CN110556812A - Energy management system of direct current power distribution system - Google Patents
Energy management system of direct current power distribution system Download PDFInfo
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- CN110556812A CN110556812A CN201910786715.7A CN201910786715A CN110556812A CN 110556812 A CN110556812 A CN 110556812A CN 201910786715 A CN201910786715 A CN 201910786715A CN 110556812 A CN110556812 A CN 110556812A
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- 238000007726 management method Methods 0.000 claims abstract description 24
- 230000003993 interaction Effects 0.000 claims abstract description 16
- 238000004364 calculation method Methods 0.000 claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 12
- 238000004422 calculation algorithm Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 description 9
- 238000013500 data storage Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention provides an energy management system of a direct-current power distribution system, which comprises an ARM and a DSP (digital signal processor) in data connection with the ARM, wherein a human-computer interaction interface program module and a data communication program module are arranged in the ARM; the DSP is internally provided with an analog measurement program module, a calculation processing program module and a data storage program module. The energy management system of the direct current power distribution system has higher reliability, and effectively realizes the monitoring of the data of the direct current power distribution system so as to realize the energy management of the direct current power distribution system.
Description
Technical Field
The invention belongs to the technical field of direct current power distribution, and particularly relates to an energy management system of a direct current power distribution system.
Background
Compared with an alternating-current distribution network, the direct-current distribution network provides a direct-current bus for loads, the direct-current loads can be directly supplied with power by the direct-current bus, the alternating-current loads need to be supplied with power after passing through inverter equipment, and if the proportion of the direct-current loads in the loads is large, the direct-current distribution network has great advantages. The direct-current distribution network has small line loss, high reliability, no need of phase-frequency control and strong distributed power supply accepting capability.
in recent years, direct current transmission technology is gradually mature and widely applied to power systems, converters, filters, circuit breakers and the like are developed more mature, a direct current transmission network is more stable than an alternating current transmission network, and the stability problem of the alternating current transmission network can be fundamentally eliminated by adopting a direct current mode to build a large power grid.
As technology matures, more and more distributed power sources distributed near the electric load are connected to the direct current power distribution system, and intermittent power sources such as wind power generation and solar power generation are also connected to the direct current power distribution system. Therefore, energy management of the dc power distribution system plays a crucial role in the operating efficiency of the dc power distribution system.
Disclosure of Invention
Therefore, the invention provides an energy management system of a direct current power distribution system, which is higher in reliability.
a DC power distribution system energy management system, the system comprising an ARM and a DSP in data connection with the ARM, wherein,
the ARM is internally provided with a human-computer interaction interface program module and a data communication program module;
The DSP is internally provided with an analog measurement program module, a calculation processing program module and a data storage program module.
Further, the air conditioner is provided with a fan,
The human-computer interaction interface program module is used for controlling the display of the display unit, the definition of the input equipment keys and the reading of data;
The data communication program module is internally provided with a communication protocol program, a protocol selection program, a communication mode and a selection program.
Furthermore, the human-computer interaction interface program module controls the display unit to display the real-time power and the peak power of the direct current power distribution system and the running state of the direct current power distribution system.
Further, the analog measurement program module comprises an analog quantity acquisition program and an analog quantity transmission program, wherein,
the analog quantity acquisition program is used for driving the monitoring unit to detect monitoring parameters of the direct current power distribution system;
And the analog quantity transmission program is used for sending the obtained monitoring parameters.
Further, the calculation processing program module is used for calculating the received data.
further, one or more algorithm subroutines are built in the calculation processing program module.
Further, the data storage program module is used for driving the data storage in the storage device or the storage area.
Further, the data storage program module comprises a register definition program and a memory address allocation program.
The energy management system of the direct current power distribution system has higher reliability, and effectively realizes the monitoring of the data of the direct current power distribution system so as to realize the energy management of the direct current power distribution system. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 shows a diagram of an energy management system of a dc power distribution system according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The energy management system of the direct current power distribution system adopts a dual-core structure of an ARM (Advanced RISC Machine, RISC (Reduced Instruction Set Computer) microprocessor) processor and a DSP (Digital Signal Processing) processor, and constructs a software architecture based on a Linux system.
fig. 1 is a diagram illustrating an energy management system structure of a dc power distribution system according to an embodiment of the invention. As shown in fig. 1, the ARM processor and the DSP processor implement data connection through data interfaces such as a parallel bus.
The ARM processor is mainly responsible for man-machine interaction and data communication, and therefore a man-machine interaction interface program module and a data communication program module are arranged in the ARM.
The human-computer interaction interface program module is mainly responsible for controlling display of a display unit (such as a liquid crystal display, an LED display, an LCD display and the like), definition of input equipment keys, reading of data and the like. Illustratively, the human-computer interaction interface program module controls the display unit to display energy data such as real-time power, peak power and the like of the direct current power distribution system, running states (including normal, abnormal and the like) of the direct current power distribution system and the like; the man-machine interaction interface program module defines keys of an input device (such as a keyboard, a virtual keyboard of a display device, an input control and the like), for example, a first key of the keys is defined as an on-off key or a digital data key and the like; and defining the reading of the input data of the human-computer interface interactive program module, such as receiving a control command input through a key and the like.
And the data communication program module comprises a communication protocol program, a protocol selection program, a communication mode and a selection program thereof. The communication protocol program sets the format, sequence and rate of data, link management, traffic regulation, error control, etc. Illustratively, in the embodiment of the present invention, as for a communication protocol between a substation and a dispatching center, 101 communication is selected to be used as the communication protocol; the 103 specification is adopted in the substation automation station.
The DSP processor is mainly responsible for analog measurement, calculation processing and data storage, and therefore an analog measurement program module, a calculation processing program module and a data storage program module are arranged in the DSP.
The analog measurement program module comprises an analog quantity acquisition program and an analog quantity transmission program. The analog quantity acquisition program is used for driving the monitoring unit to detect monitoring parameters (including various energy parameters in the direct current power distribution system, such as power, voltage, current, power consumption and the like) of the direct current power distribution system, such as data of whether the power between a direct current power supply and a load is matched, power fluctuation data of the direct current power distribution system in a power supply process and the like. In the embodiment of the invention, the monitoring parameters of the direct current distribution system are measured through the sensor, for example, the current sensor measures the current data of the direct current distribution system. And the measured analog quantity can be converted into digital quantity by an analog-to-digital converter and sent to the DSP. The analog quantity transmission program is used for sending the obtained data such as the monitoring parameters to the relevant units, and illustratively, the analog quantity transmission program drives to send the measured data to the ARM to display the data.
And the calculation processing program module is used for calculating the received data. The calculation processing program module is provided with a plurality of basic algorithm subprograms. Illustratively, the calculation processing program module comprises a data abnormity judgment algorithm subprogram. The analog quantity measuring program module sends the measured current data to the DSP, the DSP compares the current data through a data abnormity judgment algorithm subprogram in the calculation processing program module (for example, compares the detected current data with a value of normal current), so as to determine whether the measured data is normal, and sends out indication information such as alarm and the like when the data is abnormal or sends an instruction for stopping power supply to the direct current power distribution system, so as to realize management.
And the data storage program module is used for driving data to be stored in the storage device or the storage area. The data storage program module comprises a register definition program, a memory address allocation program and the like. The register definition program is used for defining a register in a memory; and the memory address allocation program is used for allocating memory addresses. Illustratively, the register definition program defines registers in the DSP and/or the ARM, allocates memory addresses based on the memory address allocation program, and stores data acquired by each program module into the corresponding registers. For example, the result of comparing the current data by the above-described data abnormality judgment algorithm subroutine is stored in a register of the DSP.
in the embodiment of the invention, the ARM processor and the DSP processor realize data connection through a parallel bus, and the ARM data and the DSP data can realize interaction. For example, the ARM obtains data such as current or comparison result obtained by the analog measurement program module from the DSP, and sends the obtained data to the display for display through the human-computer interaction interface program module. And the ARM sends the data acquired by the human-computer interaction interface program module, such as the acquired control instruction input through the key and the like, to the DSP. And the DSP performs corresponding processing after receiving the data sent by the ARM. For example, the DSP controls the analog measurement program module to collect current data based on the received control instruction (e.g., a data collection instruction); the relevant data is stored to the corresponding storage location based on the received control instruction (e.g., a data storage instruction).
in the invention, the dual-processor architecture of ARM and DSP is adopted, the division of different processing is different, and the problem of high failure rate caused by overlarge burden of a single processor is effectively reduced. The direct current power distribution system is safer and more reliable. The simple data processing such as setting of a human-computer interaction interface and a data communication mode is distributed to the ARM for processing, and the efficiency is higher. And the processing of acquisition, transmission, data calculation and data storage of the analog quantity is distributed to a professional digital processor such as a DSP, so that the processing is more accurate. The management of the DC power distribution system can be effectively realized.
It is not necessary that each step in the present invention is closely connected, and unless otherwise stated, it does not exclude other steps between the two steps, and it is within the scope of the present invention as long as the object of the present invention is achieved. The claimed system may be comprised of a single device, a plurality of devices, a single element, or a plurality of elements. The devices and systems are not necessarily connected to each other by wires or directly, and an indirect connection or a wireless connection is within the scope of the present invention as long as the object of the present invention can be achieved.
In the present invention, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in hardware, the functionality may be implemented within circuitry that may be suitable for use in processing circuitry in a system. The steps of a method or algorithm disclosed herein may be embodied in a processor-executable software module executed, which may reside on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. a DC power distribution system energy management system, the system comprising an ARM and a DSP in data connection with the ARM, wherein,
The ARM is internally provided with a human-computer interaction interface program module and a data communication program module;
The DSP is internally provided with an analog measurement program module, a calculation processing program module and a data storage program module.
2. The DC power distribution system energy management system of claim 1,
the human-computer interaction interface program module is used for controlling the display of the display unit, the definition of the input equipment keys and the reading of data;
The data communication program module is internally provided with a communication protocol program, a protocol selection program, a communication mode and a selection program.
3. The DC power distribution system energy management system of claim 1 or 2, wherein,
The human-computer interaction interface program module controls the display unit to display the real-time power and the peak power of the direct-current power distribution system and the running state of the direct-current power distribution system.
4. The DC power distribution system energy management system of claim 1,
the analog measurement program module comprises an analog quantity acquisition program and an analog quantity transmission program, wherein,
the analog quantity acquisition program is used for driving the monitoring unit to detect monitoring parameters of the direct current power distribution system;
And the analog quantity transmission program is used for sending the obtained monitoring parameters.
5. The DC power distribution system energy management system of claim 1,
And the calculation processing program module is used for calculating the received data.
6. The DC power distribution system energy management system of claim 1 or 5, wherein,
One or more algorithm subprograms are built in the calculation processing program module.
7. The DC power distribution system energy management system of claim 1,
And the data storage program module is used for driving the data to be stored in the storage device or the storage area.
8. The DC power distribution system energy management system of claim 1 or 7,
The data storage program module comprises a register definition program and a memory address allocation program.
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| CN201910786715.7A CN110556812A (en) | 2019-08-23 | 2019-08-23 | Energy management system of direct current power distribution system |
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