CN209545254U - A kind of substation's intelligent alternative-direct-current power-supply system - Google Patents

A kind of substation's intelligent alternative-direct-current power-supply system Download PDF

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Publication number
CN209545254U
CN209545254U CN201920602618.3U CN201920602618U CN209545254U CN 209545254 U CN209545254 U CN 209545254U CN 201920602618 U CN201920602618 U CN 201920602618U CN 209545254 U CN209545254 U CN 209545254U
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module
power
substation
direct
monitoring
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赵国栋
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YANGZHOU SENTAI ELECTRICAL EQUIPMENT CO Ltd
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YANGZHOU SENTAI ELECTRICAL EQUIPMENT CO Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16—Electric power substations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses

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Abstract

The utility model belongs to electricity grid substation dispatching automation technical field, and in particular to a kind of substation's intelligent alternative-direct-current power-supply system.It includes the station level, wall and process layer being sequentially connected electrically; station level includes monitoring center and interchanger; for realizing monitoring, control and the information exchange to whole system equipment; wall includes Protection Module and monitoring module; it is communicated according to 103 communication protocols and IEC61850 communication protocol by Ethernet between station level and wall, is communicated between wall and process layer by RS485 interface.The utility model can be provided design, production, installation, the service of all power supplys by a producer, and all station power issues of package solution reduce buying, coordinate, link up cost, and the cost of product life cycels is reduced up to 30% or more；The utility model uses layer distributed framework, and by unified intelligent network platform, the centrally connected power supply of realization substation's power supply and unified monitoring management are easy to use.

Description

A kind of substation's intelligent alternative-direct-current power-supply system
Technical field
The utility model belongs to electricity grid substation dispatching automation technical field, and in particular to a kind of substation's intelligence friendship Direct current integrated power-supply system.
Background technique
Forward position of the smart grid as world power System Development, each state are all stepping up research and development, and smart grid One core technology is exactly intelligent substation, it is the latest development direction of substation, is protruded realizing that smart grid has Meaning.China has been devoted to one strong smart grid of construction, and China's smart grid and the relevant technologies are in height at present Fast developing stage, the button link indispensable as smart grid, intelligent substation are realized in strong smart grid construction One of energy conversion and the product platform of control are the important components of smart grid, and realization wind energy, solar energy etc. are new The important support of energy access power grid.Intelligent substation can be better met in technology and function smart grid it is information-based, It automates, is interactive, being the key that the six big links for being connected smart grid power generation, transmission of electricity, power transformation, distribution, electricity consumption and scheduling, it Acquisition, analysis processing and the shared feedback to operation of power networks information are realized, to realize the intelligentized control method to power grid and adjusting.
Intelligent alternative-direct-current power-supply system is the key equipment in intelligent substation, with traditional conventional plant power source The characteristics of system is compared, this power-supply system is that the multiple power sources system such as independent alternating current and direct current, inversion, communication originally System carries out unified design, design studies including early period, monitoring, it is specifically used during installation, debugging etc. all pass through system One information approach is planned and is managed, and can effectively realize the integrated fortune such as network communication, monitoring, system interlink Make.As all power automatic systems, communication system, a distant place execute system, the divide-shut brake of high-voltage circuitbreaker, relay protection, The AC and DC power supply of automatic device, signal device etc., its quality are directly related to the safe operation of power grid, it is that power generation is set Standby and power transmission and transforming equipment " heart ".
However routinely substation, remain in the current electric utility in China the most extensively, the seed type that is generally arranged. Broad especially for this region in China, technology innovation can not be harmonious, so routinely substation is still in China Substation's operation system in play an important role, routinely substation, its power-supply system be generally divided into alternating current and direct current, Several different types such as UPS and communication power supply.Under general substation's operation mode, AC system is the main of substation Energy supply equipment.Such as the work such as specific electric energy savings, power operation require to rely on AC system to be completed.This , it is intended that whether the operation that the stability of AC system how, will have a direct impact on whole transformer station is stable, reliable.Electricity Source is the most important thing of whole transformer station work and operation, and currently our substation, is generally adopted by each power supply subsystem System separately design, separate management and use, separate group screen, different power-supply systems researched and developed by different manufacturers, produced, Assembling and installation, the debugging in later period etc..There is many disadvantages for various power subsystems under this mode operation.Specifically It is as follows:
(1) existing substation station is managed with power supply by different majors personnel, and AC system and direct current system are by power transformation Personnel carry out operation and maintenance, and UPS is safeguarded that communication power supply is safeguarded by Communication Personnel by automation personnel, in addition to human resources It cannot totally deploy, communication power supply, UPS etc. are not included in the stringent inspection range of substation yet.
(2) subsystems are separately designed by different suppliers, resource cannot comprehensively consider, and make once to invest significant increase Add, economy is poor.
(3) for system design view, comprehensive automation system of transformer substation is from integrated distribution formula system to digitlization Development.Complex automatic system has become station power information shared platform at present, stands and uses power information also always as synthesis The simple satellite information of automated system, therefore it is also difficult to realize system administration and information sharing, in correlation subsystem variation It cannot coordinate entire station and be run in the best way with power supply.
Utility model content
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a kind of substation's intelligence AC/DC integrated power-supply system.
The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of substation's intelligent alternative-direct-current Power-supply system, including the station level, wall and process layer being sequentially connected electrically, the station level includes monitoring center and exchange Machine, for realizing monitoring, control and the information exchange to whole system equipment, the wall include Protection Module and Monitoring module, between the station level and wall according to 103 communication protocols and IEC61850 communication protocol by Ethernet into Row communication, is communicated between the wall and process layer by RS485 interface.
Further, the process layer includes that AC power supply module, ups power (uninterruptible power supply) module, switching value are adopted Collect module, AC/DC charging module, DC/DC power module, composite measurement module, insulation monitoring module and ice storing time module.
Further, the AC power supply module is used for the acquisition for completing to exchange two-way the voltage, current information that carry out, The ups power module is for providing the acquisition of alternating current-direct current input voltage and ac output voltage, electric current and frequency information.
Further, led to according to 103 communication protocols by Ethernet between the station level and Protection Module Letter, is communicated according to IEC61850 communication protocol by Ethernet between the station level and monitoring module.
Further, the ice storing time module is DHR200C420 type current sensor.
The beneficial effects of the utility model are:
1, the utility model can provide design, production, installation, the service of all power supplys, package solution by a producer All station power issues, it is possible to reduce buying is coordinated, links up cost, the costs of product life cycels reduce up to 30% with On；
2, the intelligent alternative-direct-current power-supply system of the utility model uses layer distributed framework, carries out intelligent integral The real-time prison to intelligent integral power-supply system running state information is realized in each subelement decentralized supervisory control of power supply and centralized management It surveys；By unified intelligent network platform, the centrally connected power supply of realization substation's power supply and unified monitoring management, and then realize and exist Its operating condition of the state-detection of line and information data can be shown by integrated monitoring unit and be converted to master pattern number.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of substation's intelligent alternative-direct-current power-supply system described in the utility model specific embodiment Structural schematic diagram；
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation Novel protection scope.
It should be noted that unless otherwise indicated, technical term or scientific term used in this application should be this reality The ordinary meaning understood with novel one of ordinary skill in the art.
In this application unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc. Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings Condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment
As shown in Figure 1, a kind of substation provided by the utility model includes with intelligent alternative-direct-current power-supply system Station level, wall and the process layer being sequentially connected electrically, the station level includes monitoring center and interchanger, for realizing to whole Monitoring, control and the information exchange of a system equipment, the wall include Protection Module and monitoring module, the station It is communicated according to 103 communication protocols and IEC61850 communication protocol by Ethernet between control layer and wall, the interval Layer is communicated between process layer by RS485 interface.
Further, the process layer includes that AC power supply module, ups power (uninterruptible power supply) module, switching value are adopted Collect module, AC/DC charging module, DC/DC power module, composite measurement module, insulation monitoring module and ice storing time module.
Further, the AC power supply module is used for the acquisition for completing to exchange two-way the voltage, current information that carry out, The ups power module is for providing the acquisition of alternating current-direct current input voltage and ac output voltage, electric current and frequency information.
Further, led to according to 103 communication protocols by Ethernet between the station level and Protection Module Letter, is communicated according to IEC61850 communication protocol by Ethernet between the station level and monitoring module.103 communication protocols Data are transmitted with serial ports, are mainly used in protection, therefore pass through between Protection Module and station level according to 103 communication protocols Ethernet, which carries out communication, can effectively ensure that communication efficiency and communication security.
Further, the ice storing time module is DHR200C420 type current sensor.
Wherein, monitoring module uses 7.0 cun of TFT color touch screens, with small in size, simple and beautiful structure is generous, installation The features such as convenient succinct, group match system is flexible, monitoring module beautiful interface is generous, operates succinct, data organization compact and reasonable, is good Good man-machine interaction experience.Main interface can show the main wiring diagram of intelligent integral power supply monitoring system, each function of real-time display The operating condition and information of unit.Monitoring function is perfect, high-intelligentization, audible and visual alarm.Monitoring module passes through RS485 communication bus To each component part of system: AC power supply module, ups power module, switching value acquisition module, AC/DC charging module, DC/ DC power module, composite measurement module, insulation monitoring module and ice storing time module realize population parameter local and remote monitoring, So that system becomes the entirety of a combination.Monitoring module supports IEC61850 communications protocol, is furnished with standard IEC 61850 Communication interface facilitates access automated system, and realization is " four is distant " and unattended, so that entire intelligent substation or even intelligence electricity Net is implemented as possibility.From the logically and physically conceptive functional stratification by substation, the model of the automation of transformation substations is enabled more Adduction reason, the interface of each interlayer are more clear.
AC power source acquisition module completes the acquisition to the voltage, current information of two-way alternating current inlet wire；Ups power module mentions For the acquisition of the information such as alternating current-direct current input voltage and ac output voltage, electric current, frequency；Switching value acquisition module is for exchanging Switch acquisition on ups power screen；AC/DC charging module is the core component of entire intelligent integral power-supply system, is used Power factor reaches 99.99%, and the ST220V20A series module of efficiency >=94% is composed, and the exchange completed in power grid is arrived The conversion of direct current, to the control load such as all controls, protection, automatic device in substation and all kinds of dc motors, breaker The living loads such as switching-on mechanism provide the DC power supply reliably supplied；DC/DC power module provides communication 48V power supply；It is comprehensive to survey Amount module is for monitoring accumulator battery voltage, controlling voltage, control mother current, battery charging and discharging electric current etc.；Insulation monitoring module is used In the detection for completing to feed out DC bus insulation and direct current branch insulation；Ice storing time module is for real-time monitoring monomer electricity Cell voltage.
This system is the object modeling based on IEC61850 agreement to realize standardization, forms it into the defeated of a specification Out, the seamless connection of system is realized, it solves the problems, such as the interoperability and protocol conversion of electric substation automation system product.If It sets monitoring center to communicate with substation background monitoring, realizes the data integrated real-time monitoring of station power source system, monitored object Control, adjusting and the method for operation, centralized management convenient to carry out, decentralised control.Centralized Monitoring uses bus-organization, can be convenient Ground is monitored the extension of function, maintains easily.
Conventional stations power supply and intelligent alternative-direct-current power supply compare
As seen from the above table, intelligent alternative-direct-current power-supply system, with good economic efficiency and social benefit:
(1) it reduces and repeats to configure, reduce one-time investment: cancelling communication storage battery and UPS battery；Cancel charging module Preceding exchange automatic switching loop；Cancel data acquisition (distribution monitor) etc. of the former direct current system to AC portion.
(2) it reduces long term maintenance cost: replacing original four group maintenances personnel by a group maintenance personnel, manpower can be greatly reduced Cost payout；The costs such as buying, coordinated management can be reduced.
(3), TCO (Total Cost of Ownership) is reduced
Design, production, installation, the service of all power supplys are provided by a producer, all stations of package solution are asked with power supply Topic, it is possible to reduce buying is coordinated, links up cost, and the cost of product life cycels is reduced up to 30% or more.
(4) to feeder line intelligent control, waste of energy can be reduced.
(5) existing all kinds of lead-acid accumulator products gradually just will appear charging difficulty, capacity usually in service life It reduces, self discharge is serious and failure is caused to be scrapped.The producing cause of the above problem can finally be attributed to, because of pole plate and electrolyte Between repeated charge and generate " irreversible vulcanization " phenomenon, when this phenomenon accumulation to a certain extent, will cause The pole plate of battery cure object covering, lose activity and be not available.Currently, generally being taken for the processing of old and useless battery solid Change the mode of landfill.Although which can effectively prevent contamination, the materials such as lead contained by battery, mercury are still a Environmentally friendly hidden danger.In addition, the industrial solid wastes disposal site built to solidify landfill, construction cost is high.Plumbic acid is stored Battery environmental protection problem, reducing its dosage is best solution.Cancel communication and UPS battery group to environmental protection with extremely heavy The contribution wanted.
Intelligent transformer station is the upgrading and development on the basis of digital transformer substation, is to combine smart grid practical On the basis of demand, to realize its intelligentized substation after being improved to automated control technology.It is sent out as smart grid Electricity, transmission of electricity, power transformation, distribution, electricity consumption and the linking key link of scheduling, intelligent substation have the safety and stability of smart grid Important role.With scientific and technological progress, the development of using energy source, renewable energy will be promoted and be utilized by extensive, intelligence Changing substation is largely such as to be provided convenience using the intervention of solar energy, the distributed generation resource of wind energy.Intelligent transformer station from It technically and in operation is all improved, is all adjusted from software and hardware, support connecing for a large amount of distributed generation resources Enter and interacted with control centre, power grid is made unidirectionally to be powered from original single large-scale injection point to largely setting using distributed power generation Standby multi-source multi-direction modular mode transformation, realizes the coordinated operation of power distribution network and microgrid, meets using between clean energy resource Having a rest property distributed generation resource can be with plug and play.Intelligent alternative-direct-current power-supply system is then the base of intelligent substation safe operation Plinth puts into operation from the higher and higher and a large amount of unattended station for changing degree as substation is comprehensive, correspondinglys increase station alterating and direct current The operation and management level of source entirety has extremely important meaning.Existing station power supply is in resource consolidation, automatization level, management mould All there is also very big optimization space, compact-sized, economic and reliable intelligent substation AC/DC integrated power supplys for formula etc. System has broad application prospects.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (5)

1. a kind of substation intelligent alternative-direct-current power-supply system, it is characterised in that: including be sequentially connected electrically station level, Wall and process layer, the station level includes monitoring center and interchanger, for realizing monitoring, the control to whole system equipment System and information exchange, the wall include Protection Module and monitoring module, are pressed between the station level and wall It is communicated according to 103 communication protocols and IEC61850 communication protocol by Ethernet, is passed through between the wall and process layer RS485 interface is communicated.
2. a kind of substation intelligent alternative-direct-current power-supply system according to claim 1, it is characterised in that: described Process layer includes AC power supply module, ups power module, switching value acquisition module, AC/DC charging module, DC/DC power supply mould Block, composite measurement module, insulation monitoring module and ice storing time module.
3. a kind of substation intelligent alternative-direct-current power-supply system according to claim 2, it is characterised in that: described AC power supply module is used for the acquisition for completing to exchange two-way the voltage, current information that carry out, and the ups power module is for mentioning For the acquisition of alternating current-direct current input voltage and ac output voltage, electric current and frequency information.
4. according to a kind of described in any item substation's intelligent alternative-direct-current power-supply systems of Claims 2 or 3, feature It is: is communicated according to 103 communication protocols by Ethernet between the station level and Protection Module, the station level It is communicated according to IEC61850 communication protocol by Ethernet between monitoring module.
5. a kind of substation intelligent alternative-direct-current power-supply system according to claim 4, it is characterised in that: described Ice storing time module is DHR200C420 type current sensor.
CN201920602618.3U 2019-04-28 2019-04-28 A kind of substation's intelligent alternative-direct-current power-supply system Active CN209545254U (en)

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Application Number Priority Date Filing Date Title
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