CN113013907A - Quick response energy storage device for distribution network - Google Patents
Quick response energy storage device for distribution network Download PDFInfo
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- CN113013907A CN113013907A CN202110234985.4A CN202110234985A CN113013907A CN 113013907 A CN113013907 A CN 113013907A CN 202110234985 A CN202110234985 A CN 202110234985A CN 113013907 A CN113013907 A CN 113013907A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 62
- 238000009826 distribution Methods 0.000 title claims abstract description 35
- 230000004044 response Effects 0.000 title claims abstract description 22
- 238000004891 communication Methods 0.000 claims abstract description 27
- 238000007599 discharging Methods 0.000 claims abstract description 16
- 239000012188 paraffin wax Substances 0.000 claims description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005304 joining Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012806 monitoring device Methods 0.000 abstract 3
- 230000001960 triggered effect Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to the technical field of distribution network scheduling, in particular to a quick response energy storage device for a distribution network, which comprises a plurality of user side energy storage devices and a control center, wherein the user side energy storage devices are arranged at a user service line and are connected with the service line, each user side energy storage device comprises a distribution network monitoring device, a charging and discharging device, a communication unit and a control unit, the distribution network monitoring device is connected with a service line live wire, the voltage of the service line live wire is monitored, the charging and discharging device is connected with the service line live wire, the distribution network monitoring device, the charging and discharging device and the communication unit are all connected with the control unit, and the communication unit is in communication connection with the control center. The substantial effects of the invention are as follows: the user side energy storage equipment provides quick response load adjustment, is closest to the user, provides load adjustment for a single user very conveniently and effectively, and realizes peak clipping and valley filling, so that the operation of the power distribution network is more stable.
Description
Technical Field
The invention relates to the technical field of distribution network scheduling, in particular to a quick response energy storage device for a distribution network.
Background
With the development of new energy, fossil energy with regulation capacity under the condition of energy double control is limited in development, the occupation ratio is reduced, and the autonomous regulation capacity is rapidly occupied. In a traditional mode, the safety and the efficiency have natural contradictions, the efficiency optimization is accompanied with the reduction of the safety margin, and the safety stability level is increased to reduce the operation efficiency. The power grid operation is squeezed by the source, the grid, the load and the storage, the space for the power grid to move and adjust is sharply reduced, the power grid development mode needs to be changed urgently, a small amount of centralized adjustment is changed into massive dispersed response, adjustable flexible resources are greatly adjusted, an elastic power grid is constructed, and safety and efficiency are improved. And the energy storage equipment deployed in the power distribution network can effectively improve the interaction level of the power grid source network charge storage, ensure the safe operation of the power distribution network and improve the operation efficiency of the power distribution network.
Chinese patent CN110570047A, published 2019, 12 months and 13 days, a system and method for configuring energy storage capacity at user side, the system comprising: the system comprises a parameter input module, a scheme generation module and a result display module; the parameter input module is used for inputting parameters; the scheme generation module obtains a configuration result of the energy storage capacity through an optimization algorithm according to the parameters input by the parameter input module; and the result display module simulates the running state of the energy storage system according to the configuration result obtained by the scheme generation module and displays a result curve. The method comprises the following steps: s1: determining a typical daily load; s2: establishing an objective function; s3: establishing a constraint condition of an objective function; s4: and solving the objective function to obtain an optimal configuration result of the energy storage capacity of the energy storage system at the user side. Although the technical scheme can improve the efficiency of energy storage system capacity configuration and simplify the procedure of energy storage system capacity configuration, the overall coordination and scheduling in the distribution network are inconvenient.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the technical problem that a user side is lack of equipment conforming and adjusting is solved at present. A fast response energy storage device for a distribution network is provided. The device is deployed at a user side, responds to the load change of the user side, improves the load change of the user side and improves the running stability of a distribution network.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a quick response energy memory for joining in marriage net, includes a plurality of user side energy storage equipment and control center, a plurality of user side energy storage equipment deploys and goes into house line department at the user, user side energy storage equipment with go into house line connection, user side energy storage equipment is including joining in marriage net monitoring facilities, charging and discharging equipment, communication unit and the control unit, join in marriage net monitoring facilities and be connected with the live wire of going into house line, the voltage of monitoring income house line live wire, charging and discharging equipment is connected with the live wire of going into house line, joins in marriage net monitoring facilities, charging and discharging equipment and communication unit and all is connected with the control unit, communication unit and control center communication connection. The user side energy storage equipment provides quick response load adjustment, is closest to the user, provides load adjustment for a single user very conveniently and effectively, and realizes peak clipping and valley filling, so that the operation of the power distribution network is more stable.
Preferably, the charging and discharging equipment comprises a shell, a charging unit, an inversion unit, a voltage detection unit, two electronic switches and a battery, wherein the control unit, the charging unit, the inversion unit, a communication unit and the battery are all installed in the shell, the charging unit and the inversion unit are respectively connected with a live wire of a house through the electronic switches, the charging unit and the inversion unit are all connected with a positive electrode of the battery, a negative electrode of the battery is connected with a zero line of the house, the voltage detection unit detects voltages at two ends of the battery, the charging unit, the inversion unit, the communication unit, the voltage detection unit and the electronic switches are all connected with the control unit, and the communication unit is in communication connection with a control center. The contravariant unit can be with the electric energy conversion in the battery for the alternating current for the user power supply, and the charging unit can charge for the battery, realizes carrying out the effect of finely tuning fast to user's load, and although every user side energy storage equipment's capacity is limited, all user side energy storage equipment can provide considerable regulation capacity in the distribution network, help the steady operation of distribution network.
Preferably, the user side energy storage equipment further comprises a passive fire extinguisher, the passive fire extinguisher is installed in the shell and comprises a high-pressure gas tank and a trigger plug, high-pressure fire extinguishing gas is filled in the high-pressure gas tank, and the trigger plug is installed at an outlet of the high-pressure gas tank. When the temperature is higher, the trigger plug is opened, high-pressure fire extinguishing gas is released, the temperature in the energy storage equipment at the user side is reduced or the fire in the energy storage equipment at the user side is extinguished, and after the trigger plug is opened, a user needs to replace a passive fire extinguisher or replace the whole energy storage equipment at the user side.
Preferably, the trigger plug comprises a sliding tongue and paraffin, an inner thread is processed on the inner wall of the tank nozzle of the high-pressure gas tank, the sliding tongue is provided with an outer thread matched with the inner thread of the tank nozzle, the sliding tongue is in threaded connection with the tank nozzle, a gap is formed between the outer thread of the sliding tongue and the inner thread of the tank nozzle, and the paraffin is filled between the outer thread of the sliding tongue and the inner thread of the tank nozzle. The thread lead angle of the external thread of the sliding tongue and the internal thread of the tank nozzle is larger than a set threshold value. The paraffin is filled between the external thread of the sliding tongue and the internal thread of the tank nozzle, so that the relative movement between the external thread of the sliding tongue and the internal thread of the tank nozzle is prevented, and the high-pressure gas tank is blocked. When the temperature rises, the paraffin becomes soft and can not block the relative movement between the external thread of the sliding tongue and the internal thread of the tank nozzle until the paraffin is soft enough, and the external thread of the sliding tongue and the internal thread of the tank nozzle are separated gradually under the push of high-pressure fire extinguishing gas, so that the high-pressure fire extinguishing gas in the high-pressure gas tank is released.
Preferably, the trigger plug further comprises two contact heads, the two contact heads are embedded on the tank mouth and are in conductive connection, and the two contact heads are connected between the battery and the charging unit in series. The contact can generate heat after being electrified, and when the current is larger, the heat productivity is large enough, so that the temperature of the tank nozzle is increased, and the paraffin is softened. When fault current occurs, fire extinguishing protection is triggered. After the fire protection is triggered, the user should replace the user-side energy storage device.
Preferably, the trigger plug further comprises a conducting ring, the conducting ring is sleeved outside the tank nozzle, and the two contact heads are both abutted to the conducting ring. The conductive ring can increase conductivity.
Preferably, the trigger plug further comprises a silicon ring, the silicon ring is sleeved outside the tank nozzle, and the conductive ring is sleeved outside the silicon ring. The silicon ring can insulate the conducting ring from the tank nozzle, and can effectively transfer heat generated by the conducting ring, so that the temperature of the tank nozzle rises, and when fault current occurs, the generated heat is enough to soften paraffin.
The substantial effects of the invention are as follows: the user side energy storage equipment provides quick-response load adjustment, is closest to the user, provides load adjustment for single-user users very conveniently and effectively, and realizes peak clipping and valley filling so that the operation of the power distribution network is more stable; although each user-side energy storage device has a limited capacity, all user-side energy storage devices in the power distribution network can provide considerable conditioning capacity, which contributes to stable operation of the power distribution network.
Drawings
Fig. 1 is a schematic diagram of a fast response energy storage device according to an embodiment.
Fig. 2 is a schematic structural diagram of a fast response energy storage device according to an embodiment.
Fig. 3 is a schematic structural diagram of a charging and discharging device according to an embodiment.
Fig. 4 is a schematic view of a passive fire extinguisher according to an embodiment.
Wherein: 100. 200, user side energy storage equipment, 201, a control unit, 202, a charging unit, 203, a battery, 204, a shell, 205, an inversion unit, 206, a passive fire extinguisher, 2061, high-pressure fire extinguishing gas, 2062, a high-pressure gas tank, 2063, a contact head, 2064, a sliding tongue, 2065, paraffin, 2066, a cover net, 2067 and a conducting ring.
Detailed Description
The following provides a more detailed description of the present invention, with reference to the accompanying drawings.
The first embodiment is as follows:
the utility model provides a quick response energy memory for joining in marriage net, as shown in fig. 1, including a plurality of user side energy storage equipment 200 and control center, a plurality of user side energy storage equipment 200 deploys in user service line department, user side energy storage equipment 200 is connected with service line, as shown in fig. 2, user side energy storage equipment 200 is including joining in marriage net monitoring facilities, charging and discharging equipment, communication unit and the control unit 201, join in net monitoring facilities and being connected with service line live wire, monitor the voltage of service line live wire, charging and discharging equipment is connected with service line live wire, join in net monitoring facilities, charging and discharging equipment and communication unit all are connected with the control unit 201, communication unit and control center communication connection. The user side energy storage device 200 can provide quick-response load adjustment for the power supply area of the transformer 100, is closest to a user, provides load adjustment for a single user very conveniently and effectively, and realizes peak clipping and valley filling, so that the operation of the power distribution network is more stable.
As shown in fig. 3, the charging and discharging device includes a housing 204, a charging unit 202, an inverting unit 205, a voltage detecting unit, two electronic switches, and a battery 203, the control unit 201, the charging unit 202, the inverting unit 205, a communication unit, and the battery 203 are all installed in the housing 204, the charging unit 202 and the inverting unit 205 are respectively connected to a live wire of a house through the electronic switches, the charging unit 202 and the inverting unit 205 are both connected to a positive electrode of the battery 203, a negative electrode of the battery 203 is connected to a zero line of the house, the voltage detecting unit detects voltages at two ends of the battery 203, the charging unit 202, the inverting unit 205, the communication unit, the voltage detecting unit, and the electronic switches are all connected to the control unit 201, and the communication unit is in. The inversion unit 205 can convert the electric energy in the battery 203 into alternating current to supply power to the user, the charging unit 202 can charge the battery 203, the effect of quickly fine-tuning the load of the user is achieved, and although the capacity of each user-side energy storage device 200 is limited, all user-side energy storage devices 200 in the power distribution network can provide considerable adjusting capacity, and stable operation of the power distribution network is facilitated.
As shown in fig. 4, the energy storage apparatus 200 on the user side further includes a passive fire extinguisher 206, the passive fire extinguisher 206 is installed in the housing 204, the passive fire extinguisher 206 includes a high pressure gas tank 2062 and a trigger plug, the high pressure gas tank 2062 is filled with a high pressure fire extinguishing gas 2061, and the trigger plug is installed at an outlet of the high pressure gas tank 2062. A cover net 2066 is installed at the mouth of the high-pressure gas tank 2062. When the temperature is high, the trigger plug is opened to release the high-pressure fire extinguishing gas 2061, thereby lowering the temperature in the energy storage device 200 on the user side or extinguishing the fire in the energy storage device 200 on the user side, and when the trigger plug is opened, the user should replace the passive fire extinguisher 206 or the entire energy storage device 200 on the user side. The trigger plug comprises a sliding tongue 2064 and paraffin 2065, an inner thread is machined on the inner wall of the tank nozzle of the high-pressure gas tank 2062, the sliding tongue 2064 is provided with an outer thread matched with the inner thread of the tank nozzle, the sliding tongue 2064 is in threaded connection with the tank nozzle, a gap is formed between the outer thread of the sliding tongue 2064 and the inner thread of the tank nozzle, and the paraffin 2065 is filled between the outer thread of the sliding tongue 2064 and the inner thread of the tank nozzle. The lead angle of the external threads of the slip tongue 2064 and the internal threads of the canister nozzle is greater than a set threshold. The paraffin 2065 is filled between the external thread of the sliding tongue 2064 and the internal thread of the canister nozzle, so that the relative movement between the external thread of the sliding tongue 2064 and the internal thread of the canister nozzle is prevented, and the high-pressure gas canister 2062 is blocked. When the temperature rises, the paraffin 2065 softens and can no longer block the relative movement between the external thread of the slip tongue 2064 and the internal thread of the canister nozzle until the paraffin 2065 is sufficiently soft and the external thread of the slip tongue 2064 and the internal thread of the canister nozzle gradually disengage under the urging of the high-pressure fire extinguishing gas 2061, thereby releasing the high-pressure fire extinguishing gas 2061 in the high-pressure gas canister 2062.
The trigger plug further comprises two contacts 2063, the two contacts 2063 being mounted on the mouth of the canister, the two contacts 2063 being electrically connected, the two contacts 2063 being connected in series between the battery 203 and the charging unit 202. The contact 2063 generates heat when energized, and when the current is large, the heat generation is large enough to raise the temperature of the tank nozzle, so that the paraffin 2065 is softened. When fault current occurs, fire extinguishing protection is triggered. After the fire protection is triggered, the user should replace the user-side energy storage device 200. The trigger plug further comprises a conductive ring 2067, the conductive ring 2067 is sleeved outside the can mouth, and both contact heads 2063 are abutted against the conductive ring 2067. The conductive ring 2067 can increase the conductivity. The trigger plug further comprises a silicon ring, the silicon ring is sleeved outside the tank nozzle, and the conducting ring 2067 is sleeved outside the silicon ring. The silicon ring insulates the conductive ring 2067 from the nozzle and effectively transfers heat generated by the conductive ring 2067 so that the nozzle rises in temperature and generates heat sufficient to soften the paraffin 2065 when a fault current occurs.
The beneficial effect of this embodiment is: the user side energy storage device 200 provides quick-response load adjustment, is closest to the user, provides load adjustment for single-user users very conveniently and effectively, realizes peak clipping and valley filling, and enables the operation of the power distribution network to be more stable; although each customer-side energy storage device 200 has limited capacity, all of the customer-side energy storage devices 200 in the power distribution grid can provide considerable conditioning capacity, contributing to stable operation of the power distribution grid.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the spirit of the invention as set forth in the claims.
Claims (7)
1. A fast response energy storage device for distribution network is characterized in that,
including a plurality of user side energy storage equipment and control center, a plurality of user side energy storage equipment deploys and goes into house line department at the user, user side energy storage equipment with go into house line connection, user side energy storage equipment is including joining in marriage net monitoring facilities, charging and discharging equipment, communication unit and the control unit, join in marriage net monitoring facilities and go into house line live wire and be connected, monitor the voltage of going into house line live wire, charging and discharging equipment is connected with going into house line live wire, joins in marriage net monitoring facilities, charging and discharging equipment and communication unit and all is connected with the control unit, communication unit and control center communication connection.
2. The fast response energy storage device for distribution networks of claim 1,
the charging and discharging equipment comprises a shell, a charging unit, an inversion unit, a voltage detection unit, two electronic switches and a battery, wherein the control unit, the charging unit, the inversion unit, a communication unit and the battery are all installed in the shell, the charging unit and the inversion unit are respectively connected with an indoor live wire through the electronic switches, the charging unit and the inversion unit are all connected with a positive electrode of the battery, a negative electrode of the battery is connected with an indoor zero line, the voltage detection unit detects voltages at two ends of the battery, the charging unit, the inversion unit, the communication unit, the voltage detection unit and the electronic switches are all connected with the control unit, and the communication unit is in communication connection with a control center.
3. The fast response energy storage device for distribution networks of claim 2,
the user side energy storage equipment further comprises a passive fire extinguisher, the passive fire extinguisher is installed in the shell and comprises a high-pressure gas tank and a trigger plug, high-pressure fire extinguishing gas is filled in the high-pressure gas tank, and the trigger plug is installed at an outlet of the high-pressure gas tank.
4. The fast response energy storage device for distribution networks of claim 3,
the trigger plug comprises a sliding tongue and paraffin, an inner thread is processed on the inner wall of the tank nozzle of the high-pressure gas tank, the sliding tongue is provided with an outer thread matched with the inner thread of the tank nozzle, the sliding tongue is in threaded connection with the tank nozzle, a gap is formed between the outer thread of the sliding tongue and the inner thread of the tank nozzle, and the paraffin is filled between the outer thread of the sliding tongue and the inner thread of the tank nozzle.
5. The fast response energy storage device for distribution networks of claim 4,
the trigger plug further comprises two contact heads, the two contact heads are embedded on the tank mouth and are in conductive connection, and the two contact heads are connected between the battery and the charging unit in series.
6. The fast response energy storage device for distribution networks of claim 5,
the trigger plug further comprises a conducting ring, the conducting ring is sleeved outside the tank nozzle, and the two contact heads are abutted to the conducting ring.
7. The fast response energy storage device for distribution networks of claim 6,
the trigger plug further comprises a silicon ring, the silicon ring is sleeved outside the tank nozzle, and the conducting ring is sleeved outside the silicon ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110234985.4A CN113013907A (en) | 2021-03-03 | 2021-03-03 | Quick response energy storage device for distribution network |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110234985.4A CN113013907A (en) | 2021-03-03 | 2021-03-03 | Quick response energy storage device for distribution network |
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| CN113013907A true CN113013907A (en) | 2021-06-22 |
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| CN202110234985.4A Pending CN113013907A (en) | 2021-03-03 | 2021-03-03 | Quick response energy storage device for distribution network |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109200504A (en) * | 2018-11-28 | 2019-01-15 | 佛山市智阳能源有限公司 | A kind of automatic fire extinguisher for photovoltaic combiner box |
| US20190168037A1 (en) * | 2017-12-01 | 2019-06-06 | International Business Machines Corporation | Automatically generating fire-fighting foams to combat li-ion battery failures |
| CN110931674A (en) * | 2019-10-09 | 2020-03-27 | 国网浙江省电力有限公司湖州供电公司 | Low-voltage energy storage device and control method thereof |
| CN211790786U (en) * | 2019-12-19 | 2020-10-27 | 中国电力科学研究院有限公司 | Client side energy storage energy management system |
-
2021
- 2021-03-03 CN CN202110234985.4A patent/CN113013907A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190168037A1 (en) * | 2017-12-01 | 2019-06-06 | International Business Machines Corporation | Automatically generating fire-fighting foams to combat li-ion battery failures |
| CN109200504A (en) * | 2018-11-28 | 2019-01-15 | 佛山市智阳能源有限公司 | A kind of automatic fire extinguisher for photovoltaic combiner box |
| CN110931674A (en) * | 2019-10-09 | 2020-03-27 | 国网浙江省电力有限公司湖州供电公司 | Low-voltage energy storage device and control method thereof |
| CN211790786U (en) * | 2019-12-19 | 2020-10-27 | 中国电力科学研究院有限公司 | Client side energy storage energy management system |
Non-Patent Citations (2)
| Title |
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| 刘劲松: "《专业学位研究生实验课程 工科篇》", 30 November 2017 * |
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