CN109687508A - A kind of generation of electricity by new energy unit fast frequency response control mehtod and device - Google Patents
A kind of generation of electricity by new energy unit fast frequency response control mehtod and device Download PDFInfo
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- H02J3/383—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- 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
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The present invention provides a kind of generation of electricity by new energy unit fast frequency response control mehtod and device, case becomes the active power that measure and control device determines generation of electricity by new energy unit；Case becomes measure and control device and determining active power apportioning cost is handed down to the photovoltaic DC-to-AC converter or fan converter；Photovoltaic DC-to-AC converter or fan converter generate electricity according to active power apportioning cost, not only reduce workload and cost, and shorten the frequency response time of generation of electricity by new energy unit in new energy station；The quick control of photovoltaic plant active power may be implemented in the present invention, response time reached within 5 seconds, reduce controller and the direct communication links of inverter, case can also be used to become the measure and control device natively signals such as acquired transformer voltage, electric current, power, frequency simultaneously, it is used directly to fast frequency response control, it does not need in addition to increase hardware device, can also be effectively reduced cost while guaranteeing high-speed traffic control.
Description
Technical field
The present invention relates to field of new energy technologies, and in particular to a kind of generation of electricity by new energy unit fast frequency response control side
Method and device.
Background technique
New energy development in recent years is swift and violent, as the new energy of high proportion randomness, fluctuation concentrates access power grid, power grid
Frequency modulation pressure and safe operation risk constantly increase；It is in particular in following aspects:
(1) lead to the increase of electric system spare capacity needs.The premise of power system stability operation is power generation and electricity consumption
Real-time Balancing, system power quality otherwise can be caused to decline, or even can be occurred unstable.For this purpose, often being needed in electric system
Certain spare capacity is configured, to eliminate instantaneous unbalanced power.And the randomness fluctuation of new energy will aggravate system
In this unbalanced power phenomenon, although new energy forecasting accuracy is stepping up, ultra-short term so that in real time prediction
There are still very big uncertainties, it means that electric system needs bigger spinning reserve capacity to realize reliability service.
(2) electric system inertial response and Primary frequency control ability reduce.With the large-scale grid connection of new energy, it is meant that not
It is out of service to carry out the part conventional power generation unit that electric system Central Plains has.To pursue maximum power point (maximum power
Point, MPPT) operation, it is spare that new energy is not provided with function, thus similar traditional machine can not be provided when system frequency declines
The ancillary services such as the frequency modulation of group.In the case, if this part inertial response and frequency regulation capability of missing cannot be mended
It fills, weakens system entirety inertia and frequency regulation capability, (unit off-grid, line fault, load are prominent so that system is in disturbance
Become) under frequency change rate increase, frequency minimum point reduce, steady frequency deviation increase, occurrence frequency stability problem more frequency
It is numerous.
(3) new energy power station access has an impact the voltage of grid, in some instances it may even be possible to voltage stability be caused to be asked
Topic；The curent change of new energy power station output can also cause voltage fluctuation, make load side voltage out-of-limit, and it is by meteorological condition
It is affected, voltage fluctuation but will be aggravated, cause the frequent movement of Voltage-Reactive Power regulating device.Currently, the tune that new energy networks
Pressure measure mainly has reactive compensation and idle reasonable distribution, the pressure regulation of on-load regulator transformer on-load, reactive compensation and has load
The comprehensive pressure regulation of adjustable transformer and installing shunt reactor or capacitance group pressure regulation.
New energy is increasingly considered having having similar to conventional power source as the vital power supply in the following power grid
The ancillary services abilities such as power control system, frequency and voltage adjusting.New energy is actively engaged in mains frequency and voltage adjustment has become
The inevitable choice for ensureing wind-electricity integration safety, improving new energy consumption space.
(4) with the continuous raising of NW China power grid new energy accounting, extra-high voltage direct-current transmission gradually puts into operation, power grid fortune
Capable and structure more sophisticated, power grid generating system frequency modulation difficulty continue to increase, and need new energy and participate in the response of power grid fast frequency,
It is horizontal to promote bulk power grid frequency risk prevention system.New energy station should have fast frequency response function, generally require whole station system
Lag time, the response time, regulating time controlled the period less than 1 second, frequency accuracy is less than less than 15 seconds less than 5 seconds less than 2 seconds
0.003Hz.New energy station need to have fast frequency response function, and storage power station need to carry out relevant art transformation.Soon general
Come, fast frequency response function will become the standard configuration of large-scale new energy power station operation control.
The currently used communication means in new energy station is to place communication controler on the spot in generation of electricity by new energy unit, is used
Become the equipment operation letter on the spot such as measure and control device, photovoltaic DC-to-AC converter, blower master control set, fan converter, header box in vasculum
Breath is sent to station monitoring and Energy Management System, and receives the control of automatic electricity generation control system on optical fiber ring network.Communication control
The effect of device processed is: 1) interface equipments such as the RS485/232 of equipment on the spot being uniformly converted to Ethernet or fiber optic Ethernet connects
Mouthful；2) equipment MODBUS or other communication protocols IEC104 specification will be uniformly converted on the spot；3) equipment operation information is adopted on the spot
Collection and on give, station monitoring issued with what energy management Background control instructed.Since new energy station generator unit is more and right
The performance dependence of communication controler is very big, realizes that the difficulty of fast frequency response is larger using this communication mode, main to show
It is partially long in the control response time, generally in 30s or more, and it is difficult to advanced optimize.
Relative to conventional large hydropower station or thermal power plant, new energy power station have single-machine capacity is small, current transformer quantity is more,
Distribution distance is remote, the feature more than communication-hierarchy level, and big using traditional network communication mode information delay, control response is not in time.
In order to realize the fast frequency response function of new energy power station, the prior art generally passes through the original Automatic Generation Control system of transformation
System increases the realization generation of electricity by new energy unit fast frequency response controls such as fast frequency response system, transformation photovoltaic DC-to-AC converter, general
Store-through is the problems such as retrofit work amount is big, at high cost, the response time is long.
Summary of the invention
In order to overcome the shortcomings of that above-mentioned heavy workload in the prior art, at high cost and response time are long, the present invention provides one
Kind generation of electricity by new energy unit fast frequency response control mehtod and device, case become the reality of electric system of the measure and control device based on acquisition
The active power initial value of border frequency and generation of electricity by new energy unit determines the active power of generation of electricity by new energy unit；Case becomes measure and control device
The active power apportioning cost determined based on the active power of generation of electricity by new energy unit is handed down to the photovoltaic DC-to-AC converter or blower
Current transformer；The photovoltaic DC-to-AC converter or fan converter generate electricity according to active power apportioning cost, and this programme becomes observing and controlling by case
Device is realized, controller and the direct communication links of inverter are reduced, while it is original that case can also be used to become measure and control device
Just acquired signal is used directly to fast frequency response control, does not need in addition to increase hardware device, is guaranteeing quickly to lead to
Workload and cost are not only reduced while letter control, and the frequency for shortening generation of electricity by new energy unit in new energy station is rung
Between seasonable.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that:
On the one hand, the present invention provides a kind of generation of electricity by new energy unit fast frequency response control mehtod, the new energy hair
Electric unit includes photovoltaic DC-to-AC converter or fan converter, comprising:
At the beginning of case becomes the actual frequency of electric system of the measure and control device based on acquisition and the active power of generation of electricity by new energy unit
It is worth the active power for determining generation of electricity by new energy unit；
Case is become measure and control device and is handed down to the active power apportioning cost determined based on the active power of generation of electricity by new energy unit
The photovoltaic DC-to-AC converter or fan converter；
The photovoltaic DC-to-AC converter or fan converter generate electricity according to active power apportioning cost.
The determination of the active power initial value of the generation of electricity by new energy unit, comprising:
If the Rapid Frequency of active command change direction and the generation of electricity by new energy unit that automatic electricity generation control system issues
Rate response regulation is contrary, and the case becomes measure and control device and is not responding to the variation of automatic electricity generation control system active command, described new
The active power initial value of energy generator unit remains unchanged；
If the Rapid Frequency of active command change direction and the generation of electricity by new energy unit that automatic electricity generation control system issues
Rate response regulation direction is identical, and the case becomes measure and control device response automatic electricity generation control system active command variation, will send out automatically
Active power initial value of the active command that electric control system issues as generation of electricity by new energy unit.
The determination of the active power of the generation of electricity by new energy unit, such as following formula:
In formula, P is the active power of generation of electricity by new energy unit, P0For the active power initial value of generation of electricity by new energy unit, PNFor
The rated power of generation of electricity by new energy unit；F is the actual frequency of electric system, fNFor the rated frequency of electric system, fdIt is quick
Frequency response dead zone；δ % is that new energy fast frequency responds permanent speed regulation, Hz/MW；f1For the active power of generation of electricity by new energy unit
Raise finish time corresponding frequency, f2Deadband lower limit, f are responded for fast frequency3Deadband upper limit, f are responded for fast frequency4For
The active power of generation of electricity by new energy unit lowers finish time corresponding frequency, and f1< f2< 50Hz < f3< f4。
When the generation of electricity by new energy unit is photovoltaic generation unit, fast frequency response dead zone is ± 0.06Hz, institute
Stating new energy fast frequency response permanent speed regulation is 3%；
When the generation of electricity by new energy unit is wind power generation unit, fast frequency response dead zone is ± 0.1Hz, described
It is 2% that new energy fast frequency, which responds permanent speed regulation,.
The determination of the active power apportioning cost, comprising:
Number based on photovoltaic DC-to-AC converter or fan converter, by the active power mean allocation of generation of electricity by new energy unit,
Obtain active power apportioning cost.
On the other hand, the present invention also provides a kind of generation of electricity by new energy unit fast frequency response control apparatus, comprising:
Case becomes measure and control device, for the actual frequency of the electric system based on acquisition and the wattful power of generation of electricity by new energy unit
Rate initial value determines the active power of generation of electricity by new energy unit, and active by being determined based on the active power of generation of electricity by new energy unit
Power assignment value is handed down to the generation of electricity by new energy unit；
Generation of electricity by new energy unit, for generating electricity according to active power apportioning cost.
The case becomes measure and control device and is specifically used for:
If the Rapid Frequency of active command change direction and the generation of electricity by new energy unit that automatic electricity generation control system issues
Rate response regulation is contrary, and the case becomes measure and control device and is not responding to the variation of automatic electricity generation control system active command, described new
The active power initial value of energy generator unit remains unchanged；
If the Rapid Frequency of active command change direction and the generation of electricity by new energy unit that automatic electricity generation control system issues
Rate response regulation direction is identical, and the case becomes measure and control device response automatic electricity generation control system active command variation, will send out automatically
Active power initial value of the active command that electric control system issues as generation of electricity by new energy unit.
The case becomes the active power that measure and control device determines generation of electricity by new energy unit as the following formula:
In formula, P is the active power of generation of electricity by new energy unit, P0For the active power initial value of generation of electricity by new energy unit, PNFor
The rated power of generation of electricity by new energy unit；F is the actual frequency of electric system, fNFor the rated frequency of electric system, fdIt is quick
Frequency response dead zone；δ % is that new energy fast frequency responds permanent speed regulation, Hz/MW；f1For the active power of generation of electricity by new energy unit
Raise finish time corresponding frequency, f2Deadband lower limit, f are responded for fast frequency3Deadband upper limit, f are responded for fast frequency4For
The active power of generation of electricity by new energy unit lowers finish time corresponding frequency, and f1< f2< 50Hz < f3< f4。
When the generation of electricity by new energy unit is photovoltaic generation unit, fast frequency response dead zone is ± 0.06Hz, institute
Stating new energy fast frequency response permanent speed regulation is 3%；
When the generation of electricity by new energy unit is wind power generation unit, fast frequency response dead zone is ± 0.1Hz, described
It is 2% that new energy fast frequency, which responds permanent speed regulation,.
The case become measure and control device also particularly useful for:
Based on the number of photovoltaic DC-to-AC converter or fan converter in generation of electricity by new energy unit, by having for generation of electricity by new energy unit
The distribution of function power averaging, obtains active power apportioning cost.
Compared with the immediate prior art, technical solution provided by the invention is had the advantages that
The present invention is provided in technical solution, and case becomes the actual frequency and new energy of electric system of the measure and control device based on acquisition
The active power initial value of generator unit determines the active power of generation of electricity by new energy unit；Case, which will become measure and control device, to be sent out based on new energy
The active power apportioning cost that the active power of electric unit determines is handed down to the photovoltaic DC-to-AC converter or fan converter；Photovoltaic inversion
Device or fan converter generate electricity according to active power apportioning cost, and this programme becomes measure and control device by case to realize, reduce control
Device processed and the direct communication links of inverter, at the same case can also be used to become measure and control device natively acquired signal is direct
It for fast frequency response control, does not need in addition to increase hardware device, not only be reduced while guaranteeing high-speed traffic control
Workload and cost, and shorten the frequency response time of generation of electricity by new energy unit in new energy station；
The quick control of photovoltaic plant active power may be implemented in the present invention, and the response time reached within 5 seconds, realizes than passing
Water power, thermoelectricity unite with more superior primary frequency modulation performance；
The present invention becomes measure and control device by case and realizes generation of electricity by new energy unit fast frequency response control, reduces controller
With the direct communication links of inverter, while can also use case become measure and control device natively acquired transformer voltage,
The signals such as electric current, power, frequency are used directly to fast frequency response control, do not need in addition to increase hardware device, are guaranteeing fastly
It can also be effectively reduced cost while fast communication control.
Detailed description of the invention
Fig. 1 is generation of electricity by new energy unit fast frequency response control mehtod flow chart in the embodiment of the present invention；
Fig. 2 is active-frequency controlling curve schematic diagram of wind power generation unit in the embodiment of the present invention；
Fig. 3 is active-frequency controlling curve schematic diagram of photovoltaic generation unit in the embodiment of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
The embodiment of the present invention 1 provides a kind of generation of electricity by new energy unit fast frequency response control mehtod, generation of electricity by new energy
Unit includes photovoltaic DC-to-AC converter or fan converter, and specific flow chart is as shown in Figure 1, detailed process is as follows:
S101: case becomes the actual frequency of electric system of the measure and control device based on acquisition and the wattful power of generation of electricity by new energy unit
Rate initial value determines the active power of generation of electricity by new energy unit；
S102: case becomes measure and control device will be under the active power apportioning cost that determined based on the active power of generation of electricity by new energy unit
Issue photovoltaic DC-to-AC converter or fan converter；
S103: photovoltaic DC-to-AC converter or fan converter generate electricity according to active power apportioning cost.
In above-mentioned S101, the determination of the active power initial value of generation of electricity by new energy unit, detailed process is as follows:
If the fast frequency of active command change direction and generation of electricity by new energy unit that automatic electricity generation control system issues is rung
Should adjust it is contrary, case become measure and control device be not responding to automatic electricity generation control system active command variation, generation of electricity by new energy unit
Active power initial value remain unchanged；
If the fast frequency of active command change direction and generation of electricity by new energy unit that automatic electricity generation control system issues is rung
It is identical that direction should be adjusted, case becomes measure and control device response automatic electricity generation control system active command variation, by Automatic Generation Control system
Active power initial value of the active command issued of uniting as generation of electricity by new energy unit.
In above-mentioned S101, the determination of the active power of generation of electricity by new energy unit, such as following formula:
In formula, P is the active power of generation of electricity by new energy unit, P0For the active power initial value of generation of electricity by new energy unit, PNFor
The rated power of generation of electricity by new energy unit；F is the actual frequency of electric system, fNFor the rated frequency of electric system, fdIt is quick
Frequency response dead zone；δ % is that new energy fast frequency responds permanent speed regulation, Hz/MW；f1For the active power of generation of electricity by new energy unit
Raise finish time corresponding frequency, f2Deadband lower limit, f are responded for fast frequency3Deadband upper limit, f are responded for fast frequency4For
The active power of generation of electricity by new energy unit lowers finish time corresponding frequency, and f1< f2< 50Hz < f3< f4。
Generation of electricity by new energy unit refers to the controllable generator unit of minimum in new energy station, it becomes (box change by a case
The abbreviation of depressor) and its connection new energy equipment constitute.Generation of electricity by new energy unit can be wind power generation unit, can also
Think photovoltaic generation unit.For wind power generation unit, wind power generation unit is generally by 1 box type transformer, 1 typhoon
Machine, 1 Fans master control set, 1 Fans current transformer etc. are constituted, and wind-power electricity generation becomes boosting through case and is followed by into wind power plant booster stations.
For photovoltaic generation unit, photovoltaic generation unit is generally by 1 box type transformer, distribution switchgear cabinet, more photovoltaic inversions
Device and header box, corresponding photovoltaic array etc. are constituted.For string type photovoltaic generation unit, generally there is 20-40 platform photovoltaic inverse
Become device.
To avoid blower from excessively frequently adjusting the loss to equipment, at the same play photovoltaic electric power electronic device quickly adjust it is excellent
Gesture, considers the difference in terms of more frequency modulation resource frequency modulation dynamic characteristics, and wind power generation unit and photovoltaic generation unit use differentiation
Fast frequency hopping parameter setting.
It is directed to wind power generation unit, active-frequency controlling curve of wind power generation unit is as shown in Fig. 2, abscissa table
Show that the actual frequency f of electric system, ordinate indicate the active power of wind power generation unit, wind power generation unit fast frequency hopping is dead
Area's setting ± 0.1Hz, permanent speed regulation 2%, power limiting 10%PN；f1、f2、f3、f4Take respectively 49.8Hz, 49.9Hz,
50.1Hz、50.2Hz。
It is directed to photovoltaic generation unit, active-frequency controlling curve of photovoltaic generation unit is as shown in figure 3, abscissa table
Show that the actual frequency f of electric system, ordinate indicate the active power of photovoltaic generation unit, wind power generation unit fast frequency hopping is dead
Area's setting ± 0.06Hz, permanent speed regulation 3%, power limiting 10%PN；f1、f2、f3、f4Take respectively 49.8Hz, 49.94Hz,
50.06Hz,50.2Hz.The determination of above-mentioned active power apportioning cost, the specifically number based on photovoltaic DC-to-AC converter or fan converter
The active power mean allocation of generation of electricity by new energy unit is obtained active power apportioning cost by mesh.
The embodiment of the present invention becomes measure and control device by case and realizes generation of electricity by new energy unit fast frequency response control, reduces
Controller and the direct communication links of inverter, while case can also be used to become measure and control device natively acquired transformer
The signals such as voltage, electric current, power, frequency are used directly to fast frequency response control, do not need in addition to increase hardware device,
Guarantee to effectively reduce cost while high-speed traffic control.
Case becomes the characteristics of measure and control device is mainly for new energy grid-connected power and user and becomes protection, observing and controlling, communication to case
The extensive a high-intelligentization product for requiring and developing, which has merged communication processor, optical fiber ring network interchanger and complete
Kind case becomes protection observing and controlling function in one, is responsible for the number of the equipment such as vasculum change, header box, inverter, blower main control unit
It is believed that breath, then it is reliably transferred to booster stations monitoring system through self-healing Ethernet/optical fiber ring network, realize booster stations to new energy
The long-range monitoring of generator unit, thus meet new energy power station remotely monitor, the requirement of intelligent management.
Case becomes measure and control device and has telecommunication management function, collects multichannel ethernet communication, optical fiber ring network interface, RS485 serial ports
The affluent resources such as interface communication support 103,104, a variety of specifications such as MODBUS, realize related running equipment in generator unit
Analog quantity and quantity of state acquisition and on give, while receiving the remote regulating telecommand of higher level's control system, take in control network
The role of node hinge.In photovoltaic plant, case becomes measure and control device the modes such as can communicate for header box, inverter by RS485
Equal smart machines can data acquisition get up, while directly information such as vasculum time variant voltage, electric current, power, temperature, state are each
The Cell that generates electricity by way of merging two or more grid systems, which becomes between measure and control device, monitoring system and AGC/AVC system, forms looped network, each power generation using optical fiber
Unit becomes measure and control device by case, to monitoring system and AGC/AVC system real-time Transmission generator unit operation information, and receives
The generated output control instruction of AGC/AVC system adjusts the active power and reactive power of inverter in real time.Wind power plant communication network
Network is similar to photovoltaic plant, and photovoltaic DC-to-AC converter and header box correspondence is only needed to be changed to blower inverter and master control set.
Case become measure and control device use 5U half storey cabinet, whole face plate, carry on the back insert formula structure, rear wiring mounting means, strong and weak electricity every
From strengthening the electric property of its product.Device cabinet uses totally-enclosed, dust-proof, anti-vibration design, it is ensured that device is installed on
Still has very high reliability when the scene of inclement condition.
Case become measure and control device be made of following plug-in unit: CPU card, exchange plug-in unit (AC), input and output plug-in unit (DI/DO),
Power supply is opened into plug-in unit (POW/DI) and human-computer dialogue plug-in unit (MMI).
(1) CPU card
Present apparatus basic configuration is two pieces of CPU modules: a block protection CPU is the protection observing and controlling being made of 32-bit microprocessor
Unit, the unit are configured with the function of the chips such as RAM, Flash Memory and the AD of large capacity, have extremely strong data processing,
Logical operation and information storage capability；Another piece is the communication management unit for communicating CPU and being a highly integrated, and is integrated with 4 tunnel power ports,
2 tunnel optical ports, 7 road RS485 access ports.Communicate mutually indepedent between CPU card and protection CPU card, no dependence.
CPU card uses multilayer board and surface packaging technique, and appearance is small and exquisite, compact-sized, substantially increases dress
The reliability and anti-electromagnetic interference capability set.In addition:
A. protection CPU card also provides 4 drive test temperature loops, and every road can measure thermistor (Pt100 or Cu50) and straight
It flows (4-20mA or 0-5V), it can be according to input signal flexible choice.
B. communication CPU card also provides 2 groups of optical ports, 2 tunnel power ports.
Optical port: 2 groups of 10/100Base-FX optical ports, standard SC interface constitute optical fiber ring network switch function, prevent light
Any channel broken string in fibre web network, the network communication for influencing whole region is reliable, and network is made to be in redundant mode.
Power port: 2 road ethernet standard RJ45R interface branch, not only be used as device debugging mouth, but also support IEC60870-5-103,
The teletransmissions specification such as IEC60870-5-104, MODBUS, CDT.
(2) plug-in unit (AC) is exchanged
Exchange plug-in unit includes electric current input and two parts of voltage input, for the input of 6 road electric currents and 6 tunnel voltage inputs.
Exchange plug-in unit inside include current isolation mutual inductor and voltage isolation transformer, for by the secondary current of system,
Voltage signal is converted to weak electric signal through isolation transformer, is input to A-D converter, the sampled number of CPU by low-pass filter
After signal processing, voltage, electric current, active and reactive, power factor etc. are calculated in real time.
(3) input and output plug-in unit (DI/DO)
Case becomes measure and control device and shares 36 way switch amounts input contact, is all made of forceful electric power and directly inputs, device software takes
Stabilization measure, avoids and accidentally transmits.Wherein preceding 6 tunnel is fixed as case change non-electric charge quantity signalling acquisition access, other 30 tunnels are for real-time
The various quantity of states that vasculum becomes.
Input and output plug-in unit equipped with No. 6 relays export, can be used programming in logic mode be flexibly set as remote control outlet or
Protection exit.
(4) power supply is opened into plug-in unit (POW/DI)
Power supply opens plug-in unit using Switching Power Supply: DC/AC (85~265) V voltage input is behind anti-interference filtration circuit, benefit
Become the DC voltage 5V and 24V that measure and control device needs with inverter delivery casing, and using floating ground mode, is not attached to shell.
(5) human-computer dialogue plug-in unit (MMI)
Human-computer dialogue plug-in unit (MMI) provides 7 road RS485 serial communication interfaces, can access the inversion of photovoltaic power station power generation unit
The smart machines such as device, header box, kilowatt-hour meter complete the data forwarding between master station.
Embodiment 2
Based on the same inventive concept, the embodiment of the present invention 2 also provides a kind of generation of electricity by new energy unit fast frequency response control
Device processed, including case become measure and control device and generation of electricity by new energy unit, and the function of above-mentioned several modules is described in detail below:
Case becomes measure and control device, for the actual frequency of the electric system based on acquisition and the wattful power of generation of electricity by new energy unit
Rate initial value determines the active power of generation of electricity by new energy unit, and active by being determined based on the active power of generation of electricity by new energy unit
Power assignment value is handed down to generation of electricity by new energy unit；
Generation of electricity by new energy unit, for generating electricity according to active power apportioning cost.
Above-mentioned case becomes measure and control device and determines that the active power initial value process of generation of electricity by new energy unit is as follows:
If the fast frequency of active command change direction and generation of electricity by new energy unit that automatic electricity generation control system issues is rung
Should adjust it is contrary, case become measure and control device be not responding to automatic electricity generation control system active command variation, generation of electricity by new energy unit
Active power initial value remain unchanged；
If the fast frequency of active command change direction and generation of electricity by new energy unit that automatic electricity generation control system issues is rung
It is identical that direction should be adjusted, case becomes measure and control device response automatic electricity generation control system active command variation, by Automatic Generation Control system
Active power initial value of the active command issued of uniting as generation of electricity by new energy unit.
Case becomes the active power that measure and control device determines generation of electricity by new energy unit as the following formula:
In formula, P is the active power of generation of electricity by new energy unit, P0For the active power initial value of generation of electricity by new energy unit, PNFor
The rated power of generation of electricity by new energy unit；F is the actual frequency of electric system, fNFor the rated frequency of electric system, fdIt is quick
Frequency response dead zone；δ % is that new energy fast frequency responds permanent speed regulation, Hz/MW；f1For the active power of generation of electricity by new energy unit
Raise finish time corresponding frequency, f2Deadband lower limit, f are responded for fast frequency3Deadband upper limit, f are responded for fast frequency4For
The active power of generation of electricity by new energy unit lowers finish time corresponding frequency, and f1< f2< 50Hz < f3< f4。
Above-mentioned case change measure and control device, will be new based on the number of photovoltaic DC-to-AC converter or fan converter in generation of electricity by new energy unit
The active power mean allocation of energy generator unit, obtains active power apportioning cost.
For convenience of description, each section of apparatus above is divided into various modules with function or unit describes respectively.Certainly,
Each module or the function of unit can be realized in same or multiple softwares or hardware when implementing the application.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute
The those of ordinary skill in category field can still modify to a specific embodiment of the invention referring to above-described embodiment or
Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement
Within bright claims.
Claims (10)
1. a kind of generation of electricity by new energy unit fast frequency response control mehtod, the generation of electricity by new energy unit includes photovoltaic DC-to-AC converter
Or fan converter characterized by comprising
The actual frequency of case change electric system of the measure and control device based on acquisition and the active power initial value of generation of electricity by new energy unit are true
Determine the active power of generation of electricity by new energy unit；
Case change measure and control device will be handed down to described based on the determining active power apportioning cost of the active power of generation of electricity by new energy unit
Photovoltaic DC-to-AC converter or fan converter；
The photovoltaic DC-to-AC converter or fan converter generate electricity according to active power apportioning cost.
2. generation of electricity by new energy unit fast frequency response control mehtod according to claim 1, which is characterized in that described new
The determination of the active power initial value of energy generator unit, comprising:
If the fast frequency of active command change direction and the generation of electricity by new energy unit that automatic electricity generation control system issues is rung
It should adjust contrary, the case becomes measure and control device and is not responding to the variation of automatic electricity generation control system active command, the new energy
The active power initial value of generator unit remains unchanged；
If the fast frequency of active command change direction and the generation of electricity by new energy unit that automatic electricity generation control system issues is rung
It is identical that direction should be adjusted, the case becomes measure and control device response automatic electricity generation control system active command variation, by automatic generation control
Active power initial value of the active command that system processed issues as generation of electricity by new energy unit.
3. generation of electricity by new energy unit fast frequency response control mehtod according to claim 1 or 2, which is characterized in that institute
State the determination of the active power of generation of electricity by new energy unit, such as following formula:
4. in formula, P is the active power of generation of electricity by new energy unit, P0For the active power initial value of generation of electricity by new energy unit, PNIt is new
The rated power of energy generator unit；F is the actual frequency of electric system, fNFor the rated frequency of electric system, fdFor Rapid Frequency
Rate responds dead zone；δ % is that new energy fast frequency responds permanent speed regulation, Hz/MW；f1In active power for generation of electricity by new energy unit
Adjust finish time corresponding frequency, f2Deadband lower limit, f are responded for fast frequency3Deadband upper limit, f are responded for fast frequency4It is new
The active power of energy generator unit lowers finish time corresponding frequency, and f1< f2< 50Hz < f3< f4.It is wanted according to right
Generation of electricity by new energy unit fast frequency response control mehtod described in asking 3, which is characterized in that the generation of electricity by new energy unit is light
When lying prostrate generator unit, fast frequency response dead zone is ± 0.06Hz, and the new energy fast frequency response permanent speed regulation is
3%；
When the generation of electricity by new energy unit is wind power generation unit, fast frequency response dead zone is ± 0.1Hz, the new energy
It is 2% that source fast frequency, which responds permanent speed regulation,.
5. generation of electricity by new energy unit fast frequency response control mehtod according to claim 1, which is characterized in that described to have
The determination of function power assignment value, comprising:
Number based on photovoltaic DC-to-AC converter or fan converter obtains the active power mean allocation of generation of electricity by new energy unit
Active power apportioning cost.
6. a kind of generation of electricity by new energy unit fast frequency response control apparatus characterized by comprising
Case becomes measure and control device, at the beginning of the actual frequency of the electric system based on acquisition and the active power of generation of electricity by new energy unit
It is worth the active power for determining generation of electricity by new energy unit, and the active power that will be determined based on the active power of generation of electricity by new energy unit
Apportioning cost is handed down to the generation of electricity by new energy unit；
Generation of electricity by new energy unit, for generating electricity according to active power apportioning cost.
7. generation of electricity by new energy unit fast frequency response control apparatus according to claim 6, which is characterized in that the case
Become measure and control device to be specifically used for:
If the fast frequency of active command change direction and the generation of electricity by new energy unit that automatic electricity generation control system issues is rung
It should adjust contrary, the case becomes measure and control device and is not responding to the variation of automatic electricity generation control system active command, the new energy
The active power initial value of generator unit remains unchanged；
If the fast frequency of active command change direction and the generation of electricity by new energy unit that automatic electricity generation control system issues is rung
It is identical that direction should be adjusted, the case becomes measure and control device response automatic electricity generation control system active command variation, by automatic generation control
Active power initial value of the active command that system processed issues as generation of electricity by new energy unit.
8. generation of electricity by new energy unit fast frequency response control apparatus according to claim 6 or 7, which is characterized in that institute
It states case and becomes the active power that measure and control device determines generation of electricity by new energy unit as the following formula:
In formula, P is the active power of generation of electricity by new energy unit, P0For the active power initial value of generation of electricity by new energy unit, PNFor new energy
The rated power of source generator unit；F is the actual frequency of electric system, fNFor the rated frequency of electric system, fdFor fast frequency
Respond dead zone；δ % is that new energy fast frequency responds permanent speed regulation, Hz/MW；f1It is raised for the active power of generation of electricity by new energy unit
Finish time corresponding frequency, f2Deadband lower limit, f are responded for fast frequency3Deadband upper limit, f are responded for fast frequency4For new energy
The active power of source generator unit lowers finish time corresponding frequency, and f1< f2< 50Hz < f3< f4。
9. generation of electricity by new energy unit fast frequency response control apparatus according to claim 8, which is characterized in that described new
When energy generator unit is photovoltaic generation unit, fast frequency response dead zone is ± 0.06Hz, the new energy Rapid Frequency
It is 3% that rate, which responds permanent speed regulation,；
When the generation of electricity by new energy unit is wind power generation unit, fast frequency response dead zone is ± 0.1Hz, the new energy
It is 2% that source fast frequency, which responds permanent speed regulation,.
10. generation of electricity by new energy unit fast frequency response control apparatus according to claim 6, which is characterized in that described
Case become measure and control device also particularly useful for:
Based on the number of photovoltaic DC-to-AC converter or fan converter in generation of electricity by new energy unit, by the wattful power of generation of electricity by new energy unit
Rate mean allocation obtains active power apportioning cost.
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| CN110176790A (en) * | 2019-05-29 | 2019-08-27 | 王阳 | The Poewr control method and system at the generation of electricity by new energy station with fast frequency response |
| CN110350592A (en) * | 2019-06-03 | 2019-10-18 | 南京国电南自电网自动化有限公司 | A kind of fast frequency responding power control system and method |
| CN110365030A (en) * | 2019-08-09 | 2019-10-22 | 武汉能众科技有限公司 | A kind of new energy fast frequency response control apparatus |
| CN110943480A (en) * | 2019-11-25 | 2020-03-31 | 深圳大学 | Power system frequency modulation method and device, computer equipment and storage medium |
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| CN110176790A (en) * | 2019-05-29 | 2019-08-27 | 王阳 | The Poewr control method and system at the generation of electricity by new energy station with fast frequency response |
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| CN110365030A (en) * | 2019-08-09 | 2019-10-22 | 武汉能众科技有限公司 | A kind of new energy fast frequency response control apparatus |
| CN110943480A (en) * | 2019-11-25 | 2020-03-31 | 深圳大学 | Power system frequency modulation method and device, computer equipment and storage medium |
| CN112398143A (en) * | 2020-10-28 | 2021-02-23 | 许继集团有限公司 | New energy power station frequency modulation control method and system containing energy storage |
| CN112928778A (en) * | 2021-01-27 | 2021-06-08 | 许继集团有限公司 | Power and frequency regulation control method for photovoltaic energy storage power station |
| CN112928778B (en) * | 2021-01-27 | 2023-11-28 | 许继集团有限公司 | Power and frequency regulation control method for photovoltaic energy storage power station |
| CN113078662A (en) * | 2021-05-19 | 2021-07-06 | 广东电网有限责任公司 | New energy rapid frequency response system and method |
| CN113078661A (en) * | 2021-05-19 | 2021-07-06 | 广东电网有限责任公司 | New energy rapid frequency response device and method |
| CN113708423A (en) * | 2021-09-27 | 2021-11-26 | 阳光电源股份有限公司 | Active power scheduling method and system of photovoltaic system |
| CN114050550A (en) * | 2021-11-17 | 2022-02-15 | 贵州电网有限责任公司 | Small hydropower nonstandard operation automatic isolation method |
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