CN110072024A - A kind of Dual module modem apparatus and the control system with it - Google Patents

A kind of Dual module modem apparatus and the control system with it Download PDF

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Publication number
CN110072024A
CN110072024A CN201910451910.4A CN201910451910A CN110072024A CN 110072024 A CN110072024 A CN 110072024A CN 201910451910 A CN201910451910 A CN 201910451910A CN 110072024 A CN110072024 A CN 110072024A
Authority
CN
China
Prior art keywords
modem
relay
module
contact
switching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910451910.4A
Other languages
Chinese (zh)
Inventor
李泽时
刘乃齐
曾睿
吴慧贞
黄海恒
叶庆维
叶聪
邹培源
马宇航
钟慧贞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
Guangdong Power Grid Co Ltd
Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Power Grid Co Ltd, Dongguan Power Supply Bureau of Guangdong Power Grid Co Ltd filed Critical Guangdong Power Grid Co Ltd
Priority to CN201910451910.4A priority Critical patent/CN110072024A/en
Publication of CN110072024A publication Critical patent/CN110072024A/en
Pending legal-status Critical Current

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Classifications

    • H02J13/0013
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/062Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/50Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)

Abstract

The invention discloses a kind of Dual module modem apparatus and with its control system, which includes the first modem, second modem, the first power module, second power supply module and switching module;Switching module includes power supply switching circuit, is remotely controlled to open and outputs contact into contact and remote signalling;The output end of power supply switching circuit includes normally closed contact and normal opened contact;One end of first power module is connect with the input terminal of the first modem, and the other end is connect with normally closed contact;One end of second power supply module and the input terminal of second modem connect, and the other end is connect with normal opened contact.The present invention can be when scheduling station monitors plant stand modem failure, starting switching module, which is remotely controlled, in scheduling station exits faulty modem, put into spare modem, to the remote repairing of telemechanical special line channel interrupt when completion modem failure, defect elimination operating efficiency is improved, the scene rush to repair operation of teams and groups is reduced.

Description

A kind of Dual module modem apparatus and the control system with it
Technical field
The present embodiments relate to substation automation system telemechanical fields of communication technology more particularly to a kind of Dual module to modulate Modem device and control system with it.
Background technique
The different communication channels composition redundancy communication modes of two sets of common configuration of the telemechanical communication of substation automation system, two The network in telecontrol channel that is made of respectively electricity secondary safety protection equipment of set communication pattern and by modem and telemechanical The telemechanical special line channel of special line network of channels composition, in the technology applied at present, the modem independent operating at plant stand end, not by Peripheral equipment control.
The telemechanical special line communication outage of substation automation system belongs to common equipment significant deficiency.According to dependency number The reason of result is learnt according to statistics, the telemechanical special line channel interrupt failure of substation automation system includes: telecontrol device failure, plant stand 4 major class such as modem failure, scheduling station demodulator failure and special line channel network failure;Wherein, plant stand modulation /demodulation The main reason for device failure accounts for the 80% of sum, is telemechanical special line channel interrupt failure.
It is provided according to related management, equipment significant deficiency need to arrange teams and groups personnel that substation field is gone to rob when occurring Operation is repaired, repairing operation time-consuming includes travel time, time and in-situ processing time, time-consuming for defect elimination;Not only repair work It not only will increase the operating cost of enterprise, also will increase the work load of teams and groups, base.
Summary of the invention
The present invention provides a kind of Dual module modem apparatus and the control system with it, to solve the prior art It is insufficient.
To achieve the above object, the present invention provides technical solution below:
In a first aspect, the embodiment of the present invention provides a kind of Dual module modem apparatus, including the first modem, Second modem, the first power module, second power supply module and switching module;
The switching module includes power supply switching circuit, is remotely controlled to open and outputs contact into contact and remote signalling;
The input terminal of the power supply switching circuit is power input, and the output end of the power supply switching circuit includes normally closed Contact and normal opened contact;
One end of first power module is connect with the input terminal of first modem, the other end and it is described often Close contact connection;
One end of the second power supply module is connect with the input terminal of the second modem, the other end and it is described often Open contact connection;
The output end of first modem and the output end of the second modem simultaneously connect;
Contact is opened in the remote control and remote signalling outputs contact and outputs contact and distant with the remote control on public measure and control device respectively Letter is opened to be connected into contact;
The power supply switching circuit is used to receive the switching signal from the public measure and control device, and according to the switching First modem is switched to the state of exiting by investment state by signal, and is adjusted according to the switching signal by described second Modulator-demodulator is switched to investment state by stand-by state;
The power supply switching circuit is also used to for the working condition of the second modem being sent to remote signals The public measure and control device.
Further, in the Dual module modem apparatus, the switching module is provided with circuit involution button.
Further, in the Dual module modem apparatus, the power supply switch circuit includes the first relay circuit With the second relay circuit;
First relay circuit is for receiving the switching signal, and according to switching signal control control described the Two relay circuits are connect with the power input, so that the second modem is switched to investment shape by stand-by state State.
Further, in the Dual module modem apparatus, first relay circuit includes the first relay, institute Stating the first relay includes the first common end, the first normal opened contact corresponding with first common end, the second common end and institute State corresponding second normal opened contact in the second common end;
First common end and the second common end are connect with the power input, the coil of first relay It opens with the remote control and is connect into contact and first normal opened contact respectively, another described second normal opened contact and described second Relay circuit connection;
When the remote control is opened into junction closure, the coil of first relay obtains electric, first common end and institute The first normal opened contact closure is stated, forms self-holding circuit, and second common end and second normal opened contact are closed.
Further, in the Dual module modem apparatus, second relay circuit includes the second relay, the Three relays and the 4th relay;
The coil of second relay, third relay and the 4th relay is connect with second normal opened contact;
Behind second common end and second normal opened contact closure, second relay, third relay Common end is connect with the power input, and the normally closed contact of second relay and third relay is with described first The input terminal of power module connects, the normal opened contact of second relay and third relay with the second power supply module Input terminal connection;
Second common end and second normal opened contact closure after, the common end of the 4th relay with it is described The remote signalling power supply common end of public measure and control device connects, and contact company is outputed in the normal opened contact of the 4th relay and the remote signalling It connects, and then opens with the remote signalling on the public measure and control device and connect into contact.
Further, in the Dual module modem apparatus, the analog channel of first modem open into It opens into and connects with the analog channel of the second modem, the modulation output and described second of first modem The modulation of modem is exported and is connect.
Second aspect, the embodiment of the present invention provide a kind of control system of Dual module modem apparatus, including scheduling Main website, telecontrol device, public measure and control device and Dual module modem apparatus as described in relation to the first aspect;
The scheduling station is connect by network in telecontrol channel with the telecontrol device, and telemechanical special line channel and described pair are passed through The connection of module modem apparatus;The public measure and control device respectively with the telecontrol device and Dual module modem apparatus Connection;
The scheduling station is used to send switching command to the telecontrol device by the network in telecontrol channel;
The switching command is exported to the public observing and controlling and is filled for receiving the switching command by the telecontrol device It sets;
The public measure and control device is used to generate switching signal according to the switching command, and the switching signal is exported To the Dual module modem apparatus;
The Dual module modem apparatus is used to be completed according to the switching signal to first modem With the switching of the working condition of second modem;And it is used for first modem and second modem Working condition be sent to the public measure and control device with remote signals;
The public measure and control device is also used to receive the remote signals, and generates indication signal according to the remote signals It is sent to the telecontrol device;
The telecontrol device is also used to receive the indication signal, and by the network in telecontrol channel by the indication signal It is sent to the scheduling station.
Further, the control system of the Dual module modem apparatus further includes secondary security device;
The secondary security device is arranged between the scheduling station and telecontrol device, for receiving the scheduling station hair Switching command out carries out safety inspection to the switching command, and will be sent to by the switching command of safety inspection The telecontrol device.
A kind of Dual module modem apparatus provided in an embodiment of the present invention and the control system with it, can adjust When degree main website monitors plant stand modem failure, remote control starting switching module exits faulty modem, puts into spare Modem improves defect elimination operation effect to the remote repairing of telemechanical special line channel interrupt when completing modem failure Rate reduces the scene rush to repair operation of teams and groups.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art To obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram for Dual module modem apparatus that the embodiment of the present invention one provides;
Fig. 2 is the structural schematic diagram of power supply switch circuit in the embodiment of the present invention one;
Fig. 3 is a kind of structural representation of the control system of Dual module modem apparatus provided by Embodiment 2 of the present invention Figure.
Appended drawing reference:
First modem 10, second modem 20, the first power module 30, second power supply module 40, switching Module 50;
Scheduling station 100, telecontrol device 200, public measure and control device 300, Dual module modem apparatus 400, secondary peace Anti- equipment 500.
Specific embodiment
To enable the purpose of the present invention, feature, advantage more obvious and understandable, implement below in conjunction with the present invention Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that reality disclosed below Applying example is only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field is common Technical staff's all other embodiment obtained without making creative work belongs to the model that the present invention protects It encloses.
In the description of the present invention, it is to be understood that, when a component is considered as " connection " another component, it can To be directly to another component or may be simultaneously present the component being centrally located.When a component is considered as " setting Set " another component, it, which can be, is set up directly on another component or may be simultaneously present the component being centrally located.
In addition, the indicating positions such as term " length " " short " "inner" "outside" or positional relationship for the orientation that is shown based on attached drawing or Person's positional relationship is merely for convenience of the description present invention, rather than the device or original part of indication or suggestion meaning must have this Specific orientation is operated with specific orientation construction, should not be understood as limitation of the invention with this.
Embodiment one
It is learnt according to the survey data that plant stand modem failure is replaced, the main reason for plant stand modem failure Be device power module due to long-play ageing failure, replacing power module or modem can complete 90% modem failure defect elimination, to solve the defect elimination of 90% plant stand telemechanical special line channel failure.
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
Fig. 1~2 are please referred to, the embodiment of the present invention provides a kind of Dual module modem apparatus, includes the first modulation /demodulation Device 10, second modem 20, the first power module 30, second power supply module 40 and switching module 50;
The switching module 50 includes power supply switching circuit, is remotely controlled to open and outputs contact into contact and remote signalling;
The input terminal of the power supply switching circuit is power input, and the output end of the power supply switching circuit includes normally closed Contact and normal opened contact;
One end of first power module 30 is connect with the input terminal of first modem 10, the other end and institute State normally closed contact connection;
One end of the second power supply module 40 is connect with the input terminal of the second modem 20, the other end and institute State normal opened contact connection;
The output end of the output end of first modem 10 and the second modem 20 simultaneously connects;
Contact is opened in the remote control and remote signalling outputs contact and outputs contact and distant with the remote control on public measure and control device respectively Letter is opened to be connected into contact;
The power supply switching circuit is used to receive the switching signal from the public measure and control device, and according to the switching First modem 10 is switched to the state of exiting by investment state by signal, and according to the switching signal by described second Modem 20 is switched to investment state by stand-by state;
The power supply switching circuit is also used to send the working condition of the second modem 20 with remote signals To the public measure and control device.
It should be noted that the present invention is using respectively independent two modulation /demodulation powered using individual power module Device controls the investment of two power modules by switching module 50 and exits, thus the investment of two modems of control and It exits.Under normal circumstances, the first power module 30 it is electric, the first modem 10 is in investment state, at the same time second 40 power loss of power module, second modem 20 are in stand-by state.When there is outage in telemechanical special line channel, scheduling Main website remote control starting switching module 50 exits the first power module 30, puts into second power supply module 40, so that the second modulation Demodulator 20 switchs to operating status by stand-by state, and the first modem 10 is switched to exit state by operating status.
Preferably, the switching module 50 is provided with circuit involution button.
The power supply switch circuit includes the first relay circuit and the second relay circuit;
First relay circuit is for receiving the switching signal, and according to switching signal control control described the Two relay circuits are connect with the power input, so that the second modem 20 is switched to investment by stand-by state State.
As shown in Fig. 2, first relay circuit includes the first relay, first relay includes first public It is end and corresponding first normal opened contact in first common end, the second common end, corresponding with second common end second normal Open contact;(the first common end and the first normal opened contact are indicated with K1 in Fig. 2, indicate that the second common end and second normally opened connects with K1 ' Point)
First common end and the second common end are connect with the power input, the coil of first relay Contact (indicating in Fig. 2 with K0) is opened and first normal opened contact is connect with the remote control respectively, another is described second normal Contact is opened to connect with second relay circuit;
When the remote control is opened into junction closure, the coil of first relay obtains electric, first common end and institute The first normal opened contact closure is stated, forms self-holding circuit, and second common end and second normal opened contact are closed.
It should be noted that the operating voltage of first relay is direct current 110V/220V, the remote control is opened into contact The time of closure is 200ms;K0 ' indicates circuit involution button in Fig. 2, for teams and groups to the return behaviour in circuit when in-situ processing Make.
Preferably, second relay circuit includes the second relay, third relay and the 4th relay;
The coil of second relay, third relay and the 4th relay is connect with second normal opened contact;
Behind second common end and second normal opened contact closure, second relay, third relay Common end is connect with the power input, and the normally closed contact of second relay and third relay is with described first The input terminal of power module 30 connects, the normal opened contact of second relay and third relay with the second source mould The input terminal of block 40 connects;
Second common end and second normal opened contact closure after, the common end of the 4th relay with it is described The remote signalling power supply common end of public measure and control device connects, and contact company is outputed in the normal opened contact of the 4th relay and the remote signalling It connects, and then opens with the remote signalling on the public measure and control device and connect into contact.
It should be noted that the operating voltage of second relay, third relay and the 4th relay is direct current 110V/220V;Second relay, third relay common end connect power input (direct current 110V/220V) respectively Anode and cathode, the normally closed contact of the second relay connect the input anode of 10 first power module 30 of the first modem, the Two relay normally open contacts connect the input anode of 20 second power supply module 40 of second modem;Third relay normally closed contact The input cathode of 10 first power module 30 of the first modem is connect, third relay normally open contact connects second modem The input cathode of 20 second power supply modules 40;State after 4th relay puts into operation for second modem 20 is defeated Out.
When scheduling station is remotely controlled K0 closure, first actuating of relay is formed simultaneously self-holding circuit, after K1 ' is connected, second Relay, third relay energized action disconnect normally closed contact, closure normal opened contact, complete the first modem 10 first Power module 30 exit and the investment of 20 second power supply module 40 of second modem.4th relay simultaneously operation, Normal opened contact closure, will be sent in switching action situation to scheduling station by public measure and control device.
Preferably, the analog channel of first modem 10 is opened into the simulation with the second modem 20 Channel is opened into and is connect, and the modulation output of first modem 10 and the modulation of the second modem 20 export simultaneously It connects.
A kind of Dual module modem apparatus provided in an embodiment of the present invention can monitor plant stand tune in scheduling station When modulator-demodulator failure, remote control starting switching module exits faulty modem, puts into spare modem, completes modulation To the remote repairing of telemechanical special line channel interrupt when demodulator failure, defect elimination operating efficiency is improved, reduces the scene of teams and groups Repair operation.
Embodiment two
Referring to FIG. 3, the embodiment of the present invention provides a kind of control system of Dual module modem apparatus, including scheduling Main website 100, telecontrol device 200, public measure and control device 300 and the Dual module modem apparatus 400 as described in embodiment one;
The scheduling station 100 is connect by network in telecontrol channel with the telecontrol device 200, by telemechanical special line channel and The Dual module modem apparatus 400 connects;The public measure and control device 300 respectively with the telecontrol device 200 and bimodulus Block modem apparatus 400 connects;
The scheduling station 100 is used to send switching command to the telecontrol device 200 by the network in telecontrol channel;
The telecontrol device 200 exports the switching command to the public observing and controlling for receiving the switching command Device 300;
The public measure and control device 300 is used to generate switching signal according to the switching command, and by the switching signal It exports to the Dual module modem apparatus 400;
The Dual module modem apparatus 400 is used to be completed according to the switching signal to first modulation /demodulation The switching of the working condition of device and second modem;And it is used for first modem and the second modulation /demodulation The working condition of device is sent to the public measure and control device 300 with remote signals;
The public measure and control device 300 is also used to receive the remote signals, and is generated and indicated according to the remote signals Signal is sent to the telecontrol device 200;
The telecontrol device 200 is also used to receive the indication signal, and by the network in telecontrol channel by the instruction Signal is sent to the scheduling station 100.
Preferably, the control system of the Dual module modem apparatus 400 further includes secondary security device 500;
The secondary security device 500 is arranged between the scheduling station 100 and telecontrol device 200, described for receiving The switching command that scheduling station 100 issues carries out safety inspection to the switching command, and will be by cutting described in safety inspection It changes instruction and is sent to the telecontrol device 200.
A kind of control system of Dual module modem apparatus provided in an embodiment of the present invention, can supervise in scheduling station When measuring plant stand modem failure, remote control starting switching module exits faulty modem, puts into spare modulation /demodulation Device improves defect elimination operating efficiency, reduces to the remote repairing of telemechanical special line channel interrupt when completing modem failure The scene rush to repair operation of teams and groups.
So far, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations;Although referring to aforementioned reality Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each Technical solution documented by embodiment is modified or equivalent replacement of some of the technical features;And these are modified Or replacement, the spirit and scope for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.

Claims (8)

1. a kind of Dual module modem apparatus, which is characterized in that including the first modem, second modem, First power module, second power supply module and switching module;
The switching module includes power supply switching circuit, is remotely controlled to open and outputs contact into contact and remote signalling;
The input terminal of the power supply switching circuit is power input, and the output end of the power supply switching circuit includes normally closed contact And normal opened contact;
One end of first power module is connect with the input terminal of first modem, and the other end normally closed connects with described Point connection;
One end of the second power supply module is connect with the input terminal of the second modem, and the other end normally opened connects with described Point connection;
The output end of first modem and the output end of the second modem simultaneously connect;
Contact is opened in the remote control and remote signalling outputs that contact outputs contact with the remote control on public measure and control device respectively and remote signalling is opened Enter contact connection;
The power supply switching circuit is used to receive the switching signal from the public measure and control device, and according to the switching signal First modem is switched to the state of exiting by investment state, and according to the switching signal by second modulatedemodulate Device is adjusted to be switched to investment state by stand-by state;
The power supply switching circuit is also used to for the working condition of the second modem being sent to remote signals described Public measure and control device.
2. Dual module modem apparatus according to claim 1, which is characterized in that the switching module is provided with back Road involution button.
3. Dual module modem apparatus according to claim 2, which is characterized in that the power supply switch circuit includes First relay circuit and the second relay circuit;
First relay circuit for receiving the switching signal, and according to switching signal control control described second after Circuit is connect with the power input, so that the second modem is switched to investment state by stand-by state.
4. Dual module modem apparatus according to claim 3, which is characterized in that first relay circuit includes First relay, first relay include the first common end, the first normal opened contact corresponding with first common end, the Two common ends, the second normal opened contact corresponding with second common end;
First common end and the second common end are connect with the power input, the coil difference of first relay It opens with the remote control and is connect into contact and first normal opened contact, another described second normal opened contact and second relay Circuit connection;
When the remote control is opened into junction closure, the coil of first relay obtains electric, first common end and described the One normal opened contact closure forms self-holding circuit, and second common end and second normal opened contact are closed.
5. Dual module modem apparatus according to claim 4, which is characterized in that second relay circuit includes Second relay, third relay and the 4th relay;
The coil of second relay, third relay and the 4th relay is connect with second normal opened contact;
Second common end and second normal opened contact closure after, second relay, third relay it is public End connect with the power input, the normally closed contact of second relay and third relay with first power supply The input terminal of module connects, and the normal opened contact of second relay and third relay is defeated with the second power supply module Enter end connection;
Second common end and second normal opened contact closure after, the common end of the 4th relay with it is described public The remote signalling power supply common end of measure and control device connects, and the normal opened contact of the 4th relay is outputed contact with the remote signalling and connect, And then it opens with the remote signalling on the public measure and control device and is connect into contact.
6. Dual module modem apparatus according to claim 5, which is characterized in that first modem Analog channel, which is opened, to be opened into and connects into the analog channel with the second modem, and the modulation of first modem is defeated It exports and connects with the modulation of the second modem out.
7. a kind of control system of Dual module modem apparatus, which is characterized in that including scheduling station, telecontrol device, public Measure and control device and Dual module modem apparatus as described in any one of claims 1 to 6;
The scheduling station is connect by network in telecontrol channel with the telecontrol device, and telemechanical special line channel and the Dual module are passed through Modem apparatus connection;The public measure and control device connects with the telecontrol device and Dual module modem apparatus respectively It connects;
The scheduling station is used to send switching command to the telecontrol device by the network in telecontrol channel;
The telecontrol device exports the switching command to the public measure and control device for receiving the switching command;
The public measure and control device is used to generate switching signal according to the switching command, and the switching signal is exported to institute State Dual module modem apparatus;
The Dual module modem apparatus is used to be completed according to the switching signal to first modem and the The switching of the working condition of two modems;And for by the work of first modem and second modem Make state and is sent to the public measure and control device with remote signals;
The public measure and control device is also used to receive the remote signals, and generates indication signal according to the remote signals and send To the telecontrol device;
The telecontrol device is also used to receive the indication signal, and is sent the indication signal by the network in telecontrol channel To the scheduling station.
8. the control system of Dual module modem apparatus according to claim 7, which is characterized in that further include secondary Security device;
The secondary security device is arranged between the scheduling station and telecontrol device, for receiving the scheduling station sending Switching command carries out safety inspection to the switching command, and described by being sent to by the switching command of safety inspection Telecontrol device.
CN201910451910.4A 2019-05-28 2019-05-28 A kind of Dual module modem apparatus and the control system with it Pending CN110072024A (en)

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CN201910451910.4A CN110072024A (en) 2019-05-28 2019-05-28 A kind of Dual module modem apparatus and the control system with it

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110571935A (en) * 2019-09-26 2019-12-13 国网湖南省电力有限公司 Remote locking method for station spare power automatic switching device
CN110749796A (en) * 2019-11-22 2020-02-04 国网四川省电力公司检修公司 Remote signaling test multiplexing device and operation method for electric power integrated automation system of transformer substation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207968500U (en) * 2017-12-08 2018-10-12 深圳供电局有限公司 101 passageway remote self-loopa testing arrangement
CN208209631U (en) * 2018-05-22 2018-12-07 广东电网有限责任公司 Channel switching device and telemechanical system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207968500U (en) * 2017-12-08 2018-10-12 深圳供电局有限公司 101 passageway remote self-loopa testing arrangement
CN208209631U (en) * 2018-05-22 2018-12-07 广东电网有限责任公司 Channel switching device and telemechanical system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110571935A (en) * 2019-09-26 2019-12-13 国网湖南省电力有限公司 Remote locking method for station spare power automatic switching device
CN110571935B (en) * 2019-09-26 2021-11-30 国网湖南省电力有限公司 Remote locking method for station spare power automatic switching device
CN110749796A (en) * 2019-11-22 2020-02-04 国网四川省电力公司检修公司 Remote signaling test multiplexing device and operation method for electric power integrated automation system of transformer substation

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