华为UPS兼容性的挑战

华为UPS兼容性的挑战

华为UPS间断电源(UPS)和备用发电机在确保数据中心全天候正常运行方面发挥着重要作用。

不间断电源(UPS)和备用发电机在确保数据中心全天候正常运行方面发挥着重要作用。
　　
　　UPS是防止数据中心电力供应不佳、数据丢失和设备损坏的第一道防线，可以在短暂停电期间为关键负载提供电源保障，而备用发电机可以为需要更长运行时间的应用提供进一步的电力供应。
　　
　　考虑到UPS和备用发电机在保护数据中心免受停机影响方面的互为补充的作用，解决其电源匹配和兼容方面存在的障碍非常重要。数据中心管理人员应了解这些设备的操作特性、交互和设计，以确保获得强大的一致性。
　　
　　本着兼容匹配的原则，以下是数据中心运营商在提高UPS和备用发电机的运行可靠性和性能可以采取的六个步骤：
　　
　　(1)评估发电机电压和频率调节。每台UPS都有设定的输入电压和频率范围，如果超过其阈值，将导致UPS电源拒绝切换到备用发电机供电，并继续使用电池供电。如果发电机的频率或电压范围太宽而导致UPS无法随，则UPS控制系统可能会将备用发电机解释为一种不稳定的电源。如果发生这种情况，UPS将一直保持电池供电，这最终会导致电池完全耗尽，导致负载中断运行。
　　
　　(2)调整备用发电机的功率。发电机的功率越大，频率越稳定，因此当UPS不再采用电池储存的电力，并开始从发电机获取电力时，它需要处理的电力浪涌越多。考虑到这一点，只要预算允许，最好确定备用发电机的功率，并允许采用发电机友好型UPS实现一些潜在增长。需要注意的是，不同的发电机、UPS、调节器类型将会影响供应商保证UPS成功兼容和匹配发电机的能力。因此，对于采用容量在25kVA以上的UPS一般建议如下：
　　
　　•采用汽油、丙烷、天然气为动力的机械调速备用发电机功率是负载功率的3倍(其中包括UPS输入功率、机房空调，以及所有其他必须保持在线运行的设备)。
　　
　　•配备电子调速器的备用发电机的功率是总负载功率的1.25至1.5倍。
　　
　　(3)考虑燃料来源。最常见的发电机燃料选择包括丙烷、天然气和柴油，每种燃料都有其自身的优点和缺点。采用丙烷和天然气燃料运行的发电机响应速度较慢，其功率需要比柴油发电机更大。而柴油被广泛认为是一种最好的燃料，并且主要用于50千瓦及更大的发电机解决方案。但是，柴油的存储寿命很短，其存储成本会使预算紧张。
　　
　　(4)不要忽视调速器。大多数发电机配备有调速器，调速器在负载变化时将输送到发动机的燃料速度限制在安全水平，并稳定发电机的输出电压和频率。电子调速器响应迅速，而机械调速器速度较慢，也可能导致校准问题。
　　
　　(5)考虑UPS拓扑。UPS的拓扑类型也会影响UPS和备用发电机的兼容性和配置，因为并非所有UPS都可以在不依赖电池的情况下补偿频率变化。后备UPS和在线互动式UPS都使用电池来防止频率变化影响受保护的负载。因此，发电机的不稳定频率可能导致UPS在发电机运行时转换到电池供电。另一方面，双变换在线UPS具有更宽的输入电压和频率范围。它重新创建正弦，波并过滤频率变化，作为其正常操作的一部分，从而延长电池寿命。
　　
　　(6)咨询制造商。通常情况下，企业需要了解发电机制造商已经测试并允许其产品与UPS配套使用的预期用途，以避免出现UPS无法匹配发电机功率等一系列潜在问题。为确保实现UPS更好地与发电机的功率进行匹配，请在购买这些设备之前咨询UPS和发电机制造商。此外，还可以在制造商的规格中获知需要保护的预期负载功率量。
　　
　　数据中心运营商在保持系统正常运行的同时，面临着节省时间和资金，以及提高运营效率的巨大压力。通过在备用发电机和UPS之间形成备用供电联盟，组织可以解决这些问题，并使负载受到保护。而且，就像团队合作以信任为基础的牢固关系一样，组织将拥有一个经得起时间考验的后备供电平台。

HUAWEI UPS compatibility challenges

Huawei UPS power supply (UPS) and standby generators play an important role in ensuring the normal operation of the data center around the clock.

Uninterruptible power supply (UPS) and standby generator play an important role in ensuring the normal operation of the data center around the clock.

UPS is the first line of defense against poor power supply, data loss and equipment damage in data centers, providing power for critical loads during short power outages, and backup generators can provide further power for applications requiring longer runtime.

Given the complementary role of UPS and standby generators in protecting data centers from downtime, it is important to address the obstacles to power matching and compatibility. Data center managers should understand the operational characteristics, interactions, and design of these devices to ensure strong consistency.

Following are six steps that data center operators can take to improve the operational reliability and performance of UPS and standby generators on the principle of compatibility and matching:

(1) evaluate generator voltage and frequency regulation. Each UPS has a set input voltage and frequency range. If the threshold is exceeded, the UPS power will refuse to switch to the standby generator and continue to use battery power. If the frequency or voltage range of the generator is too wide for UPS to follow, the UPS control system may interpret the standby generator as an unstable power source. If this happens, the UPS will always keep the battery powered, which eventually leads to complete battery depletion and load interruption.

(2) adjust the power of standby generator. The greater the generator's power, the more stable the frequency, so the more surges it needs to deal with when UPS stops using battery-stored power and starts getting power from the generator. With this in mind, it is best to determine the power of the standby generator as long as the budget allows, and allow for some potential growth with generator-friendly UPS. It should be noted that different types of generator, UPS, and regulator will affect the supplier's ability to ensure that UPS is successfully compatible with and matches generators. Therefore, the general adoption of UPS with capacity above 25kVA is generally recommended as follows:

* A mechanical-speed standby generator powered by gasoline, propane, and natural gas generates three times the power of the load (including UPS input power, room air conditioning, and all other equipment that must be maintained online).

The power of backup generators equipped with electronic governors is 1.25 to 1.5 times the total load power.

(3) consider the source of fuel. The most common fuel options for generators include propane, natural gas and diesel, each with its own advantages and disadvantages. Generators using propane and natural gas fuels respond slowly and require greater power than diesel generators. Diesel is widely regarded as one of the best fuels and is mainly used in 50 kW and larger generator solutions. However, the storage life of diesel is very short, and its storage cost will make the budget tight.

(4) don't neglect the governor. Most generators are equipped with governors that limit the speed of fuel delivered to the engine to a safe level when the load changes and stabilize the generator's output voltage and frequency. The electronic governor responds quickly, while the slower speed of the mechanical governor may lead to calibration.

(5) consider the UPS topology. The topology type of UPS also affects the compatibility and configuration of UPS and standby generators, because not all UPS can compensate for frequency variations without relying on batteries. Backup UPS and online interactive UPS use batteries to prevent frequency changes from affecting protected loads. Therefore, the unstable frequency of the generator may lead to the conversion of UPS to battery power when the generator is running. On the other hand, the dual transform online UPS has a wider input voltage and frequency range. It recreates the sine, waves and filters out frequency variations as part of its normal operation, thereby extending battery life.

(6) consulting manufacturers. Typically, companies need to understand the intended uses that generator manufacturers have tested and allowed their products to be used in conjunction with UPS to avoid a range of potential problems such as UPS being unable to match generator power. To ensure that UPS is better matched to generator power, consult UPS and generator manufacturers before purchasing these devices. In addition, the expected load power required to protect is also known in the manufacturer's specifications.

Data center operators are facing tremendous pressure to save time and money and improve operational efficiency while maintaining the normal operation of the system. By forming a standby power supply alliance between standby generators and UPS, organizations can solve these problems and protect the load. And, like a strong trust-based relationship in teamwork, the organization will have a backup power platform that can withstand the test of time.

华为UPS兼容性的挑战