CN104184211A - Double-loop intelligent electric meter for direct load control and working method - Google Patents

Abstract

The invention relates to a double-circuit smart meter for direct load control and a working method, comprising: a processor module, a communication module connected to the processor module, and a control module; one of the double-circuits is an uninterruptible power supply circuit, and the other As an interruptible power supply loop, the processor module is suitable for controlling the interruption or conduction of the interruptible power supply loop through the control module according to the control instruction received by the communication module. The present invention achieves the purpose of power dispatch by directly controlling part of the circuit load through the remote or automatic control of the interruptible power supply circuit in the output double circuit, and the output double circuit provided by the double circuit smart meter only needs to be connected to the circuit The transformation with the minimum cost can meet the power consumption scheme of the two power supply circuits of the user. The user can choose the appropriate power consumption scheme independently according to the needs of the electrical appliances, considering the characteristics of the price and power supply guarantee rate of the two power supply circuits. To achieve the purpose of saving electricity cost.

Description

Dual loop smart meter for direct load control and working method

technical field

The invention belongs to the technical field of electricity metering and load control, and in particular relates to a double-circuit smart meter for direct load control and a working method.

Background technique

In order to alleviate the shortage of electricity consumption, peak and valley electricity prices have become a necessary means, but only the adjustment of electricity charges cannot effectively solve the current situation of electricity shortage; therefore, it is necessary to detect the user's load or power consumption to achieve interruption A power supply circuit to adjust power distribution.

However, the current electric meter does not have such a function. The traditional electric meter only has one circuit to output electric energy. For example, when the load in the home is too large or the power factor is too low, there will be potential safety hazards in the line and the problem of low energy utilization.

Therefore, how to design a smart meter that can directly control loads according to needs and achieve user-defined is a technical problem in this field.

Contents of the invention

The purpose of the present invention is to provide a dual-circuit smart meter for direct load control. This dual-circuit smart meter solves the problem of power supply companies adjusting the output power of the grid by interrupting control of an interruptible power supply circuit in the output double circuit. Allocation of technical issues.

In order to solve the above technical problems, the present invention provides a dual-circuit smart meter for direct load control, including: a processor module, a communication module connected to the processor module, and a control module; One of the output double circuits is an uninterruptible power supply circuit, and the other output circuit is an interruptible power supply circuit. The processor module is adapted to implement the control module for the interruptible power supply circuit according to the control instructions received by the communication module. interrupt or conduction control.

Further, in order to realize remote communication with the upper computer and realize uploading or downloading control instructions of power consumption data, the dual-circuit smart meter also includes: a detection module suitable for separately collecting power consumption data of the dual output circuits, and the processing A storage module connected to the processor module for storing corresponding power consumption data; the processor module is also suitable for uploading the power consumption data to the host computer through the communication module, and the control instruction passes through the power distribution network on which the host computer is based. Generate real-time power load data and send it to each double-circuit smart meter to realize the interruption or conduction control of the corresponding interruptible power supply circuit.

Optionally, the communication module adopts two types of power line carrier communication module and/or RS-485 module, and any one can be reasonably selected according to the use site. Since the signal transmission distance of these two communication methods is only a few hundred meters to one thousand meters, the remote communication with the upper computer should generally be carried out through the intermediate communication node installed in the building.

Further, in order to realize the functions of on-site debugging, detection and convenient on-site meter reading of the double-circuit electric meter; the double-circuit smart electric meter also includes: an infrared communication module, a key module and a display module connected to the processor module; The infrared communication module is suitable for transmitting the received meter reading or debugging signal to the processor module, the button module is suitable for inputting corresponding control commands to realize on-site debugging, and the display module is suitable for displaying the running status and power consumption of the electric meter data.

Further, in order to realize the automatic control of the dual-circuit smart meter, the detection module is also equipped with an active power detection unit and/or a power factor detection unit at the end of the interruptible power supply circuit to obtain the active power and/or power factor of the interruptible power supply circuit. Power factor detection signal; if the current active power is greater than the preset active power threshold, and/or the current power factor is less than the preset power factor threshold, the processor module is suitable for controlling the interruption of the interruptible power supply circuit control instructions.

On the other hand, the present invention also provides a working method of a dual-loop smart meter for direct load control, so as to solve the technical problem of the power supply company adjusting and distributing the output power of the grid.

In order to solve the above technical problems, the present invention also provides a working method of a dual-circuit smart meter on the basis of the double-circuit smart meter, including:

The processor module is adapted to realize interruption or conduction control of the interruptible power supply loop through the control module according to the control instruction.

The dual-circuit smart meter also includes:

A detection module adapted to separately collect power consumption data of dual output circuits, and a storage module connected to the processor module for storing corresponding power consumption data; the working method also includes: the processor module is also adapted to The power consumption data is uploaded to the host computer through the communication module, and the control command is generated through the real-time power load data of the distribution network based on the host computer, and sent to each double-circuit smart meter to realize the control of the corresponding intermittent Interruption or conduction control of the power supply circuit. the

The detection module is also provided with an active power detection unit and/or a power factor detection unit at the end of the interruptible power supply circuit to obtain a detection signal of active power and/or power factor of the interruptible power supply circuit; the working method also includes: If the current active power is greater than the preset active power threshold, and/or the current power factor is lower than the preset power factor threshold, the processor module is adapted to control a control instruction for interrupting the interruptible power supply circuit.

Interruptible The above-mentioned technical solution of the present invention has the following advantages compared with the prior art: the present invention realizes the interruptible power supply circuit in the output double circuit through the processor module, the communication module connected with the processor module, and the control module. Remote interrupt control to achieve the purpose of shutting down the power supply circuit to adjust power distribution; the output dual circuit provided by the dual-circuit smart meter only needs to modify the line at a minimum cost to meet the power consumption scheme of the two power supply circuits of the user , and users can combine the characteristics of the two output circuits according to their own needs, and choose a power consumption plan that suits them to achieve the purpose of saving electricity costs.

Description of drawings

In order to make the content of the present invention more easily understood, the present invention will be described in further detail below in conjunction with the specific embodiments according to the accompanying drawings, wherein

Figure 1 is a functional block diagram of a dual-circuit smart meter;

Figure 2 is a block diagram of the internal structure of the dual-circuit smart meter;

Fig. 3 is a schematic diagram of the external structure of the dual-circuit smart meter.

Among them, the control module 1, the detection module 2, the fuse 3, the electric meter casing 4, the 485 communication line 5, the button module 6, the display module 7, the receiving window 8 of the infrared communication module, the fire wire L1 of the intermittent power supply circuit, and the non-interruptible power supply The live line L2 of the loop.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in combination with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.

The essence of the dual-circuit smart meter of the present invention is to control the output dual circuits through the meter, that is, the output dual circuits respectively correspond to two different live wires, and each live wire is controlled by the smart meter. Among them, one live wire is an uninterruptible power supply circuit, and the electricity price is relatively expensive, and the other live wire is an interruptible power supply circuit, and the electricity price is relatively low, and the circuit uses an electronic switch to control on-off. The above-mentioned smart meter can provide two power supply circuits. The power supply company can price the two different circuits separately, and the power supply can be staggered to increase the power capacity. Users can choose power circuits according to their own needs, or conduct unified scheduling according to the power supply company. Save electricity cost.

Example 1

Figure 1 shows the functional block diagram of a dual-loop smart meter.

As shown in Figure 1, a dual-circuit smart meter for direct load control includes: a processor module, a communication module connected to the processor module, and a control module; One of the output circuits is an uninterruptible power supply circuit, and the other output circuit is an interruptible power supply circuit. The processor module is suitable for interrupting or conducting the interruptible power supply circuit through the control module according to the control instructions received by the communication module. automatic control.

Optionally, the control module 1 may use an electronic switch.

Optionally, the processor module may use a MSP430 series single-chip microcomputer.

The dual-circuit smart meter also includes: a detection module adapted to separately collect power consumption data of the dual output circuits, and a storage module connected to the processor module for storing corresponding power consumption data; the processor module also It is suitable for uploading the power consumption data to the host computer through the communication module, and the control command is generated through the real-time power load data of the distribution network based on the host computer, and sent to each double-circuit smart meter to realize the corresponding Interruption or conduction automatic control of the intermittent power supply circuit.

Specifically, the power consumption data is uploaded to the host computer, and corresponding control instructions are received from the host computer, so as to realize the remote control of the interruption operation of the interruptible power supply circuit; wherein, the power consumption data includes: comprehensive data of user power consumption and electric meter Operational data, comprehensive data of user electricity consumption includes: user electricity consumption, user-side load, voltage, current and other data, and meter operation data includes: meter load, service life of the meter and other data.

The processor module is also connected with a power line carrier communication module and/or RS-485 module to form a power line carrier and/or RS-485 communication interface, and the processor module is suitable for passing through a power line carrier communication module or RS-485 module to communicate with the host computer; or the communication module directly communicates with the host computer through the relay communication node. Optionally, the power line carrier communication module may adopt, for example, the SENS-09 zero-crossing dual-mode carrier communication module, and the SC1128 chip designed and developed by Beijing Zhiyuanlihe Company.

The upper computer is a monitoring terminal, the monitoring terminal is located in the electric power company (power supply company), and the real-time power load data of the distribution network comes from the dispatching center of the electric power company, that is, by downloading from the upper computer, the upper computer It is suitable for remote control of electric meters and collection and summary of electricity consumption data. Optionally, when the electric power company summarizes the electricity consumption data of each dual-circuit smart meter in a region, it dispatches and distributes the load in the region uniformly on the basis of the data summary. That is, when the local power consumption situation determines that the power supply of the interruptible power supply circuit needs to be interrupted, the power company sends a control command to the electric meter through the communication module, and the electric meter executes and controls the control through the processor module after receiving the control command. The electronic switch in the module cuts off the live wire L1 of the interruptible power supply circuit, which completes the interruption control of the interruptible power supply circuit; and then realizes the readjustment of the grid power in the area.

Further, when the electric power company needs to count the electricity consumption of each electric meter, the electric meter is ordered to upload the user's electricity consumption through the communication module, and the processor module uploads the user's electricity consumption through the communication module, and after these After the steps, the function of remotely counting electricity charges and electricity consumption of the electric power company is completed, and remote meter reading is realized.

In another preferred embodiment of the detection module 2, the detection module is also provided with an active power detection unit and/or a power factor detection unit at the end of the interruptible power supply circuit to realize the active power and/or power factor detection unit of the interruptible power supply circuit. or power factor detection; if the current active power is greater than the preset active power threshold, and/or the current power factor is less than the preset power factor threshold, the processor module is suitable for controlling the interruption of the interruptible power supply circuit The control command can be interrupted to adjust the power distribution.

Specifically, the detection of the active power and/or power factor of the interruptible power supply circuit is realized through the detection module 2, that is, active power and power factor can be detected separately, or both can be detected; They can be compared individually or both at the same time. Optionally, the user can set the household load and/or power factor by himself; or distribute the user's active power and set the power factor through the host computer. For example, the preset active power threshold is 5kw, that is, if the currently detected active power is greater than 5kw, it means that the current circuit is overloaded, that is, the interruptible power supply circuit is interrupted; as for the power factor, it is generally believed that it is between 0.7-1 When it is between 0.4 and 0.7, it is the general operation area; when it is less than 0.4, it is the non-economic operation area. Therefore, the power factor threshold in the present invention can be preset as 0.7, that is, when the power factor of the current loop is lower than 0.7, it indicates that the power utilization rate of the line is low, and the interruptible power supply loop is interrupted; The two power consumption data are both detected, and the method of "AND" is adopted. When the active power is greater than 5kw and the power factor is lower than 0.7, the interruptible power supply circuit is interrupted. Optionally, the corresponding threshold can be set by the user or the power company according to needs. When implementing control, the host computer can compare the thresholds to obtain corresponding control instructions, or compare them locally to realize interrupt control.

Figure 2 shows a schematic diagram of a dual-circuit smart meter.

Fig. 3 shows a schematic structural diagram of a dual-circuit smart meter.

Further, as shown in Figure 2 and Figure 3, the dual-circuit smart meter also includes: an infrared communication module connected to the processor module, a key module 6 and a display module 7; the infrared communication module is suitable for receiving The meter reading or debugging signal is sent to the processor module, the button module 6 is suitable for inputting corresponding control commands to realize on-site debugging, and the display module 7 is suitable for displaying the running status and power consumption data of the meter. Through the above peripheral devices, the corresponding functions of the dual-circuit smart meter are enriched to meet the needs of users and power supply units for use, monitoring and setting. Specifically, when the power company needs on-site commissioning, detection or on-site meter reading, the on-site staff transmits the command to the smart meter through the infrared communication module, and the processor module transmits the data and the required meter according to the command. The status of the checked electric meter is sent back to the on-site staff through the short-distance infrared transmission module, and after these steps, the functions of fast on-site debugging, detection and simple on-site meter reading are completed. Optionally, the display module 7 is a liquid crystal module.

The live wires of the two input circuits are set separately, as shown in Figure 2, the live wire L1 of the interruptible power supply circuit, the live wire L2 of the non-interruptible power supply circuit, and the neutral wire are shared.

Optionally, the host computer can also generate corresponding remote control instructions according to the time period to control the interruption or conduction of the interruptible power supply circuit, such as but not limited to conduction at 11:00 p.m. and interruption at 7:00 a.m. It is necessary to set the interruption time of the interruptible power supply circuit by oneself.

The double-circuit intelligent electric meter of the present invention can not only realize the remote control of the upper computer, but also realize the local control of the processor module.

Example 2

As shown in Figures 1 to 3, on the basis of Embodiment 1, a working method for a dual-circuit smart meter for direct load control includes the following steps: the processor module is adapted to implement the control module through the control module Interruption or conduction control of an interruptible power supply circuit.

Preferably, the dual-circuit smart meter also includes:

A detection module adapted to separately collect power consumption data of the dual output circuits, and a storage module connected with the processor module for storing corresponding power consumption data.

The working methods also include:

The processor module is also adapted to upload the power consumption data to the upper computer through the communication module, and the control command is generated by the real-time power load data of the distribution network based on the upper computer, and sent to each dual-loop intelligent The electric meter is used to realize the interruption or conduction control of the corresponding interruptible power supply circuit.

The detection module located in the interruptible power supply circuit includes: an active power detection unit and/or a power factor detection unit, so as to realize the detection of the active power and/or power factor of the interruptible power supply circuit;

The working methods also include:

If the current active power is greater than the preset active power threshold, and/or the current power factor is smaller than the preset power factor threshold, the processor module is adapted to locally and automatically control the interruption of the interruptible power supply circuit.

The specific implementation process of discontinuity is as follows: For example, the preset active power threshold is 5kw, that is, if the currently detected active power is greater than 5kw, it means that the current circuit is overloaded, that is, the interruptible power supply circuit is interrupted; for power factor, generally It is believed that when it is between 0.7-1, it is an economic operation area; when it is between 0.4-0.7, it is a general operation area; when it is less than 0.4, it is a non-economic operation area. Therefore, the power factor threshold in the present invention can be preset as 0.7, that is, when the power factor of the current loop is lower than 0.7, it means that the power utilization rate of the line is low, and the interruptible power supply loop will be interrupted.

By using this dual-circuit smart meter, the power company can interrupt the intermittent power supply circuit to adjust power distribution according to the electricity consumption data on the user side, which is equivalent to increasing the total power generation and adding a virtual power plant. The dual-circuit power supply is precisely An effective solution under the premise of minimal line modification. Users can also choose a suitable power consumption plan according to the characteristics of the two power supply circuits so as to achieve the purpose of saving electricity costs.

It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principle of the present invention, and not to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention shall fall within the protection scope of the present invention. Furthermore, it is intended that the appended claims of the present invention embrace all changes and modifications that come within the scope and metesques of the appended claims, or equivalents of such scope and metes and bounds. the

Claims (8)

1. A dual-circuit smart meter for direct load control, characterized in that, comprising: a processor module, a communication module and a control module connected to the processor module; One of the output circuits of the dual-circuit smart meter is an uninterruptible power supply circuit, and the other output circuit is an interruptible power supply circuit. The processor module is adapted to control the interruption or conduction of the interruptible power supply circuit through the control module according to the control instruction received by the communication module. 2. The dual-circuit smart meter according to claim 1, characterized in that, the dual-circuit smart meter also comprises: a detection module adapted to collect the electricity consumption data of the dual-output circuits respectively, and connected to the processor module A storage module for storing corresponding power consumption data; The processor module is also adapted to upload the power consumption data to the upper computer through the communication module, and the control command is generated by the real-time power load data of the distribution network based on the upper computer, and sent to each dual-loop intelligent The electric meter is used to realize the interruption or conduction control of the corresponding interruptible power supply circuit. 3. The dual-circuit smart meter according to claim 2, wherein the communication module includes a power line carrier and/or RS-485 communication interface, that is, the processor module is suitable for directly or via the communication module Communicate with the upper computer through the relay communication node, or the communication module directly communicates with the upper computer through the relay communication node. 4. The dual-circuit smart meter according to claim 3, wherein the dual-circuit smart meter further comprises: an infrared communication module, a button module and a display module connected to the processor module; The infrared communication module is suitable for transmitting the received meter reading or debugging signal to the processor module, the button module is suitable for inputting corresponding control instructions to realize on-site debugging, and the display module is suitable for displaying the running status and power consumption of the meter Quantitative data. 5. The dual-circuit smart meter according to claim 3, wherein the detection module is also provided with an active power detection unit and/or a power factor detection unit at the end of the interruptible power supply circuit, so as to obtain the detection signal of active power and/or power factor; If the current active power is greater than the preset active power threshold, and/or the current power factor is lower than the preset power factor threshold, the processor module is adapted to control the interruption of the interruptible power supply circuit. 6. A working method of the dual-circuit smart meter according to claim 1, comprising: The processor module is adapted to realize interruption or conduction control of the interruptible power supply loop through the control module according to the control instruction. 7. The working method of the double-circuit smart meter according to claim 6, wherein the double-circuit smart meter further comprises: A detection module adapted to separately collect power consumption data of the dual output circuits, and a storage module connected to the processor module for storing corresponding power consumption data; The working methods also include: The processor module is also adapted to upload the power consumption data to the upper computer through the communication module, and the control command is generated by the real-time power load data of the distribution network based on the upper computer, and sent to each dual-loop intelligent The electric meter is used to realize the interruption or conduction control of the corresponding interruptible power supply circuit. 8. The working method of the dual-circuit smart meter according to claim 7, wherein the detection module is also provided with an interruptible active power detection unit and/or a power factor detection unit at the end of the intermittent power supply circuit, to obtain Detection signal of active power and/or power factor of interruptible power supply circuit; The working methods also include: If the current active power is greater than the preset active power threshold, and/or the current power factor is lower than the preset power factor threshold, the processor module is adapted to control the interruption of the interruptible power supply circuit.