CN113746086A - Non-invasive demand response system and method - Google Patents
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
Abstract
The invention discloses a non-invasive demand response system and a non-invasive demand response method, wherein the system comprises a user control end, a master control end and a data acquisition and receiving end, wherein the user control end is used for realizing data acquisition of a user end and receiving signals of the master control end for responding; and the communication module is used for realizing information interaction between the master control ends of the user ends and is respectively connected with the user control end and the master control end. And the master control end is used for monitoring the power load condition and realizing load regulation and control. According to the technical scheme, the user household total ammeter is monitored through data, so that the judgment of the household electricity utilization condition of the user is realized by combining the total electricity consumption according to the ascending and descending change of the transient current value in the power parameter curve, timely and accurate demand response is carried out, the power supply capacity judgment is carried out by combining the historical power grid load curve, the monitoring of the electricity utilization details of the user is met, and the timely demand response is realized.
Description
Technical Field
The invention relates to the technical field of demand response, in particular to a non-invasive demand response system and a non-invasive demand response method.
Background
The time for developing demand response in China is short, and the comprehensive research and practice on demand response are not enough. At present, the implementation demand response project of China is mainly a demand, and the application scene is single; the regulated demand response resources are only of specific electric appliance types such as air conditioners and the like, are single, the peak load is reduced in summer, the business requirements such as new energy local consumption and rapid emergency response are not considered, the research on the interactive application technology of the large-scale demand response resources is lacked, and the demand response potential is not fully exerted; the demand response is mainly designed into a standard information interaction model through pilot points and demonstration, a company system demand response service unified platform is built, unified management and unified allocation of demand response resources are achieved, and multi-scenario service requirements of companies for new energy consumption, quick response, differentiated value-added service and the like are met.
Chinese patent document CN106786542A discloses a "demand response system". The system adopts a demand response master station, a demand response interactive service terminal and a demand response execution unit which are communicated with each other; the cloud computing platform is fully utilized to combine the power grid enterprise data and the power consumer demand response data information resources, demand response interactive service is provided for power grid enterprises and power consumers, load management workload of the power grid enterprises is reduced, and power grid power supply reliability and flexibility are improved. The technical scheme is difficult to meet the requirement for monitoring the power consumption details of the user and realizes timely demand response.
Disclosure of Invention
The invention mainly solves the technical problems that the monitoring of the power consumption details of the user and the timely demand response are difficult to meet by the original technical scheme, and provides a non-invasive demand response system and a non-invasive demand response method.
The technical problem of the invention is mainly solved by the following technical scheme:
a non-intrusive demand response system, comprising:
the user control end is used for realizing data acquisition of the user end and receiving a signal of the master control end for responding;
and the communication module is used for realizing information interaction between the master control ends of the user ends and is respectively connected with the user control end and the master control end.
And the master control end is used for monitoring the power load condition and realizing load regulation and control.
Preferably, the user control end comprises an acquisition module, a carrier circuit breaker and a carrier concentrator, the acquisition module is connected with the output end of the household general electric meter, the carrier circuit breaker is connected with the input end of the household general electric meter, and the carrier concentrator is connected with the communication module. The acquisition module is used for acquiring the power data of a user side, the carrier circuit breaker is used for realizing information interaction with the master control end and controlling circuit breaking, and the carrier concentrator is used for collecting signals of the carrier circuit breaker and converting the signals.
Preferably, the communication module comprises a zero-crossing detection circuit, a signal sending circuit, a signal coupling circuit, a signal receiving filter circuit and a zero-crossing synchronization circuit which are connected in sequence, wherein an input control end of the signal coupling circuit is connected with a user control end, and an input end of the zero-crossing detection circuit and an output end of the zero-crossing synchronization circuit are connected with the carrier signal. The carrier wave judges sampling time through a zero-crossing detection circuit, and signals to be transmitted are sent through a signal sending circuit and are coupled to an electric wire through a signal coupling circuit for transmission; the information transmitted on the wire is also transmitted to the signal receiving filter circuit and the zero-crossing synchronization circuit through the signal coupling circuit, so that the information is transmitted in two directions, and the carrier sampling has the characteristic of stability.
Preferably, the master control end comprises a power control center for monitoring the power load condition and pushing information, the power control center is connected with the monitoring management cloud platform, and the master control end further comprises a handheld control terminal respectively connected with the power control center and the monitoring management cloud platform. The electric control center is used for monitoring electric load conditions, pushing information and issuing instructions, the monitoring management cloud platform is used for storing data to a cloud end, optimization is facilitated, and the handheld control terminal is used for remote monitoring and issuing instructions.
A working method of a non-invasive demand response system comprises the following steps:
the S1 acquisition module acquires the user power parameters and the user load curve and transmits the user power parameters and the user load curve to the master control end;
s2, the power control center judges the real-time power utilization status of the user in a non-invasive manner;
s3, the power control center performs compensation judgment by combining the historical power grid load curve and the user load curve;
and S4, realizing demand response regulation and control through a carrier breaker.
Preferably, the step S2 of non-invasively determining the real-time power utilization status of the user specifically includes: s2.1, monitoring electric power parameters and fitting an electric power parameter curve through an electric meter arranged at the general input end of a user;
s2.2, extracting a transient current value in the power parameter curve and judging;
s2.3, if the transient current value exceeds a threshold value, extracting the power parameter change at the transient moment to construct a positive transient point and a negative transient point;
s2.4, connecting the transient points to form a power parameter change line graph;
and S2.5, matching the positive transient point and the negative transient point before the moment before scheduling to realize the judgment of the electric appliance operated by the user.
Preferably, in the step S2.2, if the instantaneous change amount of the current in the power parameter curve exceeds the set threshold Δ I, the current is determined as a non-current fluctuation change value, the instantaneous change amount of the power is calculated according to the current and voltage data at that moment, and the on/off of the electric appliances in the home of the user is determined according to the representation of the instantaneous change amount of the power in the total load.
Preferably, in step S2.3, the current change point at the power instantaneous increase time is set as a positive transient point, the current change point at the power instantaneous decrease time is set as a negative transient point, the positive transient point and the negative transient point before the power instantaneous decrease time are matched before scheduling, and if the power instantaneous increase amount of the positive transient point is close to the power instantaneous decrease amount of the negative transient point, it is determined that the same appliance is turned off, and it is determined that the appliance is not turned off if only the positive transient point exists.
Preferably, the step S3 of performing compensation determination by combining the grid load curve and the user load curve specifically includes:
s3.1, carrying out normalization processing on the historical power grid load curve and the low-voltage user load curve;
s3.2, performing compensation judgment at the same moment in the historical power grid load curve;
and S3.3, if the idle load exists in the historical power grid load curve at the same moment, compensating the user, and if the idle load does not exist, judging that the compensation cannot be performed and informing the user.
Preferably, the step S4 determines that the power control center issues an instruction after completion, the instruction is received by the carrier concentrator and then is converted into an HPLC power line carrier layer channel to continue issuing a trip instruction to the carrier breaker, the carrier breaker receives an instruction of the HPLC layer of the power line, and when the communication address matches itself, the meaning of the instruction is analyzed and the instruction is executed.
The invention has the beneficial effects that: through the data monitoring to the total ammeter of user's registering one's residence to according to the change in the lift of the transient current value in the electric power parameter curve, combine total power consumption to realize the judgement to user's family power consumption situation, carry out timely accurate demand response, still combine historical electric wire netting load curve to carry out power supply capacity and judge, satisfy the monitoring to user's power consumption details, realize timely demand response.
Drawings
Fig. 1 is a schematic connection structure of the present invention.
Fig. 2 is a schematic connection structure diagram of a communication module of the present invention.
Fig. 3 is a flow chart of the present invention.
In the figure, a user control end 1, an acquisition module 1.1, a carrier breaker 1.2, a carrier concentrator 1.3, a communication module 2, a master control end 3, a power control center 3.1, a monitoring management cloud platform 3.2 and a handheld control terminal 3.3 are arranged.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): as shown in fig. 1, the non-invasive demand response system and method of this embodiment includes a user control end 1, a communication module 2, and a master control end 3, which are connected in sequence. User control end 1 includes collection module 1.1, carrier circuit breaker 1.2 and carrier concentrator 1.3, collection module 1.1 links to each other with the general ammeter output of registering one's residence, carrier circuit breaker 1.2 links to each other with the general ammeter input of registering one's residence, carrier concentrator 1.3 links to each other with communication module 2. The user control end 1 is used for realizing data acquisition of a user end and receiving signals of the master control end for responding. The acquisition module is used for acquiring the power data of a user side, the carrier circuit breaker is used for realizing information interaction with the master control end and controlling circuit breaking, and the carrier concentrator is used for collecting signals of the carrier circuit breaker and converting the signals.
As shown in fig. 2, the communication module 2 includes a zero-crossing detection circuit, a signal transmission circuit, a signal coupling circuit, a signal receiving filter circuit, and a zero-crossing synchronization circuit, which are connected in sequence, wherein an input control end of the signal coupling circuit is connected to the user control end 1, and an input end of the zero-crossing detection circuit and an output end of the zero-crossing synchronization circuit are connected to the carrier signal. The communication module 2 is used for realizing information interaction between the master control ends of the user ends. The carrier wave judges sampling time through a zero-crossing detection circuit, and signals to be transmitted are sent through a signal sending circuit and are coupled to an electric wire through a signal coupling circuit for transmission; the information transmitted on the wire is also transmitted to the signal receiving filter circuit and the zero-crossing synchronization circuit through the signal coupling circuit, so that the information is transmitted in two directions, and the carrier sampling has the characteristic of stability.
The master control end 3 comprises a power control center 3.1 used for monitoring power load conditions and information pushing, the power control center 3.1 is connected with a monitoring management cloud platform 3.2, and the hand-held control terminal 3.3 is respectively connected with the power control center 3.1 and the monitoring management cloud platform 3.2. And the master control end 3 is used for monitoring the power load condition and realizing load regulation and control. The electric control center is used for monitoring electric load conditions, pushing information and issuing instructions, the monitoring management cloud platform is used for storing data to a cloud end, optimization is facilitated, and the handheld control terminal is used for remote monitoring and issuing instructions.
A method of operating a non-invasive demand response system, as shown in fig. 3, includes the steps of:
an S1 acquisition module 1.1 acquires user power parameters and user load curves and transmits the user power parameters and the user load curves to a master control end 3;
the S2 power control center 3.1 performs non-invasive determination on the real-time power consumption status of the user, and specifically includes:
s2.1, monitoring electric power parameters and fitting an electric power parameter curve through an electric meter arranged at the general input end of a user;
s2.2, extracting a transient current value in the power parameter curve and judging; and if the instantaneous current variation in the power parameter curve exceeds a set threshold value delta I, determining the instantaneous current variation as a non-current fluctuation variation value, calculating the instantaneous power variation according to the current and voltage data at the moment, and determining the switching of the electric appliances in the home of the user according to the reflection of the instantaneous power variation in the total load.
S2.3, if the transient current value exceeds a threshold value, extracting the power parameter change at the transient moment to construct a positive transient point and a negative transient point; and if the power instantaneous increase amount of the positive transient point is close to the power instantaneous decrease amount of the negative transient point, the same electric appliance is judged to be closed, and the situation that only the positive transient point exists is judged to be that the electric appliance is not closed.
S2.4, connecting the transient points to form a power parameter change line graph;
and S2.5, matching the positive transient point and the negative transient point before the moment before scheduling to realize the judgment of the electric appliance operated by the user.
The S3 power control center 3.1 performs compensation determination by combining the historical power grid load curve and the user load curve, and specifically includes:
s3.1, carrying out normalization processing on the historical power grid load curve and the low-voltage user load curve;
s3.2, performing compensation judgment at the same moment in the historical power grid load curve;
and S3.3, if the idle load exists in the historical power grid load curve at the same moment, compensating the user, and if the idle load does not exist, judging that the compensation cannot be performed and informing the user.
S4 realizes demand response regulation and control through the carrier circuit breaker 1.2, the power control center 3.1 issues an instruction after judgment is completed, the instruction is received through the carrier concentrator 1.3 and then converted into an HPLC power line carrier layer channel to continue issuing a tripping instruction to the carrier circuit breaker 1.2, the carrier circuit breaker 1.2 receives the instruction of the power line HPLC layer, and when the communication address is matched with the carrier circuit breaker, the instruction meaning is analyzed and the instruction is executed, so that demand response regulation and control are realized.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms user control side, general control side, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A non-intrusive demand response system, comprising:
the user control end (1) is used for realizing data acquisition of a user end and receiving a master control end signal to respond; and the communication module (2) is used for realizing information interaction between the master control ends of the user ends and is respectively connected with the user control end (1) and the master control end (3).
And the master control end (3) is used for monitoring the power load condition and realizing load regulation and control.
2. The non-invasive demand response system and method according to claim 1, characterized in that the user control terminal (1) comprises an acquisition module (1.1), a carrier circuit breaker (1.2) and a carrier concentrator (1.3), wherein the acquisition module (1.1) is connected with the output end of the household general electric meter, the carrier circuit breaker (1.2) is connected with the input end of the household general electric meter, and the carrier concentrator (1.3) is connected with the communication module (2).
3. The non-invasive demand response system and the non-invasive demand response method according to claim 1, wherein the communication module (2) comprises a zero-crossing detection circuit, a signal transmission circuit, a signal coupling circuit, a signal receiving filter circuit and a zero-crossing synchronization circuit which are connected in sequence, wherein an input control end of the signal coupling circuit is connected with a user control end (1), and an input end of the zero-crossing detection circuit and an output end of the zero-crossing synchronization circuit are connected with a carrier signal.
4. The non-invasive demand response system and method according to claim 1, wherein the master control terminal (3) includes a power control center (3.1) for monitoring power load conditions and pushing information, the power control center (3.1) is connected to the monitoring management cloud platform (3.2), and further includes a handheld control terminal (3.3) respectively connected to the power control center (3.1) and the monitoring management cloud platform (3.2).
5. A method of operating a non-invasive demand response system, comprising the steps of:
an S1 acquisition module (1.1) acquires user power parameters and user load curves and transmits the user power parameters and the user load curves to a master control end (3); s2, the power control center (3.1) judges the real-time power utilization status of the user in a non-invasive way;
s3 the power control center (3.1) combines the historical power grid load curve and the user load curve to make compensation judgment; s4 realizes demand response regulation and control through the carrier circuit breaker (1.2).
6. The operating method of the non-invasive demand response system according to claim 5, wherein the step S2 of non-invasively determining the real-time power utilization status of the user specifically comprises:
s2.1, monitoring electric power parameters and fitting an electric power parameter curve through an electric meter arranged at the general input end of a user;
s2.2, extracting a transient current value in the power parameter curve and judging;
s2.3, if the transient current value exceeds a threshold value, extracting the power parameter change at the transient moment to construct a positive transient point and a negative transient point;
s2.4, connecting the transient points to form a power parameter change line graph;
and S2.5, matching the positive transient point and the negative transient point before the moment before scheduling to realize the judgment of the electric appliance operated by the user.
7. The method as claimed in claim 6, wherein the step S2.2 is performed such that the instantaneous variation of the current in the power parameter curve exceeds a predetermined threshold Δ I, and then the instantaneous variation of the power is calculated according to the current and voltage data at that time, and the on/off of the electrical appliances in the home of the user is determined according to the instantaneous variation of the power embodied in the total load.
8. The method of claim 6, wherein the step S2.3 is performed by using the current change point at the instant of power increase as a positive transient point and the current change point at the instant of power decrease as a negative transient point, and matching the positive transient point and the negative transient point before the instant before scheduling, and if the power transient increase of the positive transient point is close to the power transient decrease of the negative transient point, determining that the same appliance is turned off, and determining that the appliance is not turned off if only the positive transient point exists.
9. The operating method of a non-invasive demand response system according to claim 1, wherein the step S3 of performing the compensation determination in combination with the grid load curve and the user load curve specifically comprises:
s3.1, carrying out normalization processing on the historical power grid load curve and the low-voltage user load curve;
s3.2, performing compensation judgment at the same moment in the historical power grid load curve;
and S3.3, if the idle load exists in the historical power grid load curve at the same moment, compensating the user, and if the idle load does not exist, judging that the compensation cannot be performed and informing the user.
10. The operating method of the non-invasive demand response system according to claim 5, wherein the power control center (3.1) issues the command after the determination of step S4 is completed, the command is received by the carrier concentrator (1.3) and then converted into the HPLC power line carrier layer channel to continue issuing the trip command to the carrier breaker (1.2), the carrier breaker (1.2) receives the command of the power line HPLC layer, and when the communication address matches itself, the command meaning is analyzed and the command is executed.
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| CN111754090A (en) * | 2020-06-08 | 2020-10-09 | 深圳供电局有限公司 | Power consumer demand side regulation and control method based on big data |
| CN111736012A (en) * | 2020-08-20 | 2020-10-02 | 国网浙江省电力有限公司湖州供电公司 | Non-invasive power load identification method and system |
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