Renewable Energy Law, to renewable energy power generation, fully guarantee property purchases system
It is further perfect, it has been determined that and announcement should must not be less than minimum target to the renewable energy power generation amount of power grid enterprises, fully protect
Protect renewable energy power generation amount.China's proposition reaches 15% to 2020 end of the year non-fossil energy accountings, and the year two thousand thirty reaches 20%.
Wind energy and solar energy are the main force in non-fossil energy again.
However China's wind energy and solar energy resources are concentrated mainly on the ground such as Inner Mongol, Gansu, Qinghai, Xinjiang, wind energy and the sun
There are prodigious unstability for energy generation load itself, therefore have larger impact to local network load.This just promotes northwest electric
Net, Northeast China Power Grid etc. put forward higher requirements the fired power generating unit generated electricity by way of merging two or more grid systems.Primary frequency modulation is responded as electric power grid frequency stabilization
Most rapid most direct means, the dynamics of requirement and examination of the power grid to its performance are also higher and higher.The event of primary frequency modulation
Belong to a millisecond rank, therefore grid requirements respectively generate electricity by way of merging two or more grid systems units' installation synchronized phase measurement device and with Millisecond
Other precision examines unit primary frequency modulation performance.DCS history station for process variable sample rate mostly in seconds, because
This frequency obtained from the sides DCS and changed power curve can not correctly reflect the performance of primary frequency modulation.Primary frequency modulation is debugged at present
Analysis method be all made of the sides DCS and DEH apply rotating speed difference signal, and DCS in real time/history curve in observe generator work(
Rate situation of change.Which is limited to the sample record precision of DCS lateral curvature lines, this second level data is only capable of in load adjustment amplitude
On can make accurate judgement, but adjust the indexs such as deviation, frequency modulation response index, frequency modulation operating lag in amplitude and can not make standard
True judgement.Usually can be up to standard when therefore doing step disturbance experiment, but be possible to because of accuracy of observation error after actually putting into operation
Caused frequency modulation test is not up to standard.
Invention content
It is an object of the invention to overcome the above-mentioned prior art, provide a kind of based on synchronized phase measurement dress
It sets data and carries out primary frequency modulation Commissioning Analysis method, this method can be by obtaining high-precision frequency power signal to realize one
Secondary frequency modulation test.
In order to achieve the above objectives, of the present invention to carry out primary frequency modulation debugging based on synchronized phase measurement device data
Analysis method includes the following steps：The power and frequency data stream of synchronized phase measurement device synchronous acquisition generating set, then
It is sent in computer through interchanger after the power of generating set and frequency data stream are packaged, computer is based on Python/
Matlab platforms are according to the power and frequency data stream calculation primary frequency modulation regulation performance index of generating set.
The sampling resolution of generating set power and frequency data stream is more than or equal to 1s.
Computer is provided with pretreatment average value filtering module based on Python/Matlab platforms, primary frequency modulation event is sentenced
Disconnected module calculates theoretical load curve module, rule match selecting module, frequency modulation action response lag computing module, load sound
Magnitude computation module, load adjustment amplitude error computing module, device electricity weighted integral computing module and comprehensive tune should be adjusted
Frequency index computing module, computer are based on Python/Matlab platforms according to generating set power and frequency data stream calculation one
The concrete operations of secondary frequency modulation regulation performance index are：
Generating set power and frequency data levelling cunning are filtered into 0.2s~1s grades by pretreatment average value filtering module
Data flow, primary frequency modulation event judge module judge whether generating set frequency surpasses according to 0.2s~1s grades of the data flow
Dead zone is crossed, when generating set frequency is more than dead zone and is more than the duration in dead zone, then there is effective primary frequency modulation event,
Then the data flow for isolating effective primary frequency modulation event is cut again, while calculating theoretical load curve module according to machine
The rated load and speed governor droop generative theory load power curve of group；Rule match selecting module determines that local power grid refers to
Mark evaluation algorithms, while frequency modulation action response lag computing module, load responding adjustment magnitude computation module, load adjustment width
Degree deviation computing module and device electricity weighted integral computing module respectively flow into the data of effective primary frequency modulation event
Row pretreatment, comprehensive frequency modulation index computing module lags computing module according to frequency modulation action response, load responding adjusts amplitude meter
Calculate module, load adjustment amplitude error computing module and the pretreated result of device electricity weighted integral computing module, locality
Power grid metrics evaluation algorithm and theoretical load power curve calculate primary frequency modulation regulation performance index, then according to primary frequency modulation
Regulation performance index carries out generating set primary frequency regulation debugging.
Further include：The primary frequency modulation modulability that comprehensive frequency modulation index computing module is calculated is shown by display module
It can index.
Further include：The power and frequency data packet of generating set are generated according to the power of generating set and frequency data stream,
Then the power of the generating set and frequency data packet are sent to through interchanger in computer, computer captures generator
The power and frequency data packet of group, then the power and frequency data packet of generating set are unpacked, obtain the power of generating set
And frequency data stream.
Further include：The power of generating set and frequency data packet are sent to tune by synchronized phase measurement device through interchanger
Degree center.
The invention has the advantages that：
It is of the present invention specifically to be grasped based on synchronized phase measurement device data progress primary frequency modulation Commissioning Analysis method
When making, it is based on by the power and frequency data stream, computer of synchronized phase measurement device synchronous acquisition generating set
Python/Matlab platforms carry out the generation of primary frequency modulation regulation performance index, adopting with very high data precision and superelevation
Sample frequency, frequency signal resolution ratio can reach 20ms, and precision is more up to 0.0025Hz, to which the measurement for avoiding delay from bringing misses
Difference improves the high-acruracy survey of frequency power signal, avoids the regulation performance caused by accuracy of observation error is not up to standard from asking
Topic.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Specific implementation mode
The present invention is described in further detail below in conjunction with the accompanying drawings：
It is of the present invention to carry out primary frequency modulation Commissioning Analysis method based on synchronized phase measurement device data with reference to figure 1
Include the following steps：The power and frequency data stream of synchronized phase measurement device synchronous acquisition generating set, then by generator
The power and frequency data stream of group are sent to through interchanger in computer after being packaged, and computer is based on Python/Matlab platforms
According to the power of generating set and frequency data stream calculation primary frequency modulation regulation performance index, wherein generating set power and frequency
The sampling resolution of rate data flow is more than or equal to 1s.
Computer is provided with pretreatment average value filtering module based on Python/Matlab platforms, primary frequency modulation event is sentenced
Disconnected module calculates theoretical load curve module, rule match selecting module, frequency modulation action response lag computing module, load sound
Magnitude computation module, load adjustment amplitude error computing module, device electricity weighted integral computing module and comprehensive tune should be adjusted
Frequency index computing module, computer are based on Python/Matlab platforms according to generating set power and frequency data stream calculation one
The concrete operations of secondary frequency modulation regulation performance index are：
Generating set power and frequency data levelling cunning are filtered into 0.2s~1s grades by pretreatment average value filtering module
Data flow, primary frequency modulation event judge module judge whether generating set frequency surpasses according to 0.2s~1s grades of the data flow
Dead zone is crossed, when generating set frequency is more than dead zone and is more than the duration in dead zone, then there is effective primary frequency modulation event,
Then the data flow for isolating effective primary frequency modulation event is cut again, while calculating theoretical load curve module according to machine
The rated load and speed governor droop generative theory load power curve of group；Rule match selecting module determines that local power grid refers to
Mark evaluation algorithms, while frequency modulation action response lag computing module, load responding adjustment magnitude computation module, load adjustment width
Degree deviation computing module and device electricity weighted integral computing module respectively flow into the data of effective primary frequency modulation event
Row pretreatment, comprehensive frequency modulation index computing module lags computing module according to frequency modulation action response, load responding adjusts amplitude meter
Calculate module, load adjustment amplitude error computing module and the pretreated result of device electricity weighted integral computing module, locality
Power grid metrics evaluation algorithm and theoretical load power curve calculate primary frequency modulation regulation performance index, then according to primary frequency modulation
Regulation performance index carries out generating set primary frequency regulation debugging.
Further include：The primary frequency modulation modulability that comprehensive frequency modulation index computing module is calculated is shown by display module
It can index.
Further include：The power and frequency data packet of generating set are generated according to the power of generating set and frequency data stream,
Then the power of the generating set and frequency data packet are sent to through interchanger in computer, computer captures generator
The power and frequency data packet of group, then the power and frequency data packet of generating set are unpacked, obtain the power of generating set
And frequency data stream.
Further include：The power of generating set and frequency data packet are sent to tune by synchronized phase measurement device through interchanger
Degree center.
It should be noted that the present invention is based on the crawl of the data packet of Python/Matlab platform developments, processing, frequency modulation meters
It calculates and the results show that the sample frequency with very high data precision and superelevation, frequency signal resolution ratio can reach 20ms,
Precision is more up to 0.0025Hz, and the data for possessing such high resolution ratio and precision are conducive to improve primary frequency modulation debugging efficiency,
And it being capable of the unqualified reason of analyzing and diagnosing unit primary frequency modulation.
Primary frequency modulation debugging efforts test setting parameter independent of traditional step disturbance in the present invention, without online strong
The signals such as rotating speed/speed discrepancy processed, unit normal operation and can put into AGC, primary frequency function when debugging, and will not be to electricity
Net frequency, load supply and demand have additional effect.
Claims (6)
1. one kind based on synchronized phase measurement device data carry out primary frequency modulation Commissioning Analysis method, which is characterized in that including with
Lower step：The power and frequency data stream of synchronized phase measurement device synchronous acquisition generating set, then by the work(of generating set
Rate and frequency data stream are sent to through interchanger in computer after being packaged, and computer is based on Python/Matlab platforms according to hair
The power and frequency data stream calculation primary frequency modulation regulation performance index of motor group.
2. according to claim 1 carry out primary frequency modulation Commissioning Analysis method based on synchronized phase measurement device data,
It is characterized in that, the sampling resolution of generating set power and frequency data stream is more than or equal to 1s.
3. according to claim 1 carry out primary frequency modulation Commissioning Analysis method based on synchronized phase measurement device data,
It is characterized in that, computer is provided with pretreatment average value filtering module based on Python/Matlab platforms, primary frequency modulation event is sentenced
Disconnected module calculates theoretical load curve module, rule match selecting module, frequency modulation action response lag computing module, load sound
Magnitude computation module, load adjustment amplitude error computing module, device electricity weighted integral computing module and comprehensive tune should be adjusted
Frequency index computing module, computer are based on Python/Matlab platforms according to generating set power and frequency data stream calculation one
The concrete operations of secondary frequency modulation regulation performance index are：
Generating set power and frequency data levelling cunning are filtered into 0.2s~1s grades of data by pretreatment average value filtering module
Stream, primary frequency modulation event judge module judge whether generating set frequency is more than dead according to 0.2s~1s grades of the data flow
Then there is effective primary frequency modulation event, then again when generating set frequency is more than dead zone and is more than the duration in dead zone in area
The data flow for isolating effective primary frequency modulation event is cut, while calculating theoretical load curve module according to the specified of unit
Load and speed governor droop generative theory load power curve；Rule match selecting module determines that local power grid metrics evaluation is calculated
Method, while frequency modulation action response lag computing module, load responding adjustment magnitude computation module, load adjustment amplitude error calculate
Module and device electricity weighted integral computing module respectively pre-process the data flow of effective primary frequency modulation event, comprehensive
It closes frequency modulation index computing module and computing module, load responding adjustment magnitude computation module, load is lagged according to frequency modulation action response
It adjusts amplitude error computing module and the pretreated result of device electricity weighted integral computing module, local power grid metrics evaluation is calculated
Method and theoretical load power curve calculate primary frequency modulation regulation performance index, are then carried out according to primary frequency modulation regulation performance index
Generating set primary frequency regulation is debugged.
4. according to claim 3 carry out primary frequency modulation Commissioning Analysis method based on synchronized phase measurement device data,
It is characterized in that, further includes：The primary frequency modulation modulability that comprehensive frequency modulation index computing module is calculated is shown by display module
It can index.
5. according to claim 1 carry out primary frequency modulation Commissioning Analysis method based on synchronized phase measurement device data,
It is characterized in that, further includes：The power and frequency data packet of generating set are generated according to the power of generating set and frequency data stream,
Then the power of the generating set and frequency data packet are sent to through interchanger in computer, computer captures generating set
Power and frequency data packet, then the power and frequency data packet of generating set are unpacked, obtain generating set power and
Frequency data stream.
6. according to claim 5 carry out primary frequency modulation Commissioning Analysis method based on synchronized phase measurement device data,
It is characterized in that, further includes：The power of generating set and frequency data packet are sent to tune by synchronized phase measurement device through interchanger
Degree center.
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| CN111551851A (en) * | 2020-05-13 | 2020-08-18 | 贵州电网有限责任公司 | Energy storage power generation side primary frequency modulation static test system and test analysis method |
| CN112633676A (en) * | 2020-12-21 | 2021-04-09 | 贵州电网有限责任公司 | Install in hydroelectric generating set primary frequency modulation examination and evaluation system of power plant side |
| CN114188993A (en) * | 2021-11-05 | 2022-03-15 | 华能澜沧江水电股份有限公司 | Self-diagnosis-based self-adaptive switching method for primary frequency modulation adjusting parameters |
| CN117311300A (en) * | 2023-11-29 | 2023-12-29 | 西安热工研究院有限公司 | Method and device for dynamically adjusting sampling frequency of distributed control system and electronic equipment |
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| CN117311300A (en) * | 2023-11-29 | 2023-12-29 | 西安热工研究院有限公司 | Method and device for dynamically adjusting sampling frequency of distributed control system and electronic equipment |
| CN117311300B (en) * | 2023-11-29 | 2024-02-13 | 西安热工研究院有限公司 | Method and device for dynamically adjusting sampling frequency of distributed control system and electronic equipment |
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