CN108988312B - Electric energy distribution system of secondary connection box of submarine observation network and submarine observation network system - Google Patents
Electric energy distribution system of secondary connection box of submarine observation network and submarine observation network system Download PDFInfo
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- CN108988312B CN108988312B CN201810821182.7A CN201810821182A CN108988312B CN 108988312 B CN108988312 B CN 108988312B CN 201810821182 A CN201810821182 A CN 201810821182A CN 108988312 B CN108988312 B CN 108988312B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/102—Parallel operation of dc sources being switching converters
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- H02J13/0062—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/008—Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
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Abstract
The invention discloses an electric energy distribution system of a secondary connection box of a submarine observation network, which comprises: a constant voltage power supply; the voltage conversion modules are connected with the constant voltage power supply and are controlled by the control module to convert high voltage into low voltage to be output to each output branch circuit; each power reconstruction circuit is connected in parallel to every 2 power output branches and is controlled by the control module to enable each group of power output branches at least comprising 2 power output branches to output power with different specifications; each voltage reconstruction circuit is connected in series with every 2 voltage output branches and is controlled by the control module, so that each group of voltage output branches at least comprising 2 voltage output branches outputs voltages with different specifications; and the control module consists of a plurality of I/O modules, and the single I/O module is respectively used for acquisition of analog signals, output of control signals of the power reconstruction circuit and the voltage reconstruction circuit and transmission of serial port data.
Description
Technical Field
The invention belongs to the field of ocean detection, and particularly relates to an electric energy distribution system of a secondary connection box of a submarine observation network, which can realize output of various voltages or electric energy based on a reconfigurable technology, and a submarine observation power grid system of the electric energy distribution system comprising the secondary connection box.
Background
The reconfigurable concept was first introduced in the field of electronic hardware and was proposed by Geraid Estrin, university of California, USA. The reconfigurable system is to readjust the internal topological structure of the system without changing the system function, and the most direct purpose of reconfiguration is to improve the internal architecture of the system to adapt to the change of the demand, exert the system function to the maximum extent, and prolong the life cycle of the system. Reconfigurable systems have great advantages, including several aspects:
(1) and (3) the versatility is as follows: different environments and tasks can be adapted through the connection mode of the reorganization module;
(2) adaptability: the connection relation of the modules can be adjusted in real time according to the change of the environmental task;
(3) robustness: the modules in the system have equivalent interchangeability, and the damage of individual modules does not influence the normal function of the whole system;
(4) and (3) expandability: the size of the system can be changed by adding or subtracting modules.
Therefore, the reconfigurable system has excellent characteristics of fault tolerance, self-repairability and the like, so that the reconfigurable system can be applied to severe working environments, such as satellites in space in the field of aerospace, electronic components can be damaged due to attack of cosmic rays, the reconfigurable system cannot work normally, manual maintenance is almost impossible, and the reconfigurable device has great advantages in this respect.
In the field of ocean exploration, a submarine observation network which utilizes an armored submarine cable to transmit high-voltage direct current electric energy to the deep sea and converts high-voltage electric energy into low-voltage electric energy at the sea bottom for use by a marine observation instrument has become a revolutionary means of current marine observation. The conventional submarine observation network can stably transmit 10kW electric energy of a shore station to lower-end scientific equipment through a primary connection box system and a secondary connection box electric energy distribution system so as to realize various basic functions of the observation network. However, the secondary docking box power distribution system has certain limitations and instability, which are expressed as follows:
the secondary connection box electric energy distribution system divides the electric energy transmitted by the primary connection box into 8 paths of mutually independent outputs, and each path provides the maximum 200W electric energy. In practical application, 2 to 3 paths of output are often used for 8 paths of output, and other paths of output are suspended, so that the electric energy burden of a certain determined output branch is too large, the aging of an electronic device is accelerated, and the possibility of the fault of the output branch is greatly improved.
Moreover, because 8 output branches are independent, when a certain output branch breaks down, the scientific equipment of this branch can not obtain the electric energy supply, can't work normally, if will switch over the output branch not only will spend a large amount of manpower, materials and financial resources, and more serious is because the scientific equipment can't work normally in a certain time quantum, the submarine observation network can't accurately in time accomplish functions such as observation, control.
In addition, the submarine scientific equipment is more and more abundant and diversified, and the 200W electric energy with fixed output branches may not meet the requirements of some high-power scientific equipment.
Disclosure of Invention
In view of the above, in order to solve the problem that the output end branch of the secondary connection box of the submarine observation network is single and uncontrollable, the invention provides an electric energy distribution system of the secondary connection box of the submarine observation network, which can change the electric energy output topology of the secondary connection box according to the requirement, improve the working efficiency and the service life of the electric energy distribution system, and further provides a submarine observation power grid system of the electric energy distribution system comprising the secondary connection box.
The technical scheme provided by the invention is as follows:
an electrical energy distribution system for a sub-junction box of a sub-sea observation network, comprising:
a constant voltage power supply;
the voltage conversion modules are connected with the constant voltage power supply and are controlled by the control module to convert high voltage into low voltage to be output to each output branch circuit;
each power reconstruction circuit is connected in parallel to every 2 power output branches and is controlled by the control module to enable each group of power output branches at least comprising 2 power output branches to output power with different specifications;
each voltage reconstruction circuit is connected in series with every 2 voltage output branches and is controlled by the control module, so that each group of voltage output branches at least comprising 2 voltage output branches outputs voltages with different specifications;
and the control module consists of a plurality of I/O modules, and the single I/O module is respectively used for acquisition of analog signals, output of control signals of the power reconstruction circuit and the voltage reconstruction circuit and transmission of serial port data.
The electric energy distribution system provided by the invention is a closed-loop switching power supply, and the plurality of power reconstruction circuits are controlled by the control module, so that each group of output branches outputs power and voltage with different specifications to meet the use requirements of various submarine observation devices, and meanwhile, the electric energy burden of each output branch can be avoided from being overlarge, and the stability of the electric energy distribution system of the secondary junction box is improved.
Preferably, the voltage conversion module includes:
the voltage conversion enabling module is triggered by the control module to control the DC/DC converter to convert the high voltage into the low voltage;
and the DC/DC converter is connected with the constant voltage power supply, and is controlled by the voltage conversion enabling module to convert the high voltage output by the constant voltage power supply into low voltage and output the low voltage to a voltage output branch or a power output branch corresponding to the DC/DC converter.
Specifically, each voltage conversion module is arranged on one output branch of the constant voltage power supply and comprises a voltage conversion enabling module and a DC/DC converter, wherein one voltage conversion enabling module controls one DC/DC converter to convert high voltage into fixed low voltage and then output the fixed low voltage.
In order to better control the output specification of each power output branch and each voltage output branch, every 2 power output branches form a group of power output branches, and each group of power output branches is controlled by a power reconstruction circuit to output power with different specifications. Similarly, every 2 voltage output branches form a group of voltage output branches, and each group of voltage output branches is controlled by the voltage reconstruction circuit to output voltages with different specifications.
In order to enable the electric energy distribution system to output power and voltage with different specifications so as to meet the requirements of different ocean observation equipment. The electric energy distribution system comprises power reconstruction circuits and voltage reconstruction circuits, specifically, each power reconstruction circuit comprises a double-pole double-throw relay, the on-off of the double-pole double-throw relay is controlled by the control module, the double-pole double-throw relay is connected with the anodes of 2 power output branches to form a first branch, the anodes of the 2 power output branches are connected simultaneously to form a second branch, the first branch is further connected with a short-circuit protection circuit in series, the second branch is connected with a current collection circuit in series, and any power output branch is further connected with a voltage collection circuit in parallel.
Each voltage reconstruction circuit comprises a current acquisition circuit, a short-circuit protection circuit and a single-pole double-throw relay which are connected in series, the single-pole double-throw relay is controlled to be switched on and switched off by the control module, one end of the current acquisition circuit is connected with the negative electrode of the first voltage output branch, the double-throw end of the single-pole double-throw relay is respectively connected with the negative electrode of the first voltage output branch and the positive electrode of the second voltage output branch, and the first voltage output branch is also connected with the voltage acquisition circuit in parallel.
Specifically, the control module includes:
an ADAM4571 module which is a port server between the RS-232/422/485 and the Ethernet interface and is used for transmitting serial port data to the Ethernet environment;
the ADAM4017P module is used for collecting a voltage signal, a current signal and a temperature signal;
and the ADAM4055 module is used for controlling the on-off of the double-pole double-throw relay and the single-pole double-throw relay.
The control module formed by the three I/O modules can monitor the internal state of the secondary connection box in real time, transmit acquired data to a shore-based upper computer in real time, and control each output branch to output voltage and power with different specifications to realize underwater connection to external loads.
Preferably, the constant voltage power supply of the power distribution system is 375V voltage, each power output branch outputs 200W, 400W, 600W or 800W power, and each voltage output branch outputs 48V, 96V, 144V or 192V voltage. The four specifications of voltage and power can meet the electric energy requirement of most ocean observation equipment.
The seabed observation power grid system comprises a plurality of shore base stations, a composite cable connected to the shore base stations, a primary connection box system connected to the composite cable, and an electric energy distribution system of the seabed observation network secondary connection box, wherein a constant voltage power supply of the electric energy distribution system is the output of the primary connection box system.
Compared with the prior art, the invention has the beneficial effects that:
the electric energy distribution reconfigurable system is applied to the secondary connection box of the submarine observation network, and the hardware layer and the software layer of the system are designed, so that various functions of a power array, current sharing, voltage reconfiguration and the like are realized, and the working efficiency and the service life of the electric energy distribution system are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electric energy distribution system of a secondary junction box of a submarine observation network provided by an embodiment;
fig. 2 is a schematic structural diagram of a secondary junction box including 4 power output branches according to an embodiment;
fig. 3 is a schematic structural diagram of a secondary junction box including 4 voltage output branches according to an embodiment;
FIG. 4 is a schematic diagram of a power reconstruction circuit provided by an embodiment;
FIG. 5 is a schematic diagram of a voltage reconstruction circuit according to an embodiment;
fig. 6 is a schematic structural diagram of a subsea observation power grid system according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural diagram of an electric energy distribution system of a subsea observation network secondary junction box provided in an embodiment, and as shown in fig. 1, the electric energy distribution system provided in this embodiment includes a constant voltage power supply 101, a voltage conversion enabling module 102, a DC/DC converter 103, a power reconstruction circuit 104, a voltage reconstruction circuit 105, and a control module 106.
The constant voltage power supply 101 has a constant voltage of 375V. The voltage conversion enabling module 102 is communicatively connected to the control module 106, and sends a trigger signal to the DC/DC converter 103 after receiving the control signal sent by the control module 106, and the DC/DC converter 103 converts the high voltage into a low voltage and outputs the low voltage after receiving the trigger signal. Specifically, a DC/DC converter 103 is installed on each output branch, and a voltage conversion enabling module 102 is configured for each DC/DC converter, and the DC/DC converter converts a high voltage into a low voltage and outputs the low voltage when triggered by the corresponding voltage conversion enabling module 102.
As shown in fig. 2 and 3, the secondary connection box provided in this embodiment has 8 output branches, where the output branches 1 to 4 are power output branches, and the output branches 5 to 8 are voltage output branches. Wherein, every 2 power output branch road constitute a set of power output branch road, every 2 voltage output branch road constitute a set of voltage output branch road.
The power reconstruction circuit 104 is connected in parallel to every 2 power output branches, and the control module 106 controls each group of power output branches to output 200W, 400W, 600W or 800W power. The specific structure of the power reconstruction circuit 104 is described in detail below, and as shown in fig. 4, the power reconstruction circuit adopts a parallel switch detection circuit composed of a double-pole double-throw relay, that is, the power reconstruction circuit is connected in parallel between the output branch 1 and the output branch 2, the double-pole double-throw relay connects the positive pole (+48V) of the output branch 1 and the positive pole (+48V) of the output branch 2 to form a first branch, and connects the negative pole (GND) of the output branch 1 and the negative pole (GND) of the output branch 2 to form a second branch. The first branch is also provided with a short-circuit protection circuit, the second branch is connected with a current acquisition circuit in series, and any power output branch is also connected with a voltage acquisition circuit in parallel.
When the double-pole double-throw relay works, under the state of single-path output, the double-pole double-throw relay is switched off, the output branch 1 and the output branch 2 work independently, and the maximum output 200W electric energy of the output branch 1 and the output branch 2 is output. In the power reconfiguration state, the control module 106 controls the double-pole double-throw relay to be closed, the output branch 1 is connected with the output branch 2 in parallel, and the maximum output 400W of the output branch 1 and the output branch 2 is electric energy. The operation of the output branches 3 and 4 in the power reconfiguration state in fig. 2 is similar to the above-described process.
The voltage reconstruction circuit 105 is connected in series to each 2 voltage output branches, and the control module 106 controls each group of voltage output branches to output a voltage rate of 48V, 96V, 144V or 192V. The specific structure of the voltage reconstruction circuit 105 is described in detail by taking a group of voltage output branches as an example. As shown in fig. 5, the voltage reconstruction circuit 105 outputs voltages of different specifications by connecting output branches in series. Specifically, the voltage reconstruction circuit 105 includes a current collection circuit, a short-circuit protection circuit, and a single-pole double-throw relay connected in series, one end of the piezoelectric current collection circuit is connected to a negative electrode (GND) of the output branch 5, the remaining two ends of the single-pole double-throw relay are connected to a negative electrode (GND) of the output branch 5 and a positive electrode of the output branch 6, respectively, and the output branch 5 is further connected in parallel to the voltage collection circuit.
In a default state, the single-pole double-throw relay is closed upwards, the output branch 5 and the output branch 6 work independently, and each outputs 48VDC voltage. In the voltage reconstruction state, the single-pole double-throw relay is controlled by the control module 106 to be closed downwards, the negative output end of the output branch 5 is connected with the positive output end of the output branch 6, and the positive output end of the output branch 5 and the negative output end of the output branch 6 output 96VDC voltage. The operation process of the output branch 7 and the output branch 8 in the voltage reconstruction state is the same as that of the output branch 5 and the output branch 6.
The control module 106 in the electric energy distribution system of the secondary junction box is mainly responsible for data acquisition and switch control and is mainly realized by ADAM-4000 series modules. Specifically, the control module 106 selects three modules of ADAM4571, ADAM4017P and ADAM4055, wherein the ADAM4571 module is a port server between the RS-232/422/485 and the ethernet interface, and transmits serial port data to the ethernet environment; the ADAM4017P module is an analog input module of a 16-bit A \ D8 channel and is used for collecting analog input signals such as voltage, current and temperature; the ADAM4055 module is a 16-path isolation digital I/O module and is used for controlling enabling signals of a PR bus, a series switch and a parallel switch.
Before application, the ADAM4571 module needs to perform work such as IP allocation, virtual serial port mapping and the like, and the ADAM401P module and the ADAM4055 module need to perform work such as I/O port allocation, variable statement, internal address allocation and the like.
The upper machine configuration interface in the electric energy distribution system of the secondary connection box uses Simatio CWinCC configuration software of Siemens company, has good openness and flexibility, and WinCC also supports data integration on a plurality of servers such as OPC Server, so that the expansibility of the system is greatly improved, and the system can be suitable for all industrial controllers on almost markets.
The embodiment also provides a submarine observation power grid system, as shown in fig. 6, which includes a plurality of shore base stations, composite cables connected to the shore base stations, primary junction boxes connected to the composite cables, and secondary junction boxes and electric energy distribution systems of the secondary junction boxes connected to the output ends of each primary junction box.
In a submarine observation power grid system, a central industrial Personal Computer (PC) and a shore-based database server exchange data through an OPC (object linking and Embedding for Process control) technology, and a long-term data archiving server is established, so that long-term operation data of a connection box system can be persisted, and quantitative analysis of the operation state of a connection box in a macroscopic time dimension is facilitated. And the central industrial control PC only stores short-term filing data, so that bank-based scientific research personnel can quickly inquire the state and the fault information of the nearest connection box from a human-computer interface. The remote computer of the external network can access the process data in the filing database server through a TCP/IP protocol, and can also use a browser as a container to carry out remote monitoring of a human-computer interface.
The above-mentioned embodiments are intended to illustrate the technical solutions and advantages of the present invention, and it should be understood that the above-mentioned embodiments are only the most preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, additions, equivalents, etc. made within the scope of the principles of the present invention should be included in the scope of the present invention.
Claims (5)
1. An electric energy distribution system for a sub-junction box of a subsea observation network, comprising:
a constant voltage power supply;
the voltage conversion modules are connected with the constant voltage power supply and are controlled by the control module to convert high voltage into low voltage to be output to each output branch circuit;
each power reconstruction circuit is connected in parallel to every 2 power output branches and is controlled by a control module, so that each group of power output branches at least comprising 2 power output branches outputs power with different specifications, wherein each power reconstruction circuit comprises a double-pole double-throw relay which is controlled by the control module to be switched on and off, the double-pole double-throw relay is connected with the anodes of the 2 power output branches to form a first branch and is simultaneously connected with the cathodes of the 2 power output branches to form a second branch, the first branch is also connected in series with a short-circuit protection circuit, the second branch is connected in series with a current acquisition circuit, and any power output branch is also connected in parallel with a voltage acquisition circuit;
each voltage reconstruction circuit is connected in series with every 2 voltage output branches and is controlled by a control module, so that each group of voltage output branches at least comprising 2 voltage output branches outputs voltages with different specifications, wherein each voltage reconstruction circuit comprises a current acquisition circuit, a short-circuit protection circuit and a single-pole double-throw relay which are connected in series, the single-pole double-throw relay is controlled by the control module to be switched on and off, one end of the current acquisition circuit is connected with the negative electrode of the first voltage output branch, the double-throw end of the single-pole double-throw relay is respectively connected with the negative electrode of the first voltage output branch and the positive electrode of the second voltage output branch, and the first voltage output branch is also connected with the voltage acquisition circuit in parallel;
the control module comprises a plurality of I/O modules, wherein a single I/O module is respectively used for acquisition of analog signals, output of control signals of the power reconstruction circuit and the voltage reconstruction circuit and transmission of serial port data, and the control module specifically comprises: an ADAM4571 module which is a port server between the RS-232/422/485 and the Ethernet interface and is used for transmitting serial port data to the Ethernet environment;
the ADAM4017P module is used for collecting a voltage signal, a current signal and a temperature signal;
and the ADAM4055 module is used for controlling the on-off of the double-pole double-throw relay and the single-pole double-throw relay.
2. The subsea observation network secondary docking box power distribution system of claim 1, wherein the voltage conversion module comprises:
the voltage conversion enabling module is triggered by the control module to control the DC/DC converter to convert the high voltage into the low voltage;
and the DC/DC converter is connected with the constant voltage power supply, and is controlled by the voltage conversion enabling module to convert the high voltage output by the constant voltage power supply into low voltage and output the low voltage to a voltage output branch or a power output branch corresponding to the DC/DC converter.
3. The subsea observation network secondary docking pod power distribution system of claim 2, wherein one voltage conversion enabling module controls one DC/DC converter.
4. The subsea observation network secondary docking box power distribution system of claim 1, wherein the constant voltage power supply of the power distribution system is 375V, each power output branch outputs 200W, 400W, 600W, or 800W, and each voltage output branch outputs 48V, 96V, 144V, or 192V.
5. A seabed observation power grid system comprises a plurality of shore base stations, composite cables connected to the shore base stations and primary connection boxes connected to the composite cables, and is characterized by further comprising an electric energy distribution system of the seabed observation network secondary connection box as claimed in any one of claims 1 to 4, wherein a constant voltage power supply of the electric energy distribution system is the output of the primary connection boxes.
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| CN109524952B (en) * | 2018-12-13 | 2020-06-09 | 中国船舶工业***工程研究院 | Underwater connection box 375V direct-current power supply monitoring device |
| CN109831436A (en) * | 2019-01-31 | 2019-05-31 | 中国科学院声学研究所 | Submarine observation network sensor access device and method |
| CN114063698B (en) * | 2021-10-20 | 2024-01-23 | 中航宝胜海洋工程电缆有限公司 | Main line adjusting and protecting circuit and method for constant-voltage submarine observation network |
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| CN104639154A (en) * | 2014-12-18 | 2015-05-20 | 浙江大学 | Voltage conversion system of seafloor observatory network secondary junction box |
| CN104868369B (en) * | 2015-05-21 | 2017-03-01 | 浙江大学 | A kind of junction box in seafloor observation network interconnection device |
| CN205992804U (en) * | 2016-07-28 | 2017-03-01 | 蔚来汽车有限公司 | The family energy-storage system of multivoltage output |
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