CN108683196A - A kind of power system load adjustment control method - Google Patents
A kind of power system load adjustment control method Download PDFInfo
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- CN108683196A CN108683196A CN201810603162.2A CN201810603162A CN108683196A CN 108683196 A CN108683196 A CN 108683196A CN 201810603162 A CN201810603162 A CN 201810603162A CN 108683196 A CN108683196 A CN 108683196A
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- power
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- power system
- control method
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Classifications
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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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
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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
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
-
- 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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a kind of power system load adjustment control methods, include the following steps：A. layering and zoning is carried out first；B. wait for that step a carries out the formulation of criterion again after the completion；C. after the completion of waiting for step b, then main transformer management is carried out；D. after the completion of waiting for step c, then the preparation of device is carried out；E. after the completion of waiting for step d, then the control of system loading is carried out；F. after the completion of waiting for step e, protection is carried out again adjusts setting, by using the voltage curve and its clear minimum voltage limiting value for formulating each voltage backbone point, convenient for the formulation to criterion, it can effectively determine region and the probability of power system load, the power load of electrical equipment is predicted in real time, increase controllability, control by using device to system loading, to realize the adjusting control to the maximum active power of electrical equipment, the stability for ensureing power system load, convenient for promoting the use of.
Description
Technical field
The present invention relates to a kind of power system load technical field, specially a kind of power system load adjusting control side
Method.
Background technology
Load prediction plays the role of the management and running of electric system and the production schedule perspective, accurate load prediction
Play the part of more and more important role in current operation of power networks.Load prediction refers to fully considering one in the power system
When a little important natural conditions, social influence, increase-volume rhymed formula plan, system operating characteristics, using mathematical method to the past or
The load in person's future is handled, and in the case where meeting certain precision, can predict the load value of a certain particular moment.
Currently, existing power system load adjustment control method can coordinate power grid control to use, but actually using
In, till now from power system development, the status of load prediction also experienced from gently to the variation of weight.At 1970 to 1996
In this nearly 30 years short of electricity time, due to the original of technological deficiency and the objective realities such as dynamics for controlling electricity consumption at that time
The accuracy of cause, load prediction is not high.And after 1997, supply-demand relationship has occurred greatly on the electricity market in China
There is negative growth etc. of power supply in variation, some areas, and the electricity consumption in some areas is still in very sluggish state, thus
Instantly, there is urgent need in China for the high-precision of load prediction, secondly in the case that system loading gets muddled,
It can not timely ensure the stability of electric load system, these are all physical presence and urgent problem.
Invention content
The technical problem to be solved by the present invention is to overcome the defects of the prior art, provide a kind of power system load adjusting control
Method processed, by using the voltage curve and its clear minimum voltage limiting value for formulating each voltage backbone point, convenient for criterion
It formulates, can effectively determine region and the probability of power system load, the power load of electrical equipment is predicted in real time,
Controllability is increased, the control by using device to system loading, to realize the tune to the maximum active power of electrical equipment
Section control, ensures the stability of power system load, convenient for promoting the use of.
To solve the above problems, the present invention provides the following technical solutions：A kind of power system load adjustment control method, packet
Include following steps：
A. layering and zoning is carried out first；
B. wait for that step a carries out the formulation of criterion again after the completion；
C. after the completion of waiting for step b, then main transformer management is carried out；
D. after the completion of waiting for step c, then the preparation of device is carried out；
E. after the completion of waiting for step d, then the control of system loading is carried out；
F. it after the completion of waiting for step e, then carries out protection and adjusts setting.
As a kind of preferred embodiment of the present invention, in the step a, the operation control of the power supply and load of reactive power
System, takes the principle of layering and zoning in-situ balancing, is not conveyed between area between different voltages grade power network as far as possible
Reactive power, reactive power source to be equipped with it is necessary spare, more necessary by electric area.
As a kind of preferred embodiment of the present invention, in the step b, formulate each voltage backbone point voltage curve and
Its minimum voltage limiting value is specified, the difference of predicted value and threshold value is obtained, sends out and adjusts power load instruction, set according to difference
The Technique performance parameter value of electrical equipment.
As a kind of preferred embodiment of the present invention, in the step c, main transformer tap switch running position is managed
It sets, is compared predicted value with threshold value using main transformer, and obtain the difference of predicted value and threshold value, it is negative to send out adjusting electricity consumption
Lotus instructs, if predicted value is greater than or equal to threshold value, sends out power load instruction, adjusts the Technique performance parameter of electrical equipment,
If predicted value is less than threshold value, next detection cycle is carried out.
As a kind of preferred embodiment of the present invention, in the step d, device is reactor, phase modifier, generator,
Wherein, reactor is oil immersed type current limiting series reactor；Phase modifier is perhydro cold type 125MVA phase modifiers；Generator is sent out for three-phase
Motor, voltage value are 380v ± 10v, and frequency is 50Hz ± 0.5Hz.
As a kind of preferred embodiment of the present invention, in the step e, working voltage maintains high level to ensure system
Stable and economical operation；Simultaneously using reactor, phase modifier, generator etc., the charging that high-voltage power net is largely had more than needed is absorbed
Reactive power, overtension when preventing low ebb load.
As a kind of preferred embodiment of the present invention, in the step f, in generated output and load situation in a basic balance
Under, to prevent frequency unstability, in electric system except should be equipped with the self-starting of Hydropower Unit low frequency or be sent elsewhere automatically by phase modulation electricity dress
It sets etc. outer, it is necessary to which configuring frequency reduces automatic load-reducing device, and takes off-the-line part of generating units, as spare, still has to arrange
The sequence of excision load manually after frequency is normal, then gradually powers to removed load, while can not notably make frequency
It fluctuates excessive.
Compared with prior art, beneficial effects of the present invention are as follows：
A kind of power system load adjustment control method of the present invention, by using the voltage curve for formulating each voltage backbone point
The region of power system load and several can be effectively determined convenient for formulation to criterion with its clear minimum voltage limiting value
Rate predicts the power load of electrical equipment, increases controllability in real time, the control by using device to system loading
System ensures the stability of power system load to realize to the adjusting control of the maximum active power of electrical equipment, convenient for promoting
It uses.
Specific implementation mode
The present invention provides a kind of technical solution：A kind of power system load adjustment control method, includes the following steps：
A. layering and zoning is carried out first；
B. wait for that step a carries out the formulation of criterion again after the completion；
C. after the completion of waiting for step b, then main transformer management is carried out；
D. after the completion of waiting for step c, then the preparation of device is carried out；
E. after the completion of waiting for step d, then the control of system loading is carried out；
F. it after the completion of waiting for step e, then carries out protection and adjusts setting.
In the step a, the operation of the power supply and load of reactive power controls, and takes the original of layering and zoning in-situ balancing
Then, reactive power is not conveyed between area between different voltages grade power network as far as possible, reactive power source will be equipped with necessity
It is spare, more necessary by electric area.
In the step b, the voltage curve of each voltage backbone point and its clear minimum voltage limiting value are formulated, is predicted
The difference of value and threshold value sends out and adjusts power load instruction, the Technique performance parameter value of electrical equipment is set according to difference.
In the step c, manage main transformer tap switch running position, using main transformer by predicted value and threshold value into
Row compares, and obtains the difference of predicted value and threshold value, sends out and adjusts power load instruction, if predicted value is greater than or equal to threshold value,
Power load instruction is then sent out, the Technique performance parameter of electrical equipment is adjusted, if predicted value is less than threshold value, carries out next inspection
Survey the period.
In the step d, device is reactor, phase modifier, generator, wherein reactor is oil immersed type current limiting series electricity
Anti- device；Phase modifier is perhydro cold type 125MVA phase modifiers；Generator is threephase generator, and voltage value is 380v ± 10v, and frequency is
50Hz±0.5Hz。
In the step e, working voltage maintains high level to ensure system stabilization and economical operation；Reactance is utilized simultaneously
Device, phase modifier, generator etc. absorb the charging reactive power largely had more than needed of high-voltage power net, voltage when preventing low ebb load
It is excessively high.
It is in a basic balance with load in generated output in the step f, to prevent frequency unstability, in electric system
In addition to device that the self-starting of Hydropower Unit low frequency should be housed or send electricity elsewhere automatically by phase modulation etc., it is necessary to configure frequency reduction and subtract automatically
Load device, and take off-the-line part of generating units still has to arrange the sequence for cutting off load manually, waits for that frequency is normal as spare
Afterwards, then gradually it powers to removed load, while notably frequency fluctuation can not be made excessive.
It is bent by using the voltage for formulating each voltage backbone point first in a kind of power system load adjustment control method
Line and its clear minimum voltage limiting value, convenient for formulation to criterion, can effectively determine the region of power system load with
Probability predicts the power load of electrical equipment, increases controllability in real time, secondly by use device to system loading
Control ensure the stability of power system load to realize to the adjusting control of the maximum active power of electrical equipment, be convenient for
It promotes the use of.
Now a kind of made power system load adjustment control method often uses control method with certain market through the invention
Experimental Comparison is carried out, experiment process is as follows；
1, to power system load adjustment control method and conventional method in the case where criterion is formulated, predicted time is carried out
Calculating ratio pair.
2, load is manually established in the case where criterion is formulated to power system load adjustment control method and conventional method
Point calculates separately out detection quantity to carry out analog detection to it.
3, in the case where there is load condition, cooperation reactor, phase modifier, generator carry out power system load situation
After processing, it is compared with existing processing time.
Test data is as follows：
| Predicted time/H | Accuracy rate/% | Control time/H | |
| Embodiment 1 | 2.4 | 54 | 3.8 |
| Reinspection | 2.6 | 58 | 3.4 |
| Comparative example 1 | 1.2 | 82 | 2.1 |
Through Experimental comparison, a kind of power system load adjustment control method made by the present invention has prediction quickly, accurate
True rate is high, in the case of system loading disorder, convenient for the effect quickly controlled.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention, for this field skill
For art personnel, it is clear that invention is not limited to the details of the above exemplary embodiments, and without departing substantially from the present invention spirit or
In the case of essential characteristic, the present invention can be realized in other specific forms.Therefore, in all respects, should all incite somebody to action
Embodiment regards exemplary as, and is non-limiting, the scope of the present invention by appended claims rather than on state
Bright restriction, it is intended that including all changes that come within the meaning and range of equivalency of the claims in the present invention
It is interior.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to aforementioned reality
Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features.All essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (7)
1. a kind of power system load adjustment control method, it is characterised in that：Include the following steps：
A. layering and zoning is carried out first；
B. wait for that step a carries out the formulation of criterion again after the completion；
C. after the completion of waiting for step b, then main transformer management is carried out；
D. after the completion of waiting for step c, then the preparation of device is carried out；
E. after the completion of waiting for step d, then the control of system loading is carried out；
F. it after the completion of waiting for step e, then carries out protection and adjusts setting.
2. a kind of power system load adjustment control method according to claim 1, it is characterised in that：In the step a,
The operation of the power supply and load of reactive power controls, and the principle of layering and zoning in-situ balancing is taken, as far as possible not in different voltages
Convey reactive power between grade power network between area, reactive power source to be equipped with it is necessary spare, by electric area more
It is necessary.
3. a kind of power system load adjustment control method according to claim 1, it is characterised in that：In the step b,
The voltage curve of each voltage backbone point and its clear minimum voltage limiting value are formulated, the difference of predicted value and threshold value is obtained, sends out
Power load instruction is adjusted, the Technique performance parameter value of electrical equipment is set according to difference.
4. a kind of power system load adjustment control method according to claim 1, it is characterised in that：In the step c,
Main transformer tap switch running position is managed, is compared predicted value with threshold value using main transformer, and obtain predicted value
It with the difference of threshold value, sends out and adjusts power load instruction, if predicted value is greater than or equal to threshold value, send out power load instruction,
The Technique performance parameter of electrical equipment is adjusted, if predicted value is less than threshold value, carries out next detection cycle.
5. a kind of power system load adjustment control method according to claim 1, it is characterised in that：In the step d,
Device is reactor, phase modifier, generator, wherein reactor is oil immersed type current limiting series reactor；Phase modifier is perhydro cold type
125MVA phase modifiers；Generator is threephase generator, and voltage value is 380v ± 10v, and frequency is 50Hz ± 0.5Hz.
6. a kind of power system load adjustment control method according to claim 1, it is characterised in that：In the step e,
Working voltage maintains high level to ensure system stabilization and economical operation；Simultaneously using reactor, phase modifier, generator etc., inhale
The charging reactive power largely had more than needed of high-voltage power net is received, overtension when preventing low ebb load.
7. a kind of power system load adjustment control method according to claim 1, it is characterised in that：In the step f,
In a basic balance with load in generated output, Hydropower Unit low frequency should be equipped with by being removed to prevent frequency unstability, in electric system
Self-starting or the device etc. for sending electricity elsewhere automatically by phase modulation are outer, it is necessary to which configuring frequency reduces automatic load-reducing device, and takes off-the-line
Part of generating units still has to arrange the sequence for cutting off load manually, after frequency is normal, then gradually to removed as spare
Load is powered, while notably frequency fluctuation can not be made excessive.
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| CN201810603162.2A CN108683196A (en) | 2018-06-12 | 2018-06-12 | A kind of power system load adjustment control method |
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| CN201810603162.2A CN108683196A (en) | 2018-06-12 | 2018-06-12 | A kind of power system load adjustment control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110233480A (en) * | 2019-06-14 | 2019-09-13 | 国网山东省电力公司平阴县供电公司 | A kind of load control method and system for electric system |
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| CN110233480A (en) * | 2019-06-14 | 2019-09-13 | 国网山东省电力公司平阴县供电公司 | A kind of load control method and system for electric system |
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