CN108233532B - Special secondary interface device for emergency transformer substation - Google Patents
Special secondary interface device for emergency transformer substation Download PDFInfo
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- CN108233532B CN108233532B CN201710919062.6A CN201710919062A CN108233532B CN 108233532 B CN108233532 B CN 108233532B CN 201710919062 A CN201710919062 A CN 201710919062A CN 108233532 B CN108233532 B CN 108233532B
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- 238000004891 communication Methods 0.000 claims abstract description 37
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- 238000012806 monitoring device Methods 0.000 claims description 10
- 230000003993 interaction Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
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- 230000005540 biological transmission Effects 0.000 description 2
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- 230000010354 integration Effects 0.000 description 2
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- 230000008439 repair process Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- H02J13/0013—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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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
- 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
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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
- 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
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Abstract
The invention provides a special secondary interface device for an emergency transformer substation, which belongs to the field of transformer substations. The emergency transformer substation is communicated with an original transformer substation with a power supply fault by using the built-in secondary interface equipment, and the communication is carried out to the dispatching center based on the acquired monitoring data in the original transformer substation, so that the dispatching center can timely redeploy a power supply line in the emergency transformer substation based on the acquired information to meet the demand of timely power supply, thereby replacing failure data points of the original transformer substation by partial interval data points of the emergency transformer substation, quickly replacing failure data points in dispatching communication, ensuring the consistency of dispatching communication, and reducing the influence of the input use of the emergency transformer substation on the dispatching.
Description
Technical Field
The invention belongs to the field of transformer substations, and particularly relates to a special secondary interface device for an emergency transformer substation.
Background
As an important component of the power system, the transformer substation is responsible for the transmission, conversion, distribution and other functions of power energy, the safe operation of the transformer substation is related to the safe and stable operation of the whole power system and the reliable power supply to users, once the transformer substation has the conditions of accident emergency repair, technical transformation, load mutation and the like, the stability and the quality of the power supply of the transformer substation are reduced, thereby influencing the safe and stable operation of the whole power grid and the reliable power supply to the users,
based on the above situation, emergency substations, especially 110kV emergency substations, are urgently needed to be researched for temporarily accessing a power grid system or replacing an original substation for power supply under the conditions of accident emergency repair, technical transformation, load sudden change and the like of a certain substation.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the special secondary interface equipment which connects the original substation with the fault connection with the emergency substation and realizes the emergency power supply in a mode of replacing information parts.
In order to achieve the technical purpose, the invention provides a special secondary interface device for an emergency transformer substation, wherein at least one line measurement and control device is arranged in an original transformer substation, the line measurement and control device is communicated with a maneuvering center through a telecontrol device, and a local monitoring device and an interlocking device are also arranged on the line measurement and control device, and the special secondary interface device is characterized in that:
the emergency transformer station is provided with secondary interface equipment, and when temporary power supply is needed, the emergency transformer station communicates with the original transformer station through the secondary interface equipment.
Optionally, in the emergency substation, the secondary interface device communicates with the telecontrol equipment in the original substation through a 104 communication protocol.
Optionally, at least one path of emergency line measurement and control equipment is arranged in the emergency substation, and the emergency line measurement and control equipment transmits the monitored data to the dispatching center connected with the secondary interface equipment through the secondary interface equipment.
Optionally, a temporary monitoring device connected to the secondary interface device is further provided in the emergency substation.
Optionally, the method further includes a dispatching communication method based on the emergency substation, where the dispatching communication method includes:
when the power failure occurs in the original transformer substation, the telecontrol equipment in the original transformer substation sends the working information of the line measurement and control equipment which is still in the working state to the secondary interface equipment through a 104 communication protocol;
the method comprises the following steps that (1) measurement and control information is sent to secondary interface equipment by emergency line measurement and control equipment in an emergency transformer substation;
and the secondary equipment interface receives the working information and the measurement and control information, integrates the line states of the original transformer substation and the emergency transformer substation, and uploads the integrated data to a dispatching center in the emergency transformer substation.
Optionally, the secondary device interface receives the working information and the measurement and control information, and integrates the line states in the original transformer substation and the emergency transformer substation, including:
the secondary interface device integrates the original substation operation data and the emergency line data to match the original dispatching communication model.
Optionally, after the original transformer substation has a power failure, the temporary monitoring device in the emergency transformer substation acquires the working information of the line measurement and control device in the original transformer substation through the secondary interface device, and performs line monitoring based on the working information.
Optionally, a joint locking measure is implemented in the emergency substation and the original substation.
Optionally, the interlocking means comprises:
all interlocking functions of the original transformer substation are quitted;
the interlocking is realized in the secondary interface equipment through configuration;
forwarding the remote command through the secondary interface equipment;
the remote command comprises a remote scheduling command and a temporary monitoring device command.
The technical scheme provided by the invention has the beneficial effects that:
the emergency transformer substation is communicated with an original transformer substation with a power supply fault by using the built-in secondary interface equipment, and the communication is carried out to the dispatching center based on the acquired monitoring data in the original transformer substation, so that the dispatching center can timely redeploy a power supply line in the emergency transformer substation based on the acquired information to meet the demand of timely power supply, thereby replacing failure data points of the original transformer substation by partial interval data points of the emergency transformer substation, quickly replacing failure data points in dispatching communication, ensuring the consistency of dispatching communication, and reducing the influence of the input use of the emergency transformer substation on the dispatching.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a dedicated secondary interface device for an emergency substation provided by the invention.
Detailed Description
To make the structure and advantages of the present invention clearer, the structure of the present invention will be further described with reference to the accompanying drawings.
Example one
The invention provides a special secondary interface device for an emergency transformer substation, as shown in figure 1, at least one path of line measurement and control equipment is arranged in an original transformer substation, the line measurement and control equipment is communicated with a maneuvering center through telecontrol equipment, and local monitoring equipment and interlocking equipment are also arranged on the line measurement and control equipment, which is characterized in that:
the emergency transformer station is provided with secondary interface equipment, and when temporary power supply is needed, the emergency transformer station communicates with the original transformer station through the secondary interface equipment.
In implementation, after the existing emergency substation completely or partially replaces the original substation, the local monitoring of the original substation cannot normally complete the daily operation and maintenance work due to partial interval exit, and how to reconstruct a set of temporary monitoring equipment is required to meet the requirement of temporary monitoring of an on-duty worker. After the emergency substation replaces the original substation completely or partially, the interval data points of the original substation fail, and the telecontrol data points fail.
And in combination with the fact that the communication between the current 110KV transformer substation and the dispatching is basically transmitted by adopting a unified 104 standard, all transmitted data volume basically meets the requirement of daily operation and maintenance of the transformer substation, and by combining some considerations, a secondary interface device is designed to be in communication interaction with telecontrol equipment of the original transformer substation, so that the work of secondary integration of the original transformer substation and the emergency transformer substation and access dispatching when the emergency transformer substation is put into operation is completed.
The original transformer substation is provided with line measurement and control equipment for measuring and controlling the state of a line, and the line measurement and control equipment sends the acquired line state information to a dispatching center through telecontrol equipment, so that line dispatching is completed, and normal power supply is guaranteed. And meanwhile, the local monitoring equipment is used for completing line monitoring so as to find abnormality in time.
Based on the requirements, the embodiment of the application provides the special secondary interface device for the emergency substation, the emergency substation is communicated with the original substation with the power supply fault through the built-in secondary interface device, communication is performed on the scheduling center based on the acquired monitoring data in the original substation, so that the scheduling center can timely relocate the power supply line in the emergency substation based on the acquired information to meet the demand of timely power supply, the failure data point of the original substation is replaced by the partial interval data point of the emergency substation, the failure data point in scheduling communication is quickly replaced, the consistency of scheduling communication is guaranteed, and the influence of the use of the emergency substation on scheduling is reduced to the minimum.
According to the scheme, the dispatching communication point tables, the wiring diagrams and the interlocking strategy of all the transformer substations in jurisdiction can be configured in advance in the use area of the emergency transformer substation, and the transformer substations which are replaced are selected when the emergency transformer substation is really put into use, the data point tables at the replaced intervals are configured, and the interlocking strategy of the original transformer substation is quitted, so that convenience and rapidness are really realized; vice versa, the recovery work when the emergency substation quits can also be rapidly completed.
Optionally, in the emergency substation, the secondary interface device communicates with the telecontrol equipment in the original substation through a 104 communication protocol.
In implementation, the protocol 104 is a network version of the protocol 101, the protocol 101 can only transmit one link frame at a time, while the protocol 104 can continuously transmit a plurality of link frames, the transmission efficiency is obviously higher than that of the protocol 101, and the protocol 104 has a collision detection and error retransmission mechanism of TCP/IP, has higher reliability and stability than the protocol 101, and has more relaxed limitation on communication delay. According to the scheme, data interaction is carried out only with station control layer telecontrol equipment through a 104 standard protocol, the emergency transformer substation and the original transformer substation are completely independent in secondary network, no interaction and data communication work exists, the design completely avoids the difference between the intelligent transformer substation and the conventional transformer substation, the problems of multiple types of communication protocols and high complexity of the spacer layer of the conventional transformer substation are completely avoided, and compatibility of different transformer substations is really realized.
The reference model used by the 104 protocol is derived from the ISO-OSI reference model of open systems interconnection, but it uses only 5 layers, and in fact the 104 protocol is a combination of the 101 protocol and the network transport functions provided by TCP/IP, so that the 101 protocol can be used in various network types within TCP/IP. The 104 protocol specifies that the transport layer uses TCP ports, the number of the used ports is 2404, and for TCP based applications there are two modes of operation, server mode and client mode, the difference being: when a TCP connection is established, the server never actively initiates a connection request, the server is in a listening state all the time, and after a connection request from the client is listened, the server receives the connection request, so that a TCP connection is established, and the server and the client can transmit and receive data through the virtual communication link. The 104 protocol provides for the control station (dispatch system) to act as a client and the controlled station (station-side RTU) to act as a server. Therefore, whether the scheduling end software or the RTU end software necessarily involves TCP/IP based network programming.
The working principle is as follows:
1. the 104 protocol takes a substation as a server and a main station as a client.
2. The master station can automatically judge, switch and process data information from a network and in a conventional mode, and the uniqueness of the data is guaranteed.
3. In the case of multi-client access, the security level is controlled by MAC address and IP address division. If the server finds that the IP is repeated, the execution of the control command should be rejected.
4. In order to ensure the safe, stable and reliable operation of the network mode, the substation communicating in the network mode defines pictures, databases and reports according to the single substation at the master station end.
Optionally, at least one path of emergency line measurement and control equipment is arranged in the emergency substation, and the emergency line measurement and control equipment transmits the monitored data to the dispatching center connected with the secondary interface equipment through the secondary interface equipment.
In implementation, similar to the original substation, the emergency substation is provided with emergency line measurement and control equipment for detecting an emergency line, and the emergency line measurement and control equipment transmits the detected measurement and control information to a dispatching center connected with the secondary interface equipment. Thereby the dispatching center can timely redeploy the power supply circuit in the emergency power station based on the acquired information to meet the demand of timely power supply,
optionally, a temporary monitoring device connected to the secondary interface device is further provided in the emergency substation.
In implementation, however, after a part of lines are cut off, related data fails, and an original monitoring system cannot completely realize the function of the substation, and the currently adopted method is as follows:
1. exiting the original monitoring system function;
2. all data are accessed to secondary interface equipment;
3. the temporary monitoring equipment performs data interaction with the secondary interface equipment to complete the temporary monitoring function. However, in such a mode, as the data points are forwarded through the telecontrol server, the corresponding data points are reduced, and the functions of the temporary monitoring per se are definitely reduced compared with those of the original substation monitoring system, but the requirement of routine operation and maintenance of the substation can be met.
Optionally, the method further includes a dispatching communication method based on the emergency substation, where the dispatching communication method includes:
when the power failure occurs in the original transformer substation, the telecontrol equipment in the original transformer substation sends the working information of the line measurement and control equipment which is still in the working state to the secondary interface equipment through a 104 communication protocol;
the method comprises the following steps that (1) measurement and control information is sent to secondary interface equipment by emergency line measurement and control equipment in an emergency transformer substation;
and the secondary equipment interface receives the working information and the measurement and control information, integrates the line states of the original transformer substation and the emergency transformer substation, and uploads the integrated data to a dispatching center in the emergency transformer substation.
In implementation, based on the emergency substation provided with the secondary interface device, a scheduling communication method is further provided, which specifically includes:
in the alternative mode, if a related data point fails due to the removal of part of the line of the original substation, the following operation steps are required:
1. cutting off the communication between the original transformer substation and the dispatching center;
2. connecting the original substation telecontrol server into secondary interface equipment, and uploading the related data of the rest operating lines;
3. the secondary interface equipment is accessed to the relevant data of the emergency line;
4. the secondary interface equipment integrates the operation data and the emergency line data of the original transformer substation to match the original dispatching communication model, and the original transformer substation is unchanged from the dispatching center.
Thus, consistency of scheduling communications is achieved.
Optionally, the secondary device interface receives the working information and the measurement and control information, and integrates the line states in the original transformer substation and the emergency transformer substation, including:
the secondary interface device integrates the original substation operation data and the emergency line data to match the original dispatching communication model.
In implementation, the secondary interface device merges and processes the working information and the measurement and control information according to the information or data format in the original substation to obtain data with the same data format as that in the original substation, so that the dispatching center can still dispatch the lines capable of supplying power according to the original dispatching mode on the premise that part of the lines of the original substation have faults.
Optionally, after the original transformer substation has a power failure, the temporary monitoring device in the emergency transformer substation acquires the working information of the line measurement and control device in the original transformer substation through the secondary interface device, and performs line monitoring based on the working information.
In implementation, in order to ensure that the power supply line can still be scheduled by the scheduling center after the original substation fails, the temporary monitoring equipment in the emergency substation needs to acquire the working information of the line measurement and control equipment in the original substation through the secondary interface equipment, and line monitoring is performed based on the working information, so that the power supply line in the original substation is prevented from further failure, and the probability of further loss in the existing failure state is reduced.
Optionally, a joint locking measure is implemented in the emergency substation and the original substation.
In the implementation, the interlocking condition between the transformer substations is complex, the realization modes are different according to the difference between the intelligent transformer substation and the traditional transformer substation or different integration manufacturers, and the interlocking is related to a plurality of space layers on a station control layer. After the emergency transformer substation completely or partially replaces the original transformer substation, because part of the intervals are replaced by the emergency transformer substation, the interlocking mechanism of the original transformer substation is definitely completely or partially failed, and a set of interlocking alternative mechanism needs to be researched to meet the requirement that the emergency transformer substation is put into use and operates reliably.
Optionally, the interlocking means comprises:
all interlocking functions of the original transformer substation are quitted;
the interlocking is realized in the secondary interface equipment through configuration;
forwarding the remote command through the secondary interface equipment;
the remote command comprises a remote scheduling command and a temporary monitoring device command.
In the implementation, the existing transformer substation has many interlocking modes at present, different stations have different methods (see the descriptions of original right half red interlocking 1, 2, 3 and 4), and a simple method is adopted in the alternative scheme in order to adapt to the diversity of the alternative transformer substation. Because the current secondary interface equipment is the only place with full station data (including partial lines of the original transformer substation and emergency lines), the operation steps are as follows: 1. all interlocking functions of the original transformer substation are withdrawn; 2. the interlocking is realized in the secondary interface equipment through configuration; 3. all remote commands (including remote scheduling commands and temporary monitoring system commands) are transmitted through the secondary interface equipment, and all the secondary interface equipment can realize interlocking and can completely meet the requirement of operation and maintenance of the transformer substation.
The invention provides a special secondary interface device for an emergency transformer substation, wherein at least one path of line measurement and control equipment is arranged in an original transformer substation, the line measurement and control equipment is communicated with a maneuvering center through telecontrol equipment, local monitoring equipment and interlocking equipment are also arranged on the line measurement and control equipment, the secondary interface device is arranged in the emergency transformer substation, and when temporary power supply is needed, the emergency transformer substation is communicated with the original transformer substation through the secondary interface device. The emergency transformer substation is communicated with an original transformer substation with a power supply fault by using the built-in secondary interface equipment, and the communication is carried out to the dispatching center based on the acquired monitoring data in the original transformer substation, so that the dispatching center can timely redeploy a power supply line in the emergency transformer substation based on the acquired information to meet the demand of timely power supply, the failure data points of the original transformer substation are replaced by partial interval data points of the emergency transformer substation, the failure data points in dispatching communication are quickly replaced, the consistency of dispatching communication is ensured, and the influence of the input and use of the emergency transformer substation on the dispatching is reduced.
The sequence numbers in the above embodiments are merely for description, and do not represent the sequence of the assembly or the use of the components.
The above description is only exemplary of the present invention and should not be taken as limiting the invention, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A special secondary interface equipment for emergency substation is equipped with at least one way line measurement and control equipment in former transformer substation, and line measurement and control equipment communicates through telemechanical equipment and transfer center, still is equipped with local supervisory equipment and interlocking equipment on line measurement and control equipment, its characterized in that:
the emergency transformer substation is provided with secondary interface equipment, and when temporary power supply is needed, the emergency transformer substation communicates with the original transformer substation through the secondary interface equipment;
in the emergency transformer substation, the secondary interface equipment communicates with the telecontrol equipment in the original transformer substation through a 104 communication protocol;
and at least one path of emergency line measurement and control equipment is arranged in the emergency transformer substation, and the emergency line measurement and control equipment transmits the monitored data to a dispatching center connected with the secondary interface equipment through the secondary interface equipment.
2. The dedicated secondary interface device for an emergency substation of claim 1, wherein in the emergency substation, there is further provided a temporary monitoring device connected to the secondary interface device.
3. The dedicated secondary interface device for an emergency substation according to any one of claims 1 to 2, further comprising a dispatch communication method based on an emergency substation, the dispatch communication method comprising:
when the power failure occurs in the original transformer substation, the telecontrol equipment in the original transformer substation sends the working information of the line measurement and control equipment which is still in the working state to the secondary interface equipment through a 104 communication protocol;
the method comprises the following steps that (1) measurement and control information is sent to secondary interface equipment by emergency line measurement and control equipment in an emergency transformer substation;
and the secondary equipment interface receives the working information and the measurement and control information, integrates the line states of the original transformer substation and the emergency transformer substation, and uploads the integrated data to a dispatching center in the emergency transformer substation.
4. The special secondary interface device for an emergency substation of claim 3, wherein the secondary device interface receives work information and measurement and control information, integrates line states in the original substation and the emergency substation, and comprises:
the secondary interface device integrates the original substation operation data and the emergency line data to match the original dispatching communication model.
5. The special secondary interface device for the emergency substation of claim 2, wherein after the original substation has a power failure, the temporary monitoring device in the emergency substation obtains the working information of the line measurement and control device in the original substation through the secondary interface device, and performs line monitoring based on the working information.
6. The dedicated secondary interface device for emergency substations of claim 3, characterized in that interlocking measures are implemented in emergency substations as well as in original substations.
7. The dedicated secondary interface device for an emergency substation of claim 6, wherein the interlock measures include:
all interlocking functions of the original transformer substation are quitted;
the interlocking is realized in the secondary interface equipment through configuration;
forwarding the remote command through the secondary interface equipment;
the remote command comprises a remote scheduling command and a temporary monitoring device command.
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CN205017103U (en) * | 2015-09-29 | 2016-02-03 | 国网福建省电力有限公司 | Territory protection system stands based on on -vehicle portable transformer substation of 110kV |
CN205178653U (en) * | 2015-11-28 | 2016-04-20 | 国网江西省电力公司赣东北供电分公司 | Long distance transmission device of total certificate of intelligent substation protective apparatus |
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EP2398128A2 (en) * | 2010-06-21 | 2011-12-21 | General Electric Company | System and method for control of power distribution networks |
CN103618388A (en) * | 2013-12-10 | 2014-03-05 | 国家电网公司 | Misoperation-preventive locking realizing system and method in transformation process of substation |
CN104460481A (en) * | 2014-11-17 | 2015-03-25 | 国家电网公司 | Transition connection method and system used in intellectualized reconstruction process of transformer substation |
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