CN107785932A - A kind of energy Real-time Balancing control system and its control method based on phase-change thermal storage - Google Patents
A kind of energy Real-time Balancing control system and its control method based on phase-change thermal storage Download PDFInfo
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- CN107785932A CN107785932A CN201711078678.1A CN201711078678A CN107785932A CN 107785932 A CN107785932 A CN 107785932A CN 201711078678 A CN201711078678 A CN 201711078678A CN 107785932 A CN107785932 A CN 107785932A
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/388—Islanding, i.e. disconnection of local power supply from the network
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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 invention discloses a kind of energy Real-time Balancing control system and its control method based on phase-change thermal storage, including computer processing unit, balancing the load control unit, high pressure Power Regulation unit, phase-change thermal storage heating unit；The balancing the load control unit is used to be connected with the new energy microgrid on power network bus and main power network step-up transformer low voltage side；The balancing the load control unit is used to gather voltage, the current information of the new energy microgrid and main power network step-up transformer low voltage side on bus in real time, the consumption power for needing to adjust is calculated in real time, the output voltage of the high pressure Power Regulation unit is calculated further according to the performance number for needing to adjust, so as to realize the consumption power for adjusting the phase-change thermal storage heating unit.The present invention realizes the real-time power balance control of new energy microgrid or emergency generator's system, reduces the fluctuation that power is exchanged with main power network, improves the reliability of its own system safe and stable operation, also reduces system and main power network safety operation is had an impact.
Description
Technical field
The present invention relates to the new energy micro-capacitance sensor of power supply or load fluctuation or provide the energy Real-time Balancing control of power system for oneself
A kind of field processed, and in particular to energy Real-time Balancing control system based on phase-change thermal storage.
Background technology
The extensive use of the new energy such as photovoltaic, wind-powered electricity generation is the important development direction of future source of energy technology, is that mankind's energy can
One only stage which must be passed by of sustainable development, it, which has, continues that renewable, can effectively preserve our planet environment and is advantageous to human health
Many advantages, such as.It is as shown in figure 1, for current new energy micro-capacitance sensor or female from the system typical structure schematic diagram such as standby electricity, 10kV
Line is connected with conventional power generation usage unit, photovoltaic generation, wind-power electricity generation, impact power load, general power load etc., and 10kV is female
Line is connected to higher level's power system or main power network by step-up transformer, unnecessary when generation of electricity by new energy exceedes power load demand
Power Transmission gives main power network, and when generation of electricity by new energy can not meet power load demand, the electric power needed, impact are provided by main power network
The load big ups and downs that property power load is brought also undertake smoothing function by main power network.But generation of electricity by new energy is easily by environment shadow
Ringing, its generated output has very big fluctuation, randomness and intermittence, when generation of electricity by new energy accesses main power network on a large scale,
Its safe and stable operation to main power network will make a big impact.How the fluctuation that smooth new energy resources system is contributed, be current
Need the problem of to be solved badly, simultaneity factor, which provides the single energy, can not meet the various energy resources demand of client.Therefore propose to use
The modes such as micro-capacitance sensor, local power net can improve flexibility and the stability of system to a certain extent.
On the other hand, many industry and commerce, which are provided for oneself in power system, has milling train, electric arc furnaces, high power motor startup etc. greatly
The power swing that amplitude is big, the frequency is intensive occurs in the fluctuation of amount, impact load, the load of these systems, Large Copacity
Impact, wavy load can the autonomous power supply system safe and stable operation weak to grid structure have an impact, it is pair mutual with it
The main power network of connection also has a negative impact.Solves power supply or negative using battery energy storage technology or high-field electrode boiler mostly at present
The fluctuation problem of lotus, but have that cost of investment is high, power swing stabilizes ability shortcoming, floor space is big, potential safety hazard, longevity be present
Order the deficiencies of short.Adversely affected to solve power supply or load fluctuation to caused by system, it is necessary to coordinate to examine in energy supplying system
Consider energy resource supply mode and the control of energy Real-time Balancing.
The content of the invention
To solve deficiency of the prior art, the present invention provides a kind of energy Real-time Balancing control system based on phase-change thermal storage
System, solves the problems, such as that new energy or load fluctuation make a big impact to the safe and stable operation of main power network, in the prior art
Using battery energy storage technology or high-field electrode boiler, to solve, there is cost of investment height in the fluctuation of power supply or load, power swing is put down
Suppression ability shortcoming, floor space is big, the problem of potential safety hazard, short life be present.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that：A kind of energy based on phase-change thermal storage is put down in real time
Weigh control system, it is characterised in that including computer processing unit, balancing the load control unit, high pressure Power Regulation unit, phase transformation storage
Hot heating unit；
The balancing the load control unit is used for low with the new energy microgrid on power network bus and main power network step-up transformer
Press side connection；
The balancing the load control unit is used to gather new energy microgrid and the main power network step-up transformer on bus in real time
Voltage, the current information of low-pressure side, the consumption power for needing to adjust is calculated in real time, is calculated further according to the performance number for needing to adjust
The output voltage of the high pressure Power Regulation unit, so as to realize the consumption power for adjusting the phase-change thermal storage heating unit.
A kind of foregoing energy Real-time Balancing control system based on phase-change thermal storage, it is characterized in that：The new energy microgrid
Including generation of electricity by new energy, conventional power generation usage unit, power load.
A kind of foregoing energy Real-time Balancing control system based on phase-change thermal storage, it is characterized in that：The high pressure Power Regulation list
Member includes the controller being connected with balancing the load control unit and the IGCT being connected with controller；The controller receives load
The IGBT group angle information that balance control unit is sent, so as to change the output voltage of IGCT.
A kind of foregoing energy Real-time Balancing control system based on phase-change thermal storage, it is characterized in that：The phase-change thermal storage supplies
Hot cell includes electric heater, heat storage box, heat exchanger, and thermal energy storage is in heat storage box caused by the electric heater, heat storage box
Be connected with heat exchanger, in heat exchanger by pipeline by the heat energy stored in heat storage box be conveyed to hot client or by heat exchanger with
The heating boiler of conventional power generation usage unit is connected, and hot water in heat exchanger is supplied to the heating boiler of conventional power generation usage unit, realizes storage
Heat-power generation cycle recycles.
A kind of foregoing energy Real-time Balancing control system based on phase-change thermal storage, it is characterized in that：The heat storage box is by phase
Become material to be made.
A kind of foregoing energy Real-time Balancing control system based on phase-change thermal storage, it is characterized in that：The computer disposal
Unit, for the monitoring of complete pairing energy Real-time Balancing control system, energy Real-time Balancing control system real time information is shown, is looked into
Ask historical record, data storage, autoreport.
A kind of energy Real-time Balancing control method based on phase-change thermal storage, it is characterized in that：Including step：
1) balancing the load control unit judges new energy by step-up transformer low voltage side circuit breaker position and current information
Microgrid is incorporated into the power networks with main power network or new energy microgrid departs from main power network isolated power grid；
2) when new energy microgrid and main power network are incorporated into the power networks, balancing the load control unit calculates quick regulation power in real time
P1：
Wherein, m is generating equipment quantity, and n is power load quantity, i=1-m, j=1-n；PGiGenerated electricity for new energy microgrid
Equipment i power output instantaneous value, PLjFor power load j power instantaneous value, PeFor new energy microgrid work(is exchanged with main power network
Rate setting value；
Current quick regulation power P1With a preceding quick regulation power P1Difference take absolute value Δ P1For：
ΔP1=| P1(k)–P1(k–1)| (2)
As Δ P1When ＞ acts threshold setting value, 3) balancing the load control unit, which is gone to step, to be completed to phase-change heat accumulation unit
Power quick regulation is consumed, k is positive integer；
2) when new energy microgrid departs from main power network isolated power grid, balancing the load control unit calculates quick regulation work(in real time
Rate P1Power P is adjusted with additional2；
Quick regulation power P is calculated in real time1It is calculated according to formula (1)；
As Δ P1When ＞ acts threshold setting value, 3) balancing the load control unit, which is gone to step, to be completed to phase-change heat accumulation unit
Consume power quick regulation；
Additional regulation power P2Computational methods be：
According to system frequency and the relational expression of system power：
Obtain：
Wherein, f is new energy microgrid frequency instantaneous value, PLPower instantaneous value, f are consumed for phase-change thermal storage heating unit0For frequency
Rate rated value, M are coefficient of frequency modulation；
Current additional regulation power P2With preceding once additional regulation power P2Difference take absolute value Δ P2For：
ΔP2=| P2(k)–P2(k–1)| (5)
As Δ P2When ＞ acts threshold setting value, balancing the load control unit goes to step 4) delay and completed to phase-change thermal storage list
The consumption power of member adds regulation；
3) as Δ P1When ＞ acts threshold setting value, balancing the load control unit is according to P1Value calculate the high pressure and adjust
The output voltage of work(unit, so as to realize the consumption power of phase-change thermal storage heating unit described in quick regulation；
4) as Δ P2When ＞ acts threshold setting value, balancing the load control unit is according to P2Value calculate the high pressure and adjust
The output voltage of work(unit, so as to realize the additional consumption power for adjusting the phase-change thermal storage heating unit.
A kind of foregoing energy Real-time Balancing control method based on phase-change thermal storage, it is characterized in that：The quick regulation phase
The consumption power control period for becoming heat accumulation heating unit is less than 20ms.
A kind of foregoing energy Real-time Balancing control method based on phase-change thermal storage, it is characterized in that：The additional regulation phase
The consumption power control period for becoming heat accumulation heating unit is set in balancing the load control unit, and its cycle is less than 100ms.
The beneficial effect that the present invention is reached：
1) present invention realizes the real-time power balance control of new energy microgrid or emergency generator's system, generate electricity so as to reaching and
Real-time power balance of the load in the case of fluctuation, intermittence, meets new energy microgrid or provides power system and main power network for oneself
Peak power exchanges constraint requirements, reduces the fluctuation that power is exchanged with main power network, improves its own system safe and stable operation
Reliability, also reduce system and main power network safety operation is had an impact；
2) in the case of isolated network also can Real-time Balancing system, the safe and stable operation for improving Isolated Network System is horizontal.
3) system reliability is high, and scalability is good, can arbitrarily adjust phase according to the service condition and situation of change of load
Become the consumption power of electric heater, so as to realize the regulation steady in a long-term to load 100%.
Brief description of the drawings
Fig. 1 is current new energy microgrid or from the system typical structure schematic diagram such as standby electricity；
Fig. 2 is the structural representation using energy Real-time Balancing control system.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating the present invention
Technical scheme, rather than limited the scope of the invention with this.
As shown in Fig. 2 a kind of energy Real-time Balancing control system based on phase-change thermal storage, including the computer being sequentially connected
Processing unit, balancing the load control unit, high pressure Power Regulation unit, phase-change thermal storage heating unit；Balancing the load control unit and electricity
New energy microgrid (i.e. all generations of electricity by new energy, conventional power generation usage unit, power load) and main power network liter on net bus (10kV)
Pressure transformer low-pressure side connects；
The high pressure Power Regulation unit, also referred to as power regulating eqiupment, including the controller that is connected with balancing the load control unit and with control
The IGCT (bidirectional triode thyristor rectifier cell) of device connection processed；The controller receives balancing the load control by fiber optic Ethernet
The IGBT group angle information that unit is sent, so as to change the output voltage of IGCT, that is, change and be added in phase-change thermal storage heat supply
The three-phase input voltage of unit electric heater, so as to realize regulation phase-change thermal storage heating unit electric heater in the range of 0~100%
Consumption power.
The phase-change thermal storage heating unit includes electric heater, heat storage box, the heat exchanger being sequentially connected, electric heater conduct
The consumption power apparatus of balancing the load control, heat storage box are made up of phase-change material；Thermal energy storage is in heat accumulation caused by electric heater
In case, heat storage box is connected with heat exchanger, and the heat energy stored in heat storage box can be conveyed to use by hot water by pipeline in heat exchanger
Hot client, heat exchanger can also be connected with the heating boiler of conventional power generation usage unit, hot water in heat exchanger is supplied to conventional hair
The heating boiler of group of motors, realize that heat accumulation-power generation cycle recycles.
New energy microgrid (all new energy hairs that the balancing the load control unit is used to gather in real time on 10kV buses
Electricity, conventional power generation usage unit, power load) and main power network step-up transformer low voltage side voltage, current information, in real time calculate need
The power of regulation, the trigger angle of high pressure Power Regulation unit IGCT is calculated further according to the performance number for needing to adjust, so as to realize
Adjust the consumption power of phase-change thermal storage heating unit；
Computer processing unit, it is real-time for the function for monitoring of complete pairing energy Real-time Balancing control system, display energy
Balance control system runnable interface and each equipment real time information, query history record, data storage, autoreport etc..
A kind of control method of the energy Real-time Balancing control system based on phase-change thermal storage, including step：
1) balancing the load control unit judges new energy by step-up transformer low voltage side circuit breaker position and current information
Microgrid is incorporated into the power networks with main power network or new energy microgrid departs from main power network isolated power grid；
2) when new energy microgrid and main power network are incorporated into the power networks, balancing the load control unit calculates quick regulation power in real time
P1：
Wherein, m is generating equipment quantity, and n is power load quantity, i=1-m, j=1-n；PGiGenerated electricity for new energy microgrid
Equipment i power output instantaneous value, PLjFor power load j power instantaneous value, PeFor new energy microgrid work(is exchanged with main power network
Rate setting value；
Current quick regulation power P1With a preceding quick regulation power P1Difference take absolute value Δ P1For：
ΔP1=| P1(k)–P1(k–1)| (2)
As Δ P1When ＞ acts threshold setting value, 3) balancing the load control unit, which is gone to step, to be completed to phase-change heat accumulation unit
Power quick regulation is consumed, k is positive integer；
2) when new energy microgrid departs from main power network isolated power grid, balancing the load control unit calculates quick regulation work(in real time
Rate P1Power P is adjusted with additional2；
Quick regulation power P is calculated in real time1It is calculated according to formula (1)；
As Δ P1When ＞ acts threshold setting value, 3) balancing the load control unit, which is gone to step, to be completed to phase-change heat accumulation unit
Consume power quick regulation；
Additional regulation power P2Computational methods be：
According to system frequency and the relational expression of system power：
Obtain：
Wherein, f is new energy microgrid frequency instantaneous value, PLPower instantaneous value, f are consumed for phase-change thermal storage heating unit0For frequency
Rate rate rated value, M are coefficient of frequency modulation；
Current additional regulation power P2With preceding once additional regulation power P2Difference take absolute value Δ P2For：
ΔP2=| P2(k)–P2(k–1)| (5)
As Δ P2When ＞ acts threshold setting value, balancing the load control unit goes to step 4) delay and completed to phase-change thermal storage list
The consumption power of member adds regulation；
3) as Δ P1When ＞ acts threshold setting value, balancing the load control unit is according to P1Value calculate again IGCT touch
Angle is sent out, sends the trigger angle of control IGCT to high pressure Power Regulation cell controller by fiber optic Ethernet, it is fast so as to realize
The consumption power of velocity modulation section phase-change thermal storage heating unit, the present invention can be realized from collection voltages current information to regulation phase transformation storage
Hot heating unit power completes quick regulation within 20ms；
4) as Δ P2When ＞ acts threshold setting value, balancing the load control unit is according to P2Value calculate again IGCT touch
Angle is sent out, then sends the trigger angle of control IGCT to high pressure Power Regulation cell controller by fiber optic Ethernet, so as to real
The now consumption power of additional regulation phase-change thermal storage heating unit；The consumption Power Control week of additional regulation phase-change thermal storage heating unit
Phase sets in balancing the load control unit, and the present invention can realize that the additional adjustment control cycle is less than 100ms；Additional regulation can
Acquisition Error, the change of electricity heating material temperature, the other disturbances of system etc. are comprehensive during effectively preventing new energy microgrid isolated power grid
System frequency is out-of-limit caused by factor, enhances regulating effect and Isolated Network System robustness.
The present invention realizes the real-time power balance control of new energy microgrid or emergency generator's system, generates electricity and bears so as to reach
Real-time power balance of the lotus in the case of fluctuation, intermittence, meets new energy microgrid or provides power system and main power network for oneself most
High-power exchange constraint requirements, reduce and the fluctuation of power exchanged with main power network, raising its own system safe and stable operation can
By property, also reduce system and main power network safety operation is had an impact.In the case of isolated network also can Real-time Balancing system, improve
The safe and stable operation of Isolated Network System is horizontal.
The system reliability is high, and scalability is good, can arbitrarily adjust phase transformation according to the service condition and situation of change of load
The consumption power of electric heater, so as to realize the regulation steady in a long-term to load 100%.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, some improvement and deformation can also be made, these are improved and deformation
Also it should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of energy Real-time Balancing control system based on phase-change thermal storage, it is characterised in that including computer processing unit, bear
Lotus balance control unit, high pressure Power Regulation unit, phase-change thermal storage heating unit；
The balancing the load control unit is used for and the new energy microgrid on power network bus and main power network step-up transformer low voltage side
Connection；
The balancing the load control unit is used to gather new energy microgrid and the main power network step-up transformer low pressure on bus in real time
Voltage, the current information of side, the consumption power for needing to adjust is calculated in real time, calculated further according to the performance number for needing to adjust described
The output voltage of high pressure Power Regulation unit, so as to realize the consumption power for adjusting the phase-change thermal storage heating unit.
2. a kind of energy Real-time Balancing control system based on phase-change thermal storage according to claim 1, it is characterized in that：It is described
New energy microgrid includes generation of electricity by new energy, conventional power generation usage unit, power load.
3. a kind of energy Real-time Balancing control system based on phase-change thermal storage according to claim 1, it is characterized in that：It is described
High pressure Power Regulation unit includes the controller being connected with balancing the load control unit and the IGCT being connected with controller；The control
Device receives the IGBT group angle information that balancing the load control unit is sent, so as to change the output voltage of IGCT.
4. a kind of energy Real-time Balancing control system based on phase-change thermal storage according to claim 1, it is characterized in that：It is described
Phase-change thermal storage heating unit includes electric heater, heat storage box, heat exchanger, and thermal energy storage is in heat storage box caused by the electric heater
In, heat storage box is connected with heat exchanger, by pipeline the heat energy stored in heat storage box is conveyed in heat exchanger with hot client or
Heat exchanger is connected with the heating boiler of conventional power generation usage unit, hot water in heat exchanger is supplied to the heating kettle of conventional power generation usage unit
Stove, realize that heat accumulation-power generation cycle recycles.
5. a kind of energy Real-time Balancing control system based on phase-change thermal storage according to claim 4, it is characterized in that：It is described
Heat storage box is made up of phase-change material.
6. a kind of energy Real-time Balancing control system based on phase-change thermal storage according to claim 1, it is characterized in that：It is described
Computer processing unit, for the monitoring of complete pairing energy Real-time Balancing control system, show energy Real-time Balancing control system
Real time information, query history record, data storage, autoreport.
7. a kind of energy Real-time Balancing control method based on phase-change thermal storage, it is characterized in that：Including step：
1) balancing the load control unit judges new energy microgrid by step-up transformer low voltage side circuit breaker position and current information
It is incorporated into the power networks with main power network or new energy microgrid departs from main power network isolated power grid；
2) when new energy microgrid and main power network are incorporated into the power networks, balancing the load control unit calculates quick regulation power P in real time1：
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Wherein, m is generating equipment quantity, and n is power load quantity, i=1-m, j=1-n；PGiFor new energy microgrid generating equipment
I power output instantaneous value, PLjFor power load j power instantaneous value, PePower is exchanged for new energy microgrid with main power network to set
Definite value；
Current quick regulation power P1With a preceding quick regulation power P1Difference take absolute value△P1For：
△P1=| P1(k)–P1(k–1)| (2)
When△P1When ＞ acts threshold setting value, balancing the load control unit goes to step the consumption work(3) completed to phase-change heat accumulation unit
Rate quick regulation, k are positive integer；
2) when new energy microgrid departs from main power network isolated power grid, balancing the load control unit calculates quick regulation power P in real time1
Power P is adjusted with additional2；
Quick regulation power P is calculated in real time1It is calculated according to formula (1)；
When△P1When ＞ acts threshold setting value, balancing the load control unit goes to step the consumption work(3) completed to phase-change heat accumulation unit
Rate quick regulation；
Additional regulation power P2Computational methods be：
According to system frequency and the relational expression of system power：
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<mo>-</mo>
<mo>-</mo>
<mo>-</mo>
<mrow>
<mo>(</mo>
<mn>3</mn>
<mo>)</mo>
</mrow>
</mrow>
Obtain：
Wherein, f is new energy microgrid frequency instantaneous value, PLPower instantaneous value, f are consumed for phase-change thermal storage heating unit0For frequency volume
Definite value, M are coefficient of frequency modulation；
Current additional regulation power P2With preceding once additional regulation power P2Difference take absolute value△P2For：
△P2=| P2(k)–P2(k–1)| (5)
When△P2When ＞ acts threshold setting value, balancing the load control unit goes to step 4) delay and completes to disappear to phase-change heat accumulation unit
Wasted work rate adds regulation；
3) when△P1When ＞ acts threshold setting value, balancing the load control unit is according to P1Value calculate the high pressure Power Regulation unit
Output voltage, so as to realize the consumption power of phase-change thermal storage heating unit described in quick regulation；
4) when△P2When ＞ acts threshold setting value, balancing the load control unit is according to P2Value calculate the high pressure Power Regulation unit
Output voltage, so as to realize the additional consumption power for adjusting the phase-change thermal storage heating unit.
8. a kind of energy Real-time Balancing control method based on phase-change thermal storage according to claim 7, it is characterized in that：It is described
The consumption power control period of quick regulation phase-change thermal storage heating unit is less than 20ms.
9. a kind of energy Real-time Balancing control method based on phase-change thermal storage according to claim 7, it is characterized in that：It is described
The consumption power control period of additional regulation phase-change thermal storage heating unit is set in balancing the load control unit, and its cycle is less than
100ms。
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782602A (en) * | 2019-02-02 | 2019-05-21 | 中国科学院过程工程研究所 | A kind of intelligent dynamically optimized method of phase-change heat accumulation system operation |
| CN113051708A (en) * | 2021-02-03 | 2021-06-29 | 安徽大学 | Method for establishing electric kiln electric energy quality characteristic analysis model based on energy balance |
| CN116632858A (en) * | 2023-06-07 | 2023-08-22 | 南京国电南自电网自动化有限公司 | Self-provided power grid power control method based on electronic load |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633644A (en) * | 2013-11-19 | 2014-03-12 | 日照钢铁有限公司 | Power grid impact load automatic balancing device and balancing method |
| CN105071405A (en) * | 2015-08-26 | 2015-11-18 | 电子科技大学 | Microgrid system with asymmetric non-linear load and power balancing control method |
| CN105244917A (en) * | 2015-11-04 | 2016-01-13 | 江西宝象科技有限公司 | Microgrid system having function of balancing energy and load |
| CN105552962A (en) * | 2016-02-01 | 2016-05-04 | 易事特集团股份有限公司 | Micro-grid system and control method therefor |
| CN105896613A (en) * | 2016-05-25 | 2016-08-24 | 重庆大学 | Microgrid distributed finite time control method based on communication lag |
-
2017
- 2017-11-06 CN CN201711078678.1A patent/CN107785932B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103633644A (en) * | 2013-11-19 | 2014-03-12 | 日照钢铁有限公司 | Power grid impact load automatic balancing device and balancing method |
| CN105071405A (en) * | 2015-08-26 | 2015-11-18 | 电子科技大学 | Microgrid system with asymmetric non-linear load and power balancing control method |
| CN105244917A (en) * | 2015-11-04 | 2016-01-13 | 江西宝象科技有限公司 | Microgrid system having function of balancing energy and load |
| CN105552962A (en) * | 2016-02-01 | 2016-05-04 | 易事特集团股份有限公司 | Micro-grid system and control method therefor |
| CN105896613A (en) * | 2016-05-25 | 2016-08-24 | 重庆大学 | Microgrid distributed finite time control method based on communication lag |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109782602A (en) * | 2019-02-02 | 2019-05-21 | 中国科学院过程工程研究所 | A kind of intelligent dynamically optimized method of phase-change heat accumulation system operation |
| CN113051708A (en) * | 2021-02-03 | 2021-06-29 | 安徽大学 | Method for establishing electric kiln electric energy quality characteristic analysis model based on energy balance |
| CN113051708B (en) * | 2021-02-03 | 2022-10-25 | 安徽大学 | Method for establishing electric kiln electric energy quality characteristic analysis model based on energy balance |
| CN116632858A (en) * | 2023-06-07 | 2023-08-22 | 南京国电南自电网自动化有限公司 | Self-provided power grid power control method based on electronic load |
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