TWI683505B - Decentralized battery energy storage system with both electric energy regulation and power supply quality - Google Patents
Decentralized battery energy storage system with both electric energy regulation and power supply quality Download PDFInfo
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Abstract
本創作係關於一種兼具電能調節與供電品質之分散式電池儲能系統，主要係透過偵測各供電饋線電流的電力品質，一旦判斷電力品質不佳，立即斷開相對應之供電饋線，以避免電力品質不良之電能流入負載組內，藉以確保負載組所接收之電能具有較佳電力品質；同時，當供電量不足時，則將儲能單元投入系統中作為備用供電單元使用，而當供電量充足時，則控制供電單元將多餘電能儲存至該儲能單元，以令本創作具有電能調節之功能，可有效避免供電不足之狀況。This creation is about a decentralized battery energy storage system with both power regulation and power supply quality. It is mainly to detect the power quality of each feeder current. Once the power quality is judged to be poor, immediately disconnect the corresponding power supply feeder to To avoid the power of poor power quality flowing into the load group, to ensure that the power received by the load group has better power quality; at the same time, when the power supply is insufficient, the energy storage unit is put into the system as a backup power supply unit, and when the power supply When the amount is sufficient, the power supply unit is controlled to store the surplus electric energy to the energy storage unit, so that the creation has the function of electric energy regulation, which can effectively avoid the situation of insufficient power supply.
Description
本發明創作係一種儲能系統，尤指一種兼具電能調節與供電品質之分散式電池儲能系統。The creation of the invention is an energy storage system, especially a decentralized battery energy storage system with both electric energy regulation and power supply quality.
按，無論是船舶供電網絡、或是陸上供電網絡，一旦供電網絡中有饋線發生絕緣異常(如發生破損、斷裂等)，容易造成人體觸電的危險性，當人體觸及帶電體時，使人體通過接地相直接與線電壓構成導電迴路；或是，若有其他饋線同樣發生絕緣異常時，二者之間便容易造成短路的危險性，不僅如此，上述問題也影響著整體的供電品質。 針對上述之問題，本發明創作者雖提供台灣專利證書號I626457「船舶電力分歧饋線絕緣異常定位系統」進行解決。然而，解決問題的過程中未考慮到供電網絡的電力品質，造成上述供電網絡仍就無法提供負載較佳的供電品質，以保護負載的使用壽命。雖然有人在供電網絡中增設電力品質偵測器，但充其量也只是用來偵測電力品質之優劣而已，一但電力品質不佳時僅發出警報以提醒相關維修人員注意，並無法自動化立即作出相對應緊急措施。同時，由於上述系統缺乏電能調節功能，當供電單元發出多餘電能時，若無妥善儲存，則多餘電能將消失形成浪費，而當供電單元發電不足時，則無法提供負載充足電能。 有鑑於此，本發明創作者根據實務經驗認為實有改善之必要，而著手開始思考解決之手段。No matter whether it is a ship's power supply network or a land-based power supply network, once there is a feeder insulation abnormality (such as damage or breakage) in the power supply network, it is easy to cause the risk of electric shock to the human body. When the human body touches the charged body, let the human body pass The grounding phase directly forms a conductive loop with the line voltage; or, if other feeders also have insulation abnormalities, the risk of short-circuiting between the two is likely to occur. Not only that, but the above problems also affect the overall power supply quality. In response to the above problems, the creator of the present invention provided Taiwan Patent Certificate No. I626457 "Insulation Abnormal Positioning System for Marine Power Divergent Feeders" to solve. However, the power quality of the power supply network is not considered in the process of solving the problem, so that the above power supply network still cannot provide better power supply quality of the load to protect the service life of the load. Although some people have added power quality detectors in the power supply network, they are only used to detect the quality of the power at best. Once the power quality is not good, only an alarm is issued to remind the relevant maintenance personnel to pay attention, and can not be automatically Corresponding emergency measures. At the same time, due to the lack of power adjustment function of the above system, when the power supply unit emits excess power, if it is not properly stored, the excess power will disappear and form a waste, and when the power supply unit generates insufficient power, it will not be able to provide sufficient power for the load. In view of this, the creator of the present invention believes that there is a need for improvement based on practical experience, and then starts to think about the solution.
有鑑於先前技術所述不足之處，本發明創作者提供一種解決之手段，該手段係關於一種兼具電能調節與供電品質之分散式電池儲能系統，包括： 一供電饋線： 該供電饋線分別電性連接一儲能單元之電流輸出端及一負載組，且該供電饋線設有一電流輸入端，且於該電流輸入端設有一第一電力電子開關，該儲能單元與該電流輸入端之間設一第二電力電子開關。 一第一電力品質偵測器： 該第一電力品質偵測器設於該電流輸入端且電性連接該第一電力電子開關，該第一電力品質偵測器可供偵測流經該第一電力電子開關之電力品質參數組以供判斷電力品質是否合格，一但電力品質判斷未合格，則控制該第一電力電子開關斷開。 一供電單元： 該供電單元分別電性連接該電流輸入端及該儲能單元之電流輸入端，該供電單元與該電流輸入端之間設有一第三電力電子開關及一第二電力品質偵測器，該第二電力品質偵測器可供偵測流經該第三電力電子開關之電力品質參數組以供判斷電力品質是否合格，一但電力品質判斷未合格，則控制該第三電力電子開關斷開，且控制該第二電力電子開關形成通路；該供電單元與該儲能單元之間設有一第四電力電子開關。 一電能調節單元： 該電能調節單元分別電性連接該負載組、該供電單元、該第二電力電子開關及該第四電力電子開關，該電能調節單元可供偵測該負載組之用電量、及該供電單元之發電量，當該發電量低於該用電量時，則控制該第二電力電子開關形成通路、該第四電力電子開關斷開；當該發電量高於該用電量時，則控制該第二電力電子開關斷開、該第四電力電子開關形成通路。 爰此，本發明創作主要係透過該第一電力品質偵測器來偵測通過的電流之電力品質，一但判斷電力品質不佳，則立即自動控制該第一電力電子開關斷開，以避免電力品質不良的電流投入該供電饋線對負載組造成不良影響，以令本創作得以提供電力品質較佳之電源；同時，透過該電能調節單元不斷偵測該負載組、及該供電單元，一旦發生供電不足之狀況，則控制該第二電力電子開關形成通路，以令該儲能單元投入系統中，作為備用供電單元提供該負載組所需電能；反之，當供電量充足時，則將該供電單元發出多餘的電能透過儲能單元進行儲存，以令本創作得以同時具有電能調節之功能，可提供該負載組穩定且充足之電能。In view of the deficiencies described in the prior art, the inventor of the present invention provides a solution to the problem, which relates to a decentralized battery energy storage system with both power regulation and power supply quality, including: a power feeder: the power feeder separately The current output terminal of an energy storage unit and a load group are electrically connected, and the power supply feeder is provided with a current input terminal, and a first power electronic switch is provided on the current input terminal. The energy storage unit and the current input terminal There is a second power electronic switch. A first power quality detector: The first power quality detector is located at the current input terminal and is electrically connected to the first power electronic switch, and the first power quality detector can detect the flow through the first The power quality parameter set of a power electronic switch is used to judge whether the power quality is qualified. Once the power quality judgment is not qualified, the first power electronic switch is controlled to be turned off. A power supply unit: the power supply unit is electrically connected to the current input terminal and the current input terminal of the energy storage unit respectively, and a third power electronic switch and a second power quality detection are provided between the power supply unit and the current input terminal The second power quality detector can be used to detect the power quality parameter set flowing through the third power electronic switch for judging whether the power quality is qualified. Once the power quality judgment is not qualified, the third power electronics is controlled The switch is opened, and the second power electronic switch is controlled to form a path; a fourth power electronic switch is provided between the power supply unit and the energy storage unit. An electric energy adjustment unit: the electric energy adjustment unit is electrically connected to the load group, the power supply unit, the second power electronic switch and the fourth power electronic switch, respectively, and the electric energy adjustment unit can detect the power consumption of the load group And the power generation amount of the power supply unit, when the power generation amount is lower than the power consumption, the second power electronic switch is controlled to form a path, and the fourth power electronic switch is opened; when the power generation amount is higher than the power consumption When the quantity is measured, the second power electronic switch is controlled to be turned off, and the fourth power electronic switch forms a path. Second, the creation of the present invention is mainly to detect the power quality of the passing current through the first power quality detector. Once the power quality is judged to be poor, the first power electronic switch is automatically controlled to be turned off immediately to avoid The current with poor power quality is put into the power supply feeder to cause a bad influence on the load group, so that the creation can provide a power source with better power quality; at the same time, the power regulation unit continuously detects the load group and the power supply unit, once the power supply occurs Insufficient conditions, the second power electronic switch is controlled to form a path, so that the energy storage unit is put into the system as a backup power supply unit to provide the electrical energy required by the load group; otherwise, when the power supply is sufficient, the power supply unit The excess electric energy is sent out to be stored through the energy storage unit, so that the creation can simultaneously have the function of electric energy regulation, and can provide stable and sufficient electric energy of the load group.
以下藉由圖式之輔助，說明本發明創作之構造、特點與實施例，俾使貴審查人員對於本發明創作有更進一步之瞭解。 請參閱第一圖所示，本發明創作係關於一種兼具電能調節與供電品質之分散式電池儲能系統，包括： 一供電饋線(1)： 請參閱第一圖所示，該供電饋線(1)分別電性連接一儲能單元(2)之電流輸出端及一負載組(3)，且該供電饋線(1)設有一電流輸入端。且於該電流輸入端設有一第一電力電子開關(4A)，該儲能單元(2)與該電流輸入端之間設一第二電力電子開關(4B)，舉凡可供將電能進行儲存、釋放者，均為本說明書所指之儲能單元(2)。一般而言，該供電網絡中包括數量繁多之供電饋線(1)，本說明書之圖式先將供電網絡簡化成二條該供電饋線(1)來呈現，並舉其中一條該供電饋線(1)來說明本創作之優點，及特色。且，值得一提的是，本創作所指之供電網絡不限於陸地供電網絡，也可用於船舶供電網絡，或是市內供電網絡。 一第一電力品質偵測器(5A)： 請參閱第一圖所示，該第一電力品質偵測器(5A)設於該電流輸入端且電性連接該第一電力電子開關(4A)，該第一電力品質偵測器(5A)可供偵測流經該第一電力電子開關(4A)之電力品質參數組以供判斷電力品質是否合格，一但電力品質判斷未合格，則控制該第一電力電子開關(4A)斷開。其中，值得一提的是，上述電力品質參數組包括：一電壓變化率、一總電流諧波、一總電壓諧波、一功率因數，及一三相平衡偵測值；當該電壓變化率、該總電流諧波、該總電壓諧波、該功率因數，及該三相平衡偵測值其中之一未滿足預設範圍時，則判斷該電力品質不合格，例如該電壓變化率10%以上即為未達標準，以下各電力品質偵測器較佳是根據上述方式判斷電力品質之好壞。 一供電單元(8)： 請參閱第一圖所示，該供電單元(8)分別電性連接該電流輸入端及該儲能單元(2)之電流輸入端，該供電單元(8)與該電流輸入端之間設有一第三電力電子開關(4C)及一第二電力品質偵測器(5B)，該第二電力品質偵測器(5B)可供偵測流經該第三電力電子開關(4C)之電力品質參數組以供判斷電力品質是否合格，一但電力品質判斷未合格，則控制該第三電力電子開關(4C)斷開，且控制該第二電力電子開關(4B)形成通路；該供電單元(8)與該儲能單元(2)之間設有一第四電力電子開關(4D)。其中，該供電單元(8)可為一發電機(如風力發電機、火力發電機、核能發電機等)、市電。 一電能調節單元(9)： 請參閱第一圖所示，該電能調節單元(9)分別電性連接該負載組(3)、該供電單元(8)、該第二電力電子開關(4B)及該第四電力電子開關(4D)，該電能調節單元(9)可供偵測該負載組(3)之用電量、及該供電單元(8)之發電量，當該發電量低於該用電量時，則控制該第二電力電子開關(4B)形成通路、該第四電力電子開關(4D)斷開；當該發電量高於該用電量時，則控制該第二電力電子開關(4B)斷開、該第四電力電子開關(4D)形成通路。 本創作主要係透過該第一電力品質偵測器(5A)來監控流經該供電饋線(1)的電力品質，一旦判斷電力品質不佳，則自動控制該第一電力電子開關(4A)斷開，令不良之電流無法流入該負載組(3)，藉以避免不良電流對該負載組(3)造成不良影響，以確保該負載組(3)得以接收較佳電力品質之電能；同時，當該供電單元(8)之供電量充足時，則可利用該儲能單元(2)儲存多餘之電能，當供電單元(8)之供電量匱乏時，則將該儲能單元(2)投入系統中，作為備用供電單元使用，確保該負載組(3)不因供電不足而停擺，以令本創作兼具電能調節之功能。 上述實施例中，該儲能單元(2)所儲存之電能主要係透過儲存該供電單元(8)發出多餘的電能，為確保該儲能單元(2)所儲存之電能同樣具有較佳之電力品質，同樣的，若判斷流入該儲能單元(2)之電力品質不佳時，也須即時斷開饋線，故，本創作再進一步可以實施為：該供電單元(8)與該儲能單元(2)之間設有一第四電力電子開關(4D)及一第三電力品質偵測器(5C)，該第三電力品質偵測器(5C)可供偵測流經該第四電力電子開關(4D)之電力品質參數組以供判斷電力品質是否合格，一但電力品質判斷未合格，則控制該第四電力電子開關(4D)斷開。 此外，當本創作應用於陸地供電網絡，或是船舶供電網絡時，為令機組人員得以有效監控各供電饋線(1)之電力品質，本創作可以實施為：更設一顯示單元(6)，該顯示單元(6)分別電性連接各電力品質偵測器(5A~5C)，以供接收各電力品質偵測器(5A~5C)之偵測結果，以令該機組人員得以了解該供電網絡之供電品質，一旦發現有其中一供電饋線(1)疑似電力品質不佳，得以即時進行補救。又，當電力品質出現問題時，為有效提醒機組人員，本創作更進一步可以實施為：更設一警報單元(7)，該警報單元(7)分別電性連接各電力品質偵測器(5A~5C)，當其中一電力品質偵測器(5A、5B、5C)之偵測結果為不合格時，則該警報單元(7)開始作動，其中，該警報單元(7)可以是蜂鳴器，也可以是於該顯示單元(6)以人機介面之閃爍、顏色變化等作為警報、警示。 綜上所述，本發明創作確實符合產業利用性，且未於申請前見於刊物或公開使用，亦未為公眾所知悉，且具有非顯而易知性，符合可專利之要件，爰依法提出專利申請。 惟上述所陳，為本發明創作在產業上一較佳實施例，舉凡依本發明創作申請專利範圍所作之均等變化，皆屬本案訴求標的之範疇。With the aid of the drawings, the following describes the structure, features and embodiments of the creation of the present invention, so that your reviewers have a better understanding of the creation of the present invention. Please refer to the first figure, the creation of the present invention relates to a decentralized battery energy storage system with both power regulation and power supply quality, including: a power feeder (1): Please refer to the first figure, the power supply feeder ( 1) The current output terminal of an energy storage unit (2) and a load group (3) are respectively electrically connected, and the power supply feeder (1) is provided with a current input terminal. And a first power electronic switch (4A) is provided on the current input terminal, and a second power electronic switch (4B) is provided between the energy storage unit (2) and the current input terminal. The releasers are the energy storage units (2) referred to in this manual. Generally speaking, the power supply network includes a large number of power supply feeders (1), the diagram of this specification first simplifies the power supply network into two power supply feeders (1) to present, and cite one of the power supply feeders (1) to illustrate The advantages and characteristics of this creation. Moreover, it is worth mentioning that the power supply network referred to in this creation is not limited to the land power supply network, but can also be used for the ship power supply network or the city power supply network. A first power quality detector (5A): Please refer to the first figure, the first power quality detector (5A) is provided at the current input terminal and electrically connected to the first power electronic switch (4A) , The first power quality detector (5A) can detect the power quality parameter set flowing through the first power electronic switch (4A) for judging whether the power quality is qualified, once the power quality judgment is not qualified, then control The first power electronic switch (4A) is turned off. Among them, it is worth mentioning that the above-mentioned power quality parameter group includes: a voltage change rate, a total current harmonic, a total voltage harmonic, a power factor, and a three-phase balance detection value; when the voltage change rate , If one of the total current harmonics, the total voltage harmonics, the power factor, and the three-phase balance detection value does not meet the preset range, the power quality is judged to be unqualified, for example, the voltage change rate is 10% The above is not up to the standard. The following power quality detectors preferably judge the quality of power according to the above method. A power supply unit (8): Please refer to the first figure, the power supply unit (8) is electrically connected to the current input terminal and the current input terminal of the energy storage unit (2), the power supply unit (8) and the A third power electronic switch (4C) and a second power quality detector (5B) are provided between the current input terminals, and the second power quality detector (5B) can detect the flow through the third power electronics The power quality parameter set of the switch (4C) is used to judge whether the power quality is qualified. Once the power quality is judged to be unqualified, the third power electronic switch (4C) is controlled to be turned off, and the second power electronic switch (4B) is controlled A passage is formed; a fourth power electronic switch (4D) is provided between the power supply unit (8) and the energy storage unit (2). Wherein, the power supply unit (8) may be a generator (such as a wind generator, a thermal generator, a nuclear power generator, etc.) or commercial power. An electric energy adjustment unit (9): Please refer to the first figure, the electric energy adjustment unit (9) is electrically connected to the load group (3), the power supply unit (8), and the second power electronic switch (4B) And the fourth power electronic switch (4D), the power regulating unit (9) can detect the power consumption of the load group (3), and the power generation amount of the power supply unit (8), when the power generation amount is lower than When the power consumption is used, the second power electronic switch (4B) is controlled to form a path, and the fourth power electronic switch (4D) is opened; when the power generation amount is higher than the power consumption, the second power is controlled The electronic switch (4B) is opened, and the fourth power electronic switch (4D) forms a path. This creation mainly uses the first power quality detector (5A) to monitor the power quality flowing through the power feeder (1). Once the power quality is judged to be poor, it automatically controls the first power electronic switch (4A) to turn off On, so that the bad current cannot flow into the load group (3), so as to avoid the bad current from adversely affecting the load group (3), so as to ensure that the load group (3) can receive the power of better power quality; at the same time, when When the power supply of the power supply unit (8) is sufficient, the energy storage unit (2) can be used to store excess electrical energy. When the power supply of the power supply unit (8) is scarce, the energy storage unit (2) is put into the system In the middle, it is used as a backup power supply unit to ensure that the load group (3) does not stop due to insufficient power supply, so that this creation has the function of electric energy regulation. In the above embodiment, the electrical energy stored in the energy storage unit (2) mainly generates excess electrical energy by storing the power supply unit (8), in order to ensure that the electrical energy stored in the energy storage unit (2) also has better power quality In the same way, if it is judged that the quality of the electric power flowing into the energy storage unit (2) is not good, the feeder must also be disconnected immediately, so this creation can be further implemented as: the power supply unit (8) and the energy storage unit ( 2) There is a fourth power electronic switch (4D) and a third power quality detector (5C), the third power quality detector (5C) can detect the flow through the fourth power electronic switch The power quality parameter set of (4D) is used to judge whether the power quality is qualified. Once the power quality judgment is not qualified, the fourth power electronic switch (4D) is controlled to be turned off. In addition, when this creation is applied to a terrestrial power supply network or a ship power supply network, in order to allow the crew to effectively monitor the power quality of each power supply feeder (1), the creation can be implemented as follows: a display unit (6) is provided, The display unit (6) is electrically connected with each power quality detector (5A~5C) to receive the detection result of each power quality detector (5A~5C), so that the crew can understand the power supply Once the power supply quality of the network is found to have one of the power supply feeders (1) suspected of poor power quality, it can be remedied immediately. In addition, when there is a problem with the power quality, in order to effectively alert the crew, the creation can be further implemented as follows: an alarm unit (7) is further provided, and the alarm unit (7) is electrically connected to each power quality detector (5A) ~5C), when the detection result of one of the power quality detectors (5A, 5B, 5C) is unqualified, the alarm unit (7) starts to operate, wherein the alarm unit (7) may be a buzzer The display unit (6) may use blinking, color change, etc. of the man-machine interface as an alarm or warning. In summary, the creation of the present invention is indeed in line with industrial utilization, and it has not been seen in publications or public use prior to the application, nor is it known to the public, and it is non-obvious and easy to understand, and meets the requirements of patentability. Application. However, what has been stated above is a preferred embodiment of the invention creation in the industry, and any changes made in accordance with the patent application scope of the invention creation are within the scope of the claim of this case.
(1)‧‧‧供電饋線 (2)‧‧‧儲能單元 (3)‧‧‧負載組 (4A~4D)‧‧‧第一至第四電力電子開關 (5A~5C)‧‧‧第一至第三電力品質偵測器 (6)‧‧‧顯示單元 (7)‧‧‧警報單元 (8)‧‧‧供電單元 (9)‧‧‧電能調節單元(1)‧‧‧Power supply feeder (2)‧‧‧Energy storage unit (3)‧‧‧load group (4A~4D)‧‧‧First to fourth power electronic switches (5A~5C)‧‧‧First to third power quality detector (6)‧‧‧Display unit (7)‧‧‧Alarm unit (8)‧‧‧Power supply unit (9)‧‧‧Electric power adjustment unit
第一圖系本創作各元件連結示意圖The first picture is a schematic diagram of the connection of the components of this creation
(1)‧‧‧供電饋線 (1)‧‧‧Power supply feeder
(2)‧‧‧儲能單元 (2)‧‧‧Energy storage unit
(3)‧‧‧負載組 (3)‧‧‧load group
(4A~4D)‧‧‧第一至第四電力電子開關 (4A~4D)‧‧‧First to fourth power electronic switches
(5A~5C)‧‧‧第一至第三電力品質偵測器 (5A~5C)‧‧‧First to third power quality detector
(6)‧‧‧顯示單元 (6)‧‧‧Display unit
(7)‧‧‧警報單元 (7)‧‧‧Alarm unit
(8)‧‧‧供電單元 (8)‧‧‧Power supply unit
(9)‧‧‧電能調節單元 (9)‧‧‧Electric power adjustment unit
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108101167A TWI683505B (en) | 2019-01-11 | 2019-01-11 | Decentralized battery energy storage system with both electric energy regulation and power supply quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108101167A TWI683505B (en) | 2019-01-11 | 2019-01-11 | Decentralized battery energy storage system with both electric energy regulation and power supply quality |
Publications (2)
| Publication Number | Publication Date |
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| TWI683505B true TWI683505B (en) | 2020-01-21 |
| TW202027370A TW202027370A (en) | 2020-07-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW546886B (en) * | 2001-11-15 | 2003-08-11 | Ind Tech Res Inst | Central monitoring power quality control system |
| CN102510068A (en) * | 2011-11-06 | 2012-06-20 | 中国科学院电工研究所 | Distributed power quality conditioner and method for controlling same |
| TW201506831A (en) * | 2013-08-09 | 2015-02-16 | Univ Chien Hsin Sci & Tech | System for collection and detection of power quality event in micro grid |
| CN105896523A (en) * | 2015-02-13 | 2016-08-24 | 英飞凌科技股份有限公司 | Dynamically adapting device operations to handle changes in power quality |
| TW201633658A (en) * | 2014-10-23 | 2016-09-16 | 格倫肯頓 格羅森達爾 | Electrical power transmission network |
-
2019
- 2019-01-11 TW TW108101167A patent/TWI683505B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW546886B (en) * | 2001-11-15 | 2003-08-11 | Ind Tech Res Inst | Central monitoring power quality control system |
| CN102510068A (en) * | 2011-11-06 | 2012-06-20 | 中国科学院电工研究所 | Distributed power quality conditioner and method for controlling same |
| TW201506831A (en) * | 2013-08-09 | 2015-02-16 | Univ Chien Hsin Sci & Tech | System for collection and detection of power quality event in micro grid |
| TW201633658A (en) * | 2014-10-23 | 2016-09-16 | 格倫肯頓 格羅森達爾 | Electrical power transmission network |
| CN105896523A (en) * | 2015-02-13 | 2016-08-24 | 英飞凌科技股份有限公司 | Dynamically adapting device operations to handle changes in power quality |
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| TW202027370A (en) | 2020-07-16 |
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