CN109412159A - Transformer load rate controls device and method - Google Patents
Transformer load rate controls device and method Download PDFInfo
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- CN109412159A CN109412159A CN201811501712.6A CN201811501712A CN109412159A CN 109412159 A CN109412159 A CN 109412159A CN 201811501712 A CN201811501712 A CN 201811501712A CN 109412159 A CN109412159 A CN 109412159A
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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
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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
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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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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Abstract
The present embodiments relate to technical field of power systems, control device and method in particular to a kind of transformer load rate.The equipment includes centralized control system and multiple energy-storage systems, each energy-storage system is installed on the low-pressure line-outgoing side of corresponding transformer, each energy-storage system and centralized control system communicate to connect, centralized control system is used to obtain the real-time total load rate and maximum load rate of user side, real-time total load rate and maximum load rate are compared to obtain comparison result, it is instructed according to comparison result generation charge and discharge and is sent to each energy-storage system, each energy-storage system is for receiving charge and discharge instruction, it is instructed according to charge and discharge and carries out charge and discharge, to realize the adjustment to the real time load rate of the corresponding transformer of each energy-storage system, centralized control system is used to obtain the real-time remaining capacity of each energy-storage system, corresponding energy-storage system, which is controlled, according to the variation of real-time remaining capacity stops charge and discharge, so, it can be realized the efficient control to the load factor of transformer.
Description
Technical field
The present embodiments relate to technical field of power systems, set in particular to a kind of control of transformer load rate
Standby and method.
Background technique
With quickling increase for the loads such as distributed photovoltaic and the power generation of electric car fluctuation, the electricity consumption of power system customer side
Load fluctuation amplitude and frequency are gradually increased, and bring biggish challenge to the traffic control of power distribution network.For this purpose, tune can be passed through
It saves the load factor of each transformer of user side and then realizes to the traffic control of power distribution network, but existing transformer is born
The most inefficiency of the method that load rate is adjusted.
Summary of the invention
In view of this, the present invention provides a kind of transformer load rates to control device and method, can be realized to transformer
The efficient control of load factor.
The embodiment of the invention provides a kind of transformer load rates to control equipment, including a centralized control system and multiple storages
Energy system, each energy-storage system are installed on the low-pressure line-outgoing side of corresponding transformer, each energy-storage system and the concentration
Control system communication connection；
The centralized control system is for calculating the real time load rate for obtaining each transformer, by each transformer
Load factor is added to obtain the real-time total load rate of user side；Power load curve and the power purchase power for obtaining the user side are bent
Line calculates the maximum load rate for obtaining the user side according to the power load curve and the power purchase power curve；
The centralized control system is used to be compared the real-time total load rate and the maximum load rate to obtain
Comparison result, generates charge and discharge instruction according to the comparison result, and charge and discharge instruction is sent to each energy-storage system；
Each energy-storage system instructs progress charge and discharge for receiving the charge and discharge instruction, according to the charge and discharge, with
Realize the adjustment of the real time load rate to the corresponding transformer of each energy-storage system；
For each energy-storage system, the centralized control system is used to obtain the real-time remaining capacity of the energy-storage system, sentences
Whether the real-time remaining capacity that breaks reaches setting value, if the real-time remaining capacity reaches setting value, controls the energy-storage system
Stop charge and discharge.
Optionally, the centralized control system obtains comparison result in the following manner, is generated according to the comparison result
Charge and discharge instruction:
Judge whether the real-time total load rate is less than the maximum load rate,
If the real-time total load rate is less than the maximum load rate, charging instruction is generated, the charging instruction is sent
To each energy-storage system, wherein the charging instruction is used to increase the real-time negative of the corresponding transformer of each energy-storage system
Load rate；
If the real-time total load rate is not less than the maximum load rate, electric discharge instruction is generated, the electric discharge is instructed and is sent out
It send to each energy-storage system, wherein the electric discharge instruction is for reducing the real-time of the corresponding transformer of each energy-storage system
Load factor.
Optionally, the centralized control system generates charging instruction in the following manner:
For each energy-storage system, maximum power load P is obtained according to the power load curveMAX, according to the electricity consumption
Load curve and the power purchase power curve, which calculate, obtains maximum demand PIt needs, by the maximum power load PMAXWith the maximum
Requirement PIt needsSubtract each other to obtain the energy storage power P of the energy-storage systemstorage-i；
It obtains the energy-storage system and needs reduction plans amount and continuous tune within the setting period of the power load curve
Institute's electricity demand is saved, according to the reduction plans amount and the energy storage appearance for continuously adjusting required electricity and calculating the acquisition energy-storage system
Measure Qi；
According to the energy storage power Pstorage-iWith the stored energy capacitance QiGeneration contains the corresponding charging of the energy-storage system
Power Pc-iCharging instruction, wherein the corresponding charge power P of the energy-storage systemc-iAre as follows:
Pc-i=Pstorage-i。
Optionally, the centralized control system generates electric discharge instruction in the following manner:
The load power P for needing to cut down is calculated according to the power load curve and the power purchase power curveIt puts, in conjunction with
The energy storage power Pstorage-iWith the stored energy capacitance QiGeneration contains the corresponding discharge power P of the energy-storage systemdic-iPut
Electricity instruction, wherein the corresponding discharge power P of the energy-storage systemdic-iAre as follows:
Optionally, the centralized control system obtains the real-time remaining capacity of the energy-storage system, judges the real-time residue
Whether electricity reaches setting value, if the real-time remaining capacity reaches setting value, controls the energy-storage system and stops charge and discharge, specifically
Include:
If the energy-storage system is in charged state, judge whether the real-time remaining capacity is greater than the first setting value, if greatly
In, control the energy-storage system stop charging, wherein first setting value be 95%Qi；
If the energy-storage system is in discharge condition, the real-time remaining capacity is judged whether less than the second setting value, if small
In, control the energy-storage system stop electric discharge, wherein second setting value be 5%Qi。
The embodiment of the invention also provides a kind of transformer load rate control methods, are applied to above-mentioned centralized control system,
The described method includes:
Each real time load rate is added to obtain the real-time total negative of user side by the real time load rate for obtaining each transformer
Load rate obtains the power load curve and power purchase power curve of the user side, according to the power load curve and the purchase
Electric power curves calculate the maximum load rate for obtaining the user side；
Judge whether the real-time total load rate is less than the maximum load rate；
If the real-time total load rate efficiency is less than the maximum load rate, generate for increasing each energy-storage system pair
The charging instruction is sent to each energy-storage system by the charging instruction of the real time load rate for the transformer answered；If described total in real time
Load factor is not less than the maximum load rate, generates the real time load rate for reducing the corresponding transformer of each energy-storage system
Electric discharge instruction, by the electric discharge instruct be sent to each energy-storage system.
Optionally, the centralized control system generates the step of charging instruction, comprising:
For each energy-storage system, maximum power load P is obtained according to the power load curveMAX, according to the electricity consumption
Load curve and the power purchase power curve, which calculate, obtains maximum demand PIt needs, by the maximum power load PMAXWith the maximum
Requirement PIt needsSubtract each other to obtain the energy storage power P of the energy-storage systemstorage-i；
It obtains the energy-storage system and needs reduction plans amount and continuous tune within the setting period of the power load curve
Institute's electricity demand is saved, according to the reduction plans amount and the energy storage appearance for continuously adjusting required electricity and calculating the acquisition energy-storage system
Measure Qi；
According to the energy storage power Pstorage-iWith the stored energy capacitance QiGeneration contains the corresponding charging of the energy-storage system
Power Pc-iCharging instruction, wherein the corresponding charge power P of the energy-storage systemc-iAre as follows:
Pc-i=Pstorage-i。
Optionally, the centralized control system generates the step of electric discharge instruction, comprising:
The load power P for needing to cut down is calculated according to the power load curve and the power purchase power curveIt puts, in conjunction with
The energy storage power Pstorage-iWith the stored energy capacitance QiGeneration contains the corresponding discharge power P of the energy-storage systemdic-iPut
Electricity instruction, wherein the corresponding discharge power P of the energy-storage systemdic-iAre as follows:
Optionally, the method also includes:
For each energy-storage system, if the energy-storage system is in charged state, judge whether the real-time remaining capacity is big
In the first setting value, if more than controlling the energy-storage system and stopping charging, wherein first setting value is 95%Qi；If should
Energy-storage system is in discharge condition, judges that the real-time remaining capacity whether less than the second setting value, if being less than, controls the energy storage
System stops electric discharge, wherein second setting value is 5%Qi。
Optionally, the centralized control system is also communicated to connect with a dispatching of power netwoks room, the method also includes:
Receive the demand corresponding signal that the dispatching of power netwoks room is sent；
For each energy-storage system, response charging function corresponding with the energy-storage system is converted by the demand response signal
Rate and response discharge power generate the response charging instruction for containing the response charge power and contain the response and put
The response of electrical power, which is discharged, to be instructed；
The response charge power or the response discharge power are sent to the energy-storage system, to realize to the energy storage system
Unite corresponding transformer real time load rate adjustment.
Transformer load rate provided in an embodiment of the present invention controls device and method, by the basis of existing power distribution network
Energy-storage system is added, and energy-storage system is controlled according to the real-time total load rate and maximum load rate of user side and carries out charge and discharge, energy
Enough adjustment realized to the real time load rate of transformer are adjusted compared to existing by managing the state of user power utilization equipment
The technology of the real time load rate of transformer, transformer load rate control device and method can be realized the load factor to transformer
Efficient adjustment.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is a kind of industry and commerce terminal block topological diagram provided by the embodiment of the present invention.
Fig. 2 is a kind of module frame chart of transformer load rate control equipment provided by the embodiment of the present invention.
Fig. 3 is a kind of flow chart of transformer load rate control method provided by the embodiment of the present invention.
Fig. 4 is a kind of power load curve graph provided by the embodiment of the present invention.
Fig. 5 is a kind of flow chart that control energy-storage system charges provided by the embodiment of the present invention.
Fig. 6 is a kind of flow chart that control energy-storage system discharges provided by the embodiment of the present invention.
Icon:
100- transformer load rate controls equipment；
1- centralized control system；
2- energy-storage system；21- energy accumulation current converter；22- battery；
3- transformer；
4- dispatching of power netwoks room.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment only
It is a part of the embodiments of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings
The component of embodiment can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention unless specifically defined or limited otherwise, term " setting ", " connected ", " connection " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The connection in portion.For the ordinary skill in the art, the tool of above-mentioned term in the present invention can be understood with concrete condition
Body meaning.
Inventor further investigation reveals that, the most higher cost of the technology that the load factor of transformer is controlled and adjusted at present
And inefficiency passes through management user power utilization equipment for example, the prior art is that electricity consumption behavior to user is managed mostly
State adjust the load factor of transformer, this method higher cost, and inefficiency, the comfort of user can be sacrificed,
The production efficiency decline that will lead to part industry, especially for large-scale industry and commerce user, using the state of management electrical equipment
It is too low come the mode feasibility that adjusts the load factor of transformer.
Defect present in the above scheme in the prior art, is that inventor is obtaining after practicing and carefully studying
As a result, therefore, the solution that the discovery procedure of the above problem and the hereinafter embodiment of the present invention are proposed regarding to the issue above
Scheme all should be the contribution that inventor makes the present invention in process of the present invention.
Based on the studies above, the embodiment of the invention provides a kind of transformer load rates to control device and method, Neng Goushi
Now to the efficient control of transformer load rate.
Fig. 1 shows a kind of industry and commerce terminal block topological diagram, it will be understood that the present embodiment is mainly used in large-scale industry and commerce
Industry user has figure as it can be seen that industry and commerce user adjusts mostly equipped with more transformers 3 to the load factor to transformer 3
Section, existing way is that the state of the equipment of industry and commerce user is adjusted, and this mode can seriously affect industry and commerce user
Production efficiency, for this purpose, the present embodiment adds an energy-storage system 2 in the low-pressure line-outgoing side of each transformer 3, by controlling energy storage
The charge and discharge of system 2 realize that efficiency is higher, and in the long term, cost is relatively low to the adjustment of the load factor of transformer 3.
Further, energy-storage system 2 also needs to be cooperated with a centralized control system, can realize above-mentioned function.Please
Referring to Fig.2, the module frame chart of equipment 100 is controlled for a kind of transformer load rate provided by the embodiment of the present invention, as seen from the figure,
It includes centralized control system 1 and multiple energy-storage systems 2 that the transformer load rate, which controls equipment 100, wherein each energy-storage system 2 is pacified
Low-pressure line-outgoing side loaded on corresponding transformer 3, each energy-storage system 2 are communicated to connect with centralized control system 1, wherein communication link
The mode of connecing can be wired or wireless.Further, centralized control system 1 is also communicated to connect with a dispatching of power netwoks room 4.
In the present embodiment, energy-storage system 2 is electrochemical energy storage system, including but not limited to plumbic acid, lead charcoal, sodium sulphur, liquid
A variety of electrochemical cell stored energy forms such as stream, lithium ion, please continue to refer to Fig. 2, energy-storage system 2 includes energy accumulation current converter 21 and electricity
Pond 22, energy accumulation current converter 21 and battery 22 communicate to connect, and energy accumulation current converter 21 can receive the charge and discharge of the transmission of centralized control system 1
Electricity instruction instructs control battery 22 to carry out charge and discharge according to charge and discharge.
It on this basis, should as shown in figure 3, the embodiment of the invention also provides a kind of transformer load rate control method
Method is applied to above-mentioned centralized control system 1, and detailed process shown in Fig. 3 will be described in detail below:
Step S21 obtains the real time load rate of each transformer, and each real time load rate is added to obtain the real-time of user side
Total load rate obtains the power load curve and power purchase power curve of user side, bent according to power load curve and power purchase power
The maximum load rate of line computation acquisition user side.
For example, centralized control system 1 can be with the realtime power of multiple intelligent electric meters of monitoring user-side, according to multiple real-time
The real time load rate L of each transformer 3 of power calculationRi, by each real time load rate LRiIt is added to obtain the real-time total of user side
Load factor LR=∑ LRi。
Further, centralized control system 1 obtains the power load curve and power purchase power curve of user side, according to electricity consumption
Load curve and power purchase power curve calculate the maximum load rate L for obtaining user sideRMAX, wherein power load curve such as Fig. 4 institute
Show, wherein abscissa indicates time, unit h, and ordinate indicates power load, unit kW.
Step S22, judges whether real-time total load rate is less than maximum load rate.
It is appreciated that centralized control system 1 judges whether real-time total load rate is less than maximum load rate, then basis is sentenced
Disconnected result generates charging instruction or electric discharge instruction.
Specifically, if real-time total load rate LRLess than maximum load rate LRMAX, turn to step S23；If real-time total load rate LR
Not less than maximum load rate LRMAX, turn to step S24.
Step S23 generates the charging instruction for increasing the real time load rate of the corresponding transformer of each energy-storage system, will fill
Electricity instruction is sent to each energy-storage system.
If being appreciated that total load rate L in real timeRLess than maximum load rate LRMAX, centralized control system 1 can generate charging and refer to
It enables, and controls each energy-storage system 2 and charge, please refer to Fig. 5, be to control energy storage system provided by the embodiment of the present invention
The flow chart that system charges, specific as follows:
Step S231 obtains maximum power load according to power load curve for each energy-storage system, negative according to electricity consumption
Lotus curve and power purchase power curve, which calculate, obtains maximum demand, maximum power load and maximum demand is subtracted each other to obtain the energy storage
The energy storage power of system.
The maximum power load P of acquisitionMAXAs shown in figure 3, further, maximum demand PIt needs, then energy storage power are as follows:
Pstorage-i=PMAX-PIt needs。
Step S232 obtains the energy-storage system and needs reduction plans amount and company within the setting period of power load curve
It is continuous to adjust institute's electricity demand, according to reduction plans amount and the stored energy capacitance for continuously adjusting the required electricity calculating acquisition energy-storage system.
In the present embodiment, stored energy capacitance can be Qi, wherein QiIt can acquire in the following manner:
Wherein, t1And t2For the beginning and end for setting the period, wherein t1And t2It can be chosen according to the actual situation, because
This does not illustrate that P is the electric power of user side more herein.
Step S233 contains filling for the corresponding charge power of the energy-storage system according to energy storage power and stored energy capacitance generation
Electricity instruction, is sent to the energy-storage system for charging instruction.
For example, the corresponding charge power P of the energy-storage system 2c-iFor Pstorage-i.It is appreciated that QiFor feedback later
Control.
Step S234, judges whether the real-time remaining capacity of the energy-storage system is greater than the first setting value.
If more than steering step S35 continues control energy-storage system 2 and charge if being not more than.
Wherein, the first setting value is 95%Qi。
Step S235 controls the energy-storage system and stops charging.
It is appreciated that energy accumulation current converter 21 (PCS) is charged according to charging instruction to increase the negative of corresponding transformer 3
Load rate, during the charging process, the real-time remaining capacity (SOC value) of energy-storage system 2 constantly increase, and real-time when energy-storage system 2 remains
Remaining electricity is greater than 95%QiOr when will carry out peak clipping work, centralized control system 1 can control the stopping of energy accumulation current converter 21 and fill
Electricity.
Step S24 generates the electric discharge instruction of the real time load rate for reducing the corresponding transformer of each energy-storage system, will put
Electricity instruction is sent to each energy-storage system.
If being appreciated that total load rate L in real timeRLess than maximum load rate LRMAX, centralized control system 1 can generate electric discharge and refer to
It enables, and controls each energy-storage system 2 and discharge, please refer to Fig. 6, be to control energy storage system provided by the embodiment of the present invention
The flow chart that system discharges, specific as follows:
Step S241 calculates the load power for needing to cut down according to power load curve and power purchase power curve, in conjunction with
Energy storage power and stored energy capacitance, which generate, contains the electric discharge instruction of the corresponding discharge power of the energy-storage system, and electric discharge instruction is sent
To the energy-storage system.
For example, it is desired to which the load power cut down is PIt puts, centralized control system 1 is in conjunction with energy storage power Pstorage-iHold with energy storage
Measure QiGeneration contains the corresponding discharge power P of the energy-storage systemdic-iElectric discharge instruction, discharge power Pdic-i:
Whether step S242 judges the real-time remaining capacity of the energy-storage system less than the second setting value.
If being less than, step S243 is turned to, if being not less than, continues control energy-storage system 2 and discharges.
Wherein, the first setting value is 5%Qi。
Step S243 controls the energy-storage system and stops electric discharge.
It is appreciated that energy accumulation current converter 21 (PCS) is discharged according to electric discharge instruction to reduce the negative of corresponding transformer 3
Load rate, during discharge, the real-time remaining capacity (SOC value) of energy-storage system 2 constantly reduce, and real-time when energy-storage system 2 remains
Remaining electricity is less than 5%QiOr power load, when dropping to safe range, centralized control system 1 can control energy accumulation current converter 21 and stop
Only discharge.
It is appreciated that can be realized the efficient control to the load factor of transformer, the device and method by the above method
It does not need to carry out any operation to user side, it is only necessary to charge and discharge are realized to energy-storage system 2, it is high-efficient and at low cost.
Centralized control system 1 can carry out real-time control to energy-storage system 2, issue the control such as charge and discharge for energy-storage system 2
Instruction, and according to the operating status of energy-storage system 2 (SOC value) Optimal Control Strategy, state can be called by being in energy-storage system 2.
Optionally, centralized control system 1 can also be monitored energy-storage system 2, for example, the BMS of acquisition energy-storage system 2
And PCS data, and according to BMS and PCS data issue complete battery balanced, fault alarm and charge and discharge etc. it is tactful.Further
Ground, centralized control system 1 can also complete the functions such as the visual presentation of data, battery performance analysis, report generation.
Optionally, the transformer load control method is further comprising the steps of:
Centralized control system 1 receives the demand response signal that dispatching of power netwoks room 4 is sent.
For each energy-storage system 2, centralized control system 1 converts demand response signal to corresponding with the energy-storage system 2
Response charge power and response discharge power, generate contain response charge power response charging instruction and contain sound
It answers the response of discharge power to discharge to instruct.
Centralized control system 1 will respond charge power or response discharge power is sent to the energy-storage system 2, to realize to this
The adjustment of the real time load rate of the corresponding transformer 3 of energy-storage system 2.
It is appreciated that can be improved by the interaction between centralized control system 1 and dispatching of power netwoks room 4 to transformer
The flexibility that load factor is adjusted.On the one hand, centralized control system 1 can be according to real-time total load rate and maximum load rate control
Energy-storage system 2 processed carries out charge and discharge, and on the other hand, the demand that centralized control system 1 can also be sent according to dispatching of power netwoks room 4 is rung
Induction signal controls energy-storage system and carries out charge and discharge.Optionally, centralized control system 1, can be right when generating charge and discharge instruction
Real-time total load rate, maximum load rate and demand response signal etc. carry out analysis prediction, and then generate charge and discharge instruction, to adjust
The load factor of transformer participates in the requirement management of large-scale industry and commerce user power utilization.
To sum up, transformer load provided by the embodiment of the present invention controls device and method, can be improved negative to transformer
The efficiency that load rate is adjusted, and then the management of large-scale industry and commerce power demand quantity and the demand response of dispatching of power netwoks room are effectively participated in,
And then reduce the electric cost of large-scale industry and commerce user, moreover it is possible to large-scale industry and commerce user be made to obtain dispatching of power netwoks room demand response
Benefit.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of transformer load rate controls equipment, which is characterized in that including a centralized control system and multiple energy-storage systems, respectively
The energy-storage system is installed on the low-pressure line-outgoing side of corresponding transformer, and each energy-storage system and the centralized control system are logical
Letter connection；
The centralized control system is for calculating the real time load rate for obtaining each transformer, by the load of each transformer
Rate is added to obtain the real-time total load rate of user side；The power load curve and power purchase power curve of the user side are obtained,
The maximum load rate for obtaining the user side is calculated according to the power load curve and the power purchase power curve；
The centralized control system is for being compared the real-time total load rate and the maximum load rate to be compared
As a result, generating charge and discharge instruction according to the comparison result, charge and discharge instruction is sent to each energy-storage system；
Each energy-storage system instructs according to the charge and discharge for receiving the charge and discharge instruction and carries out charge and discharge, to realize
Adjustment to the real time load rate of the corresponding transformer of each energy-storage system；
For each energy-storage system, the centralized control system is used to obtain the real-time remaining capacity of the energy-storage system, judges institute
It states whether real-time remaining capacity reaches setting value, if the real-time remaining capacity reaches setting value, controls energy-storage system stopping
Charge and discharge.
2. transformer load rate according to claim 1 controls equipment, which is characterized in that the centralized control system passes through
Following manner obtains comparison result, generates charge and discharge instruction according to the comparison result:
Judge whether the real-time total load rate is less than the maximum load rate,
If the real-time total load rate is less than the maximum load rate, charging instruction is generated, the charging instruction is sent to respectively
The energy-storage system, wherein the charging instruction is used to increase the real time load rate of the corresponding transformer of each energy-storage system；
If the real-time total load rate is not less than the maximum load rate, electric discharge instruction is generated, electric discharge instruction is sent to
Each energy-storage system, wherein the electric discharge instructs the real time load for reducing the corresponding transformer of each energy-storage system
Rate.
3. transformer load rate according to claim 2 controls equipment, which is characterized in that the centralized control system passes through
Following manner generates charging instruction:
For each energy-storage system, maximum power load P is obtained according to the power load curveMAX, according to the power load
Curve and the power purchase power curve, which calculate, obtains maximum demand PIt needs, by the maximum power load PMAXWith the maximum demand
PIt needsSubtract each other to obtain the energy storage power P of the energy-storage systemstorage-i；
The energy-storage system is obtained to need reduction plans amount and to continuously adjust institute within the setting period of the power load curve
Electricity demand, according to the reduction plans amount and the stored energy capacitance for continuously adjusting required electricity and calculating the acquisition energy-storage system
Qi；
According to the energy storage power Pstorage-iWith the stored energy capacitance QiGeneration contains the corresponding charge power of the energy-storage system
Pc-iCharging instruction, wherein the corresponding charge power P of the energy-storage systemc-iAre as follows:
Pc-i=Pstorage-i。
4. transformer load rate according to claim 3 controls equipment, which is characterized in that the centralized control system passes through
Following manner generates electric discharge instruction:
The load power P for needing to cut down is calculated according to the power load curve and the power purchase power curveIt puts, in conjunction with described
Energy storage power Pstorage-iWith the stored energy capacitance QiGeneration contains the corresponding discharge power P of the energy-storage systemdic-iElectric discharge refer to
It enables, wherein the corresponding discharge power P of the energy-storage systemdic-iAre as follows:
5. transformer load rate according to claim 4 controls equipment, which is characterized in that the centralized control system obtains
The real-time remaining capacity of the energy-storage system, judges whether the real-time remaining capacity reaches setting value, if the real-time remaining electricity
Amount reaches setting value, controls the energy-storage system and stops charge and discharge, specifically includes:
If the energy-storage system is in charged state, judge whether the real-time remaining capacity is greater than the first setting value, if more than control
It makes the energy-storage system and stops charging, wherein first setting value is 95%Qi；
If the energy-storage system is in discharge condition, whether the real-time remaining capacity is judged less than the second setting value, if being less than, is controlled
It makes the energy-storage system and stops electric discharge, wherein second setting value is 5%Qi。
6. a kind of transformer load rate control method, which is characterized in that applied to concentration described in claim 1-5 any one
Control system, which comprises
Each real time load rate is added to obtain the real-time total load of user side by the real time load rate for obtaining each transformer
Rate obtains the power load curve and power purchase power curve of the user side, according to the power load curve and the power purchase
Power curve calculates the maximum load rate for obtaining the user side；
Judge whether the real-time total load rate is less than the maximum load rate；
If the real-time total load rate efficiency is less than the maximum load rate, generate corresponding for increasing each energy-storage system
The charging instruction is sent to each energy-storage system by the charging instruction of the real time load rate of transformer；If the real-time total load
Rate is not less than the maximum load rate, generates putting for the real time load rate for reducing the corresponding transformer of each energy-storage system
Electric discharge instruction is sent to each energy-storage system by electricity instruction.
7. transformer load rate control method according to claim 6, which is characterized in that the centralized control system generates
The step of charging instruction, comprising:
For each energy-storage system, maximum power load P is obtained according to the power load curveMAX, according to the power load
Curve and the power purchase power curve, which calculate, obtains maximum demand PIt needs, by the maximum power load PMAXWith the maximum demand
PIt needsSubtract each other to obtain the energy storage power P of the energy-storage systemstorage-i；
The energy-storage system is obtained to need reduction plans amount and to continuously adjust institute within the setting period of the power load curve
Electricity demand, according to the reduction plans amount and the stored energy capacitance for continuously adjusting required electricity and calculating the acquisition energy-storage system
Qi；
According to the energy storage power Pstorage-iWith the stored energy capacitance QiGeneration contains the corresponding charge power of the energy-storage system
Pc-iCharging instruction, wherein the corresponding charge power P of the energy-storage systemc-iAre as follows:
Pc-i=Pstorage-i。
8. transformer load rate control method according to claim 7, which is characterized in that the centralized control system generates
The step of electric discharge instruction, comprising:
The load power P for needing to cut down is calculated according to the power load curve and the power purchase power curveIt puts, in conjunction with described
Energy storage power Pstorage-iWith the stored energy capacitance QiGeneration contains the corresponding discharge power P of the energy-storage systemdic-iElectric discharge refer to
It enables, wherein the corresponding discharge power P of the energy-storage systemdic-iAre as follows:
9. transformer load rate control method according to claim 8, which is characterized in that the method also includes:
For each energy-storage system, if the energy-storage system is in charged state, judge whether the real-time remaining capacity is greater than
One setting value, if more than controlling the energy-storage system and stopping charging, wherein first setting value is 95%Qi；If the energy storage
System is in discharge condition, judges that the real-time remaining capacity whether less than the second setting value, if being less than, controls the energy-storage system
Stop electric discharge, wherein second setting value is 5%Qi。
10. transformer load rate control method according to claim 6, which is characterized in that the centralized control system is also
It is communicated to connect with a dispatching of power netwoks room, the method also includes:
Receive the demand corresponding signal that the dispatching of power netwoks room is sent；
For each energy-storage system, by the demand response signal be converted into response charge power corresponding with the energy-storage system and
Discharge power is responded, the response charging instruction for containing the response charge power is generated and contains the response electric discharge function
The response of rate, which is discharged, to be instructed；
The response charge power or the response discharge power are sent to the energy-storage system, to realize to the energy-storage system pair
The adjustment of the real time load rate for the transformer answered.
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