CN218728683U - Regional integrated monitoring system for monitoring distributed power supply in power distribution network system - Google Patents
Regional integrated monitoring system for monitoring distributed power supply in power distribution network system Download PDFInfo
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- CN218728683U CN218728683U CN202223008871.7U CN202223008871U CN218728683U CN 218728683 U CN218728683 U CN 218728683U CN 202223008871 U CN202223008871 U CN 202223008871U CN 218728683 U CN218728683 U CN 218728683U
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Abstract
The utility model relates to a new forms of energy operation control technique aims at providing a regional integrated monitored control system that is arranged in distribution network system distributed generator to control. The method comprises the steps that an integrated monitoring device is included in a regional integrated monitoring system, and the integrated monitoring device comprises a shell and a main circuit board arranged in the shell; the main circuit board is provided with a signal acquisition unit, an action control unit, a communication module and a central control unit; the communication module is respectively connected with the signal acquisition unit, the action control unit and the central control unit through the Ethernet. The utility model discloses can make accurate in time collection and monitoring of electrical signal to distributed generator, carry out reliable quick transmission to control signal, can make the adjustment in combination with distributed generator's real-time running state; therefore, the defect that a monitoring mode based on steady-state information in the prior art cannot be dynamically adjusted according to random fluctuation of the distributed power supply is overcome.
Description
Technical Field
The utility model relates to a new forms of energy operation control technique, concretely relates to regional integrated monitored control system that is arranged in distribution network system distributed generator to control.
Background
With the problems of energy shortage and environmental pollution becoming more serious, the emerging renewable energy has been widely regarded as having the advantage of environmental friendliness. However, a power distribution network system with a large amount of new energy permeated has a complex structure, and distributed renewable power generation units are accessed through power electronic devices, so that the problems of large output fluctuation, small control inertia and the like are caused. Therefore, in order to realize reliable control of the power distribution network, the electrical states of each device and line node in the power distribution network must be monitored on line so as to realize rapid adjustment of the system.
In the prior art, a solution of a SCADA/EMS monitoring system is generally adopted, which is mainly based on a monitoring mode of steady-state information. However, the monitoring time scale is more than half an hour, so that the requirement that the power distribution network dynamically adjusts the operation state according to the random fluctuation of the renewable energy sources is difficult to meet.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is, overcome not enough among the prior art, provide a regional integrated monitored control system that is arranged in distribution network system distributed generator to control.
For solving the technical problem, the utility model discloses a concrete solution is:
the regional integrated monitoring system is used for monitoring the distributed power supply in a power distribution network system, wherein the distributed power supply comprises a distributed power generation device and a distributed energy storage device; the area integrated monitoring system comprises integrated monitoring equipment, wherein the integrated monitoring equipment comprises a shell and a main circuit board arranged in the shell; the main circuit board is provided with a signal acquisition unit, an action control unit, a communication module and a central control unit; the communication module is respectively connected with the signal acquisition unit, the action control unit and the central control unit through the Ethernet;
the communication module is connected with a converter of the distributed power generation device through a CAN bus; the communication module is connected with a converter of the distributed energy storage device through an RS485 serial port and a cable, and the operation of the communication module is monitored by adopting a modbus protocol; the signal acquisition unit and the action control unit are respectively connected with the converters of the distributed power generation device and the distributed energy storage device through cables.
As an improved scheme, the signal acquisition unit consists of a conditioning amplification circuit and an AD sampling circuit which are connected in sequence.
As an improved scheme, a programmable logic controller PLC is arranged in the action control unit.
As an improved scheme, the communication module includes a PHY chip and an optical fiber interface, and an ethernet transmission unit is formed by the PHY chip and the optical fiber interface.
As an improved scheme, for a distributed power supply without a current transformer, a voltage and current sensor for acquiring signals is arranged in the distributed power supply, and the voltage and current sensor is connected to the signal acquisition unit through a cable.
As an improved scheme, for a distributed power supply without a current transformer, a relay is arranged in the distributed power supply, and the relay is connected to an action control unit through a cable.
As an improved scheme, the integrated monitoring device further comprises a keyboard and a touch screen which are installed on the shell and are respectively connected to the central control unit through signal lines.
As an improved scheme, the communication module is further connected to an industrial personal computer located at the cloud end through an ethernet, and an ethernet switch for signal transfer is arranged in the ethernet.
Compared with the prior art, adopt the beneficial effects of the utility model are that:
1. the utility model discloses can utilize the converter among the distributed generator or locate the voltage current sensor real-time acquisition operational data among the distributed generator, after passing through signal acquisition unit and communication module conveying to the central control unit, calculate by the latter according to predetermineeing the control strategy, send control command and carry out remote control by action control unit to distributed generator.
Therefore, the utility model can accurately and timely collect and monitor the electric signals aiming at the distributed power supply, reliably and quickly transmit the control signals, and can make adjustment by combining the real-time running state of the distributed power supply; therefore, the defect that a monitoring mode based on steady-state information in the prior art cannot be dynamically adjusted according to random fluctuation of the distributed power supply is overcome.
2. The utility model discloses can realize local operation through the man-machine dialogue interface that keyboard and touch screen constitute to the operation conditions of appointed equipment is transferred in real time to the manual intervention mode, and makes the remote operation action. The field workload can be greatly reduced through regional integrated management, and the working efficiency is improved.
3. The utility model relates to a regional integrated monitored control system can monitor and control a plurality of distributed generator in setting for the regional scope simultaneously, ensures that regional within range distribution network system operation is stable. After networking a plurality of regional integrated monitoring systems through the Ethernet, the industrial personal computer at the high in the clouds can be utilized to monitor the regional integrated monitoring systems at the same time, the stable operation of a main power grid is guaranteed, and the real-time monitoring and fault warning of the distributed power supply in a larger regional range are realized.
Drawings
Fig. 1 is a schematic diagram of a central area integrated monitoring system according to the present invention;
FIG. 2 is a schematic diagram of an external signal transmission manner of the area integrated monitoring system;
fig. 3 is a schematic diagram of a signal acquisition implementation.
Detailed Description
It should be noted at first that signal acquisition unit, action control unit, communication module and central control unit are hardware component. In the actual use of the functional components, applications with built-in software may be involved. However, the applicant believes that the content of the application part of the relevant software module is not included in the technical solution of the present invention, and the technical means of the present invention for solving the technical problem does not depend on the specific design of the software module. After having read the application file carefully and understood the realization principle and the object of the utility model, the application of the utility model can be realized by the software programming skill that the skilled person in the art can completely use the prior known technology.
One skilled in the art will appreciate that, in addition to implementing portions of the systems and their various devices, modules, units in purely computer readable program code, the present invention can be implemented entirely by logically programming method steps to implement the same functions as the systems and their various devices, modules, units in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system and various devices, modules and units thereof provided by the present invention are all considered as a hardware component, and the devices, modules and units included therein for implementing various functions can also be considered as structures in the hardware component; means, modules, units for performing various functions may also be regarded as structures within hardware components.
It should also be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention and are not intended to limit the present invention.
As shown in fig. 1, the utility model discloses a regional integrated monitoring system for distributed power source monitoring in power distribution network system, distributed power source include distributed power generation device (DG, PV etc.) and distributed energy storage device (ES); the area integrated monitoring system comprises integrated monitoring equipment, wherein the integrated monitoring equipment comprises a shell and a main circuit board arranged in the shell; the main circuit board is provided with a signal acquisition unit, an action control unit, a communication module and a central control unit; the communication module is respectively connected with the signal acquisition unit, the action control unit and the central control unit through Ethernet; the integrated monitoring equipment is also provided with a keyboard and a touch screen which are arranged on the shell and are respectively connected to the central control unit through signal lines.
The communication module comprises a PHY chip and an optical fiber interface, and the PHY chip and the optical fiber interface form an Ethernet transmission unit. The communication module is connected with a converter of the distributed power generation device through a CAN bus; the communication module is connected with a converter of the distributed energy storage device through an RS485 serial port and a cable, and the operation of the communication module is monitored by adopting a modbus protocol; the communication module is further connected to an industrial personal computer located at the cloud end through the Ethernet, and an Ethernet switch used for signal transfer is arranged in the Ethernet.
The signal acquisition unit consists of a conditioning amplifying circuit and an AD sampling circuit which are sequentially connected, and a Programmable Logic Controller (PLC) is arranged in the action control unit. The signal acquisition unit and the action control unit are respectively connected with the converters of the distributed power generation device and the distributed energy storage device through cables. For the distributed power supply without the current transformer, a voltage and current sensor for acquiring signals is arranged in the distributed power supply, and the voltage and current sensor is connected to the signal acquisition unit through a cable. For a distributed power supply without a current transformer, a relay is provided in the distributed power supply, and the relay is connected to an action control unit through a cable.
The following further illustrates the implementation of the present invention:
in the integrated monitoring equipment, a central control unit is used as a core for control and operation to complete a data processing task; the signal acquisition unit is used for collecting topological information in the power distribution network and conditioning electrical signals from the monitoring points; the communication module is used for realizing data interaction among all the unit modules in real time and rapidly and realizing communication with the distributed power supply; the action control unit remotely controls the power equipment according to the instruction issued by the central control unit, and can realize the functions of fault unit removal, equipment operation mode selection, static switch control and the like.
In general, for more advanced distributed power supply equipment, a converter of the advanced distributed power supply equipment can directly provide an operating signal, a conditioning and amplifying circuit in a signal acquisition unit directly amplifies the signal, and a high-precision AD sampling circuit accurately converts an analog quantity into a digital quantity for a central control unit to process. For distributed power supply equipment which is not provided with a converter earlier in factory leaving, a voltage and current sensor for sampling needs to be additionally arranged, and a strong current signal is converted into a weak current signal and then is transmitted to a signal acquisition unit.
Similarly, in general, for a more advanced distributed power supply device, a converter thereof can receive and execute a control signal forwarded by a programmable logic controller PLC in an action control unit. However, for distributed power supply equipment which is not provided with a converter in the early factory, a relay capable of responding quickly needs to be additionally arranged, and the relay executes a control action command.
In the utility model, the central control unit can select a commercial product STM32F103 single chip microcomputer; the PHY chip in the communication module can be selected from RTL8208 model products of Realtek company in the market. The voltage sensor can be made of the product of Emolson JDZ-10, and the current transformer can be made of the product of Emolson LZBJ 9-10A. The conditioning amplifying circuit can adopt operational amplifiers of TI company OPA451 and the like, and the AD sampling circuit can adopt products of TI company ADS1263 precision ADC and the like. The programmable logic controller PLC in the action control unit can select products of type S7-1200 of Siemens of the market product, and the relay can select products of type JQX-13FA-1Z of Zhengtai of the market product.
Based on the utility model discloses a distribution network monitor terminal can realize distribution network electrical signal's accurate collection, monitoring data and control signal's reliable fast transmission, to power equipment's quick control and fault protection, can satisfy the requirement of carrying out real time monitoring to the distribution network.
Claims (8)
1. A regional integrated monitoring system for monitoring a distributed power supply in a power distribution network system, wherein the distributed power supply comprises a distributed power generation device and a distributed energy storage device; the system is characterized in that the regional integrated monitoring system comprises integrated monitoring equipment, and the integrated monitoring equipment comprises a shell and a main circuit board arranged in the shell; the main circuit board is provided with a signal acquisition unit, an action control unit, a communication module and a central control unit; the communication module is respectively connected with the signal acquisition unit, the action control unit and the central control unit through Ethernet;
the communication module is connected with a converter of the distributed power generation device through a CAN bus; the communication module is connected with a converter of the distributed energy storage device through an RS485 serial port and a cable, and the operation of the communication module is monitored by adopting a modbus protocol; the signal acquisition unit and the action control unit are respectively connected with the converters of the distributed power generation device and the distributed energy storage device through cables.
2. The area integrated monitoring system according to claim 1, wherein the signal acquisition unit is composed of a conditioning amplification circuit and an AD sampling circuit which are connected in sequence.
3. The area integrated monitoring system according to claim 1, wherein a Programmable Logic Controller (PLC) is arranged in the action control unit.
4. The system according to claim 1, wherein the communication module comprises a PHY chip and an optical fiber interface, and an ethernet transmission unit is formed by the PHY chip and the optical fiber interface.
5. The area integrated monitoring system according to claim 1, wherein for a distributed power supply without a current transformer, a voltage current sensor for acquiring signals is provided in the distributed power supply, and the voltage current sensor is connected to the signal acquisition unit through a cable.
6. The area integrated monitoring system according to claim 1, wherein for a distributed power supply not configured with a current transformer, a relay is provided in the distributed power supply, and the relay is connected to the action control unit through a cable.
7. The area integrated monitoring system according to claim 1, wherein the integrated monitoring device further comprises a keyboard and a touch screen mounted on the housing, and each connected to the central control unit through a signal line.
8. The area integrated monitoring system according to claim 1, wherein the communication module is further connected to an industrial personal computer located in a cloud through an ethernet, and an ethernet switch for signal transfer is disposed in the ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223008871.7U CN218728683U (en) | 2022-11-11 | 2022-11-11 | Regional integrated monitoring system for monitoring distributed power supply in power distribution network system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223008871.7U CN218728683U (en) | 2022-11-11 | 2022-11-11 | Regional integrated monitoring system for monitoring distributed power supply in power distribution network system |
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| Publication Number | Publication Date |
|---|---|
| CN218728683U true CN218728683U (en) | 2023-03-24 |
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| CN202223008871.7U Active CN218728683U (en) | 2022-11-11 | 2022-11-11 | Regional integrated monitoring system for monitoring distributed power supply in power distribution network system |
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| CN (1) | CN218728683U (en) |
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