CN107165770A - A kind of hydroenergy storage station unit starting transient state monitoring and safety estimation system and method - Google Patents
A kind of hydroenergy storage station unit starting transient state monitoring and safety estimation system and method Download PDFInfo
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- CN107165770A CN107165770A CN201710364844.8A CN201710364844A CN107165770A CN 107165770 A CN107165770 A CN 107165770A CN 201710364844 A CN201710364844 A CN 201710364844A CN 107165770 A CN107165770 A CN 107165770A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/005—Starting, also of pump-turbines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/50—Energy storage in industry with an added climate change mitigation effect
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of monitoring of hydroenergy storage station unit starting transient state and safety estimation system and method.Including transient state Monitoring Data collection signal system, transient state Monitoring Data collection intelligent terminal, communication network and the monitoring of concentration transient state and security evaluation work station；Transient state that this method is installed additional in relevant position first monitoring intelligent terminal, the electric physical quantity such as synchronous data collection power network, unit；Transient state monitors intelligent terminal and carries out preposition processing and transient characteristic extraction to the electric physical quantity gathered；Then the transient characteristic and other necessary informations for transient state being monitored into intelligent terminal upload to the monitoring of concentration transient state and security evaluation work station；Transient state monitoring is finally concentrated to carry out transient state monitoring and security evaluation to each unit starting process using temporal analysis and unit starting safety index with security evaluation work station.The present invention can monitor changing rule of the electric physical quantity of each unit starting process with the time and with frequency, the start-up course progress security evaluation to each unit in real time.
Description
Technical field
Make full use of field the present invention relates to electric energy, more particularly to a kind of monitoring of hydroenergy storage station unit starting transient state with
Safety estimation system and method.
Background technology
Hydroenergy storage station is, using certain water as carrier, one kind that electric energy is provided to power system to be changed by energy
The water-power plant of special shape.The difference of it and normal power supplies is, is provided simultaneously with two kinds of operating modes of water pump and hydrogenerator,
Water pump state is operated in electric load low ebb, using power system electricity more than needed to be supplied, the water in lower storage reservoir is extracted into
Upper storage reservoir, is stored in the form of potential energy；When needing supply of electric power when power system load peak or situations such as accident,
Hydrogenerator state is operated in, power system is sent in generating, and alleviation Voltage force serves Peak Load Adjustment.Therefore draw water storage
Energy power station is both the power consumer of an absorption valley electricity, is the power station of an offer on-peak power again.Additionally, due to taking out
The characteristics of water energy storage power generation unit itself, it has starting and stopping fast again, and rapidly, flexible operation is reliable for change working and increasing, load shedding,
Forced outage rate is relatively low, the characteristics of follow load ability is strong, suitably undertakes that power system frequency modulation, emergency episode are standby and load is standby
With, it is good spinning reserve power supply, apart from the regional nearer hydroenergy storage station of load center, can also makees generator operation as synchronous condenser, it is flat
Balance system reactive power, stable area voltage, improves operation of power networks reliability.
Due to pump-storage generator in start-up course of drawing water when service power voltage offset exceeded, harmonic voltage or electric current it is total
The factor that aberration rate is exceeded, excitation voltage or current anomaly, starter operation irregularity and other influence units normally start
Appearance all unit will be caused normally to start, it is therefore desirable to hydroenergy storage station unit starting process carry out transient state monitoring with
Security evaluation.
The implementation of the invention can realize that transient state monitoring is carried out to each unit starting process of hydroenergy storage station to be commented with safety
Estimate.Compared with existing stationary monitor technology, the present invention is not changed by frequency to be influenceed, and each unit starting process can be monitored in real time
Changing rule of the electric physical quantity with the time and with frequency, security evaluation is carried out to the start-up course of each unit, be water-storage
The safety and economic operation of power station unit start-up course provides technical guarantee.So as to, improve hydroenergy storage station economic benefit and
The social benefit in peak clipping Pinggu.
The content of the invention
The present invention provides a kind of hydroenergy storage station unit starting transient state monitoring and safety estimation system and method, it is intended to solve
Certainly in each unit starting process of hydroenergy storage station, to power network, unit, excitation system, starter, station service electrical system operation
Operating mode carries out transient state monitoring, and security evaluation is carried out to unit starting, it is ensured that improve unit starting success rate.
The object of the present invention is achieved like this：
A kind of hydroenergy storage station unit starting transient state monitoring and safety estimation system, it is characterised in that including：
Transient state Monitoring Data gathers signal system：For accessing power network, unit, excitation system, starter, station service electrical system
The direct current voltage sensor and electric current of AC voltage transformer summation current transformer secondary side and excitation system DC loop are passed
After the output signal of sensor, normal voltage and current signal are converted into transient state Monitoring Data collection intelligence by signaling conversion circuit
The receivable signal of input of energy terminal；
Transient state Monitoring Data gathers intelligent terminal：Receive the process transient state Monitoring Data collection signal system transmitted by transmission cable
The signal of system processing, and signal is subjected to data processing and transient characteristic extraction；
Communication network：For transmitting the letter extracted by the collection Intelligent terminal data processing of transient state Monitoring Data and transient characteristic
Number；
Concentrate transient state monitoring and security evaluation work station：Receive and taken out by the signal of communication network transmission according to application demand
The unit starting transient state monitoring of water storage station and security evaluation.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety estimation system, the transient state monitors number
According to collection signal system（10）Including for monitor power network, unit, excitation system, starter, station service electrical system alternating current
The voltage transformer summation current transformer of pressure and electric current；Voltage for monitoring excitation system DC loop DC voltage and electric current
Sensor and current sensor；The signaling conversion circuit being connected simultaneously with voltage transformer summation current transformer；It is based on and signal
The transmission cable of change-over circuit connection.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety estimation system, the transient state monitors number
According to collection intelligent terminal（20）Including the synchronous data collection unit being sequentially connected, electric physical quantity preprocessing unit, transient state are special
Levy extraction unit and data transmission control unit, mass data access unit simultaneously with electric physical quantity preprocessing unit and transient state
Feature extraction unit is connected；Each unit is worked in coordination, realize transient state Monitoring Data collection, access, processing, transient characteristic extract and
Data communication function.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety estimation system, the communication network
（30）Including gathering intelligent terminal with transient state Monitoring Data（20）Communication interface and conversion equipment, with concentrate transient state monitoring with peace
Full evaluation work station（40）Communication interface and conversion equipment, communication cable or optical cable, Network Security Device.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety estimation system, the concentration transient state prison
Survey and security evaluation work station（40）Including
Data communication station：Including data communication units, for data communication；
Data server：For data storage, data processing, database and management；
Engineer work station：Including transient state monitoring unit, security evaluation unit, fault alarm unit, system maintenance unit, man-machine
Interactive unit.
A kind of hydroenergy storage station unit starting transient state monitoring and safety evaluation method, it is characterised in that including following step
Suddenly：
Step 1, the transient state Monitoring Data installed additional in each unit of hydroenergy storage station and excitation system and starter gather intelligence
Can terminal；
Step 2, pass through transient state Monitoring Data gather intelligent terminal, at a high speed, in real time, high accuracy, synchronous data collection power network, machine
Group, excitation system, starter, the electric physical quantity of station service electrical system
Step 3, transient state Monitoring Data collection intelligent terminal carry out preposition processing to the electric physical quantity gathered and transient characteristic is carried
Take；
Step 4, the transient state that transient state Monitoring Data is gathered to using mass data light transmission method and communication network intelligent terminal
Feature and other necessary informations upload to the monitoring of concentration transient state and security evaluation work station；
Step 5, the monitoring of concentration transient state use temporal analysis and unit starting index of security assessment pair with security evaluation work station
Each unit starting process carries out transient state monitoring and security evaluation.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety evaluation method, the specific side of step 1
Method is：The input connection power network of transient state Monitoring Data collection intelligent terminal, unit, excitation system, starter, station service system
The voltage transformer summation current transformer secondary side of system and the direct current voltage sensor and electric current of excitation system DC loop are passed
The output end of sensor；The output end of transient state Monitoring Data collection intelligent terminal passes through communication equipment connection communication network.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety evaluation method, step 2, the electricity
Physical quantity includes, and gathers power network, unit, excitation system, starter, the power frequency ac voltage of station service electrical system, electric current and encourages
DC voltage, electric current and aperiodic alternating voltage, the electric current using static frequency converter of magnetic system；The sampling of data acquisition
Speed and digital-to-analogue conversion accuracy meet the detection of unit starting process transient state and the requirement of security evaluation；The source of data acquisition is each
The voltage transformer summation current transformer of AC sampling object, the direct current voltage sensor and direct current of excitation system DC loop
Flow sensor.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety evaluation method, step 3, it is described before
Putting processing includes：Synchronism, accuracy, anti-interference, out-of-limit protection and the analog-to-digital conversion of Acquisition Circuit；Microprocessor input and
Output interface, microprocessor communication interface；The filtering of sampled data, real-time, validity, authenticity, integrality, it can preserve
Property, can transmit and inquiry property processing；
The transient characteristic, which is extracted, to be included：Transient state electric parameter is extracted, including calculates random time containing aperiodic of ac, cycle
Of ac, DC quantity, transient voltage virtual value, transient current virtual value, the transient state wattful power of dullness/exponential damping or ascending amount
Rate, transient reactive power and transient power factor；Transient process parameter extraction, including calculate above-mentioned condition under voltage and current from
Time and changes in amplitude value that transient state is undergone to stable state；Other necessary informations needed for application demand, for example：It is out-of-limit, abnormal
And fault message；
Transient state electric parameter, transient process parameter after electric physical quantity after preposition processing and transient characteristic are extracted and should
Stored after adding markers with other necessary informations needed for demand in memory, to inquire about and to upload；
When target choose and must meet the related code of practical application or real-time data acquisition and code requirement.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety evaluation method, the specific side of step 4
Method is：Target transient state electric parameter and transient process parameter and application demand when transient state Monitoring Data is gathered into band in intelligent terminal
Required other necessary informations, by communication network, concentration transient state monitoring is uploaded to using timing, calling or interruption transmission means
With security evaluation work station, and store to transient state and monitor in the database specified with security evaluation work station, so that transient state is monitored
With security evaluation.
In a kind of above-mentioned hydroenergy storage station unit starting transient state monitoring and safety evaluation method, step 5, when described
The legal adopted free voltage of domain analysis, the real-time data collection of curent change rule are defined as the corresponding real-time wink of voltage, electric current
Duration；Voltage, the root-mean-square valve of electric current determine voltage and current transient state virtual value in access time section；In access time section
The product of voltage and electric current is averaged to the integration of time and determines the equivalent active power of transient state；Access time section in voltage with
The product of current temporary state virtual value determines the equivalent apparent energy of transient state；The equivalent active power of transient state and transient state in access time section
The ratio of equivalent apparent energy determines transient state Equivalent Power Factor；
The unit starting index of security assessment includes calculating the service power voltage exceeded, harmonic voltage of skew or electric current total harmonic distortion
The factor that exceeded, excitation voltage or current anomaly, starter operation irregularity, other influence units normally start occurs causing machine
The probability that group can not normally start；
Concentrate transient state monitoring with security evaluation work station include data communication units, database and management system, control unit, temporarily
State monitoring unit, security evaluation unit, fault alarm unit, system maintenance unit, man-machine interaction unit；
The data communication units obtain transient state according to the application demand of control unit from transient state Monitoring Data collection intelligent terminal
Monitoring and data needed for security evaluation, or receive the number sent from transient state Monitoring Data collection intelligent terminal by interrupt requests
According to, and store into specified database, so that transient state monitoring is used with security evaluation；
The data that the database and management system are obtained and received to data communication units, according to the application needs of control unit
Enter row data communication, data storage, data processing, data operation, data query, data maintenance, data modification and data to update
Operation；
Described control unit by man-machine interaction unit, according to application demand to data communication units, database and management system,
Transient state monitoring unit, security evaluation unit, fault alarm unit and system maintenance unit are controlled, and realize corresponding function；
The transient state monitoring unit sets power network, unit, excitation system, starter and station service electrical system in unit starting process
In transient operating mode monitoring function, i.e.,：A-c cycle is monitored, the real-time instantaneous value of voltage and current, transient state virtual value, transient state are equivalent
Active power, reactive power, apparent energy and power factor and DC voltage, electric current change with time rule, with data
Display with curve is showed；The inquiry of historical data function；Off-limit alarm function；Fault diagnosis functions；
The security evaluation unit is according to the safety of the real-time and historical data of unit starting index of security assessment to unit starting
Property be estimated, when the probability that unit can not normally start be less than unit starting success rate performance assessment criteria 50% when, define unit can
With clean boot；When the probability that unit can not normally start is more than unit starting success rate performance assessment criteria 50%, less than unit starting
During success rate performance assessment criteria 80%, clean boot can be compared by defining unit；When the probability that unit can not normally start is more than unit
Start success rate performance assessment criteria 80%, during less than or equal to unit starting success rate performance assessment criteria 100%, define unit starting and exist
Potential safety hazard；When the probability that unit can not normally start is more than unit starting success rate performance assessment criteria, defining unit can not pacify
It is complete to start；
Security evaluation unit sets display and the query function of the real time data and historical data of unit starting index of security assessment；
Unit starting security evaluation analytic function, when there is potential safety hazard, alert is proposed to eliminate by security evaluation unit
The suggested measures of potential safety hazard；
The fault alarm unit gathers fault message and concentration transient state prison that intelligent terminal is obtained according to from transient state Monitoring Data
Survey with security evaluation work station self test failure information, send the sound and word warning message, point out fault type, title, place,
Time and treatment measures；
The system maintenance unit sets data backup, data renewal, system recovery, parameter setting, function setting function；
The man-machine interaction unit sets keyboard, mouse, data input/output interface and display function.
Prior art generally carries out frequency-domain analysis using frequency domain analysis to the physical quantity of collection, is practically applicable to steady-state analysis
Occasion.It is inapplicable in frequency conversion system and aperiodic AC system frequency-domain analysis method.
Compared with existing monitoring system, the system has following technical characterstic and function：1st, high-speed synchronous data acquiring,
Time-domain analysis and real-time display function：The startup of each unit of high speed synchronous sample and excitation system and static frequency converter SFC
During different frequency transient voltage and transient current waveform.2nd, transient state monitors the transient state component feature extraction work(of intelligent terminal
Energy：The transient characteristic in each unit and excitation system and static frequency converter SFC start-up course is extracted, including：Transient state pole
Value, time constant, attenuation coefficient and transient oscillation cycle；Voltage dip or voltage swells etc..3rd, magnanimity real time data is light-duty
Transmission and store function：Magnanimity in each unit and excitation system and static frequency converter SFC start-up course is complete in real time
Information data samples are stored in intelligent terminal（Monitor equipment on-line）, by feature extraction, characteristic lightness is transferred to
Centralized control room, is stored in master device（Analysis in real time and security evaluation equipment）In.4th, pump-storage generator starts transient state mistake
Journey is monitored on-line and real-time analytic function：In the start-up course that each unit and excitation system and static frequency converter SFC are provided
Transient operating mode show in real time（Waveform and data）；The off-limit alarm of the operational factors such as voltage, electric current, power and early warning.
5th, pump-storage generator start-up course security evaluation function：Complete to start success rate record and analyze；Start Failure Causes Analysis；
The selection and calculating of unit starting process safety evaluation index；The functions such as unit starting process safety assessment.
The present invention uses Time Domain Analysis, can with monitor and calculate hydroenergy storage station unit starting during
Transient state electric parameter and transient process parameter.Not changed by frequency is influenceed, and the electric thing of each unit starting process is monitored in real time
Changing rule of the reason amount with the time and with frequency, the start-up course progress security evaluation to each unit, for hydroenergy storage station
The on-line monitoring of unit starting transient process and safety estimation system, the online prison of Frequency converting driving high-power electric equipment start-up course
Control；It is applied to the startup of frequency modulation regulating units or the on-line monitoring of change working transient process, all kinds of power plant units is opened
The on-line monitoring of the quality of power supply and operating condition transient process of dynamic transient process on-line monitoring, power network and electricity supplying and using system.Tool
It is improved the effect of operation and management level, plant maintenance level and Business Economic Benefit.For hydroenergy storage station unit starting mistake
Journey, the safety and economic operation of Frequency converting driving high-power electric equipment start-up course provide technical guarantee.So as to improve water-storage
The economic benefit in power station and the social benefit in peak clipping Pinggu.
Brief description of the drawings
Fig. 1 is embodiment of the method flow chart of the present invention.
Fig. 2 is system embodiment general system set-up block diagram of the present invention.
Fig. 3 is that system embodiment of the present invention concentrates transient state monitoring and security evaluation work station structured flowchart.
Fig. 4 is the most simple embodiment system catenation principle figure of system of the present invention.
Embodiment
Describe in detail with reference to the accompanying drawings and examples：
First, the monitoring of hydroenergy storage station unit starting transient state and safety evaluation method
Hydroenergy storage station unit starting transient state is monitored with safety evaluation method embodiment flow chart as shown in figure 1, can by Fig. 1
See：
1st, it is described Step 1: the transient state installed additional in each unit of hydroenergy storage station and excitation system and starter monitors number
According to collection intelligent terminal 1：
The input connection power network of transient state Monitoring Data collection intelligent terminal, unit, excitation system, starter, station service system
The voltage transformer summation current transformer secondary side of system and the direct current voltage sensor and electric current of excitation system DC loop are passed
The output end of sensor；The output end of transient state Monitoring Data collection intelligent terminal passes through communication equipment connection communication network.
2nd, it is described Step 2: pass through transient state Monitoring Data gather intelligent terminal, at a high speed, in real time, high accuracy, synchrodata
Gather power network, unit, excitation system, starter, the electric physical quantity 2 of station service electrical system：
The electric physical quantity includes, collection power network, unit, excitation system, starter, the industrial-frequency alternating current of station service electrical system
Pressure, the DC voltage of electric current and excitation system, electric current and aperiodic alternating voltage, the electric current using static frequency converter.Number
The detection of unit starting process transient state and the requirement of security evaluation are met according to the sample rate and digital-to-analogue conversion accuracy of collection.Data are adopted
The source of collection is the voltage transformer summation current transformer of each AC sampling object, the DC voltage of excitation system DC loop is passed
Sensor and DC current sensor.
3rd, it is described Step 3: transient state Monitoring Data gathers intelligent terminal carries out preposition processing to the electric physical quantity that is gathered
3 are extracted with transient characteristic：
The preposition processing includes：Synchronism, accuracy, anti-interference, out-of-limit protection and the analog-to-digital conversion of Acquisition Circuit；Micro- place
Manage device input and output interface, microprocessor communication interface；It is the filtering of sampled data, real-time, validity, authenticity, complete
Property, keeping quality, can transmit and the processing such as inquiry property.
The transient characteristic, which is extracted, to be included：Transient state electric parameter is extracted, i.e.,：Calculate random time containing aperiodic of ac,
Cycle alternating-current amount, DC quantity, the transient voltage virtual value of dullness/exponential damping or ascending amount, transient current virtual value, transient state have
The transient state electric parameters such as work(power, transient reactive power and transient power factor；Transient process parameter extraction, i.e.,：Calculate above-mentioned
Under the conditions of the transient process parameter such as time for being undergone from transient state to stable state of voltage and current and changes in amplitude value；Application demand institute
The other necessary informations needed, for example：The information such as out-of-limit, exception and failure.
Transient state electric parameter, transient process parameter after electric physical quantity after preposition processing and transient characteristic are extracted
Stored after adding markers with other necessary informations needed for application demand in memory, to inquire about and to upload.
When target choose and must meet the related code of practical application or real-time data acquisition and code requirement.
4th, it is described Step 4: transient state Monitoring Data is gathered into intelligence using mass data light transmission method and communication network
The transient characteristic and other necessary informations of energy terminal upload to the monitoring of concentration transient state and security evaluation work station 4：
Target transient state electric parameter and transient process parameter and application demand when transient state Monitoring Data is gathered into band in intelligent terminal
Required other necessary informations, by communication network optical fiber or communication cable, are uploaded using timing, calling or interruption transmission means
To the monitoring of concentration transient state and security evaluation work station, and store the database specified to transient state monitoring and security evaluation work station
In, so as to transient state monitoring and security evaluation.
5th, it is described to be pacified Step 5: concentrating transient state to monitor with security evaluation work station using temporal analysis and unit starting
Full evaluation index carries out transient state monitoring and security evaluation 5 to each unit starting process：
The temporal analysis defines free voltage, the real-time data collection of curent change rule and is defined as pair of voltage, electric current
The real-time instantaneous value answered；Voltage, the root-mean-square valve of electric current determine voltage and current transient state virtual value in access time section；In choosing
Take the product of voltage and electric current in the period to average the integration of time and determine the equivalent active power of transient state；In access time
The product of voltage and current temporary state virtual value determines the equivalent apparent energy of transient state in section；Transient state is equivalent active in access time section
Power and the ratio of the equivalent apparent energy of transient state determine transient state Equivalent Power Factor.
The unit starting index of security assessment includes calculating the service power voltage exceeded, harmonic voltage of skew or electric current is always abnormal
The factor that variability is exceeded, excitation voltage or current anomaly, starter operation irregularity, other influence units normally start is led
The probability for causing unit normally to start.
Concentrate transient state monitoring single including data communication units, database and management system, control with security evaluation work station
Member, transient state monitoring unit, security evaluation unit, fault alarm unit, system maintenance unit, man-machine interaction unit.
The data communication units are obtained according to the application demand of control unit from transient state Monitoring Data collection intelligent terminal
Transient state is monitored and data needed for security evaluation, or receives what is sent from transient state Monitoring Data collection intelligent terminal by interrupt requests
Data, and store into specified database, so that transient state monitoring is used with security evaluation.
The data that the database and management system are obtained and received to data communication units, according to the application of control unit
Need into row data communication, data storage, data processing, data operation, data query, data maintenance, data modification and data
The operation such as renewal.
Described control unit is by man-machine interaction unit, according to application demand to data communication units, database and management
System, transient state monitoring unit, security evaluation unit, fault alarm unit and system maintenance unit are controlled, and are realized corresponding
Function.
The transient state monitoring unit sets power network, unit, excitation system, starter and station service electrical system in unit starting
During transient operating mode monitoring function, i.e.,：Monitor a-c cycle, the real-time instantaneous value of voltage and current, transient state virtual value, transient state
Equivalent active power, reactive power, apparent energy and power factor and DC voltage, electric current change with time rule, with
The display of data and curve is showed；The inquiry of historical data function；Off-limit alarm function；Fault diagnosis functions.
The security evaluation unit is according to the real-time and historical data of unit starting index of security assessment to unit starting
Security is estimated, and when the probability that unit can not normally start is less than unit starting success rate performance assessment criteria 50%, defines machine
Group can be with clean boot；When the probability that unit can not normally start is more than unit starting success rate performance assessment criteria 50%, less than unit
When starting success rate performance assessment criteria 80%, clean boot can be compared by defining unit；When the probability that unit can not normally start is more than
Unit starting success rate performance assessment criteria 80%, during less than or equal to unit starting success rate performance assessment criteria 100%, defines unit starting
There is potential safety hazard；When the probability that unit can not normally start is more than unit starting success rate performance assessment criteria, unit is defined not
Can clean boot.
Security evaluation unit sets the display and inquiry of the real time data and historical data of unit starting index of security assessment
Function；Unit starting security evaluation analytic function, when there is potential safety hazard, security evaluation unit puies forward alert
Go out the suggested measures eliminated safe hidden trouble.
The fault alarm unit is according to the fault message that intelligent terminal acquisition is gathered from transient state Monitoring Data and concentrates temporary
State monitor with security evaluation work station self test failure information, send the sound and word warning message, point out fault type, title,
Place, time and treatment measures.
The system maintenance unit sets data backup, data renewal, system recovery, parameter setting, function setting function.
2nd, the monitoring of hydroenergy storage station unit starting transient state and safety estimation system
1st, it is overall
Such as Fig. 2, the system includes transient state Monitoring Data collection signal system 10, transient state Monitoring Data collection intelligent terminal 20, led to
Communication network 30, the monitoring of concentration transient state and security evaluation work station 40.
Its operation principle is：The transient state Monitoring Data collection access of signal system 10 power network, unit, excitation system, startup dress
Put, the DC voltage of the AC voltage transformer summation current transformer secondary side of station service electrical system and excitation system DC loop
Normal voltage and current signal are converted into transient state by signaling conversion circuit after the output signal of sensor and current sensor
Monitoring Data gathers the receivable signal of input of intelligent terminal 20, is then sent to transient state Monitoring Data by transmission cable
Gather the input of intelligent terminal 20；The data processing of intelligent terminal 20 is gathered by transient state Monitoring Data and transient characteristic is extracted
Afterwards, the monitoring of concentration transient state and security evaluation work station 40 are uploaded to by communication network 30, carried out by the station according to application demand
Hydroenergy storage station unit starting transient state is monitored and security evaluation.
2nd, subsystem
The transient state Monitoring Data collection signal system 10 includes being used to monitor power network, unit, excitation system, starter, factory
The alternating voltage of electricity system and the voltage transformer summation current transformer of electric current；For monitoring excitation system DC loop direct current
The voltage sensor and current sensor of voltage and current；Signaling conversion circuit and transmission cable.
The transient state Monitoring Data collection intelligent terminal 20 includes high speed, real-time, high accuracy, synchronous data collection unit,
Mass data access unit, electric physical quantity preprocessing unit, transient characteristic extraction unit and data transmission control unit.Each list
Member is worked in coordination, and realizes that the collection of transient state Monitoring Data, access, processing, transient characteristic are extracted and data communication function.
The communication network 30 include with transient state Monitoring Data gather intelligent terminal 20 communication interface and conversion equipment, with
Transient state monitoring and communication interface and conversion equipment, communication cable or optical cable, the network security of security evaluation work station 40 is concentrated to set
It is standby.
The concentration transient state monitoring includes data communication station with security evaluation work station 40, realizes data communication units
Function；Data server, realizes data storage, data processing, database and management system function；Engineer work station, realizes
Transient state monitoring unit, security evaluation unit, fault alarm unit, system maintenance unit, man-machine interaction unit function.
3rd, principle
System embodiment of the present invention concentrates transient state monitoring as shown in Figure 3 with security evaluation work station principle schematic.
Control unit control data communication unit gathers intelligent terminal in real time from transient state Monitoring Data or calling gathers transient state
Monitoring and data needed for security evaluation are simultaneously stored in database；Man-machine interaction unit operates transient state monitoring single according to application demand
Member, security evaluation unit, fault alarm unit and system maintenance unit, by controller and data management system, carry out data
Handle, update, inquiring about, calculating, analyzing and display, and completing transient state monitoring, security evaluation, fault alarm and system maintenance work(
Energy.
4th, most simple embodiment
The most simple embodiment of system of the present invention is as shown in Figure 4.The input difference of n transient state Monitoring Data collection intelligent terminal
Connect the AC voltage transformer of n set end and the direct current of outlet Current Transformer Secondary side and excitation system DC loop
The output signal of voltage sensor and current sensor；The input connection access of 1 transient state Monitoring Data collection intelligent terminal becomes
Frequency starter SFC input power side, i.e.,：The AC voltage transformer summation current transformer secondary side of station service electrical system, warp
Cross UTP5 netting twines and each transient state Monitoring Data collection intelligent terminal 20 is connected to 1000M optical switch.By transient state Monitoring Data
After the data processing and transient characteristic for gathering intelligent terminal are extracted, 1000M optical switch is supervised transient state by single mode/multimode optical cable
Survey data acquisition intelligent terminal data be uploaded to concentration transient state monitoring with the preposition fiber optical transceiver of security evaluation work station 40/
Optical switch, is sent to the monitoring of concentration transient state and security evaluation work station 40, by the station according to application demand after opto-electronic conversion
Carry out the monitoring of hydroenergy storage station unit starting transient state and security evaluation.
The above described is only a preferred embodiment of the present invention, not making any formal limitation to the present invention.Though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention.It is any to be familiar with those skilled in the art
Member, without departing from the scope of the technical proposal of the invention, all using the methods and techniques content of the disclosure above to the present invention
Technical scheme makes many possible variations and modification, or is revised as the equivalent embodiment of equivalent variations.Therefore, it is every without departing from
The content of technical solution of the present invention, the technical spirit according to the present invention is to any simple modification made for any of the above embodiments, equivalent
Change and modify, still fall within technical solution of the present invention protection in the range of.
Claims (11)
1. a kind of hydroenergy storage station unit starting transient state monitoring and safety estimation system, it is characterised in that including：
Transient state Monitoring Data gathers signal system（10）：For accessing power network, unit, excitation system, starter, station service system
The AC voltage transformer summation current transformer secondary side of system and the direct current voltage sensor and electricity of excitation system DC loop
After the output signal of flow sensor, normal voltage and current signal are converted into transient state Monitoring Data by signaling conversion circuit and adopted
Collect intelligent terminal（20）The receivable signal of input；
Transient state Monitoring Data gathers intelligent terminal（20）：Receive the process transient state Monitoring Data collection letter transmitted by transmission cable
Number system（10）The signal of processing, and signal is subjected to data processing and transient characteristic extraction；
Communication network（30）：For transmitting by transient state Monitoring Data collection intelligent terminal（20）Data processing and transient characteristic are carried
The signal taken；
Concentrate transient state monitoring and security evaluation work station（40）：Communication network is passed through in reception（30）The signal of transmission is according to applying need
Ask the monitoring of progress hydroenergy storage station unit starting transient state and security evaluation.
2. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 1 and safety estimation system, it is special
Levy and be, the transient state Monitoring Data gathers signal system（10）Including for monitoring power network, unit, excitation system, startup dress
Put, the voltage transformer summation current transformer of the alternating voltage of station service electrical system and electric current；Returned for monitoring excitation system direct current
The voltage sensor and current sensor of road DC voltage and electric current；The letter being connected simultaneously with voltage transformer summation current transformer
Number change-over circuit；Based on the transmission cable being connected with signaling conversion circuit.
3. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 2 and safety estimation system, it is special
Levy and be：The transient state Monitoring Data gathers intelligent terminal（20）Including the synchronous data collection unit being sequentially connected, electric physics
Measure preprocessing unit, transient characteristic extraction unit and data transmission control unit, mass data access unit simultaneously with electric thing
Reason amount preprocessing unit and the connection of transient characteristic extraction unit；Each unit is worked in coordination, and is realized the collection of transient state Monitoring Data, is deposited
Take, handle, transient characteristic is extracted and data communication function.
4. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 3 and safety estimation system, it is special
Levy and be：The communication network（30）Including gathering intelligent terminal with transient state Monitoring Data（20）Communication interface and conversion set
Standby and concentration transient state monitoring and security evaluation work station（40）Communication interface and conversion equipment, communication cable or optical cable, network
Safety means.
5. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 4 and safety estimation system, it is special
Levy and be：The concentration transient state monitoring and security evaluation work station（40）Including
Data communication station：Including data communication units, for data communication；
Data server：For data storage, data processing, database and management；
Engineer work station：Including transient state monitoring unit, security evaluation unit, fault alarm unit, system maintenance unit, man-machine
Interactive unit.
6. a kind of hydroenergy storage station unit starting transient state monitoring and safety evaluation method, it is characterised in that comprise the following steps：
Step 1, the transient state Monitoring Data installed additional in each unit of hydroenergy storage station and excitation system and starter gather intelligence
Can terminal；
Step 2, pass through transient state Monitoring Data gather intelligent terminal, at a high speed, in real time, high accuracy, synchronous data collection power network, machine
Group, excitation system, starter, the electric physical quantity of station service electrical system
Step 3, transient state Monitoring Data collection intelligent terminal carry out preposition processing to the electric physical quantity gathered and transient characteristic is carried
Take；
Step 4, the transient state that transient state Monitoring Data is gathered to using mass data light transmission method and communication network intelligent terminal
Feature and other necessary informations upload to the monitoring of concentration transient state and security evaluation work station；
Step 5, the monitoring of concentration transient state use temporal analysis and unit starting index of security assessment pair with security evaluation work station
Each unit starting process carries out transient state monitoring and security evaluation.
7. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 6 and safety evaluation method, it is special
Levy and be, the specific method of step 1 is：The input connection power network of transient state Monitoring Data collection intelligent terminal, unit, excitation system
System, starter, the voltage transformer summation current transformer secondary side of station service electrical system and excitation system DC loop it is straight
Flow the output end of voltage sensor and current sensor；The output end of transient state Monitoring Data collection intelligent terminal passes through communication equipment
Connection communication network.
8. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 6 and safety evaluation method, it is special
Levy and be, in step 2, the electric physical quantity includes, collection power network, unit, excitation system, starter, station service electrical system
Power frequency ac voltage, the DC voltage of electric current and excitation system, electric current and the aperiodic alternation electricity using static frequency converter
Pressure, electric current；The sample rate and digital-to-analogue conversion accuracy of data acquisition meet the detection of unit starting process transient state and security evaluation
It is required that；The source of data acquisition is voltage transformer summation current transformer, the excitation system DC loop of each AC sampling object
Direct current voltage sensor and DC current sensor.
9. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 6 and safety evaluation method, it is special
Levy and be, in step 3, the preposition processing includes：Synchronism, accuracy, anti-interference, out-of-limit protection and the mould of Acquisition Circuit
Number conversion；Microprocessor is inputted and output interface, microprocessor communication interface；The filtering of sampled data, real-time, validity,
Authenticity, integrality, keeping quality, can transmit and inquiry property processing；
The transient characteristic, which is extracted, to be included：Transient state electric parameter is extracted, including calculates random time containing aperiodic of ac, cycle
Of ac, DC quantity, transient voltage virtual value, transient current virtual value, the transient state wattful power of dullness/exponential damping or ascending amount
Rate, transient reactive power and transient power factor；Transient process parameter extraction, including calculate above-mentioned condition under voltage and current from
Time and changes in amplitude value that transient state is undergone to stable state；Other necessary informations needed for application demand, for example：It is out-of-limit, abnormal
And fault message；
Transient state electric parameter, transient process parameter after electric physical quantity after preposition processing and transient characteristic are extracted and should
Stored after adding markers with other necessary informations needed for demand in memory, to inquire about and to upload；
When target choose and must meet the related code of practical application or real-time data acquisition and code requirement.
10. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 6 and safety evaluation method, it is special
Levy and be, the specific method of step 4 is：By transient state Monitoring Data gather intelligent terminal in band when target transient state electric parameter and temporarily
Other necessary informations needed for state procedure parameter and application demand, by communication network, using timing, calling or interruption transmission side
Formula uploads to the monitoring of concentration transient state and security evaluation work station, and stores to transient state the number for monitoring and being specified with security evaluation work station
According in storehouse, so as to transient state monitoring and security evaluation.
11. a kind of hydroenergy storage station unit starting transient state monitoring according to claim 6 and safety evaluation method, it is special
Levy and be, in step 5, the temporal analysis defines free voltage, the real-time data collection of curent change rule and is defined as electricity
Pressure, the corresponding real-time instantaneous value of electric current；Voltage, the root-mean-square valve of electric current determine voltage and current transient state in access time section
Virtual value；The product of voltage and electric current is averaged to the integration of time in access time section determines the equivalent wattful power of transient state
Rate；The product of voltage and current temporary state virtual value determines the equivalent apparent energy of transient state in access time section；In access time section
The ratio of the interior equivalent active power of transient state and the equivalent apparent energy of transient state determines transient state Equivalent Power Factor；
The unit starting index of security assessment includes calculating the service power voltage exceeded, harmonic voltage of skew or electric current total harmonic distortion
The factor that exceeded, excitation voltage or current anomaly, starter operation irregularity, other influence units normally start occurs causing machine
The probability that group can not normally start；
Concentrate transient state monitoring with security evaluation work station include data communication units, database and management system, control unit, temporarily
State monitoring unit, security evaluation unit, fault alarm unit, system maintenance unit, man-machine interaction unit；
The data communication units obtain transient state according to the application demand of control unit from transient state Monitoring Data collection intelligent terminal
Monitoring and data needed for security evaluation, or receive the number sent from transient state Monitoring Data collection intelligent terminal by interrupt requests
According to, and store into specified database, so that transient state monitoring is used with security evaluation；
The data that the database and management system are obtained and received to data communication units, according to the application needs of control unit
Enter row data communication, data storage, data processing, data operation, data query, data maintenance, data modification and data to update
Operation；
Described control unit by man-machine interaction unit, according to application demand to data communication units, database and management system,
Transient state monitoring unit, security evaluation unit, fault alarm unit and system maintenance unit are controlled, and realize corresponding function；
The transient state monitoring unit sets power network, unit, excitation system, starter and station service electrical system in unit starting process
In transient operating mode monitoring function, i.e.,：A-c cycle is monitored, the real-time instantaneous value of voltage and current, transient state virtual value, transient state are equivalent
Active power, reactive power, apparent energy and power factor and DC voltage, electric current change with time rule, with data
Display with curve is showed；The inquiry of historical data function；Off-limit alarm function；Fault diagnosis functions；
The security evaluation unit is according to the safety of the real-time and historical data of unit starting index of security assessment to unit starting
Property be estimated, when the probability that unit can not normally start be less than unit starting success rate performance assessment criteria 50% when, define unit can
With clean boot；When the probability that unit can not normally start is more than unit starting success rate performance assessment criteria 50%, less than unit starting
During success rate performance assessment criteria 80%, clean boot can be compared by defining unit；When the probability that unit can not normally start is more than unit
Start success rate performance assessment criteria 80%, during less than or equal to unit starting success rate performance assessment criteria 100%, define unit starting and exist
Potential safety hazard；When the probability that unit can not normally start is more than unit starting success rate performance assessment criteria, defining unit can not pacify
It is complete to start；
Security evaluation unit sets display and the query function of the real time data and historical data of unit starting index of security assessment；
Unit starting security evaluation analytic function, when there is potential safety hazard, alert is proposed to eliminate by security evaluation unit
The suggested measures of potential safety hazard；
The fault alarm unit gathers fault message and concentration transient state prison that intelligent terminal is obtained according to from transient state Monitoring Data
Survey with security evaluation work station self test failure information, send the sound and word warning message, point out fault type, title, place,
Time and treatment measures；
The system maintenance unit sets data backup, data renewal, system recovery, parameter setting, function setting function；
The man-machine interaction unit sets keyboard, mouse, data input/output interface and display function.
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