CN109725214A - A kind of energy-accumulating power station primary frequency modulation Online Transaction Processing and method - Google Patents
A kind of energy-accumulating power station primary frequency modulation Online Transaction Processing and method Download PDFInfo
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Abstract
The invention discloses a kind of energy-accumulating power station primary frequency modulation Online Transaction Processing and methods, wherein test macro includes scheduling station and energy-accumulating power station, scheduling station includes AGC/ primary frequency modulation server and front server, energy-accumulating power station includes data communication gateway machine, monitoring host computer, current transformer, with energy-storage battery and its monitoring system, AGC/ primary frequency modulation server initiates test instruction to energy-accumulating power station, current transformer is according to test instruction and preset primary frequency modulation characterisitic parameter function, calculate the active power of energy-accumulating power station, and acquire busbar voltage frequency, then this will send in calculated result and acquisition data to scheduling station, and then judge the primary frequency modulation performance of energy-accumulating power station.In the present invention, scheduling station side is with energy-accumulating power station side by interacting a series of control instructions, and for carrying out the online grid connection test of energy-accumulating power station primary frequency function and performance, compared to traditional off-line test method, test result is more accurate and reliable.
Description
Technical field
The present invention relates to a kind of energy-accumulating power station primary frequency modulation Online Transaction Processing and methods, belong to Automation of Electric Systems skill
Art field.
Background technique
With the high speed development of battery technology, energy-accumulating power station has come into the Fast Construction stage, and energy-accumulating power station has double
To the function of power control, power control has the characteristics that fast, accurate and stable.Currently, primary tune of each standard criterion to energy-accumulating power station
Frequency function is proposed requirement, but primary frequency modulation test at present is all offline off-grid independent test, the reliability of test data
Deficiency does not play the role of relating to net test.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of existing technologies, a kind of energy-accumulating power station primary frequency modulation is provided
Online Transaction Processing and method, based on after energy storage power station grid connection, to energy-accumulating power station various operating statuses primary frequency function
It is tested, test result is more accurate and reliable.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of energy-accumulating power station primary frequency modulation Online Transaction Processing, including scheduling station and energy-accumulating power station；The scheduling station includes
AGC/ primary frequency modulation server and front server；The energy-accumulating power station includes data communication gateway machine, monitoring host computer, unsteady flow
Device and energy-storage battery and its monitoring system；
The AGC/ primary frequency modulation server and front server pass through the network connection of scheduling station local area network；The scheduling master
The front server stood is connected with the data communication gateway machine of energy-accumulating power station with dispatch data net；The data of the energy-accumulating power station are logical
Letter gateway machine, monitoring host computer are connected with current transformer by station level network；The monitoring system of the current transformer and energy-storage battery is logical
The mode for crossing network or serial ports connects；The current transformer is connected with energy-storage battery by cable.
AGC/ primary frequency modulation server above-mentioned has AGC and primary frequency function；The AGC/ primary frequency modulation server
Test instruction is initiated to front server, test instruction is forwarded to data communication gateway machine, the number by the front server
The test received instruction is forwarded to monitoring host computer, the monitoring host computer acquisition current transformer and energy-storage battery according to communication network shutdown
Monitoring system information, differentiate the operating status of the monitoring system of current transformer and energy-storage battery, and test instruction is forwarded to
Each current transformer, according to test instruction and preset primary frequency modulation characterisitic parameter function, calculate energy-accumulating power station has the current transformer
Function power, and acquire busbar voltage frequency, then this by calculated result and acquisition data by sent on data communication gateway machine to
Scheduling station.
Primary frequency modulation characterisitic parameter function above-mentioned includes following parameter:
Amplitude limit value: for the limit value of current transformer power adjustment instruction when primary frequency modulation is tested, the power tune of current transformer primary frequency modulation
Whole picture degree needs to be less than the limit value；
Frequency dead band: the threshold value of primary frequency modulation test and primary frequency modulation movement, the bus electricity of current transformer acquisition are carried out for current transformer
When voltage-frequency rate is more than the threshold value, current transformer primary frequency modulation can just be acted；
Speed governor droop: for the slope of curve in energy-accumulating power station primary frequency modulation characterisitic parameter function.
A kind of energy-accumulating power station primary frequency modulation on-line testing method, comprising the following steps:
1) test macro is put up, scheduling station and the normal interactive instruction of energy-accumulating power station and signal are enable；
2) under the various operating conditions of energy-accumulating power station, scheduling station sends primary frequency modulation to energy-accumulating power station and enters test instruction,
The energy-accumulating power station primary frequency modulation of scheduling station control at this time enters test；After certain interval of time, scheduling station is sent out to energy-accumulating power station
Primary frequency modulation is sent to increase Road test instruction or the test instruction of primary frequency modulation load shedding；Primary frequency modulation increases Road test instruction or primary
Certain interval of time after the test instruction of frequency modulation load shedding issues, scheduling station exit test to energy-accumulating power station transmission primary frequency modulation and refer to
It enables；The energy-accumulating power station primary frequency modulation of scheduling station control at this time exits test；
3) primary frequency modulation that data communication gateway machine receives scheduling station transmission increases Road test instruction or primary frequency modulation load shedding
Test instruction is forwarded to monitoring host computer by test instruction, and monitoring host computer will test instruction hair according to the operating status of each current transformer
It send to each current transformer of energy-accumulating power station；
4) current transformer is instructed according to test carries out primary frequency modulation increasing Road test or the test of primary frequency modulation load shedding, test process
In, according to primary frequency modulation characterisitic parameter function, the performance number that current current transformer needs to adjust is calculated, then adjusts current transformer
Operating status, be adjusted to object run power；
5) in the real-time acquisition station of monitoring host computer each current transformer active power, calculate the primary frequency modulation performance parameter of current transformer, together
When according to the operating status of current transformer, the performance number of current transformer is added, and by data communication gateway machine by real-time wattful power
It is sent in rate to scheduling station；
6) scheduling station receives the real-time active power sent on energy-accumulating power station, according to the rated power of energy-accumulating power station, calculates energy storage
The frequency modulation performance parameter in power station, judges whether energy-accumulating power station has primary frequency modulation performance, and judges whether primary frequency modulation performance is full
The requirement of foot specification, standard and administrative provisions.
In step 2 above-mentioned, operating condition includes: standby energy-accumulating power station, charging, electric discharge and shutdown and energy-accumulating power station
In low state-of-charge, middle state-of-charge and highly charged state.
In step 4) above-mentioned, the primary frequency modulation increases Road test and refers to that current transformer simulation is lower than a certain frequency of 50Hz
Rate, current transformer carry out increasing Road test；The primary frequency modulation load shedding test refers to that current transformer simulation is higher than a certain frequency of 50Hz
Rate, current transformer carry out load shedding test.
The time of step 2 above-mentioned is within 10 seconds.
The primary frequency modulation of step 2 above-mentioned enter test instruction and step 4) primary frequency modulation exit test instruction be it is distant
Signal is controlled, telecommand is " 1 " Shi Daibiao " primary frequency modulation enters test ", and telecommand is that " primary frequency modulation exits " 0 " Shi Daibiao
Test ".
In step 3) above-mentioned, primary frequency modulation increases Road test instruction and primary frequency modulation load shedding test instruction as remote control letter
Number, telecommand is " 1 " Shi Daibiao " primary frequency modulation increasing Road test ", and telecommand is " 0 " Shi Daibiao " primary frequency modulation load shedding
Test ".
The invention has the benefit that
1) the present invention is based on on-line testings after energy storage power station grid connection, and compared to traditional off-line test method, test result is more
Accurately and reliably.
2) present invention can test energy-accumulating power station in the primary frequency function of various operating statuses, test more complete
Face.
3) present invention can be used as the Appreciation gist that energy-accumulating power station relates to net debugging, be conducive to the grid-connected service of energy-accumulating power station.
Detailed description of the invention
Fig. 1 is the configuration diagram of test macro of the present invention；
Fig. 2 is scheduling station of the present invention and energy-accumulating power station signal interaction schematic diagram；
Fig. 3 is PCS primary frequency modulation characterisitic parameter curve graph in the present invention；
Fig. 4 is the logic chart of PCS primary frequency modulation on-line testing in the present invention.
Specific embodiment
The invention will be further described below.Following embodiment is only used for clearly illustrating technical side of the invention
Case, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of energy-accumulating power station primary frequency modulation Online Transaction Processing, including scheduling station and storage
It can power station；
Wherein, scheduling station includes AGC/ primary frequency modulation server and front server.
Energy-accumulating power station includes data communication gateway machine, monitoring host computer, current transformer (PCS) and energy-storage battery and its monitoring system
It unites (BMS).
AGC/ primary frequency modulation server and front server pass through the network connection of scheduling station local area network；Scheduling station
Front server is connected with the data communication gateway machine of energy-accumulating power station with dispatch data net；Energy-accumulating power station data communication gateway machine,
Monitoring host computer is connected with PCS by station level network, and PCS and BMS are connected in a manner of network or serial ports, PCS and energy storage
Battery is connected by cable.
Concrete function is as follows:
AGC/ primary frequency modulation server has AGC and primary frequency function, and AGC/ primary frequency modulation server is initiated test instruction, adjusted
Test instruction is forwarded to the data communication gateway machine of energy-accumulating power station by the front server for spending main website.The data communication of energy-accumulating power station
Communication interface of the gateway machine as energy-accumulating power station realizes the instruction interaction of energy-accumulating power station and scheduling station, data communication gateway machine
The test received instruction is forwarded to monitoring host computer.Monitoring host computer acquires PCS and BMS information, differentiates the operation shape of PCS and BMS
State, and test is instructed to each PCS for being forwarded to energy-accumulating power station, PCS is according to test instruction and preset primary frequency modulation characterisitic parameter
Function calculates the active of energy-accumulating power station, and acquires busbar voltage frequency, and then calculated result and acquisition data are passed through data by this
It send in communication network shutdown to scheduling station, and the power of calculating is sent to BMS and is adjusted.
As shown in Fig. 2, scheduling station and energy-accumulating power station carry out primary frequency modulation test by interactive instruction and signal.It is specific to survey
Examination instructs
Scheduling station sends the into/out test instruction of primary frequency modulation to energy-accumulating power station, which is remote signal, telecommand
For " 1 " Shi Daibiao " primary frequency modulation enters test ", the energy-accumulating power station primary frequency modulation of scheduling station control at this time enters test, and remote control refers to
Enabling is " 0 " Shi Daibiao " primary frequency modulation exits test ", and the energy-accumulating power station primary frequency modulation of scheduling station control at this time exits test.
Scheduling station sends the instruction of primary frequency modulation add drop Road test to energy-accumulating power station, which is remote signal, remote control
Instruction is " 1 " Shi Daibiao " primary frequency modulation increasing Road test ", and the PCS simulation of energy-accumulating power station is lower than a certain frequency of 50Hz at this time,
PCS carries out increasing Road test；Telecommand is " 0 " Shi Daibiao " test of primary frequency modulation load shedding ", at this time the PCS mould of energy-accumulating power station
The quasi- a certain frequency higher than 50Hz, PCS carry out load shedding test.
Energy-accumulating power station sends energy-accumulating power station active power signal to scheduling station, which is telemetered signal, energy-accumulating power station
By the sum of the active power of each PCS of calculating, in real time on send to scheduling station.
Energy-accumulating power station sends energy-accumulating power station frequency signal to scheduling station, which is telemetered signal, and energy-accumulating power station will be adopted
The busbar voltage frequency of collection, in real time on send to scheduling station.
In addition, PCS should have primary frequency modulation characterisitic parameter function, which includes following several in primary frequency modulation test
A parameter:
Amplitude limit value: for the limit value of PCS power adjustment instruction when primary frequency modulation is tested, the power adjustment amplitude of PCS primary frequency modulation
It should be less than the limit value；
Frequency dead band: the threshold value of primary frequency modulation test and primary frequency modulation movement, the busbar voltage frequency of PCS acquisition are carried out for PCS
When more than the threshold value, PCS primary frequency modulation can just be acted.
Speed governor droop: for the slope of curve in energy-accumulating power station primary frequency modulation characterisitic parameter function.
Fig. 3 is PCS primary frequency modulation characterisitic parameter curve determined by above-mentioned characterisitic parameter.
Based on above system, the present invention provides a kind of method of energy-accumulating power station primary frequency modulation on-line testing, including following step
It is rapid:
Step 1: putting up test macro, enable scheduling station and the normal interactive instruction of energy-accumulating power station and signal.
Step 2: scheduling station initiates to increase Road test instruction or load shedding under the various operating conditions of energy-accumulating power station
Test instruction.
Further, energy-accumulating power station it is standby, charge, discharge and shut down various operating conditions when or energy-accumulating power station at
When low state-of-charge, middle state-of-charge and highly charged state, respectively energy-accumulating power station is carried out increasing Road test and load shedding is surveyed
Examination.
Step 3: the data communication gateway machine of energy-accumulating power station receives the test instruction of scheduling station transmission, test is instructed
It is forwarded to monitoring host computer, test instruction is sent to each PCS of energy-accumulating power station according to the operating status of each PCS by monitoring host computer.
Step 4: according to primary frequency modulation characterisitic parameter function the performance number that current PC S needs to adjust is calculated, so in PCS
The operating status for adjusting PCS afterwards, is adjusted to object run power, and control energy-storage battery.The operating status of PCS includes
Charging discharges, is standby and deactivated.Power electronic element is controlled by PCS, controls its rectification and inversion output valve, to energy storage electricity
Pond is controlled.
In test assignment each time, scheduling station needs to send one group of test instruction and completes test operation.Specifically, increase
When Road test: scheduling station first to energy-accumulating power station send primary frequency modulation enters test instruction, sometime after (it is required that 10 seconds it
It is interior), scheduling station sends primary frequency modulation to energy-accumulating power station and increases Road test instruction, and the PCS simulation of energy-accumulating power station is lower than at this time
The a certain frequency of 50Hz, PCS carry out increasing Road test；After a period of time after test instruction sending, scheduling station is electric to energy storage
Transmission primary frequency modulation of standing exits test instruction.When load shedding is tested: scheduling station first sends primary frequency modulation to energy-accumulating power station and enters
Test instruction, sometime after, scheduling station sends the test instruction of primary frequency modulation load shedding, at this time energy-accumulating power station to energy-accumulating power station
PCS simulation be higher than 50Hz a certain frequency, PCS carry out load shedding test；After a period of time after test instruction sending, scheduling
Main website sends primary frequency modulation to energy-accumulating power station and exits test instruction.Test process is referring to fig. 4.
Step 5: energy-accumulating power station monitoring host computer acquisition PCS power adjustment as a result, being recorded, being shown, counted, being analyzed
And output；
The active power of each PCS in the real-time acquisition station of energy-accumulating power station monitoring host computer, the primary frequency modulation performance parameter for calculating PCS (are rung
Between seasonable, the precision of adjustment amplitude), while according to the operating status of PCS, the performance number of PCS is added to (charged state is phase
Add, discharge condition be subtract each other), by data communication gateway machine it is real-time on send scheduling station.
Step 6, the performance number sent and frequency values on scheduling station acquisition energy-accumulating power station, recorded, shown, being counted and
Analysis.
Scheduling station receives the real-time active power sent on energy-accumulating power station, according to the rated power of energy-accumulating power station, calculates storage
The frequency modulation performance (response time and adjustment amplitude precision) in energy power station, judges whether energy-accumulating power station has primary frequency modulation performance, sentences
Whether disconnected primary frequency modulation performance meets the requirement of specification, standard and administrative provisions.
In summary:
The present invention is once adjusted with energy-accumulating power station side by interacting a series of control instructions, development energy-accumulating power station by scheduling station side
Frequency grid connection test examines the function and performance of energy-accumulating power station primary frequency modulation, examine energy-accumulating power station formal grid-connected Shang Yunqian whether
Meet the requirement of standard, specification and administrative provisions.It examines whether energy-accumulating power station has primary frequency function, examines energy-accumulating power station one
Whether secondary frequency modulation characteristic parametric function meets performance requirements.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of energy-accumulating power station primary frequency modulation Online Transaction Processing, which is characterized in that including scheduling station and energy-accumulating power station；It is described
Scheduling station includes AGC/ primary frequency modulation server and front server；The energy-accumulating power station includes data communication gateway machine, prison
Control host, current transformer and energy-storage battery and its monitoring system；
The AGC/ primary frequency modulation server and front server pass through the network connection of scheduling station local area network；The scheduling master
The front server stood is connected with the data communication gateway machine of energy-accumulating power station with dispatch data net；The data of the energy-accumulating power station are logical
Letter gateway machine, monitoring host computer are connected with current transformer by station level network；The monitoring system of the current transformer and energy-storage battery is logical
The mode for crossing network or serial ports connects；The current transformer is connected with energy-storage battery by cable.
2. a kind of energy-accumulating power station primary frequency modulation Online Transaction Processing according to claim 1, which is characterized in that the AGC/
Primary frequency modulation server has AGC and primary frequency function；The AGC/ primary frequency modulation server is initiated test and is instructed to preposition
Test instruction is forwarded to data communication gateway machine by server, the front server, and the data communication gateway machine will receive
To test instruction be forwarded to monitoring host computer, the information of the monitoring system of the monitoring host computer acquisition current transformer and energy-storage battery,
Differentiate the operating status of the monitoring system of current transformer and energy-storage battery, and test instruction is forwarded to each current transformer, the unsteady flow
Device calculates the active power of energy-accumulating power station, and acquire bus according to test instruction and preset primary frequency modulation characterisitic parameter function
Electric voltage frequency, then this is by calculated result and acquisition data by sending on data communication gateway machine to scheduling station.
3. a kind of energy-accumulating power station primary frequency modulation Online Transaction Processing according to claim 2, which is characterized in that described primary
Frequency modulation characteristic parametric function includes following parameter:
Amplitude limit value: for the limit value of current transformer power adjustment instruction when primary frequency modulation is tested, the power tune of current transformer primary frequency modulation
Whole picture degree needs to be less than the limit value；
Frequency dead band: the threshold value of primary frequency modulation test and primary frequency modulation movement, the bus electricity of current transformer acquisition are carried out for current transformer
When voltage-frequency rate is more than the threshold value, current transformer primary frequency modulation can just be acted；
Speed governor droop: for the slope of curve in energy-accumulating power station primary frequency modulation characterisitic parameter function.
4. a kind of energy-accumulating power station primary frequency modulation on-line testing method, which comprises the following steps:
1) test macro described in claims 1 to 3 any one is put up, scheduling station is enable normally to hand over energy-accumulating power station
Mutually instruction and signal；
2) under the various operating conditions of energy-accumulating power station, scheduling station sends primary frequency modulation to energy-accumulating power station and enters test instruction,
The energy-accumulating power station primary frequency modulation of scheduling station control at this time enters test；After certain interval of time, scheduling station is sent out to energy-accumulating power station
Primary frequency modulation is sent to increase Road test instruction or the test instruction of primary frequency modulation load shedding；Primary frequency modulation increases Road test instruction or primary
Certain interval of time after the test instruction of frequency modulation load shedding issues, scheduling station exit test to energy-accumulating power station transmission primary frequency modulation and refer to
It enables；The energy-accumulating power station primary frequency modulation of scheduling station control at this time exits test；
3) primary frequency modulation that data communication gateway machine receives scheduling station transmission increases Road test instruction or primary frequency modulation load shedding
Test instruction is forwarded to monitoring host computer by test instruction, and monitoring host computer will test instruction hair according to the operating status of each current transformer
It send to each current transformer of energy-accumulating power station；
4) current transformer is instructed according to test carries out primary frequency modulation increasing Road test or the test of primary frequency modulation load shedding, test process
In, according to primary frequency modulation characterisitic parameter function, the performance number that current current transformer needs to adjust is calculated, then adjusts current transformer
Operating status, be adjusted to object run power；
5) in the real-time acquisition station of monitoring host computer each current transformer active power, calculate the primary frequency modulation performance parameter of current transformer, together
When according to the operating status of current transformer, the performance number of current transformer is added, and by data communication gateway machine by real-time wattful power
It is sent in rate to scheduling station；
6) scheduling station receives the real-time active power sent on energy-accumulating power station, according to the rated power of energy-accumulating power station, calculates energy storage
The frequency modulation performance parameter in power station, judges whether energy-accumulating power station has primary frequency modulation performance, and judges whether primary frequency modulation performance is full
The requirement of foot specification, standard and administrative provisions.
5. a kind of energy-accumulating power station primary frequency modulation on-line testing method according to claim 4, which is characterized in that the step
2) in, operating condition include: energy-accumulating power station it is standby, charging, electric discharge and shut down and energy-accumulating power station be in low state-of-charge, in
State-of-charge and highly charged state.
6. a kind of energy-accumulating power station primary frequency modulation on-line testing method according to claim 4, which is characterized in that the step
4) in, the primary frequency modulation increases Road test and refers to that current transformer simulation is lower than a certain frequency of 50Hz, and current transformer carries out increasing load
Test；The primary frequency modulation load shedding test refers to that current transformer simulation is higher than a certain frequency of 50Hz, and current transformer carries out load shedding
Test.
7. a kind of energy-accumulating power station primary frequency modulation on-line testing method according to claim 4, which is characterized in that the step
2) time is within 10 seconds.
8. a kind of energy-accumulating power station primary frequency modulation on-line testing method according to claim 4, which is characterized in that the step
2) primary frequency modulation, which enters to test to instruct to exit with the primary frequency modulation of step 4), tests instruction as remote signal, and telecommand is
" 1 " Shi Daibiao " primary frequency modulation enters test ", telecommand are " 0 " Shi Daibiao " primary frequency modulation exits test ".
9. a kind of energy-accumulating power station primary frequency modulation on-line testing method according to claim 4, which is characterized in that the step
3) in, it is remote signal that primary frequency modulation, which increases Road test instruction and the test instruction of primary frequency modulation load shedding, when telecommand is " 1 "
It represents " primary frequency modulation increasing Road test ", telecommand is " 0 " Shi Daibiao " test of primary frequency modulation load shedding ".
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