CN203787960U - Active power distribution network system with low carbon property - Google Patents
Active power distribution network system with low carbon property Download PDFInfo
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- CN203787960U CN203787960U CN201420204805.3U CN201420204805U CN203787960U CN 203787960 U CN203787960 U CN 203787960U CN 201420204805 U CN201420204805 U CN 201420204805U CN 203787960 U CN203787960 U CN 203787960U
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- power distribution
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Abstract
The utility model discloses an active power distribution network system with a low carbon property. The system is characterized in that: the system comprises a high-voltage power distribution network, a first transformer and a middle-voltage level power distribution network; the high-voltage power distribution network is coupled to the middle-voltage level power distribution network through the first transformer; the system also comprises a current transformer, a second transformer connected to the current transformer and the middle-voltage level power distribution network and a renewable energy unit coupled to the current transformer; the direct current generated by the renewable energy unit is changed into an alternating current through the current transformer, and the alternating current is sent to the middle-voltage level power distribution network through the second transformer.
Description
Technical field
The utility model relates to a kind of initiatively distribution network system, especially relates to a kind of active distribution network system with low-carbon (LC) attribute.
Background technology
Along with the fast development of economic society, electric load demand increases day by day, and existing electric power system just constantly approaches or exceeded the limit of system safety stable operation.Meanwhile, the traditional power generation mode taking coal as main energy source is faced with a series of problems such as resource exhaustion, climate warming and environmental pollution.At present, the opening of the sustainable growth of electricity needs, the shortage of traditional energy and electricity market just driving electrical network towards efficient, flexibly, the future development of intelligence and low-carbon (LC), to adapt to following demand.
Be embodied in especially a large amount of accesses and the application of regenerative resource of distributed power source (DG) to low-carbon (LC) future development.But a large amount of accesses of DG will cause wide influence to power distribution network, be mainly manifested in: the complexity that changes the voltage levvl of power distribution network, the capacity of short circuit that improves power distribution network, relaying protection strategy strengthens, affects the power supply reliability of network and the deterioration of the aggravation quality of power supply etc.The dissolve existence of scarce capacity, rack weakness, the problem such as automatization level is not high, scheduling mode is backward and the interactive level of electricity consumption is lower of power distribution network side regenerative resource has seriously restricted the hypersynchronous of regenerative resource, is unfavorable for optimizing and revising of energy resource structure.Under such overall background, develop a kind of active distribution network system with low-carbon (LC) attribute and seem particularly urgent and important.
Utility model content
In view of the above problems, the utility model has been proposed to a kind of active distribution network system that overcomes the problems referred to above or address the above problem is at least in part provided.
According to an aspect of the present utility model, a kind of active distribution network system with low-carbon (LC) attribute is provided, it is characterized in that comprising: high voltage distribution network; The first transformer; Middle pressure grade power distribution network, high voltage distribution network is couple to middle pressure grade power distribution network by the first transformer; Current transformer; The second transformer, is connected respectively to current transformer and middle pressure grade power distribution network; And renewable energy source unit, being couple to current transformer, the direct current that described renewable energy source unit generates is converted to alternating current by current transformer, and sends into middle pressure grade power distribution network by the second transformer again.
Alternatively, also comprise according to active distribution network system of the present utility model: multiple feeder line beginning control unit, is coupled in described middle pressure grade power distribution network.
Alternatively, also comprise according to active distribution system of the present utility model: multiple flexible loads, are coupled in described middle pressure grade power distribution network.
The utility model is by adopting initiatively distribution network system, greatly promoted regenerative resource access capability, effectively reduce the loss in network.In realizing high reliability power supply, realize distributing rationally of regenerative resource, reach the object of energy savings and protection of the environment.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other objects, features and advantages of the present utility model can be become apparent, below especially exemplified by embodiment of the present utility model.
Brief description of the drawings
By reading below detailed description of the preferred embodiment, various other advantage and benefits will become cheer and bright for those of ordinary skill in the art.Accompanying drawing is only for the object of preferred implementation is shown, and do not think restriction of the present utility model.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 shows the active distribution network system according to an execution mode of the present utility model.
Embodiment
Exemplary embodiment of the present disclosure is described below with reference to accompanying drawings in more detail.Although shown exemplary embodiment of the present disclosure in accompanying drawing, but should be appreciated that and can realize the disclosure and the embodiment that should do not set forth limits here with various forms.On the contrary, it is in order more thoroughly to understand the disclosure that these embodiment are provided, and can be by the those skilled in the art that conveys to complete the scope of the present disclosure.
Fig. 1 shows a kind of active distribution network system with low-carbon (LC) attribute according to an execution mode of the utility model.In this distribution network system, high voltage distribution network 100 (being for example the high voltage source of 110KV) by HV/MV transformer 200 (i.e. the first transformer) by power delivery in middle pressure grade power distribution network 300, be urban electricity supply.As shown in Figure 1, middle pressure grade power distribution network 300 has two 10KV ac bus as power supply.Transformer 200 is on-load tap-changing transformer, can be used as a kind of effective means that in initiatively power distribution network management, voltage is adjusted.
In this urban power distribution network 300, access a large amount of renewable energy source units 600.Renewable energy source unit 600 is for example for being the clean energy resource taking wind-powered electricity generation and photovoltaic generation as representative, and they provide a large amount of electric energy for power distribution network 300.The electric energy that renewable energy source unit 600 produces is direct current, and be linked in direct current bus 500, can direct current be changed by current transformer 400 subsequently into the alternating current of the corresponding frequencies that system accepts, then change 10KV electric pressure into and be incorporated in power distribution network 300 so that online power supply by the second transformer.
In this active distribution network system, also in power distribution network 300, be connected with multiple feeder line beginning control unit K1, K2, K3, K4, K5, K6 and K7.This active distribution network system is taked closed loop design, and the whole closures of K1-K7 just can realize network operation with closed ring.This distribution network system can move in open loop simultaneously,, in actual moving process, one of them switch can be disconnected, for example, in Fig. 1, K4 is disconnected and moved.In actual moving process, cause the K switch 1-K7 of power distribution network open loop dynamically to adjust according to the principle that the whole network loss minimization and rack load balancing are distributed, thereby conservation of power cost of serving to greatest extent reach the object of low-carbon (LC).
In this active distribution network system, also in power distribution network 300, be connected with L1, L2, L3, L4, L5, L6.L1-L6 is flexible load, in the low power consumption phase, Spot Price is lower, user's throughput examining system obtains this information, conscious by power consumption activity schedule during this period, as a large amount of energy storage of electric automobile station L1, resident washes clothes, turns on the aircondition etc., increase power consumption, effectively filled up load valley; And in peak times of power consumption, Spot Price is in higher level, these loads may become again power supply, the dump energy or the power autonomous electric energy of user that store as electric automobile charging station L1 can inject to acquire an advantage in electrical network, thereby cut down load peak, so just can pass through dsm peak load shifting, improved load curve, thereby the ability of dissolving that has greatly promoted regenerative resource, realizes low-carbon (LC).
Flexible load L1-L6 refers to can change of load curve, has the load of flexibility and changeability characteristic, comprises interruptible load, demanding party's generating and the autonomous control overhead of user.Described interruptible load refers to that user and Utilities Electric Co. sign interruptible load agreement, and in the set time in the time of system peak, or in any time requiring in Utilities Electric Co., Utilities Electric Co. can reduce the load of user's need for electricity.The generating of described demanding party refers to the power autonomous of some user, as electric automobile charging station etc.The autonomous control overhead of described user refers to that user is according to Spot Price, from main regulation power consumption size, as opened the time on daytime that arrangement of time is more at solar power generation, electricity price is more cheap of washing machine.
In the specification that provided herein, a large amount of details are described.But, can understand, embodiment of the present utility model can put into practice in the situation that there is no these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
In addition, those skilled in the art can understand, although embodiment more described herein comprise some feature instead of further feature included in other embodiment, the combination of the feature of different embodiment means within scope of the present utility model and forms different embodiment.For example, in the following claims, the one of any of embodiment required for protection can be used with compound mode arbitrarily.
It should be noted that above-described embodiment describes the utility model instead of the utility model is limited, and those skilled in the art can design alternative embodiment in the case of not departing from the scope of claims.In the claims, any reference symbol between bracket should be configured to limitations on claims.Word " comprises " not to be got rid of existence and is not listed as element or step in the claims.Being positioned at word " " before element or " one " does not get rid of and has multiple such elements.The utility model can be by means of including the hardware of some different elements and realizing by means of the computer of suitably programming.In the unit claim of having enumerated some devices, several in these devices can be to carry out imbody by same hardware branch.The use of word first, second and C grade does not represent any order.Can be title by these word explanations.
Claims (3)
1. an active distribution network system with low-carbon (LC) attribute, is characterized in that comprising:
High voltage distribution network;
The first transformer;
Middle pressure grade power distribution network, high voltage distribution network is couple to middle pressure grade power distribution network by the first transformer;
Current transformer;
The second transformer, is connected respectively to current transformer and middle pressure grade power distribution network; And
Renewable energy source unit, is couple to current transformer, and the direct current that described renewable energy source unit generates is converted to alternating current by current transformer, and sends into middle pressure grade power distribution network by the second transformer again.
2. active distribution network system as claimed in claim 1, is characterized in that comprising:
Multiple feeder line beginning control units, are coupled in described middle pressure grade power distribution network.
3. the active distribution network system as described in claim 1 or 2, is characterized in that comprising:
Multiple flexible loads, are coupled in described middle pressure grade power distribution network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204805.3U CN203787960U (en) | 2014-04-24 | 2014-04-24 | Active power distribution network system with low carbon property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420204805.3U CN203787960U (en) | 2014-04-24 | 2014-04-24 | Active power distribution network system with low carbon property |
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| CN203787960U true CN203787960U (en) | 2014-08-20 |
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| CN201420204805.3U Expired - Fee Related CN203787960U (en) | 2014-04-24 | 2014-04-24 | Active power distribution network system with low carbon property |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934972A (en) * | 2015-06-14 | 2015-09-23 | 浙江大学 | Active tide control power grid and control method of power exchange power node and medium-voltage distribution network |
| CN104239966B (en) * | 2014-08-28 | 2017-04-12 | 广东电网公司电力科学研究院 | Active power distribution network operating method based on electricity cost differentiation |
-
2014
- 2014-04-24 CN CN201420204805.3U patent/CN203787960U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104239966B (en) * | 2014-08-28 | 2017-04-12 | 广东电网公司电力科学研究院 | Active power distribution network operating method based on electricity cost differentiation |
| CN104934972A (en) * | 2015-06-14 | 2015-09-23 | 浙江大学 | Active tide control power grid and control method of power exchange power node and medium-voltage distribution network |
| CN104934972B (en) * | 2015-06-14 | 2017-05-31 | 浙江大学 | Power Exchange node and medium voltage distribution network active power flowcontrol power network and control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20180424 |
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| CF01 | Termination of patent right due to non-payment of annual fee |