【 Weak current College 】 UPS dual-bus module (N + X) solution

· Applications: ■ communication system; ■ financial system; ■ industrial automation systems; ■ Internet Data Center (IDC); ■ multimedia data centre (MDC); ■ other important load system programme features: ·. · designs: standard 19-inch black cabinet; ■ serviceability: online hotplug, no need to bypass; ■ scalability: online capacity expansion, online promotion, online maintenance; ■ energy saving Green: high efficiency, low consumption, pollution-free power; ■ price: lower initial acquisition of the user and the future expansion of maintenance and operational costs; ■ high reliability: address single points of failure by the bottlenecks for critical load provides reliable power protection; ■ high immunity: guaranteed regardless of the UPS from the power supply or power supply their own "power noise" as much as possible to be eliminated, including conduction disturbance and radiated interference. · dual-bus module (N + X) programme overview: Internet Data Center (IDC) and multimedia data centre (MDC) is a high speed Internet Control Center. Users on their commitment to information resources (data, voice and image information) of remote processing, storage and transfer of "time" requirement is very high. Even if it is only a few seconds of "downtime" will be give the entire Internet Security runs and the user's production and business bring incalculable losses. Serious, even causing social and economic life of severe paralysis. As a result, IDC must provide the user with 365 × 24h continuous high-speed, secure, and reliable information resources for value-added services. To achieve this, from the design principle, bear the IDC power supply for the entire power system tasks that must be used with a high "fault-tolerant" features redundant power supply scheme-in order to ensure that whatever is in the commercial power grid failure or any modules (including system control module) fails, or is undergoing routine maintenance/repair operation, or for any resulting fuse burned/breaker "trip", Internet device shall consist of the "on-line ups" inverter power supply, instead of entering the city by the ordinary power/emergency standby generator via UPS AC bypass to the status of the power supply. This is because only "on-line ups" inverter power supply can be provided to the user's load with voltage, frequency, "mutation" without interference and waveform distortion is very small, high-quality sine wave power. For including off-line UPS, online interactive UPS, "non-online ups", they are primarily on input power voltage is adjusted, the frequency of the input voltage fluctuations, various power supplies and voltage distortion and no "substantive" improvements. This means that, throughout the entire power supply system, should not be any single point of failure to "bottleneck". To this end, it should be possible to configure highly "fault-tolerant" features redundant power-UPS. This means that the UPS is running, even if certain "parts" occasional "fault", the entire UPS power supply system must still functioning. Relative to the traditional sense of the UPS, in dual-bus system has a modular (N + X) higher UPS configuration has the advantage. In industry the user's information network system construction, often on high-end UPS capacity produces wrong, or too low or too high, it is expected that the results could lead to purchase cost is too high, cannot meet the load requirements or cause resources, space and energy waste. Dual-bus module (N + X) through the structure Extensible modules efficiently solved this problem, it can help the user in the future development of ambiguous situations phased construction and investments. When a user of electricity load demand increases, only need to use electricity planning phased increase in the power module. At the same time, through modular integration, can fully meet the needs of power supply system scalability and flexibility with more flexible and better reliability, power protection areas for the future development trend and milestones. In addition, in the traditional high-end UPS products, the existence of a single UPS prone to a single point of failure, the previous user on this security measure is using the traditional "1 + 1" or the "N + 1" redundant mechanism, which not only increased the procurement, installation and maintenance costs, and fault-tolerant can be only once. While in dual-bus module (N + X) system, the parallel module are built-in redundancy intelligent individual, without the need for system controllers on parallel system for the control of concentration. When any modules (including system control module) fails, the redundant design will achieve the greatest degree of fault of redundancy, while at the same time can also allow users according to their own needs to select more than one fault rate of redundancy. That is in the dual-bus module (N + X), under system, users only need to purchase the appropriate power module, you can achieve the "N + X" failed redundancy and upgrading. Dual-bus module (N + X) system can effectively solve traditional UPS of conditionality, which in turn allows the user to obtain an excellent scalability, and can, where necessary, on its own autonomous systems and integration of distribution. Not only satisfy the needs of the late device extensions, and reduces the user's initial acquisition costs. According to the current UPS industry technology development level, to use a "double bus input" and "dual-bus output" modular power supply function (N + X) UPS redundant power supply system. It consists of following parts supply system consisting of: 1) power supply system dual-bus input dual-bus input basic configuration for the power supply by AC input power: + standby generator set + "automatically switch" control cabinet + enter distribution Cabinet. Automatically switch control system at all times to monitor a variety of input power for the real-time operational status, and ensure that there will always be one of the most reliable way to power to the UPS input. For some important IDC machine room, the "emergency power generator" is actually a multiple diesel generators + generator and machine control cabinet consisting of redundant power generator power supply system. 2) dual-bus output power distribution system in order to eliminate possible at ups and machine system output and user-side single-point between the "bottleneck" hidden fault, it is necessary to configure a dual-bus module (N + X) the UPS output power distribution system. The basic configuration consists of the "N + 1"-type modular UPS redundant power supply (optimization "1 + 1" or "2 + 1"-and machine-powered party) + Output distribution Cabinet + load automatically toggle switch (LTS) consisting of the UPS output power supply system. For some of the most demanding sites, you should configure the load synchronous controller (LBS) + two "N + 1"-type modular (N + X) UPS redundant power supply system that is highly "fault-tolerant" function of the power supply system. In view of the current in the IDC in servers and disk arrays, etc. products there (30 ~ 50) per cent for the use of "dual power input power supply" institutional products, for these devices, you can directly from the two sets of the "N + 1"-and machine systems connected to this kind of "dual power input device" of two input terminals. For a "single-supply input power supply" means the key load, is from two sets of the "N + 1"-and machine systems connected to the "load auto-toggle switch" (commonly STS-static switches and SS-quickly toggle switch) of the two input, then the user's key device connected to "load auto-toggle switch" output. · dual-bus module (N + X) UPS system reliability analysis to assess the performance of their duties of reliability, should not only consider the MTBF, UPS will also consider the MTTR and power UPS of MTBF. When UPS failed at the same time, the city also fails, the load will lose power, that is the key responsibilities of the UPS. Load exposure without protection of commercial power beneath the length of time depends on the length of the maintenance time. If the maintenance one ups required one week, while the city's average time without undue Cheung is a week, so, UPS fails, the load will most likely lose power. If the UPS is 1 hour MTTR, city of MTBF is not on the critical load of failure probability have a significant impact. Obviously, reducing MTTR of UPS will reduce the probability of the critical load. Reduce MTTR UPS of the best approach is to minimize maintenance may affect the UPS. Dual-bus module (N + X) UPS because online hot-plug function, nature is the best choice. From the design principle, assume the task of the entire power supply systems must be highly "fault-tolerant" features redundant power supply scheme-in order to ensure that whatever is in the commercial power grid failure or any modules (including system control module) fails, or is undergoing routine maintenance/repair operation, or for any resulting fuse burned/breaker "trip", Internet device shall consist of the "on-line ups" inverter power supply, instead of entering the city by the ordinary power/emergency standby generator via UPS AC bypass to the status of the power supply. In sum, the dual-bus module (N + X) UPS has the longest duties mean time between failures (λ s m I s I o n), the smallest mean time to repair (MTTR) and the strongest antioxidant power interference risks and highly fault-tolerant "," application of the system will be more stable, efficient and secure 24h uninterruptible power supply power support, the latest professional room power system models, is the most reliable electricity guaranteed. · matching with IDC's centralized monitoring system "compatibility" good UPS redundant power supply system in order to meet the information network on IDC and MDC room for no or little unmanned management and long-distance centralized monitoring needs, thereby improving the the UPS power supply system of the "manageability" Internet Data Center, in addition to itself should be configured on all of IT equipment for real-time monitoring of network management system, you should create a "non-IT equipment" centralized monitoring system, so that on issues such as air conditioner, power distribution Cabinet, batteries, generators, water leakage alarms, security systems and fire-fighting system and other equipment operating conditions for real-time monitoring and analysis. For this reason, the requiring the use of redundant UPS power supply system should be configured with the following telecommunications interface: 1) on the UPS RS232/RS485 interface configured, Modem or SNMP Adapter; 2) used to display the UPS status/alert "relay dry contacts"-type output communication interface; 3) the "user defined" input signal (access control, smoke, temperature and humidity alarm signal) of the "relay" dry contact input communication interface; 4) on a variety of "non-IT equipment" configuration necessary data collector; 5) configure centralized monitoring and management software package or communication protocol. Use the input/output communication interface and a corresponding power management software or the user's existing network management centralized monitoring system, you can make up the so-called intelligent IDC and MDC room centralized monitoring system. In such a network management system for the regulation of the main features are: 1) to access the UPS of LED/LCD displays can be observed on the ups in the real-time operation parameters (for example: input/output voltage, current, frequency, active power/apparent power, power factor and battery charge and discharge voltage/current, etc., parameters); 2) "Internet Data Center" used by the various "engine room environment control devices" and "run history" (from a variety of device power-on, on-time order, had a fault/warning/user-performed actions, etc); 3) in case of failure to perform the webcast alert (pop-up Alerts window), telephone or cell phone's auto-dial, automatic paging or E-Mail, to notify the person on duty in a timely manner to the site troubleshooting or maintenance; 4) on the UPS standby batteries perform programmable battery capacity "self test", if you find that the battery's "actual capacity (Ah)" on the low side, it should also be automatically issued "battery replacement" pre-alarm signal; 5) will be the "user's custom" alarm signals (for example: temperature/humidity, access control, fire control, alarm signals) by UPS input communication interface is included in the IDC or intelligent buildings of unified centralized monitoring system; 6) by IDC and the MDC, the competent authorities designated by the staff, according to the different authorization permissions, rating the "resize"/set various appropriate equipment operating parameters or perform remote diagnosis and fault analysis/. · dual-bus module (2 + 2) simulation map: